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dhewm3/neo/game/script/Script_Program.cpp

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hello world
2011-11-22 21:28:15 +00:00
/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#include "../../idlib/precompiled.h"
#pragma hdrstop
#include "../Game_local.h"
// simple types. function types are dynamically allocated
idTypeDef type_void( ev_void, &def_void, "void", 0, NULL );
idTypeDef type_scriptevent( ev_scriptevent, &def_scriptevent, "scriptevent", sizeof( void * ), NULL );
idTypeDef type_namespace( ev_namespace, &def_namespace, "namespace", sizeof( void * ), NULL );
idTypeDef type_string( ev_string, &def_string, "string", MAX_STRING_LEN, NULL );
idTypeDef type_float( ev_float, &def_float, "float", sizeof( float ), NULL );
idTypeDef type_vector( ev_vector, &def_vector, "vector", sizeof( idVec3 ), NULL );
idTypeDef type_entity( ev_entity, &def_entity, "entity", sizeof( int * ), NULL ); // stored as entity number pointer
idTypeDef type_field( ev_field, &def_field, "field", sizeof( void * ), NULL );
idTypeDef type_function( ev_function, &def_function, "function", sizeof( void * ), &type_void );
idTypeDef type_virtualfunction( ev_virtualfunction, &def_virtualfunction, "virtual function", sizeof( int ), NULL );
idTypeDef type_pointer( ev_pointer, &def_pointer, "pointer", sizeof( void * ), NULL );
idTypeDef type_object( ev_object, &def_object, "object", sizeof( int * ), NULL ); // stored as entity number pointer
idTypeDef type_jumpoffset( ev_jumpoffset, &def_jumpoffset, "<jump>", sizeof( int ), NULL ); // only used for jump opcodes
idTypeDef type_argsize( ev_argsize, &def_argsize, "<argsize>", sizeof( int ), NULL ); // only used for function call and thread opcodes
idTypeDef type_boolean( ev_boolean, &def_boolean, "boolean", sizeof( int ), NULL );
idVarDef def_void( &type_void );
idVarDef def_scriptevent( &type_scriptevent );
idVarDef def_namespace( &type_namespace );
idVarDef def_string( &type_string );
idVarDef def_float( &type_float );
idVarDef def_vector( &type_vector );
idVarDef def_entity( &type_entity );
idVarDef def_field( &type_field );
idVarDef def_function( &type_function );
idVarDef def_virtualfunction( &type_virtualfunction );
idVarDef def_pointer( &type_pointer );
idVarDef def_object( &type_object );
idVarDef def_jumpoffset( &type_jumpoffset ); // only used for jump opcodes
idVarDef def_argsize( &type_argsize );
idVarDef def_boolean( &type_boolean );
/***********************************************************************
function_t
***********************************************************************/
/*
================
function_t::function_t
================
*/
function_t::function_t() {
Clear();
}
/*
================
function_t::Allocated
================
*/
size_t function_t::Allocated( void ) const {
return name.Allocated() + parmSize.Allocated();
}
/*
================
function_t::SetName
================
*/
void function_t::SetName( const char *name ) {
this->name = name;
}
/*
================
function_t::Name
================
*/
const char *function_t::Name( void ) const {
return name;
}
/*
================
function_t::Clear
================
*/
void function_t::Clear( void ) {
eventdef = NULL;
def = NULL;
type = NULL;
firstStatement = 0;
numStatements = 0;
parmTotal = 0;
locals = 0;
filenum = 0;
name.Clear();
parmSize.Clear();
}
/***********************************************************************
idTypeDef
***********************************************************************/
/*
================
idTypeDef::idTypeDef
================
*/
idTypeDef::idTypeDef( etype_t etype, idVarDef *edef, const char *ename, int esize, idTypeDef *aux ) {
name = ename;
type = etype;
def = edef;
size = esize;
auxType = aux;
parmTypes.SetGranularity( 1 );
parmNames.SetGranularity( 1 );
functions.SetGranularity( 1 );
}
/*
================
idTypeDef::idTypeDef
================
*/
idTypeDef::idTypeDef( const idTypeDef &other ) {
*this = other;
}
/*
================
idTypeDef::operator=
================
*/
void idTypeDef::operator=( const idTypeDef& other ) {
type = other.type;
def = other.def;
name = other.name;
size = other.size;
auxType = other.auxType;
parmTypes = other.parmTypes;
parmNames = other.parmNames;
functions = other.functions;
}
/*
================
idTypeDef::Allocated
================
*/
size_t idTypeDef::Allocated( void ) const {
size_t memsize;
int i;
memsize = name.Allocated() + parmTypes.Allocated() + parmNames.Allocated() + functions.Allocated();
for( i = 0; i < parmTypes.Num(); i++ ) {
memsize += parmNames[ i ].Allocated();
}
return memsize;
}
/*
================
idTypeDef::Inherits
Returns true if basetype is an ancestor of this type.
================
*/
bool idTypeDef::Inherits( const idTypeDef *basetype ) const {
idTypeDef *superType;
if ( type != ev_object ) {
return false;
}
if ( this == basetype ) {
return true;
}
for( superType = auxType; superType != NULL; superType = superType->auxType ) {
if ( superType == basetype ) {
return true;
}
}
return false;
}
/*
================
idTypeDef::MatchesType
Returns true if both types' base types and parameters match
================
*/
bool idTypeDef::MatchesType( const idTypeDef &matchtype ) const {
int i;
if ( this == &matchtype ) {
return true;
}
if ( ( type != matchtype.type ) || ( auxType != matchtype.auxType ) ) {
return false;
}
if ( parmTypes.Num() != matchtype.parmTypes.Num() ) {
return false;
}
for( i = 0; i < matchtype.parmTypes.Num(); i++ ) {
if ( parmTypes[ i ] != matchtype.parmTypes[ i ] ) {
return false;
}
}
return true;
}
/*
================
idTypeDef::MatchesVirtualFunction
Returns true if both functions' base types and parameters match
================
*/
bool idTypeDef::MatchesVirtualFunction( const idTypeDef &matchfunc ) const {
int i;
if ( this == &matchfunc ) {
return true;
}
if ( ( type != matchfunc.type ) || ( auxType != matchfunc.auxType ) ) {
return false;
}
if ( parmTypes.Num() != matchfunc.parmTypes.Num() ) {
return false;
}
if ( parmTypes.Num() > 0 ) {
if ( !parmTypes[ 0 ]->Inherits( matchfunc.parmTypes[ 0 ] ) ) {
return false;
}
}
for( i = 1; i < matchfunc.parmTypes.Num(); i++ ) {
if ( parmTypes[ i ] != matchfunc.parmTypes[ i ] ) {
return false;
}
}
return true;
}
/*
================
idTypeDef::AddFunctionParm
Adds a new parameter for a function type.
