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//
// 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
{
TIntermFunctionPrototype *CreateInternalFunctionPrototypeNode(const TType &returnType,
const char *name,
const TSymbolUniqueId &functionId);
TIntermFunctionDefinition *CreateInternalFunctionDefinitionNode(const TType &returnType,
const char *name,
TIntermBlock *functionBody,
const TSymbolUniqueId &functionId);
TIntermAggregate *CreateInternalFunctionCallNode(const TType &returnType,
const char *name,
const TSymbolUniqueId &functionId,
TIntermSequence *arguments);
TIntermTyped *CreateZeroNode(const TType &type);
TIntermConstantUnion *CreateIndexNode(int index);
TIntermConstantUnion *CreateBoolNode(bool value);
TIntermSymbol *CreateTempSymbolNode(const TSymbolUniqueId &id,
const TType &type,
TQualifier qualifier);
TIntermDeclaration *CreateTempInitDeclarationNode(const TSymbolUniqueId &id,
TIntermTyped *initializer,
TQualifier qualifier);
// 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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