Commit graph

22 commits

Author SHA1 Message Date
Christoph Oelckers
d8c689d874 - 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 18:53:10 +02:00
Christoph Oelckers
3b19887637 - 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.
2016-10-11 00:56:47 +02:00
Christoph Oelckers
e84d6a06d8 - 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.
2016-10-10 01:18:47 +02:00
Christoph Oelckers
4ecd7dd13a - a bit of cleanup. 2016-10-09 22:01:23 +02:00
Christoph Oelckers
ad43f2bc7e - 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 21:54:23 +02:00
Christoph Oelckers
49f18c0a19 - 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 09:09:17 +02:00
Christoph Oelckers
efcd5a8683 - forgot to delete these lines. 2016-10-08 22:18:51 +02:00
Christoph Oelckers
08f313d011 - 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 22:16:10 +02:00
Christoph Oelckers
5bb6bb31ca - added ProcessStruct, analogous to ProcessClass.
Now everything should be in place to resolve all constants - inside and outside classes or structs.
2016-10-08 15:39:54 +02:00
Christoph Oelckers
d139ee9f68 - 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 15:27:20 +02:00
Christoph Oelckers
82ac2081b6 - 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 13:34:37 +02:00
Christoph Oelckers
b71e8d09ed - 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 11:54:33 +02:00
Christoph Oelckers
fff428c71d - added copyright headers to scripting files. 2016-10-08 08:35:16 +02:00
Randy Heit
288f01a0c2 GCC fixes for zcc_compile.(cpp|h) 2016-03-20 11:34:41 -05:00
Randy Heit
aaae9f2e05 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.
2016-03-18 19:34:32 -05:00
Randy Heit
b66de4116d 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.
2013-11-01 21:28:00 -05:00
Randy Heit
16fc9be411 Interpret function calls to type refs as type casts 2013-10-30 20:53:02 -05:00
Randy Heit
39d7fa0605 Allow access to the numeric properties.
- Identifiers can now evaluate to type references.
- The dot operator can now find symbols in type references.
2013-10-29 22:06:14 -05:00
Randy Heit
03c4244fd8 Accept only one identifier for class names. 2013-10-29 22:05:09 -05:00
Randy Heit
6384613487 Allow using constants in other constants before their definitions.
- Something like this is now valid:
    const foo = bar + 10;
    const bar = 1000;
2013-10-25 22:30:25 -05:00
Randy Heit
76d2e8cfc4 Set node type when nil-ing an id node.
- Nodes can't stay as type AST_ExprID if they don't also have the
  operation PEX_ID.
2013-10-25 22:30:25 -05:00
Randy Heit
850055a766 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.
2013-10-25 22:30:24 -05:00