================
*/
void idTypeDef::AddFunctionParm( idTypeDef *parmtype, const char *name ) {
if ( type != ev_function ) {
throw idCompileError( "idTypeDef::AddFunctionParm : tried to add parameter on non-function type" );
}
parmTypes.Append( parmtype );
idStr &parmName = parmNames.Alloc();
parmName = name;
}
/*
================
idTypeDef::AddField
Adds a new field to an object type.
================
*/
void idTypeDef::AddField( idTypeDef *fieldtype, const char *name ) {
if ( type != ev_object ) {
throw idCompileError( "idTypeDef::AddField : tried to add field to non-object type" );
}
parmTypes.Append( fieldtype );
idStr &parmName = parmNames.Alloc();
parmName = name;
if ( fieldtype->FieldType()->Inherits( &type_object ) ) {
size += type_object.Size();
} else {
size += fieldtype->FieldType()->Size();
}
}
/*
================
idTypeDef::SetName
================
*/
void idTypeDef::SetName( const char *newname ) {
name = newname;
}
/*
================
idTypeDef::Name
================
*/
const char *idTypeDef::Name( void ) const {
return name;
}
/*
================
idTypeDef::Type
================
*/
etype_t idTypeDef::Type( void ) const {
return type;
}
/*
================
idTypeDef::Size
================
*/
int idTypeDef::Size( void ) const {
return size;
}
/*
================
idTypeDef::SuperClass
If type is an object, then returns the object's superclass
================
*/
idTypeDef *idTypeDef::SuperClass( void ) const {
if ( type != ev_object ) {
throw idCompileError( "idTypeDef::SuperClass : tried to get superclass of a non-object type" );
}
return auxType;
}
/*
================
idTypeDef::ReturnType
If type is a function, then returns the function's return type
================
*/
idTypeDef *idTypeDef::ReturnType( void ) const {
if ( type != ev_function ) {
throw idCompileError( "idTypeDef::ReturnType: tried to get return type on non-function type" );
}
return auxType;
}
/*
================
idTypeDef::SetReturnType
If type is a function, then sets the function's return type
================
*/
void idTypeDef::SetReturnType( idTypeDef *returntype ) {
if ( type != ev_function ) {
throw idCompileError( "idTypeDef::SetReturnType: tried to set return type on non-function type" );
}
auxType = returntype;
}
/*
================
idTypeDef::FieldType
If type is a field, then returns it's type
================
*/
idTypeDef *idTypeDef::FieldType( void ) const {
if ( type != ev_field ) {
throw idCompileError( "idTypeDef::FieldType: tried to get field type on non-field type" );
}
return auxType;
}
/*
================
idTypeDef::SetFieldType
If type is a field, then sets the function's return type
================
*/
void idTypeDef::SetFieldType( idTypeDef *fieldtype ) {
if ( type != ev_field ) {
throw idCompileError( "idTypeDef::SetFieldType: tried to set return type on non-function type" );
}
auxType = fieldtype;
}
/*
================
idTypeDef::PointerType
If type is a pointer, then returns the type it points to
================
*/
idTypeDef *idTypeDef::PointerType( void ) const {
if ( type != ev_pointer ) {
throw idCompileError( "idTypeDef::PointerType: tried to get pointer type on non-pointer" );
}
return auxType;
}
/*
================
idTypeDef::SetPointerType
If type is a pointer, then sets the pointer's type
================
*/
void idTypeDef::SetPointerType( idTypeDef *pointertype ) {
if ( type != ev_pointer ) {
throw idCompileError( "idTypeDef::SetPointerType: tried to set type on non-pointer" );
}
auxType = pointertype;
}
/*
================
idTypeDef::NumParameters
================
*/
int idTypeDef::NumParameters( void ) const {
return parmTypes.Num();
}
/*
================
idTypeDef::GetParmType
================
*/
idTypeDef *idTypeDef::GetParmType( int parmNumber ) const {
assert( parmNumber >= 0 );
assert( parmNumber < parmTypes.Num() );
return parmTypes[ parmNumber ];
}
/*
================
idTypeDef::GetParmName
================
*/
const char *idTypeDef::GetParmName( int parmNumber ) const {
assert( parmNumber >= 0 );
assert( parmNumber < parmTypes.Num() );
return parmNames[ parmNumber ];
}
/*
================
idTypeDef::NumFunctions
================
*/
int idTypeDef::NumFunctions( void ) const {
return functions.Num();
}
/*
================
idTypeDef::GetFunctionNumber
================
*/
int idTypeDef::GetFunctionNumber( const function_t *func ) const {
int i;
for( i = 0; i < functions.Num(); i++ ) {
if ( functions[ i ] == func ) {
return i;
}
}
return -1;
}
/*
================
idTypeDef::GetFunction
================
*/
const function_t *idTypeDef::GetFunction( int funcNumber ) const {
assert( funcNumber >= 0 );
assert( funcNumber < functions.Num() );
return functions[ funcNumber ];
}
/*
================
idTypeDef::AddFunction
================
*/
void idTypeDef::AddFunction( const function_t *func ) {
int i;
for( i = 0; i < functions.Num(); i++ ) {
if ( !strcmp( functions[ i ]->def->Name(), func->def->Name() ) ) {
if ( func->def->TypeDef()->MatchesVirtualFunction( *functions[ i ]->def->TypeDef() ) ) {
functions[ i ] = func;
return;
}
}
}
functions.Append( func );
}
/***********************************************************************
idVarDef
***********************************************************************/
/*
================
idVarDef::idVarDef()
