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qzdoom/src/scripting/zscript/zcc_compile.cpp

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- added copyright headers to scripting files.
2016-10-08 06:35:16 +00:00
/*
** zcc_compile.cpp
**
**---------------------------------------------------------------------------
** Copyright -2016 Randy Heit
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
** Copyright 2016 Christoph Oelckers
- added copyright headers to scripting files.
2016-10-08 06:35:16 +00:00
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
#include "actor.h"
#include "thingdef.h"
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
#include "sc_man.h"
#include "c_console.h"
#include "c_dispatch.h"
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
#include "doomerrors.h"
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
#include "w_wad.h"
#include "cmdlib.h"
#include "m_alloc.h"
#include "zcc_parser.h"
#include "zcc_compile.h"
#include "v_text.h"
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
#include "p_lnspec.h"
- converted a few more DECORATE files. - started with the AST converter. So far it only deals with direct function calls with simple constants as parameters. - added an error condition for the defaults block to get rid of some asserts.
2016-10-13 22:40:20 +00:00
#include "i_system.h"
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
#include "gdtoa.h"
- committed from the wrong subdirectory and missed all files that just changed the #include line.
2016-10-15 08:43:02 +00:00
#include "codegeneration/codegen.h"
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
2016-10-12 22:53:59 +00:00
#include "vmbuilder.h"
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
#define DEFINING_CONST ((PSymbolConst *)(void *)1)
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
//==========================================================================
//
// ZCCCompiler :: ProcessClass
//
//==========================================================================
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
void ZCCCompiler::ProcessClass(ZCC_Class *cnode, PSymbolTreeNode *treenode)
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Classes.Push(new ZCC_ClassWork(static_cast<ZCC_Class *>(cnode), treenode));
auto cls = Classes.Last();
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
auto node = cnode->Body;
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
PSymbolTreeNode *childnode;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
ZCC_Enum *enumType = nullptr;
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
FString name;
name << "nodes - " << FName(cnode->NodeName);
cls->TreeNodes.SetName(name);
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
if (cnode->Replaces != nullptr && !static_cast<PClassActor *>(cnode->Type)->SetReplacement(cnode->Replaces->Id))
- resorted some of thingdef.cpp's contents into more appropriate files. - split FinishActor into several functions. While DECORATE can, ZSCRIPT cannot do all this in one go. - split the state finalization into several class-specific virtual functions.
2016-10-12 18:42:41 +00:00
{
Warn(cnode, "Replaced type '%s' not found for %s", FName(cnode->Replaces->Id).GetChars(), cnode->Type->TypeName.GetChars());
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// Need to check if the class actually has a body.
if (node != nullptr) do
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
{
switch (node->NodeType)
{
case AST_Struct:
case AST_ConstantDef:
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if ((childnode = AddTreeNode(static_cast<ZCC_NamedNode *>(node)->NodeName, node, &cls->TreeNodes)))
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
{
switch (node->NodeType)
{
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
enumType = static_cast<ZCC_Enum *>(node);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Enums.Push(enumType);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
case AST_Struct:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
ProcessStruct(static_cast<ZCC_Struct *>(node), childnode, cls->cls);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
case AST_ConstantDef:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Constants.Push(static_cast<ZCC_ConstantDef *>(node));
cls->Constants.Last()->Type = enumType;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
default:
assert(0 && "Default case is just here to make GCC happy. It should never be reached");
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
}
}
break;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_VarDeclarator:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Fields.Push(static_cast<ZCC_VarDeclarator *>(node));
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
case AST_EnumTerminator:
enumType = nullptr;
break;
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
case AST_States:
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
cls->States.Push(static_cast<ZCC_States *>(node));
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
break;
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
case AST_FuncDeclarator:
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
cls->Functions.Push(static_cast<ZCC_FuncDeclarator *>(node));
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
break;
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
case AST_Default:
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
cls->Defaults.Push(static_cast<ZCC_Default *>(node));
break;
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
default:
assert(0 && "Unhandled AST node type");
break;
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
}
node = node->SiblingNext;
}
while (node != cnode->Body);
}
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
//==========================================================================
//
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// ZCCCompiler :: ProcessStruct
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
//
//==========================================================================
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
void ZCCCompiler::ProcessStruct(ZCC_Struct *cnode, PSymbolTreeNode *treenode, ZCC_Class *outer)
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Structs.Push(new ZCC_StructWork(static_cast<ZCC_Struct *>(cnode), treenode, outer));
ZCC_StructWork *cls = Structs.Last();
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
auto node = cnode->Body;
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
PSymbolTreeNode *childnode;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
ZCC_Enum *enumType = nullptr;
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// Need to check if the struct actually has a body.
if (node != nullptr) do
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
{
switch (node->NodeType)
{
case AST_ConstantDef:
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if ((childnode = AddTreeNode(static_cast<ZCC_NamedNode *>(node)->NodeName, node, &cls->TreeNodes)))
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
{
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
switch (node->NodeType)
{
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
enumType = static_cast<ZCC_Enum *>(node);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Enums.Push(enumType);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
case AST_ConstantDef:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Constants.Push(static_cast<ZCC_ConstantDef *>(node));
cls->Constants.Last()->Type = enumType;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
default:
assert(0 && "Default case is just here to make GCC happy. It should never be reached");
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
}
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
}
break;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_VarDeclarator:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
cls->Fields.Push(static_cast<ZCC_VarDeclarator *>(node));
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
case AST_EnumTerminator:
enumType = nullptr;
break;
- added ProcessStruct, analogous to ProcessClass. Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 13:39:54 +00:00
default:
assert(0 && "Unhandled AST node type");
break;
}
node = node->SiblingNext;
}
while (node != cnode->Body);
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//==========================================================================
//
// ZCCCompiler Constructor
//
//==========================================================================
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
ZCCCompiler::ZCCCompiler(ZCC_AST &ast, DObject *_outer, PSymbolTable &_symbols, PSymbolTable &_outsymbols)
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
: Outer(_outer), GlobalTreeNodes(&_symbols), OutputSymbols(&_outsymbols), AST(ast)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
FScriptPosition::ResetErrorCounter();
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
// Group top-level nodes by type
if (ast.TopNode != NULL)
{
ZCC_TreeNode *node = ast.TopNode;
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
PSymbolTreeNode *tnode;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
PType *enumType = nullptr;
ZCC_Enum *zenumType = nullptr;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
do
{
switch (node->NodeType)
{
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
case AST_Class:
case AST_Struct:
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
case AST_ConstantDef:
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if ((tnode = AddTreeNode(static_cast<ZCC_NamedNode *>(node)->NodeName, node, GlobalTreeNodes)))
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
switch (node->NodeType)
{
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_Enum:
zenumType = static_cast<ZCC_Enum *>(node);
enumType = NewEnum(zenumType->NodeName, nullptr);
GlobalSymbols.AddSymbol(new PSymbolType(zenumType->NodeName, enumType));
break;
case AST_Class:
ProcessClass(static_cast<ZCC_Class *>(node), tnode);
break;
case AST_Struct:
ProcessStruct(static_cast<ZCC_Struct *>(node), tnode, nullptr);
break;
case AST_ConstantDef:
Constants.Push(static_cast<ZCC_ConstantDef *>(node));
Constants.Last()->Type = zenumType;
break;
default:
assert(0 && "Default case is just here to make GCC happy. It should never be reached");
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
}
break;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case AST_EnumTerminator:
zenumType = nullptr;
break;
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
default:
assert(0 && "Unhandled AST node type");
break;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
node = node->SiblingNext;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
} while (node != ast.TopNode);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
ZCCCompiler::~ZCCCompiler()
{
for (auto s : Structs)
{
delete s;
}
for (auto c : Classes)
{
delete c;
}
Structs.Clear();
Classes.Clear();
}
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
//==========================================================================
//
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
// ZCCCompiler :: AddTreeNode
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
//
// Keeps track of definition nodes by their names. Ensures that all names
// in this scope are unique.
//
//==========================================================================
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
PSymbolTreeNode *ZCCCompiler::AddTreeNode(FName name, ZCC_TreeNode *node, PSymbolTable *treenodes, bool searchparents)
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
PSymbol *check = treenodes->FindSymbol(name, searchparents);
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
if (check != NULL)
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
assert(check->IsA(RUNTIME_CLASS(PSymbolTreeNode)));
Error(node, "Attempt to redefine '%s'", name.GetChars());
Error(static_cast<PSymbolTreeNode *>(check)->Node, " Original definition is here");
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
return nullptr;
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
}
else
{
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
auto sy = new PSymbolTreeNode(name, node);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
FString name;
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
treenodes->AddSymbol(sy);
- give the 'default' block its own node type in the AST. - group a class's body the same way as the global AST. Only partially implemented so far so that constants can be processed.
2016-10-08 13:27:20 +00:00
return sy;
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
}
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//==========================================================================
//
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
// ZCCCompiler :: Warn
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
// Prints a warning message, and increments WarnCount.
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
//==========================================================================
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
void ZCCCompiler::Warn(ZCC_TreeNode *node, const char *msg, ...)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
va_list argptr;
va_start(argptr, msg);
MessageV(node, TEXTCOLOR_ORANGE, msg, argptr);
va_end(argptr);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
FScriptPosition::WarnCounter++;
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
//==========================================================================
//
// ZCCCompiler :: Error
//
// Prints an error message, and increments ErrorCount.
//
//==========================================================================
void ZCCCompiler::Error(ZCC_TreeNode *node, const char *msg, ...)
