| author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
| Fri, 14 May 2010 16:40:13 +0300 | |
| changeset 22 | 79de32ba3296 |
| parent 18 | 2f34d5167611 |
| child 33 | 3e2da88830cd |
| permissions | -rw-r--r-- |
| 0 | 1 |
/**************************************************************************** |
2 |
** |
|
|
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2f34d5167611
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
3
diff
changeset
|
3 |
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
| 0 | 4 |
** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 |
** |
|
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** This file is part of the QtScript module of the Qt Toolkit. |
|
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** |
|
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3
41300fa6a67c
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
9 |
** $QT_BEGIN_LICENSE:LGPL-ONLY$ |
| 0 | 10 |
** GNU Lesser General Public License Usage |
|
3
41300fa6a67c
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
11 |
** This file may be used under the terms of the GNU Lesser |
| 0 | 12 |
** General Public License version 2.1 as published by the Free Software |
13 |
** Foundation and appearing in the file LICENSE.LGPL included in the |
|
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** packaging of this file. Please review the following information to |
|
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include "qscriptlexer_p.h" |
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25 |
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26 |
#include "qscriptgrammar_p.h" |
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#include <ctype.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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QT_BEGIN_NAMESPACE |
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33 |
||
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22
79de32ba3296
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
18
diff
changeset
|
34 |
Q_DECL_IMPORT extern double qstrtod(const char *s00, char const **se, bool *ok); |
| 0 | 35 |
|
36 |
#define shiftWindowsLineBreak() \ |
|
37 |
do { \
|
|
38 |
if (((current == '\r') && (next1 == '\n')) \ |
|
39 |
|| ((current == '\n') && (next1 == '\r'))) { \
|
|
40 |
shift(1); \ |
|
41 |
} \ |
|
42 |
} \ |
|
43 |
while (0) |
|
44 |
||
45 |
typedef double qsreal; // ### |
|
46 |
||
47 |
namespace QScript {
|
|
48 |
extern qsreal integerFromString(const char *buf, int size, int radix); |
|
49 |
} |
|
50 |
||
51 |
QScript::Lexer::Lexer(QScriptEnginePrivate *eng) |
|
52 |
: driver(eng), |
|
53 |
yylineno(0), |
|
54 |
size8(128), size16(128), restrKeyword(false), |
|
55 |
stackToken(-1), pos(0), |
|
56 |
code(0), length(0), |
|
57 |
bol(true), |
|
58 |
current(0), next1(0), next2(0), next3(0), |
|
59 |
err(NoError), |
|
60 |
check_reserved(true), |
|
61 |
parenthesesState(IgnoreParentheses), |
|
62 |
prohibitAutomaticSemicolon(false) |
|
63 |
{
|
|
64 |
// allocate space for read buffers |
|
65 |
buffer8 = new char[size8]; |
|
66 |
buffer16 = new QChar[size16]; |
|
67 |
pattern = 0; |
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68 |
flags = 0; |
|
69 |
||
70 |
} |
|
71 |
||
72 |
QScript::Lexer::~Lexer() |
|
73 |
{
|
|
74 |
delete [] buffer8; |
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75 |
delete [] buffer16; |
|
76 |
} |
|
77 |
||
78 |
void QScript::Lexer::setCode(const QString &c, int lineno) |
|
79 |
{
|
|
80 |
errmsg = QString(); |
|
81 |
yylineno = lineno; |
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82 |
yycolumn = 1; |
|
83 |
restrKeyword = false; |
|
84 |
delimited = false; |
|
85 |
stackToken = -1; |
|
86 |
pos = 0; |
|
87 |
code = c.unicode(); |
|
88 |
length = c.length(); |
|
89 |
bol = true; |
|
90 |
||
91 |
// read first characters |
|
92 |
current = (length > 0) ? code[0].unicode() : 0; |
|
93 |
next1 = (length > 1) ? code[1].unicode() : 0; |
|
94 |
next2 = (length > 2) ? code[2].unicode() : 0; |
|
95 |
next3 = (length > 3) ? code[3].unicode() : 0; |
|
96 |
} |
|
97 |
||
98 |
void QScript::Lexer::shift(uint p) |
|
99 |
{
|
|
100 |
while (p--) {
|
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101 |
++pos; |
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102 |
++yycolumn; |
|
103 |
current = next1; |
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104 |
next1 = next2; |
|
105 |
next2 = next3; |
|
106 |
next3 = (pos + 3 < length) ? code[pos+3].unicode() : 0; |
|
107 |
} |
|
108 |
} |
|
109 |
||
110 |
void QScript::Lexer::setDone(State s) |
|
111 |
{
|
|
112 |
state = s; |
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113 |
done = true; |
|
114 |
} |
|
115 |
||
116 |
int QScript::Lexer::findReservedWord(const QChar *c, int size) const |
|
117 |
{
|
|
