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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmlrewrite_p.h"
QT_BEGIN_NAMESPACE
namespace QmlRewrite {
QString RewriteBinding::operator()(const QString &code)
{
Engine engine;
NodePool pool(QString(), &engine);
Lexer lexer(&engine);
Parser parser(&engine);
lexer.setCode(code, 0);
parser.parseStatement();
return rewrite(code, 0, parser.statement());
}
void RewriteBinding::accept(AST::Node *node)
{
AST::Node::acceptChild(node, this);
}
QString RewriteBinding::rewrite(QString code, unsigned position,
AST::Statement *node)
{
TextWriter w;
_writer = &w;
_position = position;
accept(node);
unsigned startOfStatement = node->firstSourceLocation().begin() - _position;
unsigned endOfStatement = node->lastSourceLocation().end() - _position;
_writer->replace(startOfStatement, 0, QLatin1String("(function() { "));
_writer->replace(endOfStatement, 0, QLatin1String(" })"));
w.write(&code);
return code;
}
bool RewriteBinding::visit(AST::Block *ast)
{
for (AST::StatementList *it = ast->statements; it; it = it->next) {
if (! it->next) {
// we need to rewrite only the last statement of a block.
accept(it->statement);
}
}
return false;
}
bool RewriteBinding::visit(AST::ExpressionStatement *ast)
{
unsigned startOfExpressionStatement = ast->firstSourceLocation().begin() - _position;
_writer->replace(startOfExpressionStatement, 0, QLatin1String("return "));
return false;
}
} // namespace QmlRewrite
QT_END_NAMESPACE
|