{
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
va_list argptr;
va_start(argptr, msg);
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
MessageV(node, TEXTCOLOR_RED, msg, argptr);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
va_end(argptr);
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
FScriptPosition::ErrorCounter++;
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
//==========================================================================
//
// ZCCCompiler :: MessageV
//
// Prints a message, annotated with the source location for the tree node.
//
//==========================================================================
void ZCCCompiler::MessageV(ZCC_TreeNode *node, const char *txtcolor, const char *msg, va_list argptr)
{
FString composed;
composed.Format("%s%s, line %d: ", txtcolor, node->SourceName->GetChars(), node->SourceLoc);
composed.VAppendFormat(msg, argptr);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
composed += '\n';
PrintString(PRINT_HIGH, composed);
}
//==========================================================================
//
// ZCCCompiler :: Compile
//
// Compile everything defined at this level.
//
//==========================================================================
int ZCCCompiler::Compile()
{
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
CreateClassTypes();
CreateStructTypes();
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
CompileAllConstants();
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
CompileAllFields();
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
InitDefaults();
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
InitFunctions();
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
CompileStates();
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
return FScriptPosition::ErrorCounter;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
//==========================================================================
//
// ZCCCompiler :: CreateStructTypes
//
// Creates a PStruct for every struct.
//
//==========================================================================
void ZCCCompiler::CreateStructTypes()
{
for(auto s : Structs)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
s->Outer = s->OuterDef == nullptr? nullptr : s->OuterDef->Type;
s->strct->Type = NewStruct(s->NodeName(), s->Outer);
s->strct->Symbol = new PSymbolType(s->NodeName(), s->Type());
s->Type()->Symbols.SetName(FName(s->NodeName()));
GlobalSymbols.AddSymbol(s->strct->Symbol);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
for (auto e : s->Enums)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto etype = NewEnum(e->NodeName, s->Type());
s->Type()->Symbols.AddSymbol(new PSymbolType(e->NodeName, etype));
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
}
}
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
//==========================================================================
//
// ZCCCompiler :: CreateClassTypes
//
// Creates a PClass for every class so that we get access to the symbol table
// These will be created with unknown size because for that we need to
// process all fields first, but to do that we need the PClass and some
// other info depending on the PClass.
//
//==========================================================================
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
void ZCCCompiler::CreateClassTypes()
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
// we are going to sort the classes array so that entries are sorted in order of inheritance.
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
auto OrigClasses = std::move(Classes);
Classes.Clear();
bool donesomething = true;
while (donesomething)
{
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
donesomething = false;
for (unsigned i = 0; i<OrigClasses.Size(); i++)
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
{
auto c = OrigClasses[i];
// Check if we got the parent already defined.
PClass *parent;
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto ParentName = c->cls->ParentName;
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (ParentName != nullptr && ParentName->SiblingNext == ParentName) parent = PClass::FindClass(ParentName->Id);
else if (ParentName == nullptr) parent = RUNTIME_CLASS(DObject);
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
else
{
// The parent is a dotted name which the type system currently does not handle.
// Once it does this needs to be implemented here.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto p = ParentName;
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
FString build;
do
{
if (build.IsNotEmpty()) build += '.';
build += FName(p->Id);
p = static_cast<decltype(p)>(p->SiblingNext);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
} while (p != ParentName);
Error(c->cls, "Qualified name '%s' for base class not supported in '%s'", build.GetChars(), FName(c->NodeName()).GetChars());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
parent = RUNTIME_CLASS(DObject);
}
if (parent != nullptr)
{
// The parent exists, we may create a type for this class
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (c->cls->Flags & ZCC_Native)
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
{
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
// If this is a native class, its own type must also already exist and not be a runtime class.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto me = PClass::FindClass(c->NodeName());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
if (me == nullptr)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(c->cls, "Unknown native class %s", c->NodeName().GetChars());
me = parent->FindClassTentative(c->NodeName());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
}
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
else if (me->bRuntimeClass)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(c->cls, "%s is not a native class", c->NodeName().GetChars());
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
}
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
else
{
DPrintf(DMSG_SPAMMY, "Registered %s as native with parent %s\n", me->TypeName.GetChars(), parent->TypeName.GetChars());
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
c->cls->Type = me;
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
}
else
{
- create struct types. - fixed class creation. There was an infinite loop and some missing checks for native classes. - do not write the compiler's symbols to the same symbol table as the output. The output must go to GlobalSymbols but the internal symbols must go to a namespace specific table that can be discarded after compilation.
2016-10-08 11:34:37 +00:00
// We will never get here if the name is a duplicate, so we can just do the assignment.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
c->cls->Type = parent->FindClassTentative(c->NodeName());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
c->cls->Symbol = new PSymbolType(c->NodeName(), c->Type());
GlobalSymbols.AddSymbol(c->cls->Symbol);
c->Type()->Symbols.SetName(c->NodeName());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
Classes.Push(c);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
OrigClasses.Delete(i--);
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
donesomething = true;
}
else
{
// No base class found. Now check if something in the unprocessed classes matches.
// If not, print an error. If something is found let's retry again in the next iteration.
bool found = false;
for (auto d : OrigClasses)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (d->NodeName() == c->cls->ParentName->Id)
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
{
found = true;
break;
}
}
if (!found)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(c->cls, "Class %s has unknown base class %s", c->NodeName().GetChars(), FName(c->cls->ParentName->Id).GetChars());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
// create a placeholder so that the compiler can continue looking for errors.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
c->cls->Type = RUNTIME_CLASS(DObject)->FindClassTentative(c->NodeName());
c->cls->Symbol = new PSymbolType(c->NodeName(), c->Type());
GlobalSymbols.AddSymbol(c->cls->Symbol);
c->Type()->Symbols.SetName(c->NodeName());
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
Classes.Push(c);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
OrigClasses.Delete(i--);
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
donesomething = true;
}
}
}
}
// What's left refers to some other class in the list but could not be resolved.
// This normally means a circular reference.
for (auto c : OrigClasses)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(c->cls, "Class %s has circular inheritance", FName(c->NodeName()).GetChars());
c->cls->Type = RUNTIME_CLASS(DObject)->FindClassTentative(c->NodeName());
c->cls->Symbol = new PSymbolType(c->NodeName(), c->Type());
c->Type()->Symbols.SetName(FName(c->NodeName()).GetChars());
GlobalSymbols.AddSymbol(c->cls->Symbol);
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
Classes.Push(c);
}
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
// Last but not least: Now that all classes have been created, we can create the symbols for the internal enums and link the treenode symbol tables
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
for (auto cd : Classes)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
for (auto e : cd->Enums)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto etype = NewEnum(e->NodeName, cd->Type());
cd->Type()->Symbols.AddSymbol(new PSymbolType(e->NodeName, etype));
}
// Link the tree node tables. We only can do this after we know the class relations.
for (auto cc : Classes)
{
if (cc->Type() == cd->Type()->ParentClass)
{
cd->TreeNodes.SetParentTable(&cc->TreeNodes);
break;
}
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
}
- create class types from the AST. This is the first thing the compiler has to do to get access to the class's symbol table. Of course at this point the final size of a class is not known yet so these are currently all treated as tentative.
2016-10-08 09:54:33 +00:00
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//==========================================================================
//
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
// ZCCCompiler :: AddConstants
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
// Helper for CompileAllConstants
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
//==========================================================================
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
void ZCCCompiler::CopyConstants(TArray<ZCC_ConstantWork> &dest, TArray<ZCC_ConstantDef*> &Constants, PSymbolTable *ot)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
for (auto c : Constants)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
dest.Push({ c, ot });
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
}
}
//==========================================================================
//
// ZCCCompiler :: CompileAllConstants
//
// Make symbols from every constant defined at all levels.
// Since constants may only depend on other constants this can be done
// without any more involved processing of the AST as a first step.
//
//==========================================================================
void ZCCCompiler::CompileAllConstants()
{
// put all constants in one list to make resolving this easier.
TArray<ZCC_ConstantWork> constantwork;
- renamed the symbol tables holding the tree nodes so that the code becomes clearer to read. Necessary because the unclear naming caused: - fixed: The tree nodes for classes and struct members were stored in the global tree nodes table. - sort variable declarations into their own list for processing.
2016-10-09 07:09:17 +00:00
CopyConstants(constantwork, Constants, OutputSymbols);
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
for (auto c : Classes)
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
CopyConstants(constantwork, c->Constants, &c->Type()->Symbols);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
for (auto s : Structs)
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
CopyConstants(constantwork, s->Constants, &s->Type()->Symbols);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
}
// Before starting to resolve the list, let's create symbols for all already resolved ones first (i.e. all literal constants), to reduce work.
for (unsigned i = 0; i<constantwork.Size(); i++)
{
if (constantwork[i].node->Value->NodeType == AST_ExprConstant)
{
AddConstant(constantwork[i]);
// Remove the constant from the list
constantwork.Delete(i);
i--;
}
}
bool donesomething = true;
// Now go through this list until no more constants can be resolved. The remaining ones will be non-constant values.
while (donesomething && constantwork.Size() > 0)
{
donesomething = false;
for (unsigned i = 0; i < constantwork.Size(); i++)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
if (CompileConstant(constantwork[i].node, constantwork[i].outputtable))
{
AddConstant(constantwork[i]);
// Remove the constant from the list
constantwork.Delete(i);
i--;
donesomething = true;
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
for (unsigned i = 0; i < constantwork.Size(); i++)
{
Error(constantwork[i].node, "%s is not a constant", FName(constantwork[i].node->NodeName).GetChars());
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
//==========================================================================
//
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
// ZCCCompiler :: AddConstant
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
// Adds a constant to its assigned symbol table
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
void ZCCCompiler::AddConstant(ZCC_ConstantWork &constant)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
auto def = constant.node;
auto val = def->Value;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
if (val->NodeType == AST_ExprConstant)
{
ZCC_ExprConstant *cval = static_cast<ZCC_ExprConstant *>(val);
if (cval->Type == TypeString)
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
def->Symbol = new PSymbolConstString(def->NodeName, *(cval->StringVal));
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
else if (cval->Type->IsA(RUNTIME_CLASS(PInt)))
{
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// How do we get an Enum type in here without screwing everything up???