118 |
switch (size) {
|
|
119 |
case 2: {
|
|
120 |
if (c[0] == QLatin1Char('d') && c[1] == QLatin1Char('o'))
|
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121 |
return QScriptGrammar::T_DO; |
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122 |
else if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('f'))
|
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123 |
return QScriptGrammar::T_IF; |
|
124 |
else if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('n'))
|
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125 |
return QScriptGrammar::T_IN; |
|
126 |
} break; |
|
127 |
||
128 |
case 3: {
|
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129 |
if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('o') && c[2] == QLatin1Char('r'))
|
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130 |
return QScriptGrammar::T_FOR; |
|
131 |
else if (c[0] == QLatin1Char('n') && c[1] == QLatin1Char('e') && c[2] == QLatin1Char('w'))
|
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return QScriptGrammar::T_NEW; |
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133 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('r') && c[2] == QLatin1Char('y'))
|
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134 |
return QScriptGrammar::T_TRY; |
|
135 |
else if (c[0] == QLatin1Char('v') && c[1] == QLatin1Char('a') && c[2] == QLatin1Char('r'))
|
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136 |
return QScriptGrammar::T_VAR; |
|
137 |
else if (check_reserved) {
|
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138 |
if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('n') && c[2] == QLatin1Char('t'))
|
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139 |
return QScriptGrammar::T_RESERVED_WORD; |
|
140 |
} |
|
141 |
} break; |
|
142 |
||
143 |
case 4: {
|
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144 |
if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('a')
|
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145 |
&& c[2] == QLatin1Char('s') && c[3] == QLatin1Char('e'))
|
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146 |
return QScriptGrammar::T_CASE; |
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147 |
else if (c[0] == QLatin1Char('e') && c[1] == QLatin1Char('l')
|
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148 |
&& c[2] == QLatin1Char('s') && c[3] == QLatin1Char('e'))
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return QScriptGrammar::T_ELSE; |
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150 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('h')
|
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&& c[2] == QLatin1Char('i') && c[3] == QLatin1Char('s'))
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return QScriptGrammar::T_THIS; |
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153 |
else if (c[0] == QLatin1Char('v') && c[1] == QLatin1Char('o')
|
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&& c[2] == QLatin1Char('i') && c[3] == QLatin1Char('d'))
|
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return QScriptGrammar::T_VOID; |
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156 |
else if (c[0] == QLatin1Char('w') && c[1] == QLatin1Char('i')
|
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157 |
&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('h'))
|
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return QScriptGrammar::T_WITH; |
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159 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('r')
|
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&& c[2] == QLatin1Char('u') && c[3] == QLatin1Char('e'))
|
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return QScriptGrammar::T_TRUE; |
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162 |
else if (c[0] == QLatin1Char('n') && c[1] == QLatin1Char('u')
|
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&& c[2] == QLatin1Char('l') && c[3] == QLatin1Char('l'))
|
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return QScriptGrammar::T_NULL; |
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165 |
else if (check_reserved) {
|
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166 |
if (c[0] == QLatin1Char('e') && c[1] == QLatin1Char('n')
|
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&& c[2] == QLatin1Char('u') && c[3] == QLatin1Char('m'))
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return QScriptGrammar::T_RESERVED_WORD; |
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else if (c[0] == QLatin1Char('b') && c[1] == QLatin1Char('y')
|
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&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('e'))
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return QScriptGrammar::T_RESERVED_WORD; |
