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228 lines
13 KiB
C++
Executable File
228 lines
13 KiB
C++
Executable File
//
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//Copyright (C) 2016 Google, 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 HLSL_PARSE_INCLUDED_
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#define HLSL_PARSE_INCLUDED_
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#include "../glslang/MachineIndependent/parseVersions.h"
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#include "../glslang/MachineIndependent/ParseHelper.h"
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namespace glslang {
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class HlslParseContext : public TParseContextBase {
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public:
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HlslParseContext(TSymbolTable&, TIntermediate&, bool parsingBuiltins,
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int version, EProfile, int spv, int vulkan, EShLanguage, TInfoSink&,
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bool forwardCompatible = false, EShMessages messages = EShMsgDefault);
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virtual ~HlslParseContext();
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void setLimits(const TBuiltInResource&);
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bool parseShaderStrings(TPpContext&, TInputScanner& input, bool versionWillBeError = false);
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void getPreamble(std::string&);
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void C_DECL error(const TSourceLoc&, const char* szReason, const char* szToken,
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const char* szExtraInfoFormat, ...);
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void C_DECL warn(const TSourceLoc&, const char* szReason, const char* szToken,
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const char* szExtraInfoFormat, ...);
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void C_DECL ppError(const TSourceLoc&, const char* szReason, const char* szToken,
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const char* szExtraInfoFormat, ...);
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void C_DECL ppWarn(const TSourceLoc&, const char* szReason, const char* szToken,
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const char* szExtraInfoFormat, ...);
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void reservedPpErrorCheck(const TSourceLoc&, const char* name, const char* op) { }
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bool lineContinuationCheck(const TSourceLoc&, bool endOfComment) { return true; }
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bool lineDirectiveShouldSetNextLine() const { return true; }
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bool builtInName(const TString&);
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void handlePragma(const TSourceLoc&, const TVector<TString>&);
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TIntermTyped* handleVariable(const TSourceLoc&, TSymbol* symbol, const TString* string);
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TIntermTyped* handleBracketDereference(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index);
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void checkIndex(const TSourceLoc&, const TType&, int& index);
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void makeEditable(TSymbol*&);
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TVariable* getEditableVariable(const char* name);
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bool isIoResizeArray(const TType&) const;
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void fixIoArraySize(const TSourceLoc&, TType&);
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void handleIoResizeArrayAccess(const TSourceLoc&, TIntermTyped* base);
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void checkIoArraysConsistency(const TSourceLoc&, bool tailOnly = false);
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int getIoArrayImplicitSize() const;
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void checkIoArrayConsistency(const TSourceLoc&, int requiredSize, const char* feature, TType&, const TString&);
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TIntermTyped* handleBinaryMath(const TSourceLoc&, const char* str, TOperator op, TIntermTyped* left, TIntermTyped* right);
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TIntermTyped* handleUnaryMath(const TSourceLoc&, const char* str, TOperator op, TIntermTyped* childNode);
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TIntermTyped* handleDotDereference(const TSourceLoc&, TIntermTyped* base, const TString& field);
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TFunction* handleFunctionDeclarator(const TSourceLoc&, TFunction& function, bool prototype);
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TIntermAggregate* handleFunctionDefinition(const TSourceLoc&, TFunction&);
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void handleFunctionArgument(TFunction*, TIntermTyped*& arguments, TIntermTyped* newArg);
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TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermNode*);
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TIntermTyped* handleLengthMethod(const TSourceLoc&, TFunction*, TIntermNode*);
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void addInputArgumentConversions(const TFunction&, TIntermNode*&) const;
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TIntermTyped* addOutputArgumentConversions(const TFunction&, TIntermAggregate&) const;
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void builtInOpCheck(const TSourceLoc&, const TFunction&, TIntermOperator&);
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TFunction* handleConstructorCall(const TSourceLoc&, const TType&);
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bool parseVectorFields(const TSourceLoc&, const TString&, int vecSize, TVectorFields&);
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void assignError(const TSourceLoc&, const char* op, TString left, TString right);
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void unaryOpError(const TSourceLoc&, const char* op, TString operand);