//auto type = def->Type != nullptr ? def->Type : cval->Type;
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
def->Symbol = new PSymbolConstNumeric(def->NodeName, cval->Type, cval->IntVal);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
else if (cval->Type->IsA(RUNTIME_CLASS(PFloat)))
{
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
if (def->Type != nullptr)
{
Error(def, "Enum members must be integer values");
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
def->Symbol = new PSymbolConstNumeric(def->NodeName, cval->Type, cval->DoubleVal);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
else
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
Error(def->Value, "Bad type for constant definiton");
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
def->Symbol = nullptr;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
if (def->Symbol == nullptr)
{
// Create a dummy constant so we don't make any undefined value warnings.
def->Symbol = new PSymbolConstNumeric(def->NodeName, TypeError, 0);
}
constant.outputtable->ReplaceSymbol(def->Symbol);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
}
//==========================================================================
//
// ZCCCompiler :: CompileConstant
//
// For every constant definition, evaluate its value (which should result
// in a constant), and create a symbol for it.
//
//==========================================================================
bool ZCCCompiler::CompileConstant(ZCC_ConstantDef *def, PSymbolTable *sym)
{
assert(def->Symbol == nullptr);
def->Symbol = DEFINING_CONST; // avoid recursion
ZCC_Expression *val = Simplify(def->Value, sym);
def->Value = val;
if (def->Symbol == DEFINING_CONST) def->Symbol = nullptr;
return (val->NodeType == AST_ExprConstant);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
//==========================================================================
//
// ZCCCompiler :: Simplify
//
// For an expression,
// Evaluate operators whose arguments are both constants, replacing it
// with a new constant.
// For a binary operator with one constant argument, put it on the right-
// hand operand, where permitted.
// Perform automatic type promotion.
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::Simplify(ZCC_Expression *root, PSymbolTable *sym)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
Remove IsUnary() and IsBinary() - This information is already stored in the node's NodeType field, so there's no reason to go do a table lookup for it elsewhere. Must have been a brain fart when I wrote them in the first place.
2013-11-02 02:28:00 +00:00
if (root->NodeType == AST_ExprUnary)
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return SimplifyUnary(static_cast<ZCC_ExprUnary *>(root), sym);
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
}
Remove IsUnary() and IsBinary() - This information is already stored in the node's NodeType field, so there's no reason to go do a table lookup for it elsewhere. Must have been a brain fart when I wrote them in the first place.
2013-11-02 02:28:00 +00:00
else if (root->NodeType == AST_ExprBinary)
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return SimplifyBinary(static_cast<ZCC_ExprBinary *>(root), sym);
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
}
else if (root->Operation == PEX_ID)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return IdentifyIdentifier(static_cast<ZCC_ExprID *>(root), sym);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
else if (root->Operation == PEX_MemberAccess)
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return SimplifyMemberAccess(static_cast<ZCC_ExprMemberAccess *>(root), sym);
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
}
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
else if (root->Operation == PEX_FuncCall)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return SimplifyFunctionCall(static_cast<ZCC_ExprFuncCall *>(root), sym);
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
return root;
}
//==========================================================================
//
// ZCCCompiler :: SimplifyUnary
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::SimplifyUnary(ZCC_ExprUnary *unary, PSymbolTable *sym)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
unary->Operand = Simplify(unary->Operand, sym);
if (unary->Operand->Type == nullptr)
{
return unary;
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
ZCC_OpProto *op = PromoteUnary(unary->Operation, unary->Operand);
if (op == NULL)
{ // Oh, poo!
unary->Type = TypeError;
}
else if (unary->Operand->Operation == PEX_ConstValue)
{
return op->EvalConst1(static_cast<ZCC_ExprConstant *>(unary->Operand));
}
return unary;
}
//==========================================================================
//
// ZCCCompiler :: SimplifyBinary
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::SimplifyBinary(ZCC_ExprBinary *binary, PSymbolTable *sym)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
binary->Left = Simplify(binary->Left, sym);
binary->Right = Simplify(binary->Right, sym);
if (binary->Left->Type == nullptr || binary->Right->Type == nullptr)
{
// We do not know yet what this is so we cannot promote it (yet.)
return binary;
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
ZCC_OpProto *op = PromoteBinary(binary->Operation, binary->Left, binary->Right);
if (op == NULL)
{
binary->Type = TypeError;
}
else if (binary->Left->Operation == PEX_ConstValue &&
binary->Right->Operation == PEX_ConstValue)
{
return op->EvalConst2(static_cast<ZCC_ExprConstant *>(binary->Left),
static_cast<ZCC_ExprConstant *>(binary->Right), AST.Strings);
}
return binary;
}
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
//==========================================================================
//
// ZCCCompiler :: SimplifyMemberAccess
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::SimplifyMemberAccess(ZCC_ExprMemberAccess *dotop, PSymbolTable *symt)
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
PSymbolTable *symtable;
dotop->Left = Simplify(dotop->Left, symt);
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
if (dotop->Left->Operation == PEX_TypeRef)
{ // Type refs can be evaluated now.
PType *ref = static_cast<ZCC_ExprTypeRef *>(dotop->Left)->RefType;
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
PSymbol *sym = ref->Symbols.FindSymbolInTable(dotop->Right, symtable);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
if (sym != nullptr)
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
ZCC_Expression *expr = NodeFromSymbol(sym, dotop, symtable);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
if (expr != nullptr)
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return expr;
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
}
}
else if (dotop->Left->Operation == PEX_Super)
{
symt = symt->GetParentTable();
if (symt != nullptr)
{
PSymbol *sym = symt->FindSymbolInTable(dotop->Right, symtable);
if (sym != nullptr)
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *expr = NodeFromSymbol(sym, dotop, symtable);
if (expr != nullptr)
{
return expr;
}
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
}
}
}
return dotop;
}
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
//==========================================================================
//
// ZCCCompiler :: SimplifyFunctionCall
//
// This may replace a function call with cast(s), since they look like the
// same thing to the parser.
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::SimplifyFunctionCall(ZCC_ExprFuncCall *callop, PSymbolTable *sym)
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
{
ZCC_FuncParm *parm;
int parmcount = 0;
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
callop->Function = Simplify(callop->Function, sym);
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
parm = callop->Parameters;
if (parm != NULL)
{
do
{
parmcount++;
assert(parm->NodeType == AST_FuncParm);
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
parm->Value = Simplify(parm->Value, sym);
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
parm = static_cast<ZCC_FuncParm *>(parm->SiblingNext);
}
while (parm != callop->Parameters);
}
// If the left side is a type ref, then this is actually a cast
// and not a function call.
if (callop->Function->Operation == PEX_TypeRef)
{
if (parmcount != 1)
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
Error(callop, "Type cast requires one parameter");
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
callop->ToErrorNode();
}
else
{
PType *dest = static_cast<ZCC_ExprTypeRef *>(callop->Function)->RefType;
const PType::Conversion *route[CONVERSION_ROUTE_SIZE];
int routelen = parm->Value->Type->FindConversion(dest, route, countof(route));
if (routelen < 0)
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
///FIXME: Need real type names
Error(callop, "Cannot convert type 1 to type 2");
Interpret function calls to type refs as type casts
2013-10-31 01:53:02 +00:00
callop->ToErrorNode();
}
else
{
ZCC_Expression *val = ApplyConversion(parm->Value, route, routelen);
assert(val->Type == dest);
return val;
}
}
}
return callop;
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//==========================================================================
//
// ZCCCompiler :: PromoteUnary
//
// Converts the operand into a format preferred by the operator.
//
//==========================================================================
ZCC_OpProto *ZCCCompiler::PromoteUnary(EZCCExprType op, ZCC_Expression *&expr)
{
if (expr->Type == TypeError)
{
return NULL;
}
const PType::Conversion *route[CONVERSION_ROUTE_SIZE];
int routelen = countof(route);
ZCC_OpProto *proto = ZCC_OpInfo[op].FindBestProto(expr->Type, route, routelen);
if (proto != NULL)
{
expr = ApplyConversion(expr, route, routelen);
}
return proto;
}
//==========================================================================
//
// ZCCCompiler :: PromoteBinary
//
// Converts the operands into a format (hopefully) compatible with the
// operator.