================
*/
idVarDef::idVarDef( idTypeDef *typeptr ) {
typeDef = typeptr;
num = 0;
scope = NULL;
numUsers = 0;
initialized = idVarDef::uninitialized;
memset( &value, 0, sizeof( value ) );
name = NULL;
next = NULL;
}
/*
============
idVarDef::~idVarDef
============
*/
idVarDef::~idVarDef() {
if ( name ) {
name->RemoveDef( this );
}
}
/*
============
idVarDef::Name
============
*/
const char *idVarDef::Name( void ) const {
return name->Name();
}
/*
============
idVarDef::GlobalName
============
*/
const char *idVarDef::GlobalName( void ) const {
if ( scope != &def_namespace ) {
return va( "%s::%s", scope->GlobalName(), name->Name() );
} else {
return name->Name();
}
}
/*
============
idVarDef::DepthOfScope
============
*/
int idVarDef::DepthOfScope( const idVarDef *otherScope ) const {
const idVarDef *def;
int depth;
depth = 1;
for( def = otherScope; def != NULL; def = def->scope ) {
if ( def == scope ) {
return depth;
}
depth++;
}
return 0;
}
/*
============
idVarDef::SetFunction
============
*/
void idVarDef::SetFunction( function_t *func ) {
assert( typeDef );
initialized = initializedConstant;
assert( typeDef->Type() == ev_function );
value.functionPtr = func;
}
/*
============
idVarDef::SetObject
============
*/
void idVarDef::SetObject( idScriptObject *object ) {
assert( typeDef );
initialized = initialized;
assert( typeDef->Inherits( &type_object ) );
*value.objectPtrPtr = object;
}
/*
============
idVarDef::SetValue
============
*/
void idVarDef::SetValue( const eval_t &_value, bool constant ) {
assert( typeDef );
if ( constant ) {
initialized = initializedConstant;
} else {
initialized = initializedVariable;
}
switch( typeDef->Type() ) {
case ev_pointer :
case ev_boolean :
case ev_field :
*value.intPtr = _value._int;
break;
case ev_jumpoffset :
value.jumpOffset = _value._int;
break;
case ev_argsize :
value.argSize = _value._int;
break;
case ev_entity :
*value.entityNumberPtr = _value.entity;
break;
case ev_string :
idStr::Copynz( value.stringPtr, _value.stringPtr, MAX_STRING_LEN );
break;
case ev_float :
*value.floatPtr = _value._float;
break;
case ev_vector :
value.vectorPtr->x = _value.vector[ 0 ];
value.vectorPtr->y = _value.vector[ 1 ];
value.vectorPtr->z = _value.vector[ 2 ];
break;
case ev_function :
value.functionPtr = _value.function;
break;
case ev_virtualfunction :
value.virtualFunction = _value._int;
break;
case ev_object :
*value.entityNumberPtr = _value.entity;
break;
default :
throw idCompileError( va( "weird type on '%s'", Name() ) );
break;
}
}
/*
============
idVarDef::SetString
============
*/
void idVarDef::SetString( const char *string, bool constant ) {
if ( constant ) {
initialized = initializedConstant;
} else {
initialized = initializedVariable;
}
assert( typeDef && ( typeDef->Type() == ev_string ) );
idStr::Copynz( value.stringPtr, string, MAX_STRING_LEN );
}
/*
============
idVarDef::PrintInfo
============
*/
void idVarDef::PrintInfo( idFile *file, int instructionPointer ) const {
statement_t *jumpst;
int jumpto;
etype_t etype;
int i;
int len;
const char *ch;
if ( initialized == initializedConstant ) {
file->Printf( "const " );
}
etype = typeDef->Type();
switch( etype ) {
case ev_jumpoffset :
jumpto = instructionPointer + value.jumpOffset;
jumpst = &gameLocal.program.GetStatement( jumpto );
file->Printf( "address %d [%s(%d)]", jumpto, gameLocal.program.GetFilename( jumpst->file ), jumpst->linenumber );
break;
case ev_function :
if ( value.functionPtr->eventdef ) {
file->Printf( "event %s", GlobalName() );
} else {
file->Printf( "function %s", GlobalName() );
}
break;
case ev_field :
file->Printf( "field %d", value.ptrOffset );
break;
case ev_argsize:
file->Printf( "args %d", value.argSize );
break;
default:
file->Printf( "%s ", typeDef->Name() );
if ( initialized == initializedConstant ) {
switch( etype ) {
case ev_string :
file->Printf( "\"" );
len = strlen( value.stringPtr );
ch = value.stringPtr;
for( i = 0; i < len; i++, ch++ ) {
if ( idStr::CharIsPrintable( *ch ) ) {
file->Printf( "%c", *ch );
} else if ( *ch == '\n' ) {
file->Printf( "\\n" );
} else {
file->Printf( "\\x%.2x", static_cast<int>( *ch ) );
}
}
file->Printf( "\"" );
break;
case ev_vector :
file->Printf( "'%s'", value.vectorPtr->ToString() );
break;
case ev_float :
file->Printf( "%f", *value.floatPtr );
break;
case ev_virtualfunction :
file->Printf( "vtable[ %d ]", value.virtualFunction );
break;
default :
file->Printf( "%d", *value.intPtr );
break;
}
} else if ( initialized == stackVariable ) {
file->Printf( "stack[%d]", value.stackOffset );
} else {
file->Printf( "global[%d]", num );
}
break;
}
}
/***********************************************************************
idVarDef
***********************************************************************/
/*
============
idVarDefName::AddDef
============
*/
void idVarDefName::AddDef( idVarDef *def ) {
assert( def->next == NULL );
def->name = this;
def->next = defs;
defs = def;
}
/*
============
idVarDefName::RemoveDef
============
*/
void idVarDefName::RemoveDef( idVarDef *def ) {
if ( defs == def ) {
defs = def->next;
} else {
for ( idVarDef *d = defs; d->next != NULL; d = d->next ) {
if ( d->next == def ) {
d->next = def->next;
break;
}
}
}
def->next = NULL;
def->name = NULL;
}
