1 // 2 // Copyright (c) 2017 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 // IntermNode_util.h: High-level utilities for creating AST nodes and node hierarchies. Mostly meant 7 // to be used in AST transforms. 8 9 #ifndef COMPILER_TRANSLATOR_INTERMNODEUTIL_H_ 10 #define COMPILER_TRANSLATOR_INTERMNODEUTIL_H_ 11 12 #include "compiler/translator/IntermNode.h" 13 14 namespace sh 15 { 16 17 class TSymbolTable; 18 class TVariable; 19 20 TIntermFunctionPrototype *CreateInternalFunctionPrototypeNode(const TFunction &func); 21 TIntermFunctionDefinition *CreateInternalFunctionDefinitionNode(const TFunction &func, 22 TIntermBlock *functionBody); 23 24 TIntermTyped *CreateZeroNode(const TType &type); 25 TIntermConstantUnion *CreateIndexNode(int index); 26 TIntermConstantUnion *CreateBoolNode(bool value); 27 28 TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type); 29 TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type, TQualifier qualifier); 30 31 TIntermSymbol *CreateTempSymbolNode(const TVariable *tempVariable); 32 TIntermDeclaration *CreateTempDeclarationNode(const TVariable *tempVariable); 33 TIntermDeclaration *CreateTempInitDeclarationNode(const TVariable *tempVariable, 34 TIntermTyped *initializer); 35 TIntermBinary *CreateTempAssignmentNode(const TVariable *tempVariable, TIntermTyped *rightNode); 36 37 TVariable *DeclareTempVariable(TSymbolTable *symbolTable, 38 const TType *type, 39 TQualifier qualifier, 40 TIntermDeclaration **declarationOut); 41 TVariable *DeclareTempVariable(TSymbolTable *symbolTable, 42 TIntermTyped *initializer, 43 TQualifier qualifier, 44 TIntermDeclaration **declarationOut); 45 46 // If the input node is nullptr, return nullptr. 47 // If the input node is a block node, return it. 48 // If the input node is not a block node, put it inside a block node and return that. 49 TIntermBlock *EnsureBlock(TIntermNode *node); 50 51 // Should be called from inside Compiler::compileTreeImpl() where the global level is in scope. 52 TIntermSymbol *ReferenceGlobalVariable(const ImmutableString &name, 53 const TSymbolTable &symbolTable); 54 55 // Note: this can access desktop GLSL built-ins that are hidden from the parser. 56 TIntermSymbol *ReferenceBuiltInVariable(const ImmutableString &name, 57 const TSymbolTable &symbolTable, 58 int shaderVersion); 59 60 TIntermTyped *CreateBuiltInFunctionCallNode(const char *name, 61 TIntermSequence *arguments, 62 const TSymbolTable &symbolTable, 63 int shaderVersion); 64 65 } // namespace sh 66 67 #endif // COMPILER_TRANSLATOR_INTERMNODEUTIL_H_