//
//==========================================================================
ZCC_OpProto *ZCCCompiler::PromoteBinary(EZCCExprType op, ZCC_Expression *&left, ZCC_Expression *&right)
{
// If either operand is of type 'error', the result is also 'error'
if (left->Type == TypeError || right->Type == TypeError)
{
return NULL;
}
const PType::Conversion *route1[CONVERSION_ROUTE_SIZE], *route2[CONVERSION_ROUTE_SIZE];
int route1len = countof(route1), route2len = countof(route2);
ZCC_OpProto *proto = ZCC_OpInfo[op].FindBestProto(left->Type, route1, route1len, right->Type, route2, route2len);
if (proto != NULL)
{
left = ApplyConversion(left, route1, route1len);
right = ApplyConversion(right, route2, route2len);
}
return proto;
}
//==========================================================================
//
// ZCCCompiler :: ApplyConversion
//
//==========================================================================
ZCC_Expression *ZCCCompiler::ApplyConversion(ZCC_Expression *expr, const PType::Conversion **route, int routelen)
{
for (int i = 0; i < routelen; ++i)
{
if (expr->Operation != PEX_ConstValue)
{
expr = AddCastNode(route[i]->TargetType, expr);
}
else
{
route[i]->ConvertConstant(static_cast<ZCC_ExprConstant *>(expr), AST.Strings);
}
}
return expr;
}
//==========================================================================
//
// ZCCCompiler :: AddCastNode
//
//==========================================================================
ZCC_Expression *ZCCCompiler::AddCastNode(PType *type, ZCC_Expression *expr)
{
assert(expr->Operation != PEX_ConstValue && "Expression must not be constant");
// TODO: add a node here
return expr;
}
//==========================================================================
//
// ZCCCompiler :: IdentifyIdentifier
//
// Returns a node that represents what the identifer stands for.
//
//==========================================================================
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_Expression *ZCCCompiler::IdentifyIdentifier(ZCC_ExprID *idnode, PSymbolTable *symt)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
// Check the symbol table for the identifier.
PSymbolTable *table;
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
PSymbol *sym = symt->FindSymbolInTable(idnode->Identifier, table);
// GlobalSymbols cannot be the parent of a class's symbol table so we have to look for global symbols explicitly.
if (sym == nullptr && symt != &GlobalSymbols) sym = GlobalSymbols.FindSymbolInTable(idnode->Identifier, table);
if (sym != nullptr)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
ZCC_Expression *node = NodeFromSymbol(sym, idnode, table);
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
if (node != NULL)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
return node;
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
}
}
else
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
// Also handle line specials.
// To call this like a function this needs to be done differently, but for resolving constants this is ok.
int spec = P_FindLineSpecial(FName(idnode->Identifier).GetChars());
if (spec != 0)
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
ZCC_ExprConstant *val = static_cast<ZCC_ExprConstant *>(AST.InitNode(sizeof(*val), AST_ExprConstant, idnode));
val->Operation = PEX_ConstValue;
val->Type = TypeSInt32;
val->IntVal = spec;
return val;
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
Error(idnode, "Unknown identifier '%s'", FName(idnode->Identifier).GetChars());
idnode->ToErrorNode();
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
return idnode;
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
}
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//==========================================================================
//
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
// ZCCCompiler :: NodeFromSymbol
//
//==========================================================================
Store known but uncompiled nodes in the symbol table - Don't bother keeping track of uncompiled nodes in a special table. Use the regular symbol table instead. This should in the future make compiling nodes referenced deeper than (and before) their definitions fairly straightforward. - Also, break up the compiler's Message() function into Warn() and Error() and get rid of zcc_errors.h. I can't really see having a set of error numbers being useful.
2016-03-13 03:22:29 +00:00
ZCC_Expression *ZCCCompiler::NodeFromSymbol(PSymbol *sym, ZCC_Expression *source, PSymbolTable *table)
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
{
- implemented complete resolving of constants - both global and class-local. This uses a different algorithm as the old implementation - instead of recursively resolving unknown symbols it will first collect all constants from all scopes and then process them in one operation, doing multiple passes over the list until no more constants can be resolved anymore.
2016-10-08 20:16:10 +00:00
assert(sym != nullptr);
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
if (sym->IsKindOf(RUNTIME_CLASS(PSymbolConst)))
{
return NodeFromSymbolConst(static_cast<PSymbolConst *>(sym), source);
}
else if (sym->IsKindOf(RUNTIME_CLASS(PSymbolType)))
{
return NodeFromSymbolType(static_cast<PSymbolType *>(sym), source);
}
return NULL;
}
//==========================================================================
//
// ZCCCompiler :: NodeFromSymbolConst
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
//
// Returns a new AST constant node with the symbol's content.
//
//==========================================================================
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
ZCC_ExprConstant *ZCCCompiler::NodeFromSymbolConst(PSymbolConst *sym, ZCC_Expression *idnode)
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
ZCC_ExprConstant *val = static_cast<ZCC_ExprConstant *>(AST.InitNode(sizeof(*val), AST_ExprConstant, idnode));
val->Operation = PEX_ConstValue;
Allow using constants in other constants before their definitions. - Something like this is now valid: const foo = bar + 10; const bar = 1000;
2013-10-26 03:01:18 +00:00
if (sym == NULL)
{
val->Type = TypeError;
val->IntVal = 0;
}
else if (sym->IsKindOf(RUNTIME_CLASS(PSymbolConstString)))
Add evaluation of constant unary and binary expressions - Added ZCCCompiler class as a place to generate IR and symbols from an AST. Right now, all it does is simplify constant expressions into constant values. - Do type promotion on the AST where appropriate. - Added true and false tokens to the parser driver.
2013-10-24 04:06:32 +00:00
{
val->StringVal = AST.Strings.Alloc(static_cast<PSymbolConstString *>(sym)->Str);
val->Type = TypeString;
}
else
{
val->Type = sym->ValueType;
if (val->Type != TypeError)
{
assert(sym->IsKindOf(RUNTIME_CLASS(PSymbolConstNumeric)));
if (sym->ValueType->IsKindOf(RUNTIME_CLASS(PInt)))
{
val->IntVal = static_cast<PSymbolConstNumeric *>(sym)->Value;
}
else
{
assert(sym->ValueType->IsKindOf(RUNTIME_CLASS(PFloat)));
val->DoubleVal = static_cast<PSymbolConstNumeric *>(sym)->Float;
}
}
}
return val;
}
Allow access to the numeric properties. - Identifiers can now evaluate to type references. - The dot operator can now find symbols in type references.
2013-10-30 02:55:32 +00:00
//==========================================================================
//
// ZCCCompiler :: NodeFromSymbolType
//
// Returns a new AST type ref node with the symbol's content.
//
//==========================================================================
ZCC_ExprTypeRef *ZCCCompiler::NodeFromSymbolType(PSymbolType *sym, ZCC_Expression *idnode)
{
ZCC_ExprTypeRef *ref = static_cast<ZCC_ExprTypeRef *>(AST.InitNode(sizeof(*ref), AST_ExprTypeRef, idnode));
ref->Operation = PEX_TypeRef;
ref->RefType = sym->Type;
ref->Type = NewClassPointer(RUNTIME_CLASS(PType));
return ref;
}
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
//==========================================================================
//
// ZCCCompiler :: CompileAllFields
//
// builds the internal structure of all classes and structs
//
//==========================================================================
void ZCCCompiler::CompileAllFields()
{
// Create copies of the arrays which can be altered
auto Classes = this->Classes;
auto Structs = this->Structs;
// first step: Look for native classes with native children.
// These may not have any variables added to them because it'd clash with the native definitions.
for (unsigned i = 0; i < Classes.Size(); i++)
{
auto c = Classes[i];
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (c->Type()->Size != TentativeClass && c->Fields.Size() > 0)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
// We need to search the global class table here because not all children may have a scripted definition attached.
for (auto ac : PClass::AllClasses)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (ac->ParentClass == c->Type() && ac->Size != TentativeClass)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(c->cls, "Trying to add fields to class '%s' with native children", c->Type()->TypeName.GetChars());
Classes.Delete(i--);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
break;
}
}
}
}
bool donesomething = true;
while (donesomething && (Structs.Size() > 0 || Classes.Size() > 0))
{
donesomething = false;
for (unsigned i = 0; i < Structs.Size(); i++)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (CompileFields(Structs[i]->Type(), Structs[i]->Fields, Structs[i]->Outer, &Structs[i]->TreeNodes, true))
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
// Remove from the list if all fields got compiled.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Structs.Delete(i--);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
donesomething = true;
}
}
for (unsigned i = 0; i < Classes.Size(); i++)
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto type = Classes[i]->Type();
if (type->Size == TentativeClass)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (type->ParentClass->Size == TentativeClass)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
// we do not know the parent class's size yet, so skip this class for now.
continue;
}
else
{
// Inherit the size of the parent class
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
type->Size = Classes[i]->Type()->ParentClass->Size;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (CompileFields(type, Classes[i]->Fields, nullptr, &Classes[i]->TreeNodes, false))
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
// Remove from the list if all fields got compiled.
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Classes.Delete(i--);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
donesomething = true;
}
}
}
- a bit of cleanup.
2016-10-09 20:01:23 +00:00
// This really should never happen, but if it does, let's better print an error.
for (auto s : Structs)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(s->strct, "Unable to resolve all fields for struct %s", FName(s->NodeName()).GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
- a bit of cleanup.
