kc3-lang/angle/src/compiler/translator/IntermNode_util.h

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• Hash : b60d30f7
  Author :
  Date : 2018-01-16T12:31:06
  

  Make TVariable type immutable
  
  This enables using constexpr types for built-in variables and some of
  the variables created in AST transformations.
  
  BUG=angleproject:2267
  TEST=angle_unittests
  
  Change-Id: Ie85b3c9872a071a7c023ced013b14ad91cff7cee
  Reviewed-on: https://chromium-review.googlesource.com/868134
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/IntermNode_util.h

• //
  // Copyright (c) 2017 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.
  //
  // IntermNode_util.h: High-level utilities for creating AST nodes and node hierarchies. Mostly meant
  // to be used in AST transforms.
  
  #ifndef COMPILER_TRANSLATOR_INTERMNODEUTIL_H_
  #define COMPILER_TRANSLATOR_INTERMNODEUTIL_H_
  
  #include "compiler/translator/IntermNode.h"
  
  namespace sh
  {
  
  class TSymbolTable;
  class TVariable;
  
  TIntermFunctionPrototype *CreateInternalFunctionPrototypeNode(const TFunction &func);
  TIntermFunctionDefinition *CreateInternalFunctionDefinitionNode(const TFunction &func,
                                                                  TIntermBlock *functionBody);
  
  TIntermTyped *CreateZeroNode(const TType &type);
  TIntermConstantUnion *CreateIndexNode(int index);
  TIntermConstantUnion *CreateBoolNode(bool value);
  
  TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type);
  TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type, TQualifier qualifier);
  
  TIntermSymbol *CreateTempSymbolNode(const TVariable *tempVariable);
  TIntermDeclaration *CreateTempDeclarationNode(const TVariable *tempVariable);
  TIntermDeclaration *CreateTempInitDeclarationNode(const TVariable *tempVariable,
                                                    TIntermTyped *initializer);
  TIntermBinary *CreateTempAssignmentNode(const TVariable *tempVariable, TIntermTyped *rightNode);
  
  TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
                                 const TType *type,
                                 TQualifier qualifier,
                                 TIntermDeclaration **declarationOut);
  TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
                                 TIntermTyped *initializer,
                                 TQualifier qualifier,
                                 TIntermDeclaration **declarationOut);
  
  // If the input node is nullptr, return nullptr.
  // If the input node is a block node, return it.
  // If the input node is not a block node, put it inside a block node and return that.
  TIntermBlock *EnsureBlock(TIntermNode *node);
  
  // Should be called from inside Compiler::compileTreeImpl() where the global level is in scope.
  TIntermSymbol *ReferenceGlobalVariable(const TString &name, const TSymbolTable &symbolTable);
  
  // Note: this can access desktop GLSL built-ins that are hidden from the parser.
  TIntermSymbol *ReferenceBuiltInVariable(const TString &name,
                                          const TSymbolTable &symbolTable,
                                          int shaderVersion);
  
  TIntermTyped *CreateBuiltInFunctionCallNode(const TString &name,
                                              TIntermSequence *arguments,
                                              const TSymbolTable &symbolTable,
                                              int shaderVersion);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_INTERMNODEUTIL_H_

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