/***********************************************************************
idScriptObject
***********************************************************************/
/*
============
idScriptObject::idScriptObject
============
*/
idScriptObject::idScriptObject() {
data = NULL;
type = &type_object;
}
/*
============
idScriptObject::~idScriptObject
============
*/
idScriptObject::~idScriptObject() {
Free();
}
/*
============
idScriptObject::Free
============
*/
void idScriptObject::Free( void ) {
if ( data ) {
Mem_Free( data );
}
data = NULL;
type = &type_object;
}
/*
================
idScriptObject::Save
================
*/
void idScriptObject::Save( idSaveGame *savefile ) const {
size_t size;
if ( type == &type_object && data == NULL ) {
// Write empty string for uninitialized object
savefile->WriteString( "" );
} else {
savefile->WriteString( type->Name() );
size = type->Size();
savefile->WriteInt( size );
savefile->Write( data, size );
}
}
/*
================
idScriptObject::Restore
================
*/
void idScriptObject::Restore( idRestoreGame *savefile ) {
idStr typeName;
size_t size;
savefile->ReadString( typeName );
// Empty string signals uninitialized object
if ( typeName.Length() == 0 ) {
return;
}
if ( !SetType( typeName ) ) {
savefile->Error( "idScriptObject::Restore: failed to restore object of type '%s'.", typeName.c_str() );
}
savefile->ReadInt( (int &)size );
if ( size != type->Size() ) {
savefile->Error( "idScriptObject::Restore: size of object '%s' doesn't match size in save game.", typeName.c_str() );
}
savefile->Read( data, size );
}
/*
============
idScriptObject::SetType
Allocates an object and initializes memory.
============
*/
bool idScriptObject::SetType( const char *typeName ) {
size_t size;
idTypeDef *newtype;
// lookup the type
newtype = gameLocal.program.FindType( typeName );
// only allocate memory if the object type changes
if ( newtype != type ) {
Free();
if ( !newtype ) {
gameLocal.Warning( "idScriptObject::SetType: Unknown type '%s'", typeName );
return false;
}
if ( !newtype->Inherits( &type_object ) ) {
gameLocal.Warning( "idScriptObject::SetType: Can't create object of type '%s'. Must be an object type.", newtype->Name() );
return false;
}
// set the type
type = newtype;
// allocate the memory
size = type->Size();
data = ( byte * )Mem_Alloc( size );
}
// init object memory
ClearObject();
return true;
}
/*
============
idScriptObject::ClearObject
Resets the memory for the script object without changing its type.
============
*/
void idScriptObject::ClearObject( void ) {
size_t size;
if ( type != &type_object ) {
// init object memory
size = type->Size();
memset( data, 0, size );
}
}
/*
============
idScriptObject::HasObject
============
*/
bool idScriptObject::HasObject( void ) const {
return ( type != &type_object );
}
/*
============
idScriptObject::GetTypeDef
============
*/
idTypeDef *idScriptObject::GetTypeDef( void ) const {
return type;
}
/*
============
idScriptObject::GetTypeName
============
*/
const char *idScriptObject::GetTypeName( void ) const {
return type->Name();
}
/*
============
idScriptObject::GetConstructor
============
*/
const function_t *idScriptObject::GetConstructor( void ) const {
const function_t *func;
func = GetFunction( "init" );
return func;
}
/*
============
idScriptObject::GetDestructor
============
*/
const function_t *idScriptObject::GetDestructor( void ) const {
const function_t *func;
func = GetFunction( "destroy" );
return func;
}
/*
============
idScriptObject::GetFunction
============
*/
const function_t *idScriptObject::GetFunction( const char *name ) const {
const function_t *func;
if ( type == &type_object ) {
return NULL;
}
func = gameLocal.program.FindFunction( name, type );
return func;
}
/*
============
idScriptObject::GetVariable
============
*/
byte *idScriptObject::GetVariable( const char *name, etype_t etype ) const {
int i;
int pos;
const idTypeDef *t;
const idTypeDef *parm;
if ( type == &type_object ) {
return NULL;
}
t = type;
do {
if ( t->SuperClass() != &type_object ) {
pos = t->SuperClass()->Size();
} else {
pos = 0;
}
for( i = 0; i < t->NumParameters(); i++ ) {
parm = t->GetParmType( i );
if ( !strcmp( t->GetParmName( i ), name ) ) {
if ( etype != parm->FieldType()->Type() ) {
return NULL;
}
return &data[ pos ];
}
if ( parm->FieldType()->Inherits( &type_object ) ) {
pos += type_object.Size();
} else {
pos += parm->FieldType()->Size();
}
}
t = t->SuperClass();
} while( t && ( t != &type_object ) );
return NULL;
}
/***********************************************************************
idProgram
***********************************************************************/
/*
============
idProgram::AllocType
============
*/
idTypeDef *idProgram::AllocType( idTypeDef &type ) {
idTypeDef *newtype;
newtype = new idTypeDef( type );
types.Append( newtype );
return newtype;
}
/*
============
idProgram::AllocType
============
*/
idTypeDef *idProgram::AllocType( etype_t etype, idVarDef *edef, const char *ename, int esize, idTypeDef *aux ) {
idTypeDef *newtype;
newtype = new idTypeDef( etype, edef, ename, esize, aux );
types.Append( newtype );
return newtype;
}
/*
============
idProgram::GetType
Returns a preexisting complex type that matches the parm, or allocates
a new one and copies it out.