2016-10-09 20:01:23 +00:00
for (auto s : Classes)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
Error(s->cls, "Unable to resolve all fields for class %s", FName(s->NodeName()).GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
}
//==========================================================================
//
// ZCCCompiler :: CompileFields
//
// builds the internal structure of a single class or struct
//
//==========================================================================
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
bool ZCCCompiler::CompileFields(PStruct *type, TArray<ZCC_VarDeclarator *> &Fields, PClass *Outer, PSymbolTable *TreeNodes, bool forstruct)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
while (Fields.Size() > 0)
{
auto field = Fields[0];
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
PType *fieldtype = DetermineType(type, field, field->Names->Name, field->Type, true);
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// For structs only allow 'deprecated', for classes exclude function qualifiers.
int notallowed = forstruct? ~ZCC_Deprecated : ZCC_Latent | ZCC_Final | ZCC_Action | ZCC_Static | ZCC_FuncConst | ZCC_Abstract;
if (field->Flags & notallowed)
{
Error(field, "Invalid qualifiers for %s (%s not allowed)", FName(field->Names->Name).GetChars(), FlagsToString(field->Flags & notallowed));
field->Flags &= notallowed;
}
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
uint32_t varflags = 0;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// These map directly to implementation flags.
if (field->Flags & ZCC_Private) varflags |= VARF_Private;
if (field->Flags & ZCC_Protected) varflags |= VARF_Protected;
if (field->Flags & ZCC_Deprecated) varflags |= VARF_Deprecated;
if (field->Flags & ZCC_ReadOnly) varflags |= VARF_ReadOnly;
if (field->Flags & ZCC_Native)
{
// todo: get the native address of this field.
}
if (field->Flags & ZCC_Meta)
{
varflags |= VARF_ReadOnly; // metadata implies readonly
// todo: this needs to go into the metaclass and needs some handling
}
if (field->Type->ArraySize != nullptr)
{
fieldtype = ResolveArraySize(fieldtype, field->Type->ArraySize, &type->Symbols);
}
auto name = field->Names;
do
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
if (AddTreeNode(name->Name, name, TreeNodes, !forstruct))
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
auto thisfieldtype = fieldtype;
if (name->ArraySize != nullptr)
{
thisfieldtype = ResolveArraySize(thisfieldtype, name->ArraySize, &type->Symbols);
}
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
- changed PClass:AddField so that it doesn't create defaults if none are present. The ZScript compiler will not create any defaults until after all fields have been added and this function created bad data if it was run on a class without defaults. - added checks for duplicate field names. - moved the tree node symbol tables out of PSymbolTreeNode to the worker data. That symbol is a bad location because it restricts the usefulness of the symbol class which is also needed for variables which use different AST structs. - fixed some memory management issues with the work classes for the compiler that became apparent after moving the symbol tables in there. In several places these were copied around, possibly losing data.
2016-10-09 23:18:47 +00:00
type->AddField(name->Name, thisfieldtype, varflags);
}
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
name = static_cast<ZCC_VarName*>(name->SiblingNext);
} while (name != field->Names);
Fields.Delete(0);
}
return Fields.Size() == 0;
}
//==========================================================================
//
// ZCCCompiler :: FieldFlagsToString
//
// creates a string for a field's flags
//
//==========================================================================
FString ZCCCompiler::FlagsToString(uint32_t flags)
{
const char *flagnames[] = { "native", "static", "private", "protected", "latent", "final", "meta", "action", "deprecated", "readonly", "funcconst", "abstract" };
FString build;
for (int i = 0; i < 12; i++)
{
if (flags & (1 << i))
{
if (build.IsNotEmpty()) build += ", ";
build += flagnames[i];
}
}
return build;
}
//==========================================================================
//
// ZCCCompiler :: DetermineType
//
// retrieves the type for this field, for arrays the type of a single entry.
//
//==========================================================================
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
PType *ZCCCompiler::DetermineType(PType *outertype, ZCC_TreeNode *field, FName name, ZCC_Type *ztype, bool allowarraytypes)
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
{
if (!allowarraytypes && ztype->ArraySize != nullptr)
{
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
Error(field, "%s: Array type not allowed", name.GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
return TypeError;
}
switch (ztype->NodeType)
{
case AST_BasicType:
{
auto btype = static_cast<ZCC_BasicType *>(ztype);
switch (btype->Type)
{
case ZCC_SInt8:
return TypeSInt8;
case ZCC_UInt8:
return TypeUInt8;
case ZCC_SInt16:
return TypeSInt16;
case ZCC_UInt16:
return TypeUInt16;
case ZCC_SInt32:
case ZCC_IntAuto: // todo: for enums, autoselect appropriately sized int
return TypeSInt32;
case ZCC_UInt32:
return TypeUInt32;
case ZCC_Bool:
return TypeBool;
// Do we really want to allow single precision floats, despite all the problems they cause?
// These are nearly guaranteed to desync between MSVC and GCC on x87, because GCC does not implement an IEEE compliant mode
case ZCC_Float32:
case ZCC_FloatAuto:
//return TypeFloat32;
case ZCC_Float64:
return TypeFloat64;
case ZCC_String:
return TypeString;
case ZCC_Name:
return TypeName;
case ZCC_Vector2:
return TypeVector2;
case ZCC_Vector3:
return TypeVector3;
case ZCC_Vector4:
// This has almost no use, so we really shouldn't bother.
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
Error(field, "vector<4> not implemented for %s", name.GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
return TypeError;
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
case ZCC_State:
return TypeState;
case ZCC_Color:
return TypeColor;
case ZCC_Sound:
return TypeSound;
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
case ZCC_UserType:
return ResolveUserType(btype, &outertype->Symbols);
break;
}
}
case AST_MapType:
if (allowarraytypes)
{
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
Error(field, "%s: Map types not implemented yet", name.GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
// Todo: Decide what we allow here and if it makes sense to allow more complex constructs.
auto mtype = static_cast<ZCC_MapType *>(ztype);
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
return NewMap(DetermineType(outertype, field, name, mtype->KeyType, false), DetermineType(outertype, field, name, mtype->ValueType, false));
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
break;
case AST_DynArrayType:
if (allowarraytypes)
{
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
Error(field, "%s: Dynamic array types not implemented yet", name.GetChars());
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
auto atype = static_cast<ZCC_DynArrayType *>(ztype);
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
return NewDynArray(DetermineType(outertype, field, name, atype->ElementType, false));
- parse the list of class/struct fields and add the PField entries to their type. - fixed a few issues with trying to access a class's Type before it got initialized.
2016-10-09 13:47:31 +00:00
}
break;
case AST_ClassType:
{
auto ctype = static_cast<ZCC_ClassType *>(ztype);
if (ctype->Restriction == nullptr)
{
return NewClassPointer(RUNTIME_CLASS(DObject));
}
else
{
auto sym = outertype->Symbols.FindSymbol(ctype->Restriction->Id, true);
if (sym == nullptr) sym = GlobalSymbols.FindSymbol(ctype->Restriction->Id, false);
if (sym == nullptr)
{
Error(field, "%s: Unknown identifier", FName(ctype->Restriction->Id).GetChars());
return TypeError;
}
auto typesym = dyn_cast<PSymbolType>(sym);
if (typesym == nullptr || !typesym->Type->IsKindOf(RUNTIME_CLASS(PClass)))
{
Error(field, "%s does not represent a class type", FName(ctype->Restriction->Id).GetChars());
return TypeError;
}
return NewClassPointer(static_cast<PClass *>(typesym->Type));
}
}
}
return TypeError;
}
//==========================================================================
//
// ZCCCompiler :: ResolveUserType
//
// resolves a user type and returns a matching PType
//
//==========================================================================
PType *ZCCCompiler::ResolveUserType(ZCC_BasicType *type, PSymbolTable *symt)
{
// Check the symbol table for the identifier.
PSymbolTable *table;
PSymbol *sym = symt->FindSymbolInTable(type->UserType->Id, table);
// GlobalSymbols cannot be the parent of a class's symbol table so we have to look for global symbols explicitly.
if (sym == nullptr && symt != &GlobalSymbols) sym = GlobalSymbols.FindSymbolInTable(type->UserType->Id, table);
if (sym != nullptr && sym->IsKindOf(RUNTIME_CLASS(PSymbolType)))
{
auto type = static_cast<PSymbolType *>(sym)->Type;
if (type->IsKindOf(RUNTIME_CLASS(PEnum)))
{
return TypeSInt32; // hack this to an integer until we can resolve the enum mess.
}
return type;
}
return TypeError;
}
//==========================================================================
//
// ZCCCompiler :: ResolveArraySize
//
// resolves the array size and returns a matching type.
//
//==========================================================================
PType *ZCCCompiler::ResolveArraySize(PType *baseType, ZCC_Expression *arraysize, PSymbolTable *sym)
{
// The duplicate Simplify call is necessary because if the head node gets replaced there is no way to detect the end of the list otherwise.
arraysize = Simplify(arraysize, sym);
ZCC_Expression *val;
do
{
val = Simplify(arraysize, sym);
if (val->Operation != PEX_ConstValue || !val->Type->IsA(RUNTIME_CLASS(PInt)))
{
Error(arraysize, "Array index must be an integer constant");
return TypeError;
}
int size = static_cast<ZCC_ExprConstant *>(val)->IntVal;
if (size < 1)
{
Error(arraysize, "Array size must be positive");
return TypeError;
}
baseType = NewArray(baseType, size);
val = static_cast<ZCC_Expression *>(val->SiblingNext);
} while (val != arraysize);
return baseType;
}
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
//==========================================================================
//
// ZCCCompiler :: GetInt - Input must be a constant expression
//
//==========================================================================
int ZCCCompiler::GetInt(ZCC_Expression *expr)
{
if (expr->Type == TypeError)
{
return 0;
}
const PType::Conversion *route[CONVERSION_ROUTE_SIZE];
int routelen = expr->Type->FindConversion(TypeSInt32, route, countof(route));
if (routelen < 0)
{
Error(expr, "Cannot convert to integer");
return 0;
}
else
{
if (expr->Type->IsKindOf(RUNTIME_CLASS(PFloat)))
{
Warn(expr, "Truncation of floating point value");
}
auto ex = static_cast<ZCC_ExprConstant *>(ApplyConversion(expr, route, routelen));
return ex->IntVal;
}
}
double ZCCCompiler::GetDouble(ZCC_Expression *expr)
{
if (expr->Type == TypeError)
{
return 0;
}
const PType::Conversion *route[CONVERSION_ROUTE_SIZE];
int routelen = expr->Type->FindConversion(TypeFloat64, route, countof(route));
if (routelen < 0)
{
Error(expr, "Cannot convert to float");
return 0;
}
else
{
auto ex = static_cast<ZCC_ExprConstant *>(ApplyConversion(expr, route, routelen));
return ex->DoubleVal;
}
}
const char *ZCCCompiler::GetString(ZCC_Expression *expr, bool silent)
{
if (expr->Type == TypeError)
{
return 0;
}
else if (expr->Type->IsKindOf(RUNTIME_CLASS(PString)))
{
return static_cast<ZCC_ExprConstant *>(expr)->StringVal->GetChars();
}
else if (expr->Type->IsKindOf(RUNTIME_CLASS(PName)))
{
// Ugh... What a mess...
