1 files changed, 128 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_util/IntermNode_util.h b/gfx/angle/checkout/src/compiler/translator/tree_util/IntermNode_util.h
new file mode 100644
index 0000000000..5cf0a117d3
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/translator/tree_util/IntermNode_util.h
@@ -0,0 +1,128 @@
+//
+// Copyright 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"
+#include "compiler/translator/tree_util/FindFunction.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 *CreateFloatNode(float value, TPrecision precision);
+TIntermConstantUnion *CreateVecNode(const float values[],
+                                    unsigned int vecSize,
+                                    TPrecision precision);
+TIntermConstantUnion *CreateUVecNode(const unsigned int values[],
+                                     unsigned int vecSize,
+                                     TPrecision precision);
+TIntermConstantUnion *CreateIndexNode(int index);
+TIntermConstantUnion *CreateUIntNode(unsigned int value);
+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);
+std::pair<const TVariable *, const TVariable *> DeclareStructure(
+    TIntermBlock *root,
+    TSymbolTable *symbolTable,
+    TFieldList *fieldList,
+    TQualifier qualifier,
+    const TMemoryQualifier &memoryQualifier,
+    uint32_t arraySize,
+    const ImmutableString &structTypeName,
+    const ImmutableString *structInstanceName);
+const TVariable *DeclareInterfaceBlock(TIntermBlock *root,
+                                       TSymbolTable *symbolTable,
+                                       TFieldList *fieldList,
+                                       TQualifier qualifier,
+                                       const TLayoutQualifier &layoutQualifier,
+                                       const TMemoryQualifier &memoryQualifier,
+                                       uint32_t arraySize,
+                                       const ImmutableString &blockTypeName,
+                                       const ImmutableString &blockVariableName);
+
+// 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 ImmutableString &name,
+                                       const TSymbolTable &symbolTable);
+
+// Note: this can't access desktop GLSL built-ins. Those can only be accessed directly through
+// BuiltIn.h.
+TIntermSymbol *ReferenceBuiltInVariable(const ImmutableString &name,
+                                        const TSymbolTable &symbolTable,
+                                        int shaderVersion);
+
+TIntermTyped *CreateBuiltInFunctionCallNode(const char *name,
+                                            TIntermSequence *arguments,
+                                            const TSymbolTable &symbolTable,
+                                            int shaderVersion);
+TIntermTyped *CreateBuiltInFunctionCallNode(const char *name,
+                                            const std::initializer_list<TIntermNode *> &arguments,
+                                            const TSymbolTable &symbolTable,
+                                            int shaderVersion);
+TIntermTyped *CreateBuiltInUnaryFunctionCallNode(const char *name,
+                                                 TIntermTyped *argument,
+                                                 const TSymbolTable &symbolTable,
+                                                 int shaderVersion);
+
+int GetESSLOrGLSLVersion(ShShaderSpec spec, int esslVersion, int glslVersion);
+
+inline void GetSwizzleIndex(TVector<int> *indexOut) {}
+
+template <typename T, typename... ArgsT>
+void GetSwizzleIndex(TVector<int> *indexOut, T arg, ArgsT... args)
+{
+    indexOut->push_back(arg);
+    GetSwizzleIndex(indexOut, args...);
+}
+
+template <typename... ArgsT>
+TIntermSwizzle *CreateSwizzle(TIntermTyped *reference, ArgsT... args)
+{
+    TVector<int> swizzleIndex;
+    GetSwizzleIndex(&swizzleIndex, args...);
+    return new TIntermSwizzle(reference, swizzleIndex);
+}
+
+// Returns true if a block ends in a branch (break, continue, return, etc).  This is only correct
+// after PruneNoOps, because it expects empty blocks after a branch to have been already pruned,
+// i.e. a block can only end in a branch if its last statement is a branch or is a block ending in
+// branch.
+bool EndsInBranch(TIntermBlock *block);
+
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_INTERMNODEUTIL_H_