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void binaryOpError(const TSourceLoc&, const char* op, TString left, TString right);
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void variableCheck(TIntermTyped*& nodePtr);
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void constantValueCheck(TIntermTyped* node, const char* token);
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void integerCheck(const TIntermTyped* node, const char* token);
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void globalCheck(const TSourceLoc&, const char* token);
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bool constructorError(const TSourceLoc&, TIntermNode*, TFunction&, TOperator, TType&);
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bool constructorTextureSamplerError(const TSourceLoc&, const TFunction&);
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void arraySizeCheck(const TSourceLoc&, TIntermTyped* expr, TArraySize&);
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void arraySizeRequiredCheck(const TSourceLoc&, const TArraySizes&);
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void structArrayCheck(const TSourceLoc&, const TType& structure);
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void arrayDimMerge(TType& type, const TArraySizes* sizes);
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bool voidErrorCheck(const TSourceLoc&, const TString&, TBasicType);
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void boolCheck(const TSourceLoc&, const TIntermTyped*);
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void globalQualifierFix(const TSourceLoc&, TQualifier&);
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bool structQualifierErrorCheck(const TSourceLoc&, const TPublicType& pType);
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void mergeQualifiers(const TSourceLoc&, TQualifier& dst, const TQualifier& src, bool force);
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int computeSamplerTypeIndex(TSampler&);
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TSymbol* redeclareBuiltinVariable(const TSourceLoc&, const TString&, const TQualifier&, const TShaderQualifiers&, bool& newDeclaration);
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void redeclareBuiltinBlock(const TSourceLoc&, TTypeList& typeList, const TString& blockName, const TString* instanceName, TArraySizes* arraySizes);
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void paramCheckFix(const TSourceLoc&, const TStorageQualifier&, TType& type);
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void paramCheckFix(const TSourceLoc&, const TQualifier&, TType& type);
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void specializationCheck(const TSourceLoc&, const TType&, const char* op);
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void setLayoutQualifier(const TSourceLoc&, TPublicType&, TString&);
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void setLayoutQualifier(const TSourceLoc&, TPublicType&, TString&, const TIntermTyped*);
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void mergeObjectLayoutQualifiers(TQualifier& dest, const TQualifier& src, bool inheritOnly);
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void checkNoShaderLayouts(const TSourceLoc&, const TShaderQualifiers&);
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const TFunction* findFunction(const TSourceLoc& loc, const TFunction& call, bool& builtIn);
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TIntermNode* declareVariable(const TSourceLoc&, TString& identifier, const TType&, TArraySizes* typeArray = 0, TIntermTyped* initializer = 0);
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TIntermTyped* addConstructor(const TSourceLoc&, TIntermNode*, const TType&, TOperator);
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TIntermTyped* constructAggregate(TIntermNode*, const TType&, int, const TSourceLoc&);
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TIntermTyped* constructBuiltIn(const TType&, TOperator, TIntermTyped*, const TSourceLoc&, bool subset);
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void declareBlock(const TSourceLoc&, TTypeList& typeList, const TString* instanceName = 0, TArraySizes* arraySizes = 0);
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void fixBlockLocations(const TSourceLoc&, TQualifier&, TTypeList&, bool memberWithLocation, bool memberWithoutLocation);
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void fixBlockXfbOffsets(TQualifier&, TTypeList&);
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void fixBlockUniformOffsets(TQualifier&, TTypeList&);
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void addQualifierToExisting(const TSourceLoc&, TQualifier, const TString& identifier);
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void addQualifierToExisting(const TSourceLoc&, TQualifier, TIdentifierList&);
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void updateStandaloneQualifierDefaults(const TSourceLoc&, const TPublicType&);
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void wrapupSwitchSubsequence(TIntermAggregate* statements, TIntermNode* branchNode);
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TIntermNode* addSwitch(const TSourceLoc&, TIntermTyped* expression, TIntermAggregate* body);
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void updateImplicitArraySize(const TSourceLoc&, TIntermNode*, int index);
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void nestStatement() { ++statementNestingLevel; }
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void unnestStatement() { --statementNestingLevel; }
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void pushScope() { symbolTable.push(); }
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void popScope() { symbolTable.pop(0); }
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protected:
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void inheritGlobalDefaults(TQualifier& dst) const;
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TVariable* makeInternalVariable(const char* name, const TType&) const;
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TVariable* declareNonArray(const TSourceLoc&, TString& identifier, TType&, bool& newDeclaration);
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void declareArray(const TSourceLoc&, TString& identifier, const TType&, TSymbol*&, bool& newDeclaration);