return FName(ENamedName(static_cast<ZCC_ExprConstant *>(expr)->IntVal)).GetChars();
}
else
{
if (!silent) Error(expr, "Cannot convert to string");
return 0;
}
}
//==========================================================================
//
// Parses an actor property's parameters and calls the handler
//
//==========================================================================
void ZCCCompiler::DispatchProperty(FPropertyInfo *prop, ZCC_PropertyStmt *property, AActor *defaults, Baggage &bag)
{
static TArray<FPropParam> params;
static TArray<FString> strings;
params.Clear();
strings.Clear();
params.Reserve(1);
params[0].i = 0;
if (prop->params[0] != '0')
{
if (property->Values == nullptr)
{
Error(property, "%s: arguments missing", prop->name);
return;
}
property->Values = Simplify(property->Values, &bag.Info->Symbols); // need to do this before the loop so that we can find the head node again.
const char * p = prop->params;
auto exp = property->Values;
while (true)
{
FPropParam conv;
FPropParam pref;
if (exp->NodeType != AST_ExprConstant)
{
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
// If we get TypeError, there has already been a message from deeper down so do not print another one.
if (exp->Type != TypeError) Error(exp, "%s: non-constant parameter", prop->name);
return;
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
}
conv.s = nullptr;
pref.s = nullptr;
pref.i = -1;
switch ((*p) & 223)
{
case 'X': // Expression in parentheses or number. We only support the constant here. The function will have to be handled by a separate property to get past the parser.
- fixed parsing of 'damage' default property. - fixed processing of goto labels.
2016-10-13 20:52:31 +00:00
conv.i = GetInt(exp);
params.Push(conv);
conv.exp = nullptr;
break;
case 'I':
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
case 'M': // special case for morph styles in DECORATE . This expression-aware parser will not need this.
case 'N': // special case for thing activations in DECORATE. This expression-aware parser will not need this.
conv.i = GetInt(exp);
break;
case 'F':
conv.d = GetDouble(exp);
break;
case 'Z': // an optional string. Does not allow any numerical value.
if (!GetString(exp, true))
{
// apply this expression to the next argument on the list.
params.Push(conv);
params[0].i++;
p++;
continue;
}
// fall through
case 'C': // this parser accepts colors only in string form.
pref.i = 1;
case 'S':
conv.s = GetString(exp);
break;
case 'T': // a filtered string
conv.s = strings[strings.Reserve(1)] = strbin1(GetString(exp));
break;
case 'L': // Either a number or a list of strings
if (!GetString(exp, true))
{
pref.i = 0;
conv.i = GetInt(exp);
}
else
{
pref.i = 1;
params.Push(pref);
params[0].i++;
do
{
conv.s = GetString(exp);
if (conv.s != nullptr)
{
params.Push(conv);
params[0].i++;
}
exp = Simplify(static_cast<ZCC_Expression *>(exp->SiblingNext), &bag.Info->Symbols);
} while (exp != property->Values);
goto endofparm;
}
break;
default:
assert(false);
break;
}
if (pref.i != -1)
{
params.Push(pref);
params[0].i++;
}
params.Push(conv);
params[0].i++;
exp = Simplify(static_cast<ZCC_Expression *>(exp->SiblingNext), &bag.Info->Symbols);
endofparm:
p++;
// Skip the DECORATE 'no comma' marker
if (*p == '_') p++;
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
if (*p == 0)
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
{
if (exp != property->Values)
{
Error(property, "Too many values for '%s'", prop->name);
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
return;
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
}
break;
}
else if (exp == property->Values)
{
if (*p < 'a')
{
Error(property, "Insufficient parameters for %s", prop->name);
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
return;
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
}
break;
}
}
}
// call the handler
try
{
prop->Handler(defaults, bag.Info, bag, &params[0]);
}
catch (CRecoverableError &error)
{
Error(property, "%s", error.GetMessage());
}
}
//==========================================================================
//
// Parses an actor property
//
//==========================================================================
void ZCCCompiler::ProcessDefaultProperty(PClassActor *cls, ZCC_PropertyStmt *prop, Baggage &bag)
{
auto namenode = prop->Prop;
FString propname;
if (namenode->SiblingNext == namenode)
{
// a one-name property
propname = FName(namenode->Id);
}
else if (namenode->SiblingNext->SiblingNext == namenode)
{
// a two-name property
propname << FName(namenode->Id) << "." << FName(static_cast<ZCC_Identifier *>(namenode->SiblingNext)->Id);
}
else
{
Error(prop, "Property name may at most contain two parts");
return;
}
FPropertyInfo *property = FindProperty(propname);
if (property != nullptr && property->category != CAT_INFO)
{
if (cls->IsDescendantOf(*property->cls))
{
DispatchProperty(property, prop, (AActor *)bag.Info->Defaults, bag);
}
else
{
Error(prop, "'%s' requires an actor of type '%s'\n", propname.GetChars(), (*property->cls)->TypeName.GetChars());
}
}
else
{
Error(prop, "'%s' is an unknown actor property\n", propname.GetChars());
}
}
//==========================================================================
//
// Finds a flag and sets or clears it
//
//==========================================================================
void ZCCCompiler::ProcessDefaultFlag(PClassActor *cls, ZCC_FlagStmt *flg)
{
auto namenode = flg->name;
const char *n1 = FName(namenode->Id).GetChars(), *n2;
if (namenode->SiblingNext == namenode)
{
// a one-name flag
n2 = nullptr;
}
else if (namenode->SiblingNext->SiblingNext == namenode)
{
// a two-name flag
n2 = FName(static_cast<ZCC_Identifier *>(namenode->SiblingNext)->Id).GetChars();
}
else
{
Error(flg, "Flag name may at most contain two parts");
return;
}
auto fd = FindFlag(cls, n1, n2, true);
if (fd != nullptr)
{
if (fd->structoffset == -1)
{
Warn(flg, "Deprecated flag '%s%s%s' used", n1, n2 ? "." : "", n2 ? n2 : "");
HandleDeprecatedFlags((AActor*)cls->Defaults, cls, flg->set, fd->flagbit);
}
else
{
ModActorFlag((AActor*)cls->Defaults, fd, flg->set);
}
}
else
{
Error(flg, "Unknown flag '%s%s%s'", n1, n2 ? "." : "", n2 ? n2 : "");
}
}
//==========================================================================
//
// Parses the default list
//
//==========================================================================
void ZCCCompiler::InitDefaults()
{
for (auto c : Classes)
{
// This may be removed if the conditions change, but right now only subclasses of Actor can define a Default block.
if (!c->Type()->IsDescendantOf(RUNTIME_CLASS(AActor)))
{
if (c->Defaults.Size()) Error(c->cls, "%s: Non-actor classes may not have defaults", c->Type()->TypeName.GetChars());
}
else
{
// This should never happen.
if (c->Type()->Defaults != nullptr)
{
Error(c->cls, "%s already has defaults", c->Type()->TypeName.GetChars());
}
// This can only occur if a native parent is not initialized. In all other cases the sorting of the class list should prevent this from ever happening.
else if (c->Type()->ParentClass->Defaults == nullptr && c->Type() != RUNTIME_CLASS(AActor))
{
Error(c->cls, "Parent class %s of %s is not initialized", c->Type()->ParentClass->TypeName.GetChars(), c->Type()->TypeName.GetChars());
}
else
{
// Copy the parent's defaults and meta data.
auto ti = static_cast<PClassActor *>(c->Type());
ti->InitializeNativeDefaults();
ti->ParentClass->DeriveData(ti);
Baggage bag;
#ifdef _DEBUG
bag.ClassName = c->Type()->TypeName;
#endif
bag.Info = ti;
bag.DropItemSet = false;
bag.StateSet = false;
bag.fromZScript = true;
bag.CurrentState = 0;
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
bag.Lumpnum = c->cls->SourceLump;
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
bag.DropItemList = nullptr;
bag.ScriptPosition.StrictErrors = true;
// The actual script position needs to be set per property.
for (auto d : c->Defaults)
{
auto content = d->Content;
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
if (content != nullptr) do
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
{
switch (content->NodeType)
{
case AST_PropertyStmt:
bag.ScriptPosition.FileName = *content->SourceName;
bag.ScriptPosition.ScriptLine = content->SourceLoc;
ProcessDefaultProperty(ti, static_cast<ZCC_PropertyStmt *>(content), bag);
break;
case AST_FlagStmt:
ProcessDefaultFlag(ti, static_cast<ZCC_FlagStmt *>(content));
break;
}
content = static_cast<decltype(content)>(content->SiblingNext);
} while (content != d->Content);
}
- resorted some of thingdef.cpp's contents into more appropriate files. - split FinishActor into several functions. While DECORATE can, ZSCRIPT cannot do all this in one go. - split the state finalization into several class-specific virtual functions.