============
*/
idTypeDef *idProgram::GetType( idTypeDef &type, bool allocate ) {
int i;
//FIXME: linear search == slow
for( i = types.Num() - 1; i >= 0; i-- ) {
if ( types[ i ]->MatchesType( type ) && !strcmp( types[ i ]->Name(), type.Name() ) ) {
return types[ i ];
}
}
if ( !allocate ) {
return NULL;
}
// allocate a new one
return AllocType( type );
}
/*
============
idProgram::FindType
Returns a preexisting complex type that matches the name, or returns NULL if not found
============
*/
idTypeDef *idProgram::FindType( const char *name ) {
idTypeDef *check;
int i;
for( i = types.Num() - 1; i >= 0; i-- ) {
check = types[ i ];
if ( !strcmp( check->Name(), name ) ) {
return check;
}
}
return NULL;
}
/*
============
idProgram::GetDefList
============
*/
idVarDef *idProgram::GetDefList( const char *name ) const {
int i, hash;
hash = varDefNameHash.GenerateKey( name, true );
for ( i = varDefNameHash.First( hash ); i != -1; i = varDefNameHash.Next( i ) ) {
if ( idStr::Cmp( varDefNames[i]->Name(), name ) == 0 ) {
return varDefNames[i]->GetDefs();
}
}
return NULL;
}
/*
============
idProgram::AddDefToNameList
============
*/
void idProgram::AddDefToNameList( idVarDef *def, const char *name ) {
int i, hash;
hash = varDefNameHash.GenerateKey( name, true );
for ( i = varDefNameHash.First( hash ); i != -1; i = varDefNameHash.Next( i ) ) {
if ( idStr::Cmp( varDefNames[i]->Name(), name ) == 0 ) {
break;
}
}
if ( i == -1 ) {
i = varDefNames.Append( new idVarDefName( name ) );
varDefNameHash.Add( hash, i );
}
varDefNames[i]->AddDef( def );
}
/*
============
idProgram::AllocDef
============
*/
idVarDef *idProgram::AllocDef( idTypeDef *type, const char *name, idVarDef *scope, bool constant ) {
idVarDef *def;
idStr element;
idVarDef *def_x;
idVarDef *def_y;
idVarDef *def_z;
// allocate a new def
def = new idVarDef( type );
def->scope = scope;
def->numUsers = 1;
def->num = varDefs.Append( def );
// add the def to the list with defs with this name and set the name pointer
AddDefToNameList( def, name );
if ( ( type->Type() == ev_vector ) || ( ( type->Type() == ev_field ) && ( type->FieldType()->Type() == ev_vector ) ) ) {
//
// vector
//
if ( !strcmp( name, RESULT_STRING ) ) {
// <RESULT> vector defs don't need the _x, _y and _z components
assert( scope->Type() == ev_function );
def->value.stackOffset = scope->value.functionPtr->locals;
def->initialized = idVarDef::stackVariable;
scope->value.functionPtr->locals += type->Size();
} else if ( scope->TypeDef()->Inherits( &type_object ) ) {
idTypeDef newtype( ev_field, NULL, "float field", 0, &type_float );
idTypeDef *type = GetType( newtype, true );
// set the value to the variable's position in the object
def->value.ptrOffset = scope->TypeDef()->Size();
// make automatic defs for the vectors elements
// origin can be accessed as origin_x, origin_y, and origin_z
sprintf( element, "%s_x", def->Name() );
def_x = AllocDef( type, element, scope, constant );
sprintf( element, "%s_y", def->Name() );
def_y = AllocDef( type, element, scope, constant );
def_y->value.ptrOffset = def_x->value.ptrOffset + type_float.Size();
sprintf( element, "%s_z", def->Name() );
def_z = AllocDef( type, element, scope, constant );
def_z->value.ptrOffset = def_y->value.ptrOffset + type_float.Size();
} else {
// make automatic defs for the vectors elements
// origin can be accessed as origin_x, origin_y, and origin_z
sprintf( element, "%s_x", def->Name() );
def_x = AllocDef( &type_float, element, scope, constant );
sprintf( element, "%s_y", def->Name() );
def_y = AllocDef( &type_float, element, scope, constant );
sprintf( element, "%s_z", def->Name() );
def_z = AllocDef( &type_float, element, scope, constant );
// point the vector def to the x coordinate
def->value = def_x->value;
def->initialized = def_x->initialized;
}
} else if ( scope->TypeDef()->Inherits( &type_object ) ) {
//
// object variable
//
// set the value to the variable's position in the object
def->value.ptrOffset = scope->TypeDef()->Size();
} else if ( scope->Type() == ev_function ) {
//
// stack variable
//
// since we don't know how many local variables there are,
// we have to have them go backwards on the stack
def->value.stackOffset = scope->value.functionPtr->locals;
def->initialized = idVarDef::stackVariable;
if ( type->Inherits( &type_object ) ) {
// objects only have their entity number on the stack, not the entire object
scope->value.functionPtr->locals += type_object.Size();
} else {
scope->value.functionPtr->locals += type->Size();
}
} else {
//
// global variable
//
def->value.bytePtr = &variables[ numVariables ];
numVariables += def->TypeDef()->Size();
if ( numVariables > sizeof( variables ) ) {
throw idCompileError( va( "Exceeded global memory size (%d bytes)", sizeof( variables ) ) );
}
memset( def->value.bytePtr, 0, def->TypeDef()->Size() );
}
return def;
}
/*
============
idProgram::GetDef
If type is NULL, it will match any type
============
*/
idVarDef *idProgram::GetDef( const idTypeDef *type, const char *name, const idVarDef *scope ) const {
idVarDef *def;
idVarDef *bestDef;
int bestDepth;
int depth;
bestDepth = 0;
bestDef = NULL;
for( def = GetDefList( name ); def != NULL; def = def->Next() ) {
if ( def->scope->Type() == ev_namespace ) {
depth = def->DepthOfScope( scope );
if ( !depth ) {
// not in the same namespace
continue;
}
} else if ( def->scope != scope ) {
// in a different function
continue;
} else {
depth = 1;
}
if ( !bestDef || ( depth < bestDepth ) ) {
bestDepth = depth;
bestDef = def;
}
}
// see if the name is already in use for another type
if ( bestDef && type && ( bestDef->TypeDef() != type ) ) {
throw idCompileError( va( "Type mismatch on redeclaration of %s", name ) );
}
return bestDef;
}
/*
============
idProgram::FreeDef
============
*/
void idProgram::FreeDef( idVarDef *def, const idVarDef *scope ) {
idVarDef *e;
int i;
if ( def->Type() == ev_vector ) {
idStr name;
sprintf( name, "%s_x", def->Name() );
e = GetDef( NULL, name, scope );
if ( e ) {
FreeDef( e, scope );
}
sprintf( name, "%s_y", def->Name() );
e = GetDef( NULL, name, scope );
if ( e ) {
FreeDef( e, scope );
}
sprintf( name, "%s_z", def->Name() );
e = GetDef( NULL, name, scope );
if ( e ) {
FreeDef( e, scope );
}
}
varDefs.RemoveIndex( def->num );
for( i = def->num; i < varDefs.Num(); i++ ) {
varDefs[ i ]->num = i;
}
delete def;
}
/*
============
idProgram::FindFreeResultDef
============
*/
idVarDef *idProgram::FindFreeResultDef( idTypeDef *type, const char *name, idVarDef *scope, const idVarDef *a, const idVarDef *b ) {
idVarDef *def;
for( def = GetDefList( name ); def != NULL; def = def->Next() ) {
if ( def == a || def == b ) {
continue;
}
if ( def->TypeDef() != type ) {
continue;
}
if ( def->scope != scope ) {
continue;
}
if ( def->numUsers <= 1 ) {
continue;
}
return def;
}
return AllocDef( type, name, scope, false );
}
/*
================
idProgram::FindFunction
Searches for the specified function in the currently loaded script. A full namespace should be
specified if not in the global namespace.