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172 |
else if (c[0] == QLatin1Char('l') && c[1] == QLatin1Char('o')
|
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&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('g'))
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return QScriptGrammar::T_RESERVED_WORD; |
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175 |
else if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('h')
|
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&& c[2] == QLatin1Char('a') && c[3] == QLatin1Char('r'))
|
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177 |
return QScriptGrammar::T_RESERVED_WORD; |
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178 |
else if (c[0] == QLatin1Char('g') && c[1] == QLatin1Char('o')
|
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&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('o'))
|
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return QScriptGrammar::T_RESERVED_WORD; |
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181 |
} |
|
182 |
} break; |
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183 |
||
184 |
case 5: {
|
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185 |
if (c[0] == QLatin1Char('b') && c[1] == QLatin1Char('r')
|
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&& c[2] == QLatin1Char('e') && c[3] == QLatin1Char('a')
|
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&& c[4] == QLatin1Char('k'))
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return QScriptGrammar::T_BREAK; |
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189 |
else if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('a')
|
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&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('c')
|
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&& c[4] == QLatin1Char('h'))
|
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return QScriptGrammar::T_CATCH; |
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193 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('h')
|
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&& c[2] == QLatin1Char('r') && c[3] == QLatin1Char('o')
|
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&& c[4] == QLatin1Char('w'))
|
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return QScriptGrammar::T_THROW; |
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197 |
else if (c[0] == QLatin1Char('w') && c[1] == QLatin1Char('h')
|
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&& c[2] == QLatin1Char('i') && c[3] == QLatin1Char('l')
|
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199 |
&& c[4] == QLatin1Char('e'))
|
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return QScriptGrammar::T_WHILE; |
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201 |
else if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('o')
|
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&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('s')
|
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&& c[4] == QLatin1Char('t'))
|
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return QScriptGrammar::T_CONST; |
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205 |
else if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('a')
|
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&& c[2] == QLatin1Char('l') && c[3] == QLatin1Char('s')
|
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207 |
&& c[4] == QLatin1Char('e'))
|
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208 |
return QScriptGrammar::T_FALSE; |
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209 |
else if (check_reserved) {
|
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210 |
if (c[0] == QLatin1Char('s') && c[1] == QLatin1Char('h')
|
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211 |
&& c[2] == QLatin1Char('o') && c[3] == QLatin1Char('r')
|
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212 |
&& c[4] == QLatin1Char('t'))
|
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213 |
return QScriptGrammar::T_RESERVED_WORD; |
|
214 |
else if (c[0] == QLatin1Char('s') && c[1] == QLatin1Char('u')
|
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215 |
&& c[2] == QLatin1Char('p') && c[3] == QLatin1Char('e')
|
|
216 |
&& c[4] == QLatin1Char('r'))
|
|
217 |
return QScriptGrammar::T_RESERVED_WORD; |
|
218 |
else if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('i')
|
|
219 |
&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('a')
|
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220 |
&& c[4] == QLatin1Char('l'))
|
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221 |
return QScriptGrammar::T_RESERVED_WORD; |
|
222 |