2016-10-12 18:42:41 +00:00
if (bag.DropItemSet)
{
bag.Info->SetDropItems(bag.DropItemList);
}
- implemented the Defaults property initializer. This uses the same property and flag tables as DECORATE with a few changes: * it sets the parse mode to strict, so that several DECORATE warnings are now errors. * trying to change a deprecated flag will print a warning. * setting of editor numbers, spawn and conversation ID id not possible. Use MAPINFO to do this. * all subclass flags must use the qualified name now (e.g. +ALWAYSPICKUP will print an error.) * the scriptable Damage property is not yet implemented. This will require a special case with a differently named property in the processing function because in the AST it is no longer possible to distinguish between a damage value and a constant damage function.
2016-10-10 22:56:47 +00:00
}
}
}
}
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
//==========================================================================
//
// Parses the functions list
//
//==========================================================================
void ZCCCompiler::InitFunctions()
{
TArray<PType *> rets(1);
TArray<PType *> args;
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
TArray<uint32_t> argflags;
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
TArray<FName> argnames;
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
for (auto c : Classes)
{
for (auto f : c->Functions)
{
rets.Clear();
args.Clear();
argflags.Clear();
// For the time being, let's not allow overloading. This may be reconsidered later but really just adds an unnecessary amount of complexity here.
if (AddTreeNode(f->Name, f, &c->TreeNodes, false))
{
auto t = f->Type;
if (t != nullptr)
{
do
{
auto type = DetermineType(c->Type(), f, f->Name, t, false);
// TBD: disallow certain types? For now, let everything pass that isn't an array.
rets.Push(type);
t = static_cast<decltype(t)>(t->SiblingNext);
} while (t != f->Type);
}
int notallowed = ZCC_Latent | ZCC_Meta | ZCC_ReadOnly | ZCC_FuncConst | ZCC_Abstract;
if (f->Flags & notallowed)
{
Error(f, "Invalid qualifiers for %s (%s not allowed)", FName(f->Name).GetChars(), FlagsToString(f->Flags & notallowed));
f->Flags &= notallowed;
}
uint32_t varflags = VARF_Method;
AFuncDesc *afd = nullptr;
// map to implementation flags.
if (f->Flags & ZCC_Private) varflags |= VARF_Private;
if (f->Flags & ZCC_Protected) varflags |= VARF_Protected;
if (f->Flags & ZCC_Deprecated) varflags |= VARF_Deprecated;
if (f->Flags & ZCC_Action) varflags |= VARF_Action|VARF_Final; // Action implies Final.
if (f->Flags & ZCC_Static) varflags = (varflags & ~VARF_Method) | VARF_Final; // Static implies Final.
if ((f->Flags & (ZCC_Action | ZCC_Static)) == (ZCC_Action | ZCC_Static))
{
Error(f, "%s: Action and Static on the same function is not allowed.", FName(f->Name).GetChars());
varflags |= VARF_Method;
}
if (f->Flags & ZCC_Native)
{
varflags |= VARF_Native;
afd = FindFunction(FName(f->Name).GetChars());
if (afd == nullptr)
{
Error(f, "The function '%s' has not been exported from the executable.", FName(f->Name).GetChars());
}
}
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
SetImplicitArgs(&args, &argflags, &argnames, c->Type(), varflags);
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
auto p = f->Params;
if (p != nullptr)
{
do
{
if (p->Type != nullptr)
{
auto type = DetermineType(c->Type(), p, f->Name, p->Type, false);
int flags;
if (p->Flags & ZCC_In) flags |= VARF_In;
if (p->Flags & ZCC_Out) flags |= VARF_Out;
if (p->Default != nullptr)
{
auto val = Simplify(p->Default, &c->Type()->Symbols);
flags |= VARF_Optional;
if (val->Operation != PEX_ConstValue)
{
Error(c->cls, "Default parameter %s is not constant in %s", FName(p->Name).GetChars(), FName(f->Name).GetChars());
}
// Todo: Store and handle the default value (native functions will discard it anyway but for scripted ones this should be done decently.)
}
// TBD: disallow certain types? For now, let everything pass that isn't an array.
args.Push(type);
argflags.Push(flags);
}
else
{
args.Push(nullptr);
argflags.Push(0);
}
p = static_cast<decltype(p)>(p->SiblingNext);
} while (p != f->Params);
}
PFunction *sym = new PFunction(f->Name);
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
sym->AddVariant(NewPrototype(rets, args), argflags, argnames, afd == nullptr? nullptr : *(afd->VMPointer));
- initialize function symbols. At the moment all it does is process the existing native functions. Any further processing will be done once the base classes of the engine can be parsed from the scripting files. - switched the types of the internal 'self' and 'stateowner' parameters so that they get assigned correctly. I can't tell if this will error out if fields get accessed from the caller with the wrong class, but for actual scripting to work these must be correct. The committed 'actor.txt' can be parsed successfully, with the exception of a few subclass references that cannot be resolved yet.
2016-10-11 16:53:10 +00:00
sym->Flags = varflags;
c->Type()->Symbols.ReplaceSymbol(sym);
// todo: Check inheritance.
// todo: Process function bodies.
}
}
}
}
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
//==========================================================================
//
// very complicated check for random duration.
//
//==========================================================================
static bool CheckRandom(ZCC_Expression *duration)
{
if (duration->NodeType != AST_ExprFuncCall) return false;
auto func = static_cast<ZCC_ExprFuncCall *>(duration);
if (func->Function == nullptr) return false;
if (func->Function->NodeType != AST_ExprID) return false;
auto f2 = static_cast<ZCC_ExprID *>(func->Function);
return f2->Identifier == NAME_Random;
}
//==========================================================================
//
// Sets up the action function call
//
//==========================================================================
FxExpression *ZCCCompiler::SetupActionFunction(PClassActor *cls, ZCC_TreeNode *af)
{
// We have 3 cases to consider here:
// 1. An action function without parameters. This can be called directly
// 2. An action functon with parameters or a non-action function. This needs to be wrapped into a helper function to set everything up.
// 3. An anonymous function.
// 1. and 2. are exposed through AST_ExprFunctionCall
if (af->NodeType == AST_ExprFuncCall)
{
auto fc = static_cast<ZCC_ExprFuncCall *>(af);
assert(fc->Function->NodeType == AST_ExprID);
auto id = static_cast<ZCC_ExprID *>(fc->Function);
PFunction *afd = dyn_cast<PFunction>(cls->Symbols.FindSymbol(id->Identifier, true));
if (afd != nullptr)
{
if (fc->Parameters == nullptr && (afd->Flags & VARF_Action))
{
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
// We can use this function directly without wrapping it in a caller.
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
return new FxVMFunctionCall(afd, nullptr, *af, true);
}
}
else
{
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
// it may also be an action special so check that first before printing an error.
if (!P_FindLineSpecial(FName(id->Identifier).GetChars()))
{
Error(af, "%s: action function not found in %s", FName(id->Identifier).GetChars(), cls->TypeName.GetChars());
return nullptr;
}
// Action specials fall through to the code generator.
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
}
}
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
ConvertClass = cls;
- converted a few more DECORATE files. - started with the AST converter. So far it only deals with direct function calls with simple constants as parameters. - added an error condition for the defaults block to get rid of some asserts.
2016-10-13 22:40:20 +00:00
return ConvertAST(af);
//Error(af, "Complex action functions not supported yet.");
//return nullptr;
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
/*
bool hasfinalret;
tcall->Code = ParseActions(sc, state, statestring, bag, hasfinalret);
if (!hasfinalret && tcall->Code != nullptr)
{
static_cast<FxSequence *>(tcall->Code)->Add(new FxReturnStatement(nullptr, sc));
}
*/
}
//==========================================================================
//
// Compile the states
//
//==========================================================================
void ZCCCompiler::CompileStates()
{
for (auto c : Classes)
{
if (!c->Type()->IsDescendantOf(RUNTIME_CLASS(AActor)))
{
Error(c->cls, "%s: States can only be defined for actors.", c->Type()->TypeName.GetChars());
continue;
}
FString statename; // The state builder wants the label as one complete string, not separated into tokens.
