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      1 //
      2 // Copyright (c) 2002-2010 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 
      7 #ifndef _LOCAL_INTERMEDIATE_INCLUDED_
      8 #define _LOCAL_INTERMEDIATE_INCLUDED_
      9 
     10 #include "GLSLANG/ShaderLang.h"
     11 #include "compiler/intermediate.h"
     12 #include "compiler/SymbolTable.h"
     13 
     14 struct TVectorFields {
     15     int offsets[4];
     16     int num;
     17 };
     18 
     19 //
     20 // Set of helper functions to help parse and build the tree.
     21 //
     22 class TInfoSink;
     23 class TIntermediate {
     24 public:
     25     POOL_ALLOCATOR_NEW_DELETE();
     26     TIntermediate(TInfoSink& i) : infoSink(i) { }
     27 
     28     TIntermSymbol* addSymbol(int Id, const TString&, const TType&, const TSourceLoc&);
     29     TIntermTyped* addConversion(TOperator, const TType&, TIntermTyped*);
     30     TIntermTyped* addBinaryMath(TOperator op, TIntermTyped* left, TIntermTyped* right, const TSourceLoc&, TSymbolTable&);
     31     TIntermTyped* addAssign(TOperator op, TIntermTyped* left, TIntermTyped* right, const TSourceLoc&);
     32     TIntermTyped* addIndex(TOperator op, TIntermTyped* base, TIntermTyped* index, const TSourceLoc&);
     33     TIntermTyped* addUnaryMath(TOperator op, TIntermNode* child, const TSourceLoc&, TSymbolTable&);
     34     TIntermAggregate* growAggregate(TIntermNode* left, TIntermNode* right, const TSourceLoc&);
     35     TIntermAggregate* makeAggregate(TIntermNode* node, const TSourceLoc&);
     36     TIntermAggregate* setAggregateOperator(TIntermNode*, TOperator, const TSourceLoc&);
     37     TIntermNode*  addSelection(TIntermTyped* cond, TIntermNodePair code, const TSourceLoc&);
     38     TIntermTyped* addSelection(TIntermTyped* cond, TIntermTyped* trueBlock, TIntermTyped* falseBlock, const TSourceLoc&);
     39     TIntermTyped* addComma(TIntermTyped* left, TIntermTyped* right, const TSourceLoc&);
     40     TIntermConstantUnion* addConstantUnion(ConstantUnion*, const TType&, const TSourceLoc&);
     41     TIntermTyped* promoteConstantUnion(TBasicType, TIntermConstantUnion*) ;
     42     bool parseConstTree(const TSourceLoc&, TIntermNode*, ConstantUnion*, TOperator, TSymbolTable&, TType, bool singleConstantParam = false);
     43     TIntermNode* addLoop(TLoopType, TIntermNode*, TIntermTyped*, TIntermTyped*, TIntermNode*, const TSourceLoc&);
     44     TIntermBranch* addBranch(TOperator, const TSourceLoc&);
     45     TIntermBranch* addBranch(TOperator, TIntermTyped*, const TSourceLoc&);
     46     TIntermTyped* addSwizzle(TVectorFields&, const TSourceLoc&);
     47     bool postProcess(TIntermNode*);
     48     void remove(TIntermNode*);
     49     void outputTree(TIntermNode*);
     50 
     51 private:
     52     void operator=(TIntermediate&); // prevent assignments
     53 
     54     TInfoSink& infoSink;
     55 };
     56 
     57 #endif // _LOCAL_INTERMEDIATE_INCLUDED_
     58