blob: f8d14660a43c226f6170518203e7ed0e928a321b (
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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//
// 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.
//
// The SeparateArrayInitialization function splits each array initialization into a declaration and an assignment.
// Example:
// type[n] a = initializer;
// will effectively become
// type[n] a;
// a = initializer;
#include "compiler/translator/SeparateArrayInitialization.h"
#include "compiler/translator/IntermNode.h"
namespace
{
class SeparateArrayInitTraverser : private TIntermTraverser
{
public:
static void apply(TIntermNode *root);
private:
SeparateArrayInitTraverser();
bool visitAggregate(Visit, TIntermAggregate *node) override;
};
void SeparateArrayInitTraverser::apply(TIntermNode *root)
{
SeparateArrayInitTraverser separateInit;
root->traverse(&separateInit);
separateInit.updateTree();
}
SeparateArrayInitTraverser::SeparateArrayInitTraverser()
: TIntermTraverser(true, false, false)
{
}
bool SeparateArrayInitTraverser::visitAggregate(Visit, TIntermAggregate *node)
{
if (node->getOp() == EOpDeclaration)
{
TIntermSequence *sequence = node->getSequence();
TIntermBinary *initNode = sequence->back()->getAsBinaryNode();
if (initNode != nullptr && initNode->getOp() == EOpInitialize)
{
TIntermTyped *initializer = initNode->getRight();
if (initializer->isArray())
{
// We rely on that array declarations have been isolated to single declarations.
ASSERT(sequence->size() == 1);
TIntermTyped *symbol = initNode->getLeft();
TIntermAggregate *parentAgg = getParentNode()->getAsAggregate();
ASSERT(parentAgg != nullptr);
TIntermSequence replacements;
TIntermAggregate *replacementDeclaration = new TIntermAggregate;
replacementDeclaration->setOp(EOpDeclaration);
replacementDeclaration->getSequence()->push_back(symbol);
replacementDeclaration->setLine(symbol->getLine());
replacements.push_back(replacementDeclaration);
TIntermBinary *replacementAssignment = new TIntermBinary(EOpAssign);
replacementAssignment->setLeft(symbol);
replacementAssignment->setRight(initializer);
replacementAssignment->setType(initializer->getType());
replacementAssignment->setLine(symbol->getLine());
replacements.push_back(replacementAssignment);
mMultiReplacements.push_back(NodeReplaceWithMultipleEntry(parentAgg, node, replacements));
}
}
return false;
}
return true;
}
} // namespace
void SeparateArrayInitialization(TIntermNode *root)
{
SeparateArrayInitTraverser::apply(root);
}
|