FStateDefinitions statedef;
- removed token 'mode' because it isn't used anywhere and clashed with some actor properties. - fixed uninitialized counter variable in DECORATE parser. - allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'. - fixed crash with actor replacement in script compiler. - add the lump number to tree nodes because parts of the property parser need that to make decisions. - removed test stuff. - converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully. - removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 18:45:52 +00:00
statedef.MakeStateDefines(dyn_cast<PClassActor>(c->Type()->ParentClass));
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
for (auto s : c->States)
{
auto st = s->Body;
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
if (st != nullptr) do
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
{
switch (st->NodeType)
{
case AST_StateLabel:
{
auto sl = static_cast<ZCC_StateLabel *>(st);
statename = FName(sl->Label);
statedef.AddStateLabel(statename);
break;
}
case AST_StateLine:
{
auto sl = static_cast<ZCC_StateLine *>(st);
FState state;
memset(&state, 0, sizeof(state));
if (sl->Sprite->Len() != 4)
{
Error(sl, "Sprite name must be exactly 4 characters. Found '%s'", sl->Sprite->GetChars());
}
else
{
state.sprite = GetSpriteIndex(sl->Sprite->GetChars());
}
// It is important to call CheckRandom before Simplify, because Simplify will resolve the function's name to nonsense
// and there is little point fixing it because it is essentially useless outside of resolving constants.
if (CheckRandom(sl->Duration))
{
auto func = static_cast<ZCC_ExprFuncCall *>(Simplify(sl->Duration, &c->Type()->Symbols));
if (func->Parameters == func->Parameters->SiblingNext || func->Parameters != func->Parameters->SiblingNext->SiblingNext)
{
Error(sl, "Random duration requires exactly 2 parameters");
}
int v1 = GetInt(func->Parameters->Value);
int v2 = GetInt(static_cast<ZCC_FuncParm *>(func->Parameters->SiblingNext)->Value);
if (v1 > v2) std::swap(v1, v2);
state.Tics = (int16_t)clamp<int>(v1, 0, INT16_MAX);
state.TicRange = (uint16_t)clamp<int>(v2 - v1, 0, UINT16_MAX);
}
else
{
auto duration = Simplify(sl->Duration, &c->Type()->Symbols);
if (duration->Operation == PEX_ConstValue)
{
state.Tics = (int16_t)clamp<int>(GetInt(duration), -1, INT16_MAX);
state.TicRange = 0;
}
else
{
Error(sl, "Duration is not a constant");
}
}
state.Fullbright = sl->bBright;
state.Fast = sl->bFast;
state.Slow = sl->bSlow;
state.CanRaise = sl->bCanRaise;
if ((state.NoDelay = sl->bNoDelay))
{
if (statedef.GetStateLabelIndex(NAME_Spawn) != statedef.GetStateCount())
{
Warn(sl, "NODELAY only has an effect on the first state after 'Spawn:'");
}
}
if (sl->Offset != nullptr)
{
auto o1 = static_cast<ZCC_Expression *>(Simplify(sl->Offset, &c->Type()->Symbols));
auto o2 = static_cast<ZCC_Expression *>(Simplify(static_cast<ZCC_Expression *>(o1->SiblingNext), &c->Type()->Symbols));
if (o1->Operation != PEX_ConstValue || o2->Operation != PEX_ConstValue)
{
Error(o1, "State offsets must be constant");
}
else
{
state.Misc1 = GetInt(o1);
state.Misc2 = GetInt(o2);
}
}
#ifdef DYNLIGHT
if (sl->Lights != nullptr)
{
auto l = sl->Lights;
do
{
AddStateLight(&state, GetString(l));
l = static_cast<decltype(l)>(l->SiblingNext);
} while (l != sl->Lights);
}
#endif
if (sl->Action != nullptr)
{
auto code = SetupActionFunction(static_cast<PClassActor *>(c->Type()), sl->Action);
if (code != nullptr)
{
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
auto funcsym = CreateAnonymousFunction(c->Type(), nullptr, VARF_Method | VARF_Action);
state.ActionFunc = FunctionBuildList.AddFunction(funcsym, code, FStringf("%s.StateFunction.%d", c->Type()->TypeName.GetChars(), statedef.GetStateCount()), true);
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
}
}
- fixed order of state setup. It looks like the setup of the action function and the adding of the states got inverted by something I tried, leaving the ActionFunc member empty on the real states.
2016-10-14 19:56:45 +00:00
int count = statedef.AddStates(&state, sl->Frames->GetChars());
if (count < 0)
{
Error(sl, "Invalid frame character string '%s'", sl->Frames->GetChars());
count = -count;
}
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
break;
}
case AST_StateGoto:
{
auto sg = static_cast<ZCC_StateGoto *>(st);
statename = "";
if (sg->Qualifier != nullptr)
{
- converted all of Doom's actors. - fixed a few problems that were encountered during conversion: * action specials as action functions were not recognized by the parser. * Player.StartItem could not be parsed. * disabled the naming hack for PowerupType. ZScript, unlike DECORATE will never prepend 'Power' to the power's name, it always needs to specified by its full name. * states and defaults were not checked for empty bodies. * the scope qualifier for goto labels was not properly converted to a string, because it is an ENamedName, not an FName.
2016-10-14 18:08:41 +00:00
statename << FName(sg->Qualifier->Id) << "::";
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
}
auto part = sg->Label;
do
{
- fixed parsing of 'damage' default property. - fixed processing of goto labels.
2016-10-13 20:52:31 +00:00
statename << FName(part->Id) << '.';
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
part = static_cast<decltype(part)>(part->SiblingNext);
} while (part != sg->Label);
statename.Truncate((long)statename.Len() - 1); // remove the last '.' in the label name
if (sg->Offset != nullptr)
{
auto ofs = Simplify(sg->Offset, &c->Type()->Symbols);
if (ofs->Operation != PEX_ConstValue)
{
Error(sg, "Constant offset expected for GOTO");
}
else
{
int offset = GetInt(ofs);
if (offset < 0)
{
Error(sg, "GOTO offset must be positive");
offset = 0;
}
if (offset > 0)
{
statename.AppendFormat("+%d", offset);
}
}
}
if (!statedef.SetGotoLabel(statename))
{
Error(sg, "GOTO before first state");
}
break;
}
case AST_StateFail:
case AST_StateWait:
if (!statedef.SetWait())
{
Error(st, "%s before first state", st->NodeType == AST_StateFail ? "Fail" : "Wait");
continue;
}
break;
case AST_StateLoop:
if (!statedef.SetLoop())
{
Error(st, "LOOP before first state");
continue;
}
break;
case AST_StateStop:
if (!statedef.SetStop())
{
Error(st, "STOP before first state");
}
break;
default:
assert(0 && "Bad AST node in state");
}
st = static_cast<decltype(st)>(st->SiblingNext);
} while (st != s->Body);
}
- resorted some of thingdef.cpp's contents into more appropriate files. - split FinishActor into several functions. While DECORATE can, ZSCRIPT cannot do all this in one go. - split the state finalization into several class-specific virtual functions.
2016-10-12 18:42:41 +00:00
try
{
static_cast<PClassActor *>(c->Type())->Finalize(statedef);
}
catch (CRecoverableError &err)
{
Error(c->cls, "%s", err.GetMessage());
}
- implemented the state compiler. So far all it can handle is parameter-less functions. To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 15:50:23 +00:00
}
}
- converted a few more DECORATE files. - started with the AST converter. So far it only deals with direct function calls with simple constants as parameters. - added an error condition for the defaults block to get rid of some asserts.
2016-10-13 22:40:20 +00:00
//==========================================================================
//
// Convert the AST data for the code generator.
//
//==========================================================================
FxExpression *ZCCCompiler::ConvertAST(ZCC_TreeNode *ast)
{
// FxReturnStatement will have to be done more intelligently, of course.
return new FxReturnStatement(ConvertNode(ast), *ast);
}
FxExpression *ZCCCompiler::ConvertNode(ZCC_TreeNode *ast)
{
// Note: Do not call 'Simplify' here because that function tends to destroy identifiers due to lack of context in which to resolve them.
// The Fx nodes created here will be better suited for that.
switch (ast->NodeType)
{
case AST_ExprFuncCall:
{
auto fcall = static_cast<ZCC_ExprFuncCall *>(ast);
assert(fcall->Function->NodeType == AST_ExprID); // of course this cannot remain. Right now nothing more complex can come along but later this will have to be decomposed into 'self' and the actual function name.
auto fname = static_cast<ZCC_ExprID *>(fcall->Function)->Identifier;
return new FxFunctionCall(nullptr, fname, ConvertNodeList(fcall->Parameters), *ast);
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
//return ConvertFunctionCall(fcall->Function, ConvertNodeList(fcall->Parameters), ConvertClass, *ast);
- converted a few more DECORATE files. - started with the AST converter. So far it only deals with direct function calls with simple constants as parameters. - added an error condition for the defaults block to get rid of some asserts.
2016-10-13 22:40:20 +00:00
}
case AST_FuncParm:
{
auto fparm = static_cast<ZCC_FuncParm *>(ast);
// ignore the label for now, that's stuff for far later, when a bit more here is working.
return ConvertNode(fparm->Value);
}
case AST_ExprConstant:
{
auto cnst = static_cast<ZCC_ExprConstant *>(ast);
if (cnst->Type->IsKindOf(RUNTIME_CLASS(PInt)))
{
return new FxConstant(cnst->IntVal, *ast);
}
else if (cnst->Type->IsKindOf(RUNTIME_CLASS(PFloat)))
{
return new FxConstant(cnst->DoubleVal, *ast);
}
else if (cnst->Type->IsKindOf(RUNTIME_CLASS(PString)))
{
return new FxConstant(*cnst->StringVal, *ast);
}
else if (cnst->Type->IsKindOf(RUNTIME_CLASS(PName)))
{
return new FxConstant(ENamedName(cnst->IntVal), *ast);
}
else
{
// can there be other types?
Error(cnst, "Unknown constant type");
return new FxConstant(0, *ast);
}
}
default:
// only for development. I_Error is more convenient here than a normal error.
I_Error("ConvertNode encountered unsupported node of type %d", ast->NodeType);
return nullptr;
}
}
FArgumentList *ZCCCompiler::ConvertNodeList(ZCC_TreeNode *head)
{
FArgumentList *list = new FArgumentList;
auto node = head;
do
{
list->Push(ConvertNode(node));
node = node->SiblingNext;
} while (node != head);
return list;
}
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