1 //
2 // Copyright 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 #include "compiler/translator/tree_util/FindFunction.h"
14
15 namespace sh
16 {
17
18 class TSymbolTable;
19 class TVariable;
20
21 TIntermFunctionPrototype *CreateInternalFunctionPrototypeNode(const TFunction &func);
22 TIntermFunctionDefinition *CreateInternalFunctionDefinitionNode(const TFunction &func,
23 TIntermBlock *functionBody);
24
25 TIntermTyped *CreateZeroNode(const TType &type);
26 TIntermConstantUnion *CreateFloatNode(float value);
27 TIntermConstantUnion *CreateIndexNode(int index);
28 TIntermConstantUnion *CreateBoolNode(bool value);
29
30 TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type);
31 TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type, TQualifier qualifier);
32
33 TIntermSymbol *CreateTempSymbolNode(const TVariable *tempVariable);
34 TIntermDeclaration *CreateTempDeclarationNode(const TVariable *tempVariable);
35 TIntermDeclaration *CreateTempInitDeclarationNode(const TVariable *tempVariable,
36 TIntermTyped *initializer);
37 TIntermBinary *CreateTempAssignmentNode(const TVariable *tempVariable, TIntermTyped *rightNode);
38
39 TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
40 const TType *type,
41 TQualifier qualifier,
42 TIntermDeclaration **declarationOut);
43 TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
44 TIntermTyped *initializer,
45 TQualifier qualifier,
46 TIntermDeclaration **declarationOut);
47 const TVariable *DeclareInterfaceBlock(TIntermBlock *root,
48 TSymbolTable *symbolTable,
49 TFieldList *fieldList,
50 TQualifier qualifier,
51 const TMemoryQualifier &memoryQualifier,
52 uint32_t arraySize,
53 const ImmutableString &blockTypeName,
54 const ImmutableString &blockVariableName);
55
56 // If the input node is nullptr, return nullptr.
57 // If the input node is a block node, return it.
58 // If the input node is not a block node, put it inside a block node and return that.
59 TIntermBlock *EnsureBlock(TIntermNode *node);
60
61 // Should be called from inside Compiler::compileTreeImpl() where the global level is in scope.
62 TIntermSymbol *ReferenceGlobalVariable(const ImmutableString &name,
63 const TSymbolTable &symbolTable);
64
65 // Note: this can't access desktop GLSL built-ins. Those can only be accessed directly through
66 // BuiltIn.h.
67 TIntermSymbol *ReferenceBuiltInVariable(const ImmutableString &name,
68 const TSymbolTable &symbolTable,
69 int shaderVersion);
70
71 TIntermTyped *CreateBuiltInFunctionCallNode(const char *name,
72 TIntermSequence *arguments,
73 const TSymbolTable &symbolTable,
74 int shaderVersion);
75
GetSwizzleIndex(TVector<int> * indexOut)76 inline void GetSwizzleIndex(TVector<int> *indexOut) {}
77
78 template <typename T, typename... ArgsT>
GetSwizzleIndex(TVector<int> * indexOut,T arg,ArgsT...args)79 void GetSwizzleIndex(TVector<int> *indexOut, T arg, ArgsT... args)
80 {
81 indexOut->push_back(arg);
82 GetSwizzleIndex(indexOut, args...);
83 }
84
85 template <typename... ArgsT>
CreateSwizzle(TIntermTyped * reference,ArgsT...args)86 TIntermSwizzle *CreateSwizzle(TIntermTyped *reference, ArgsT... args)
87 {
88 TVector<int> swizzleIndex;
89 GetSwizzleIndex(&swizzleIndex, args...);
90 return new TIntermSwizzle(reference, swizzleIndex);
91 }
92
93 } // namespace sh
94
95 #endif // COMPILER_TRANSLATOR_INTERMNODEUTIL_H_
96