Returns 0 if function not found.
Returns >0 if function found.
================
*/
function_t *idProgram::FindFunction( const char *name ) const {
int start;
int pos;
idVarDef *namespaceDef;
idVarDef *def;
assert( name );
idStr fullname = name;
start = 0;
namespaceDef = &def_namespace;
do {
pos = fullname.Find( "::", true, start );
if ( pos < 0 ) {
break;
}
idStr namespaceName = fullname.Mid( start, pos - start );
def = GetDef( NULL, namespaceName, namespaceDef );
if ( !def ) {
// couldn't find namespace
return NULL;
}
namespaceDef = def;
// skip past the ::
start = pos + 2;
} while( def->Type() == ev_namespace );
idStr funcName = fullname.Right( fullname.Length() - start );
def = GetDef( NULL, funcName, namespaceDef );
if ( !def ) {
// couldn't find function
return NULL;
}
if ( ( def->Type() == ev_function ) && ( def->value.functionPtr->eventdef == NULL ) ) {
return def->value.functionPtr;
}
// is not a function, or is an eventdef
return NULL;
}
/*
================
idProgram::FindFunction
Searches for the specified object function in the currently loaded script.
Returns 0 if function not found.
Returns >0 if function found.
================
*/
function_t *idProgram::FindFunction( const char *name, const idTypeDef *type ) const {
const idVarDef *tdef;
const idVarDef *def;
// look for the function
def = NULL;
for( tdef = type->def; tdef != &def_object; tdef = tdef->TypeDef()->SuperClass()->def ) {
def = GetDef( NULL, name, tdef );
if ( def ) {
return def->value.functionPtr;
}
}
return NULL;
}
/*
================
idProgram::AllocFunction
================
*/
function_t &idProgram::AllocFunction( idVarDef *def ) {
if ( functions.Num() >= functions.Max() ) {
throw idCompileError( va( "Exceeded maximum allowed number of functions (%d)", functions.Max() ) );
}
// fill in the dfunction
function_t &func = *functions.Alloc();
func.eventdef = NULL;
func.def = def;
func.type = def->TypeDef();
func.firstStatement = 0;
func.numStatements = 0;
func.parmTotal = 0;
func.locals = 0;
func.filenum = filenum;
func.parmSize.SetGranularity( 1 );
func.SetName( def->GlobalName() );
def->SetFunction( &func );
return func;
}
/*
================
idProgram::SetEntity
================
*/
void idProgram::SetEntity( const char *name, idEntity *ent ) {
idVarDef *def;
idStr defName( "$" );
defName += name;
def = GetDef( &type_entity, defName, &def_namespace );
if ( def && ( def->initialized != idVarDef::stackVariable ) ) {
// 0 is reserved for NULL entity
if ( !ent ) {
*def->value.entityNumberPtr = 0;
} else {
*def->value.entityNumberPtr = ent->entityNumber + 1;
}
}
}
/*
================
idProgram::AllocStatement
================
*/
statement_t *idProgram::AllocStatement( void ) {
if ( statements.Num() >= statements.Max() ) {
throw idCompileError( va( "Exceeded maximum allowed number of statements (%d)", statements.Max() ) );
}
return statements.Alloc();
}
/*
==============
idProgram::BeginCompilation
called before compiling a batch of files, clears the pr struct
==============
*/
void idProgram::BeginCompilation( void ) {
statement_t *statement;
FreeData();
try {
// make the first statement a return for a "NULL" function
statement = AllocStatement();
statement->linenumber = 0;
statement->file = 0;
statement->op = OP_RETURN;
statement->a = NULL;
statement->b = NULL;
statement->c = NULL;
// define NULL
//AllocDef( &type_void, "<NULL>", &def_namespace, true );
// define the return def
returnDef = AllocDef( &type_vector, "<RETURN>", &def_namespace, false );
// define the return def for strings
returnStringDef = AllocDef( &type_string, "<RETURN>", &def_namespace, false );
// define the sys object
sysDef = AllocDef( &type_void, "sys", &def_namespace, true );
}
catch( idCompileError &err ) {
gameLocal.Error( "%s", err.error );
}
}
/*
==============
idProgram::DisassembleStatement
==============
*/
void idProgram::DisassembleStatement( idFile *file, int instructionPointer ) const {
opcode_t *op;
const statement_t *statement;
statement = &statements[ instructionPointer ];
op = &idCompiler::opcodes[ statement->op ];
file->Printf( "%20s(%d):\t%6d: %15s\t", fileList[ statement->file ].c_str(), statement->linenumber, instructionPointer, op->opname );
if ( statement->a ) {
file->Printf( "\ta: " );
statement->a->PrintInfo( file, instructionPointer );
}
if ( statement->b ) {
file->Printf( "\tb: " );
statement->b->PrintInfo( file, instructionPointer );
}
if ( statement->c ) {
file->Printf( "\tc: " );
statement->c->PrintInfo( file, instructionPointer );
}
file->Printf( "\n" );
}
/*
==============
idProgram::Disassemble
==============
*/
void idProgram::Disassemble( void ) const {
int i;
int instructionPointer;
const function_t *func;
idFile *file;
file = fileSystem->OpenFileByMode( "script/disasm.txt", FS_WRITE );
for( i = 0; i < functions.Num(); i++ ) {
func = &functions[ i ];
if ( func->eventdef ) {
// skip eventdefs
continue;
}