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TIntermNode* executeInitializer(const TSourceLoc&, TIntermTyped* initializer, TVariable* variable);
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TIntermTyped* convertInitializerList(const TSourceLoc&, const TType&, TIntermTyped* initializer);
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TOperator mapTypeToConstructorOp(const TType&) const;
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void outputMessage(const TSourceLoc&, const char* szReason, const char* szToken,
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const char* szExtraInfoFormat, TPrefixType prefix,
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va_list args);
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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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int controlFlowNestingLevel; // 0 if outside all flow control
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int statementNestingLevel; // 0 if outside all flow control or compound statements
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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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TList<int> switchLevel; // the statementNestingLevel the current switch statement is at, which must match the level of its case statements
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bool inEntrypoint; // if inside a function, true if the function is the entry point
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bool postMainReturn; // if inside a function, true if the function is the entry point and this is after a return statement
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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 currentBlockQualifier;
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TBuiltInResource resources;
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TLimits& limits;
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HlslParseContext(HlslParseContext&);
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HlslParseContext& operator=(HlslParseContext&);
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TMap<TString, TExtensionBehavior> extensionBehavior; // for each extension string, what its current behavior is set to
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static const int maxSamplerIndex = EsdNumDims * (EbtNumTypes * (2 * 2 * 2)); // see computeSamplerTypeIndex()
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bool afterEOF;
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TQualifier globalBufferDefaults;
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TQualifier globalUniformDefaults;
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TQualifier globalInputDefaults;
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TQualifier globalOutputDefaults;
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TString currentCaller; // name of last function body entered (not valid when at global scope)
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TIdSetType inductiveLoopIds;
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TVector<TIntermTyped*> needsIndexLimitationChecking;
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//
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// Geometry shader input arrays:
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// - array sizing is based on input primitive and/or explicit size
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//
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// Tessellation control output arrays:
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// - array sizing is based on output layout(vertices=...) and/or explicit size
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//
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// Both:
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// - array sizing is retroactive
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// - built-in block redeclarations interact with this
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//
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// Design:
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// - use a per-context "resize-list", a list of symbols whose array sizes
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// can be fixed
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//
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// - the resize-list starts empty at beginning of user-shader compilation, it does
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// not have built-ins in it
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//
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// - on built-in array use: copyUp() symbol and add it to the resize-list
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//
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// - on user array declaration: add it to the resize-list
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//
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// - on block redeclaration: copyUp() symbol and add it to the resize-list
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// * note, that appropriately gives an error if redeclaring a block that
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// was already used and hence already copied-up
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//
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// - on seeing a layout declaration that sizes the array, fix everything in the
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// resize-list, giving errors for mismatch
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//
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// - on seeing an array size declaration, give errors on mismatch between it and previous
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// array-sizing declarations
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//
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TVector<TSymbol*> ioArraySymbolResizeList;
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};
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} // end namespace glslang
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#endif // HLSL_PARSE_INCLUDED_
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