1// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//    http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef _LOCAL_INTERMEDIATE_INCLUDED_
16#define _LOCAL_INTERMEDIATE_INCLUDED_
17
18#include "intermediate.h"
19
20struct TVectorFields {
21	int offsets[4];
22	int num;
23};
24
25//
26// Set of helper functions to help parse and build the tree.
27//
28class TInfoSink;
29class TIntermediate {
30public:
31	POOL_ALLOCATOR_NEW_DELETE();
32
33	TIntermediate(TInfoSink& i) : infoSink(i) { }
34	TIntermSymbol* addSymbol(int Id, const TString&, const TType&, const TSourceLoc&);
35	TIntermTyped* addBinaryMath(TOperator op, TIntermTyped* left, TIntermTyped* right, const TSourceLoc&);
36	TIntermTyped* addAssign(TOperator op, TIntermTyped* left, TIntermTyped* right, const TSourceLoc&);
37	TIntermTyped* addIndex(TOperator op, TIntermTyped* base, TIntermTyped* index, const TSourceLoc&);
38	TIntermTyped* addUnaryMath(TOperator op, TIntermTyped* child, const TSourceLoc&, const TType*);
39	TIntermAggregate* growAggregate(TIntermNode* left, TIntermNode* right, const TSourceLoc&);
40	TIntermAggregate* makeAggregate(TIntermNode* node, const TSourceLoc&);
41	TIntermAggregate* setAggregateOperator(TIntermNode*, TOperator, const TSourceLoc&);
42	TIntermNode*  addSelection(TIntermTyped* cond, TIntermNodePair code, const TSourceLoc&);
43	TIntermTyped* addSelection(TIntermTyped* cond, TIntermTyped* trueBlock, TIntermTyped* falseBlock, const TSourceLoc&);
44	TIntermSwitch *addSwitch(TIntermTyped *init, TIntermAggregate *statementList, const TSourceLoc &line);
45	TIntermCase *addCase(TIntermTyped *condition, const TSourceLoc &line);
46	TIntermTyped* addComma(TIntermTyped* left, TIntermTyped* right, const TSourceLoc&);
47	TIntermConstantUnion* addConstantUnion(ConstantUnion*, const TType&, const TSourceLoc&);
48	TIntermTyped* promoteConstantUnion(TBasicType, TIntermConstantUnion*);
49	bool parseConstTree(const TSourceLoc&, TIntermNode*, ConstantUnion*, TOperator, TType, bool singleConstantParam = false);
50	TIntermNode* addLoop(TLoopType, TIntermNode*, TIntermTyped*, TIntermTyped*, TIntermNode*, const TSourceLoc&);
51	TIntermBranch* addBranch(TOperator, const TSourceLoc&);
52	TIntermBranch* addBranch(TOperator, TIntermTyped*, const TSourceLoc&);
53	TIntermTyped* addSwizzle(TVectorFields&, const TSourceLoc&);
54	bool postProcess(TIntermNode*);
55	void outputTree(TIntermNode*);
56
57protected:
58	TInfoSink& infoSink;
59
60private:
61	void operator=(TIntermediate&); // prevent assignments
62};
63
64#endif // _LOCAL_INTERMEDIATE_INCLUDED_
65