file->Printf( "\nfunction %s() %d stack used, %d parms, %d locals {\n", func->Name(), func->locals, func->parmTotal, func->locals - func->parmTotal );
for( instructionPointer = 0; instructionPointer < func->numStatements; instructionPointer++ ) {
DisassembleStatement( file, func->firstStatement + instructionPointer );
}
file->Printf( "}\n" );
}
fileSystem->CloseFile( file );
}
/*
==============
idProgram::FinishCompilation
Called after all files are compiled to check for errors
==============
*/
void idProgram::FinishCompilation( void ) {
int i;
top_functions = functions.Num();
top_statements = statements.Num();
top_types = types.Num();
top_defs = varDefs.Num();
top_files = fileList.Num();
variableDefaults.Clear();
variableDefaults.SetNum( numVariables );
for( i = 0; i < numVariables; i++ ) {
variableDefaults[ i ] = variables[ i ];
}
}
/*
==============
idProgram::CompileStats
called after all files are compiled to report memory usage.
==============
*/
void idProgram::CompileStats( void ) {
int memused;
int memallocated;
int numdefs;
int stringspace;
int funcMem;
int i;
gameLocal.Printf( "---------- Compile stats ----------\n" );
gameLocal.DPrintf( "Files loaded:\n" );
stringspace = 0;
for( i = 0; i < fileList.Num(); i++ ) {
gameLocal.DPrintf( " %s\n", fileList[ i ].c_str() );
stringspace += fileList[ i ].Allocated();
}
stringspace += fileList.Size();
numdefs = varDefs.Num();
memused = varDefs.Num() * sizeof( idVarDef );
memused += types.Num() * sizeof( idTypeDef );
memused += stringspace;
for( i = 0; i < types.Num(); i++ ) {
memused += types[ i ]->Allocated();
}
funcMem = functions.MemoryUsed();
for( i = 0; i < functions.Num(); i++ ) {
funcMem += functions[ i ].Allocated();
}
memallocated = funcMem + memused + sizeof( idProgram );
memused += statements.MemoryUsed();
memused += functions.MemoryUsed(); // name and filename of functions are shared, so no need to include them
memused += sizeof( variables );
gameLocal.Printf( "\nMemory usage:\n" );
gameLocal.Printf( " Strings: %d, %d bytes\n", fileList.Num(), stringspace );
gameLocal.Printf( " Statements: %d, %d bytes\n", statements.Num(), statements.MemoryUsed() );
gameLocal.Printf( " Functions: %d, %d bytes\n", functions.Num(), funcMem );
gameLocal.Printf( " Variables: %d bytes\n", numVariables );
gameLocal.Printf( " Mem used: %d bytes\n", memused );
gameLocal.Printf( " Static data: %d bytes\n", sizeof( idProgram ) );
gameLocal.Printf( " Allocated: %d bytes\n", memallocated );
gameLocal.Printf( " Thread size: %d bytes\n\n", sizeof( idThread ) );
}
/*
================
idProgram::CompileText
================
*/
bool idProgram::CompileText( const char *source, const char *text, bool console ) {
idCompiler compiler;
int i;
idVarDef *def;
idStr ospath;
// use a full os path for GetFilenum since it calls OSPathToRelativePath to convert filenames from the parser
ospath = fileSystem->RelativePathToOSPath( source );
filenum = GetFilenum( ospath );
try {
compiler.CompileFile( text, filename, console );
// check to make sure all functions prototyped have code
for( i = 0; i < varDefs.Num(); i++ ) {
def = varDefs[ i ];
if ( ( def->Type() == ev_function ) && ( ( def->scope->Type() == ev_namespace ) || def->scope->TypeDef()->Inherits( &type_object ) ) ) {
if ( !def->value.functionPtr->eventdef && !def->value.functionPtr->firstStatement ) {
throw idCompileError( va( "function %s was not defined\n", def->GlobalName() ) );
}
}
}
}
catch( idCompileError &err ) {
if ( console ) {
gameLocal.Printf( "%s\n", err.error );
return false;
} else {
gameLocal.Error( "%s\n", err.error );
}
};
if ( !console ) {
CompileStats();
}
return true;
}
/*
================
idProgram::CompileFunction
================
*/
const function_t *idProgram::CompileFunction( const char *functionName, const char *text ) {
bool result;
result = CompileText( functionName, text, false );
if ( g_disasm.GetBool() ) {
Disassemble();
}
if ( !result ) {
gameLocal.Error( "Compile failed." );
}
return FindFunction( functionName );
}
/*
================
idProgram::CompileFile
================
*/
void idProgram::CompileFile( const char *filename ) {
char *src;
bool result;
if ( fileSystem->ReadFile( filename, ( void ** )&src, NULL ) < 0 ) {
gameLocal.Error( "Couldn't load %s\n", filename );
}
result = CompileText( filename, src, false );
fileSystem->FreeFile( src );
if ( g_disasm.GetBool() ) {
Disassemble();
}
if ( !result ) {
gameLocal.Error( "Compile failed in file %s.", filename );
}
}
/*
================
idProgram::FreeData
================
*/
void idProgram::FreeData( void ) {
int i;
// free the defs
varDefs.DeleteContents( true );
varDefNames.DeleteContents( true );
varDefNameHash.Free();
returnDef = NULL;
returnStringDef = NULL;
sysDef = NULL;
// free any special types we've created
types.DeleteContents( true );
filenum = 0;
numVariables = 0;
memset( variables, 0, sizeof( variables ) );
// clear all the strings in the functions so that it doesn't look like we're leaking memory.
