2ecdd14288
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23309 e7fa87d3-cd2b-0410-9028-fcbf551c1848
223 lines
11 KiB
C++
223 lines
11 KiB
C++
//
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//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
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//Copyright (C) 2012-2013 LunarG, Inc.
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//
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//All rights reserved.
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//
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//Redistribution and use in source and binary forms, with or without
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//modification, are permitted provided that the following conditions
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//are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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//POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _PARSER_HELPER_INCLUDED_
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#define _PARSER_HELPER_INCLUDED_
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#include "Versions.h"
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#include "../Include/ShHandle.h"
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#include "SymbolTable.h"
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#include "localintermediate.h"
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namespace glslang {
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typedef enum {
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EBhRequire,
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EBhEnable,
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EBhWarn,
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EBhDisable
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} TBehavior;
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struct TPragma {
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TPragma(bool o, bool d) : optimize(o), debug(d) { }
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bool optimize;
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bool debug;
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TPragmaTable pragmaTable;
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};
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class TScanContext;
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class TPpContext;
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//
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// The following are extra variables needed during parsing, grouped together so
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// they can be passed to the parser without needing a global.
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//
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class TParseContext {
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public:
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TParseContext(TSymbolTable&, TIntermediate&, bool parsingBuiltins, int version, EProfile, EShLanguage, TInfoSink&,
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bool forwardCompatible = false, EShMessages messages = EShMsgDefault);
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public:
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bool parseShaderStrings(TPpContext&, char* strings[], int strLen[], int numStrings);
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void initializeExtensionBehavior();
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void parserError(const char *s); // for bison's yyerror
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void C_DECL error(TSourceLoc, const char *szReason, const char *szToken,
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const char *szExtraInfoFormat, ...);
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void C_DECL warn(TSourceLoc, const char *szReason, const char *szToken,
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const char *szExtraInfoFormat, ...);
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bool reservedErrorCheck(TSourceLoc, const TString& identifier);
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void updateExtensionBehavior(const char* extName, const char* behavior);
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void handlePragma(const char **tokens, int numTokens);
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TIntermTyped* handleVariable(TSourceLoc, TSymbol* symbol, TString* string);
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TIntermTyped* handleBracketDereference(TSourceLoc, TIntermTyped* base, TIntermTyped* index);
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TIntermTyped* handleDotDereference(TSourceLoc, TIntermTyped* base, TString& field);
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TIntermAggregate* handleFunctionPrototype(TSourceLoc, TFunction&);
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TIntermTyped* handleFunctionCall(TSourceLoc, TFunction*, TIntermNode*, TIntermAggregate*);
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TFunction* handleConstructorCall(TSourceLoc, TPublicType&);
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bool parseVectorFields(TSourceLoc, const TString&, int vecSize, TVectorFields&);
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void assignError(TSourceLoc, const char* op, TString left, TString right);
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void unaryOpError(TSourceLoc, const char* op, TString operand);
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void binaryOpError(TSourceLoc, const char* op, TString left, TString right);
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void variableCheck(TIntermTyped*& nodePtr);
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bool lValueErrorCheck(TSourceLoc, const char* op, TIntermTyped*);
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void constCheck(TIntermTyped* node, const char* token);
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void integerCheck(TIntermTyped* node, const char* token);
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void globalCheck(TSourceLoc, bool global, const char* token);
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bool constructorError(TSourceLoc, TIntermNode*, TFunction&, TOperator, TType&);
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void arraySizeCheck(TSourceLoc, TIntermTyped* expr, int& size);
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bool arrayQualifierError(TSourceLoc, const TQualifier&);
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void arraySizeRequiredCheck(TSourceLoc, int size);
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void arrayDimError(TSourceLoc);
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void arrayDimCheck(TSourceLoc, TArraySizes* sizes1, TArraySizes* sizes2);
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void arrayDimCheck(TSourceLoc, const TType*, TArraySizes*);
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bool voidErrorCheck(TSourceLoc, const TString&, TBasicType);
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void boolCheck(TSourceLoc, const TIntermTyped*);
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void boolCheck(TSourceLoc, const TPublicType&);
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bool samplerErrorCheck(TSourceLoc, const TPublicType& pType, const char* reason);
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void globalQualifierFix(TSourceLoc, TQualifier&, const TPublicType&);
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bool structQualifierErrorCheck(TSourceLoc, const TPublicType& pType);
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void mergeQualifiers(TSourceLoc, TQualifier& dst, const TQualifier& src, bool force);
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void setDefaultPrecision(TSourceLoc, TPublicType&, TPrecisionQualifier);
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int computeSamplerTypeIndex(TSampler&);
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TPrecisionQualifier getDefaultPrecision(TPublicType&);
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void precisionQualifierCheck(TSourceLoc, TPublicType&);
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void parameterSamplerCheck(TSourceLoc, TStorageQualifier qualifier, const TType& type);
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bool containsSampler(const TType& type);
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TVariable* redeclareBuiltin(TSourceLoc, const TString&, const TType&, bool& newDeclaration);
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void paramCheck(TSourceLoc, TStorageQualifier qualifier, TType* type);
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void nestedBlockCheck(TSourceLoc);
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void nestedStructCheck(TSourceLoc);
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void setLayoutQualifier(TSourceLoc, TPublicType&, TString&);
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void setLayoutQualifier(TSourceLoc, TPublicType&, TString&, int);
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void mergeLayoutQualifiers(TSourceLoc, TQualifier& dest, const TQualifier& src);
