Initial import from TransGaming
git-svn-id: https://angleproject.googlecode.com/svn/trunk@2 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/Compiler/ParseHelper.h b/Compiler/ParseHelper.h
new file mode 100644
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--- /dev/null
+++ b/Compiler/ParseHelper.h
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+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+#ifndef _PARSER_HELPER_INCLUDED_
+#define _PARSER_HELPER_INCLUDED_
+
+#include "ShHandle.h"
+#include "SymbolTable.h"
+#include "localintermediate.h"
+
+struct TMatrixFields {
+ bool wholeRow;
+ bool wholeCol;
+ int row;
+ int col;
+};
+
+typedef enum {
+ EBhRequire,
+ EBhEnable,
+ EBhWarn,
+ EBhDisable
+} TBehavior;
+
+struct TPragma {
+ TPragma(bool o, bool d) : optimize(o), debug(d) { }
+ bool optimize;
+ bool debug;
+ TPragmaTable pragmaTable;
+};
+
+//
+// The following are extra variables needed during parsing, grouped together so
+// they can be passed to the parser without needing a global.
+//
+struct TParseContext {
+ TParseContext(TSymbolTable& symt, TIntermediate& interm, EShLanguage L, TInfoSink& is) :
+ intermediate(interm), symbolTable(symt), infoSink(is), language(L), treeRoot(0),
+ recoveredFromError(false), numErrors(0), lexAfterType(false), loopNestingLevel(0),
+ inTypeParen(false), contextPragma(true, false) { }
+ TIntermediate& intermediate; // to hold and build a parse tree
+ TSymbolTable& symbolTable; // symbol table that goes with the language currently being parsed
+ TInfoSink& infoSink;
+ EShLanguage language; // vertex or fragment language (future: pack or unpack)
+ TIntermNode* treeRoot; // root of parse tree being created
+ bool recoveredFromError; // true if a parse error has occurred, but we continue to parse
+ int numErrors;
+ bool lexAfterType; // true if we've recognized a type, so can only be looking for an identifier
+ int loopNestingLevel; // 0 if outside all loops
+ bool inTypeParen; // true if in parentheses, looking only for an identifier
+ const TType* currentFunctionType; // the return type of the function that's currently being parsed
+ bool functionReturnsValue; // true if a non-void function has a return
+ TMap<TString, TBehavior> extensionBehavior;
+ void initializeExtensionBehavior();
+
+ void C_DECL error(TSourceLoc, const char *szReason, const char *szToken,
+ const char *szExtraInfoFormat, ...);
+ bool reservedErrorCheck(int line, const TString& identifier);
+ void recover();
+
+ bool parseVectorFields(const TString&, int vecSize, TVectorFields&, int line);
+ bool parseMatrixFields(const TString&, int matSize, TMatrixFields&, int line);
+ void assignError(int line, const char* op, TString left, TString right);
+ void unaryOpError(int line, const char* op, TString operand);
+ void binaryOpError(int line, const char* op, TString left, TString right);
+ bool lValueErrorCheck(int line, const char* op, TIntermTyped*);
+ bool constErrorCheck(TIntermTyped* node);
+ bool integerErrorCheck(TIntermTyped* node, const char* token);
+ bool globalErrorCheck(int line, bool global, const char* token);
+ bool constructorErrorCheck(int line, TIntermNode*, TFunction&, TOperator, TType*);
+ bool arraySizeErrorCheck(int line, TIntermTyped* expr, int& size);
+ bool arrayQualifierErrorCheck(int line, TPublicType type);
+ bool arrayTypeErrorCheck(int line, TPublicType type);
+ bool arrayErrorCheck(int line, TString& identifier, TPublicType type, TVariable*& variable);
+ bool voidErrorCheck(int, const TString&, const TPublicType&);
+ bool boolErrorCheck(int, const TIntermTyped*);
+ bool boolErrorCheck(int, const TPublicType&);
+ bool samplerErrorCheck(int line, const TPublicType& pType, const char* reason);
+ bool structQualifierErrorCheck(int line, const TPublicType& pType);
+ bool parameterSamplerErrorCheck(int line, TQualifier qualifier, const TType& type);
+ bool containsSampler(TType& type);
+ bool nonInitConstErrorCheck(int line, TString& identifier, TPublicType& type);
+ bool nonInitErrorCheck(int line, TString& identifier, TPublicType& type);
+ bool paramErrorCheck(int line, TQualifier qualifier, TQualifier paramQualifier, TType* type);
+ bool extensionErrorCheck(int line, const char*);
+ const TFunction* findFunction(int line, TFunction* pfnCall, bool *builtIn = 0);
+ bool executeInitializer(TSourceLoc line, TString& identifier, TPublicType& pType,
+ TIntermTyped* initializer, TIntermNode*& intermNode, TVariable* variable = 0);
+ bool areAllChildConst(TIntermAggregate* aggrNode);
+ TIntermTyped* addConstructor(TIntermNode*, const TType*, TOperator, TFunction*, TSourceLoc);
+ TIntermTyped* foldConstConstructor(TIntermAggregate* aggrNode, const TType& type);
+ TIntermTyped* constructStruct(TIntermNode*, TType*, int, TSourceLoc, bool subset);
+ TIntermTyped* constructBuiltIn(const TType*, TOperator, TIntermNode*, TSourceLoc, bool subset);
+ TIntermTyped* addConstVectorNode(TVectorFields&, TIntermTyped*, TSourceLoc);
+ TIntermTyped* addConstMatrixNode(int , TIntermTyped*, TSourceLoc);
+ TIntermTyped* addConstArrayNode(int index, TIntermTyped* node, TSourceLoc line);
+ TIntermTyped* addConstStruct(TString& , TIntermTyped*, TSourceLoc);
+ bool arraySetMaxSize(TIntermSymbol*, TType*, int, bool, TSourceLoc);
+ struct TPragma contextPragma;
+ TString HashErrMsg;
+ bool AfterEOF;
+};
+
+int PaParseStrings(char* argv[], int strLen[], int argc, TParseContext&);
+void PaReservedWord();
+int PaIdentOrType(TString& id, TParseContext&, TSymbol*&);
+int PaParseComment(int &lineno, TParseContext&);
+void setInitialState();
+
+typedef TParseContext* TParseContextPointer;
+extern TParseContextPointer& GetGlobalParseContext();
+#define GlobalParseContext GetGlobalParseContext()
+
+typedef struct TThreadParseContextRec
+{
+ TParseContext *lpGlobalParseContext;
+} TThreadParseContext;
+
+#endif // _PARSER_HELPER_INCLUDED_