for( i = 0; i < functions.Num(); i++ ) {
functions[ i ].Clear();
}
filename.Clear();
fileList.Clear();
statements.Clear();
functions.Clear();
top_functions = 0;
top_statements = 0;
top_types = 0;
top_defs = 0;
top_files = 0;
filename = "";
}
/*
================
idProgram::Startup
================
*/
void idProgram::Startup( const char *defaultScript ) {
gameLocal.Printf( "Initializing scripts\n" );
// make sure all data is freed up
idThread::Restart();
// get ready for loading scripts
BeginCompilation();
// load the default script
if ( defaultScript && *defaultScript ) {
CompileFile( defaultScript );
}
FinishCompilation();
}
/*
================
idProgram::Save
================
*/
void idProgram::Save( idSaveGame *savefile ) const {
int i;
int currentFileNum = top_files;
savefile->WriteInt( (fileList.Num() - currentFileNum) );
while ( currentFileNum < fileList.Num() ) {
savefile->WriteString( fileList[ currentFileNum ] );
currentFileNum++;
}
for ( i = 0; i < variableDefaults.Num(); i++ ) {
if ( variables[i] != variableDefaults[i] ) {
savefile->WriteInt( i );
savefile->WriteByte( variables[i] );
}
}
// Mark the end of the diff with default variables with -1
savefile->WriteInt( -1 );
savefile->WriteInt( numVariables );
for ( i = variableDefaults.Num(); i < numVariables; i++ ) {
savefile->WriteByte( variables[i] );
}
int checksum = CalculateChecksum();
savefile->WriteInt( checksum );
}
/*
================
idProgram::Restore
================
*/
bool idProgram::Restore( idRestoreGame *savefile ) {
int i, num, index;
bool result = true;
idStr scriptname;
savefile->ReadInt( num );
for ( i = 0; i < num; i++ ) {
savefile->ReadString( scriptname );
CompileFile( scriptname );
}
savefile->ReadInt( index );
while( index >= 0 ) {
savefile->ReadByte( variables[index] );
savefile->ReadInt( index );
}
savefile->ReadInt( num );
for ( i = variableDefaults.Num(); i < num; i++ ) {
savefile->ReadByte( variables[i] );
}
int saved_checksum, checksum;
savefile->ReadInt( saved_checksum );
checksum = CalculateChecksum();
if ( saved_checksum != checksum ) {
result = false;
}
return result;
}
/*
================
idProgram::CalculateChecksum
================
*/
int idProgram::CalculateChecksum( void ) const {
int i, result;
typedef struct {
unsigned short op;
int a;
int b;
int c;
unsigned short linenumber;
unsigned short file;
} statementBlock_t;
statementBlock_t *statementList = new statementBlock_t[ statements.Num() ];
memset( statementList, 0, ( sizeof(statementBlock_t) * statements.Num() ) );
// Copy info into new list, using the variable numbers instead of a pointer to the variable
for( i = 0; i < statements.Num(); i++ ) {
statementList[i].op = statements[i].op;
if ( statements[i].a ) {
statementList[i].a = statements[i].a->num;
} else {
statementList[i].a = -1;
}
if ( statements[i].b ) {
statementList[i].b = statements[i].b->num;
} else {
statementList[i].b = -1;
}
if ( statements[i].c ) {
statementList[i].c = statements[i].c->num;
} else {
statementList[i].c = -1;
}
statementList[i].linenumber = statements[i].linenumber;
statementList[i].file = statements[i].file;
}
result = MD4_BlockChecksum( statementList, ( sizeof(statementBlock_t) * statements.Num() ) );
delete [] statementList;
return result;
}
/*
==============
idProgram::Restart
Restores all variables to their initial value
==============
*/
void idProgram::Restart( void ) {
int i;
idThread::Restart();
//
// since there may have been a script loaded by the map or the user may
// have typed "script" from the console, free up any types and vardefs that
// have been allocated after the initial startup
//
for( i = top_types; i < types.Num(); i++ ) {
delete types[ i ];
}
types.SetNum( top_types, false );
for( i = top_defs; i < varDefs.Num(); i++ ) {
delete varDefs[ i ];
}
varDefs.SetNum( top_defs, false );
for( i = top_functions; i < functions.Num(); i++ ) {
functions[ i ].Clear();
}
functions.SetNum( top_functions );
statements.SetNum( top_statements );
fileList.SetNum( top_files, false );
filename.Clear();
// reset the variables to their default values
numVariables = variableDefaults.Num();
for( i = 0; i < numVariables; i++ ) {
variables[ i ] = variableDefaults[ i ];
}
}
/*
================
idProgram::GetFilenum
================
*/
int idProgram::GetFilenum( const char *name ) {
if ( filename == name ) {
return filenum;
}
idStr strippedName;
strippedName = fileSystem->OSPathToRelativePath( name );
if ( !strippedName.Length() ) {
// not off the base path so just use the full path
filenum = fileList.AddUnique( name );
} else {
filenum = fileList.AddUnique( strippedName );
}
// save the unstripped name so that we don't have to strip the incoming name every time we call GetFilenum
filename = name;
return filenum;
}
/*
================
idProgram::idProgram
================
*/
idProgram::idProgram() {
FreeData();
}
/*
================
idProgram::~idProgram
================
*/
idProgram::~idProgram() {
FreeData();
}
/*
================
idProgram::ReturnEntity
================
*/
void idProgram::ReturnEntity( idEntity *ent ) {
if ( ent ) {
*returnDef->value.entityNumberPtr = ent->entityNumber + 1;
} else {
*returnDef->value.entityNumberPtr = 0;
}
}
Reference in a new issue Copy permalink