Qt 4.8
qscriptsyntaxchecker_p.h
Go to the documentation of this file.
1 /****************************************************************************
2 **
3 ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
5 **
6 ** This file is part of the QtScript module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL-ONLY$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser
11 ** General Public License version 2.1 as published by the Free Software
12 ** Foundation and appearing in the file LICENSE.LGPL included in the
13 ** packaging of this file. Please review the following information to
14 ** ensure the GNU Lesser General Public License version 2.1 requirements
15 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
16 **
17 ** If you have questions regarding the use of this file, please contact
18 ** us via http://www.qt-project.org/.
19 **
20 ** $QT_END_LICENSE$
21 **
22 ****************************************************************************/
23 
24 #ifndef QSCRIPTSYNTAXCHECKER_H
25 #define QSCRIPTSYNTAXCHECKER_H
26 
27 //
28 // W A R N I N G
29 // -------------
30 //
31 // This file is not part of the Qt API. It exists purely as an
32 // implementation detail. This header file may change from version to
33 // version without notice, or even be removed.
34 //
35 // We mean it.
36 //
37 
38 #include <QtCore/qstring.h>
39 
40 #include "qscriptgrammar_p.h"
41 
43 
44 namespace QScript {
45 
46 class Lexer;
47 
48 class SyntaxChecker: protected QScriptGrammar
49 {
50 public:
51  enum State {
55  };
56 
57  struct Result {
58  Result(State s, int ln, int col, const QString &msg)
59  : state(s), errorLineNumber(ln), errorColumnNumber(col),
60  errorMessage(msg) {}
65  };
66 
67  SyntaxChecker();
69 
70  Result checkSyntax(const QString &code);
71 
72 protected:
73  bool automatic(QScript::Lexer *lexer, int token) const;
74  inline void reallocateStack();
75 
76 protected:
77  int tos;
80 };
81 
83 {
84  if (! stack_size)
85  stack_size = 128;
86  else
87  stack_size <<= 1;
88 
89  state_stack = reinterpret_cast<int*> (qRealloc(state_stack, stack_size * sizeof(int)));
90 }
91 
92 } // namespace QScript
93 
95 
96 #endif
Result(State s, int ln, int col, const QString &msg)
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
Q_CORE_EXPORT void * qRealloc(void *ptr, size_t size)
Definition: qmalloc.cpp:63
The QString class provides a Unicode character string.
Definition: qstring.h:83
Result checkSyntax(const QString &code)
bool automatic(QScript::Lexer *lexer, int token) const
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The State element defines configurations of objects and properties.