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const TFunction* findFunction(TSourceLoc, TFunction* pfnCall, bool *builtIn = 0);
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TIntermNode* declareVariable(TSourceLoc, TString& identifier, TPublicType&, TArraySizes* typeArray = 0, TIntermTyped* initializer = 0);
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TIntermTyped* addConstructor(TIntermNode*, const TType&, TOperator, TFunction*, TSourceLoc);
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TIntermTyped* constructStruct(TIntermNode*, const TType&, int, TSourceLoc);
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TIntermTyped* constructBuiltIn(const TType&, TOperator, TIntermNode*, TSourceLoc, bool subset);
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void addBlock(TSourceLoc, TTypeList& typeList, const TString* instanceName = 0, TArraySizes* arraySizes = 0);
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void addQualifierToExisting(TSourceLoc, TQualifier, const TString& identifier);
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void addQualifierToExisting(TSourceLoc, TQualifier, TIdentifierList&);
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void updateQualifierDefaults(TQualifier);
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void updateQualifierDefaults(TSourceLoc, TQualifier);
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void updateTypedDefaults(TSourceLoc, TQualifier, const TString* id);
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void wrapupSwitchSubsequence(TIntermAggregate* statements, TIntermNode* branchNode);
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TIntermNode* addSwitch(TSourceLoc, TIntermTyped* expression, TIntermAggregate* body);
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TIntermTyped* addConstVectorNode(TVectorFields&, TIntermTyped*, TSourceLoc);
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TIntermTyped* addConstMatrixNode(int , TIntermTyped*, TSourceLoc);
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TIntermTyped* addConstArrayNode(int index, TIntermTyped* node, TSourceLoc);
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TIntermTyped* addConstStruct(TString& , TIntermTyped*, TSourceLoc);
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bool arraySetMaxSize(TSourceLoc, TIntermSymbol*, int);
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void requireProfile(TSourceLoc, EProfileMask profileMask, const char *featureDesc);
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void requireStage(TSourceLoc, EShLanguageMask languageMask, const char *featureDesc);
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void profileRequires(TSourceLoc, EProfile callingProfile, int minVersion, int numExtensions, const char* extensions[], const char *featureDesc);
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void profileRequires(TSourceLoc, EProfile callingProfile, int minVersion, const char* extension, const char *featureDesc);
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void checkDeprecated(TSourceLoc, EProfile callingProfile, int depVersion, const char *featureDesc);
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void requireNotRemoved(TSourceLoc, EProfile callingProfile, int removedVersion, const char *featureDesc);
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void fullIntegerCheck(TSourceLoc, const char* op);
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void doubleCheck(TSourceLoc, const char* op);
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void setScanContext(TScanContext* c) { scanContext = c; }
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TScanContext* getScanContext() const { return scanContext; }
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void setPpContext(TPpContext* c) { ppContext = c; }
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TPpContext* getPpContext() const { return ppContext; }
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void addError() { ++numErrors; }
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int getNumErrors() const { return numErrors; }
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protected:
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const char* getPreamble();
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TBehavior getExtensionBehavior(const char* behavior);
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void nonInitConstCheck(TSourceLoc, TString& identifier, TType& type);
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TVariable* declareNonArray(TSourceLoc, TString& identifier, TType&, bool& newDeclaration);
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void declareArray(TSourceLoc, TString& identifier, const TType&, TVariable*&, bool& newDeclaration);
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TIntermNode* executeInitializer(TSourceLoc, TString& identifier, TType&, TIntermTyped* initializer, TVariable* variable);
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public:
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//
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// Generally, bison productions, the scanner, and the PP need read/write access to these; just give them direct access
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//
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TIntermediate& intermediate; // helper for making and hooking up pieces of the parse tree
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TSymbolTable& symbolTable; // symbol table that goes with the current language, version, and profile
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TInfoSink& infoSink;
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// compilation mode
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EShLanguage language; // vertex or fragment language
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int version; // version, updated by #version in the shader
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EProfile profile; // the declared profile in the shader (core by default)
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bool forwardCompatible; // true if errors are to be given for use of deprecated features
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EShMessages messages; // errors/warnings
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// Current state of parsing
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struct TPragma contextPragma;
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int loopNestingLevel; // 0 if outside all loops
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int structNestingLevel; // 0 if outside blocks and structures
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TList<TIntermSequence*> switchSequenceStack; // case, node, case, case, node, ...; ensure only one node between cases; stack of them for nesting
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const TType* currentFunctionType; // the return type of the function that's currently being parsed
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bool functionReturnsValue; // true if a non-void function has a return
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const TString* blockName;
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TQualifier currentBlockDefaults;
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TIntermAggregate *linkage; // aggregate node of objects the linker may need, if not referenced by the rest of the AST
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TPrecisionQualifier defaultPrecision[EbtNumTypes];
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TSourceLoc currentLoc;
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bool tokensBeforeEOF;
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protected:
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TScanContext* scanContext;
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TPpContext* ppContext;
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int numErrors; // number of compile-time errors encountered
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bool parsingBuiltins; // true if parsing built-in symbols/functions
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TMap<TString, TBehavior> extensionBehavior; // for each extension string, what it's current enablement is
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static const int maxSamplerIndex = EsdNumDims * (EbtNumTypes * (2 * 2)); // see computeSamplerTypeIndex()
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TPrecisionQualifier defaultSamplerPrecision[maxSamplerIndex];
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bool afterEOF;
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TQualifier globalUniformDefaults;
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TQualifier globalInputDefaults;
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TQualifier globalOutputDefaults;
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TString currentCaller;
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// TODO: desktop functionality: track use of gl_FragDepth before redeclaration
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};
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} // end namespace glslang
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#endif // _PARSER_HELPER_INCLUDED_
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