summaryrefslogtreecommitdiffstats
path: root/src/3rdparty/angle/src/compiler/translator/RemoveSwitchFallThrough.h
blob: db8699327c1a9479085aa56dbedf8534d117633f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
//
// Copyright (c) 2002-2015 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.
//

#ifndef COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
#define COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_

#include "compiler/translator/IntermNode.h"

class RemoveSwitchFallThrough : public TIntermTraverser
{
  public:
    // When given a statementList from a switch AST node, return an updated
    // statementList that has fall-through removed.
    static TIntermAggregate *removeFallThrough(TIntermAggregate *statementList);

  private:
    RemoveSwitchFallThrough(TIntermAggregate *statementList);

    void visitSymbol(TIntermSymbol *node) override;
    void visitConstantUnion(TIntermConstantUnion *node) override;
    bool visitBinary(Visit, TIntermBinary *node) override;
    bool visitUnary(Visit, TIntermUnary *node) override;
    bool visitSelection(Visit visit, TIntermSelection *node) override;
    bool visitSwitch(Visit, TIntermSwitch *node) override;
    bool visitCase(Visit, TIntermCase *node) override;
    bool visitAggregate(Visit, TIntermAggregate *node) override;
    bool visitLoop(Visit, TIntermLoop *node) override;
    bool visitBranch(Visit, TIntermBranch *node) override;

    void outputSequence(TIntermSequence *sequence, size_t startIndex);
    void handlePreviousCase();

    TIntermAggregate *mStatementList;
    TIntermAggregate *mStatementListOut;
    bool mLastStatementWasBreak;
    TIntermAggregate *mPreviousCase;
    std::vector<TIntermAggregate *> mCasesSharingBreak;
};

#endif // COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_