else if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('l')
|
|
223 |
&& c[2] == QLatin1Char('a') && c[3] == QLatin1Char('s')
|
|
224 |
&& c[4] == QLatin1Char('s'))
|
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225 |
return QScriptGrammar::T_RESERVED_WORD; |
|
226 |
else if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('l')
|
|
227 |
&& c[2] == QLatin1Char('o') && c[3] == QLatin1Char('a')
|
|
228 |
&& c[4] == QLatin1Char('t'))
|
|
229 |
return QScriptGrammar::T_RESERVED_WORD; |
|
230 |
} |
|
231 |
} break; |
|
232 |
||
233 |
case 6: {
|
|
234 |
if (c[0] == QLatin1Char('d') && c[1] == QLatin1Char('e')
|
|
235 |
&& c[2] == QLatin1Char('l') && c[3] == QLatin1Char('e')
|
|
236 |
&& c[4] == QLatin1Char('t') && c[5] == QLatin1Char('e'))
|
|
237 |
return QScriptGrammar::T_DELETE; |
|
238 |
else if (c[0] == QLatin1Char('r') && c[1] == QLatin1Char('e')
|
|
239 |
&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('u')
|
|
240 |
&& c[4] == QLatin1Char('r') && c[5] == QLatin1Char('n'))
|
|
241 |
return QScriptGrammar::T_RETURN; |
|
242 |
else if (c[0] == QLatin1Char('s') && c[1] == QLatin1Char('w')
|
|
243 |
&& c[2] == QLatin1Char('i') && c[3] == QLatin1Char('t')
|
|
244 |
&& c[4] == QLatin1Char('c') && c[5] == QLatin1Char('h'))
|
|
245 |
return QScriptGrammar::T_SWITCH; |
|
246 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('y')
|
|
247 |
&& c[2] == QLatin1Char('p') && c[3] == QLatin1Char('e')
|
|
248 |
&& c[4] == QLatin1Char('o') && c[5] == QLatin1Char('f'))
|
|
249 |
return QScriptGrammar::T_TYPEOF; |
|
250 |
else if (check_reserved) {
|
|
251 |
if (c[0] == QLatin1Char('e') && c[1] == QLatin1Char('x')
|
|
252 |
&& c[2] == QLatin1Char('p') && c[3] == QLatin1Char('o')
|
|
253 |
&& c[4] == QLatin1Char('r') && c[5] == QLatin1Char('t'))
|
|
254 |
return QScriptGrammar::T_RESERVED_WORD; |
|
255 |
else if (c[0] == QLatin1Char('s') && c[1] == QLatin1Char('t')
|
|
256 |
&& c[2] == QLatin1Char('a') && c[3] == QLatin1Char('t')
|
|
257 |
&& c[4] == QLatin1Char('i') && c[5] == QLatin1Char('c'))
|
|
258 |
return QScriptGrammar::T_RESERVED_WORD; |
|
259 |
else if (c[0] == QLatin1Char('d') && c[1] == QLatin1Char('o')
|
|
260 |
&& c[2] == QLatin1Char('u') && c[3] == QLatin1Char('b')
|
|
261 |
&& c[4] == QLatin1Char('l') && c[5] == QLatin1Char('e'))
|
|
262 |
return QScriptGrammar::T_RESERVED_WORD; |
|
263 |
else if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('m')
|
|
264 |
&& c[2] == QLatin1Char('p') && c[3] == QLatin1Char('o')
|
|
265 |
&& c[4] == QLatin1Char('r') && c[5] == QLatin1Char('t'))
|
|
266 |
return QScriptGrammar::T_RESERVED_WORD; |
|
267 |
else if (c[0] == QLatin1Char('p') && c[1] == QLatin1Char('u')
|
|
268 |
&& c[2] == QLatin1Char('b') && c[3] == QLatin1Char('l')
|
|
269 |
&& c[4] == QLatin1Char('i') && c[5] == QLatin1Char('c'))
|
|
270 |
return QScriptGrammar::T_RESERVED_WORD; |
|
271 |
else if (c[0] == QLatin1Char('n') && c[1] == QLatin1Char('a')
|
|
272 |
&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('i')
|
|
273 |
&& c[4] == QLatin1Char('v') && c[5] == QLatin1Char('e'))
|
|
274 |
return QScriptGrammar::T_RESERVED_WORD; |
|
275 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('h')
|
|
276 |
&& c[2] == QLatin1Char('r') && c[3] == QLatin1Char('o')
|
|
277 |
&& c[4] == QLatin1Char('w') && c[5] == QLatin1Char('s'))
|
|
278 |
return QScriptGrammar::T_RESERVED_WORD; |
|
279 |
} |
|
280 |
} break; |
|
281 |
||
282 |
case 7: {
|
|
283 |
if (c[0] == QLatin1Char('d') && c[1] == QLatin1Char('e')
|
|
284 |
&& c[2] == QLatin1Char('f') && c[3] == QLatin1Char('a')
|
|
285 |
&& c[4] == QLatin1Char('u') && c[5] == QLatin1Char('l')
|
|
286 |
&& c[6] == QLatin1Char('t'))
|
|
287 |
return QScriptGrammar::T_DEFAULT; |
|
288 |
else if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('i')
|
|
289 |
&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('a')
|
|
290 |
&& c[4] == QLatin1Char('l') && c[5] == QLatin1Char('l')
|
|
291 |
&& c[6] == QLatin1Char('y'))
|
|
292 |
return QScriptGrammar::T_FINALLY; |
|
293 |
else if (check_reserved) {
|
|
294 |
if (c[0] == QLatin1Char('b') && c[1] == QLatin1Char('o')
|
|
295 |
&& c[2] == QLatin1Char('o') && c[3] == QLatin1Char('l')
|
|
296 |
&& c[4] == QLatin1Char('e') && c[5] == QLatin1Char('a')
|
|
297 |
&& c[6] == QLatin1Char('n'))
|
|
298 |
return QScriptGrammar::T_RESERVED_WORD; |
|
299 |
else if (c[0] == QLatin1Char('e') && c[1] == QLatin1Char('x')
|
|
300 |
&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('e')
|
|
301 |
&& c[4] == QLatin1Char('n') && c[5] == QLatin1Char('d')
|
|
302 |
&& c[6] == QLatin1Char('s'))
|
|
303 |
return QScriptGrammar::T_RESERVED_WORD; |
|
304 |
else if (c[0] == QLatin1Char('p') && c[1] == QLatin1Char('a')
|
|
305 |
&& c[2] == QLatin1Char('c') && c[3] == QLatin1Char('k')
|
|
306 |
&& c[4] == QLatin1Char('a') && c[5] == QLatin1Char('g')
|
|
307 |
&& c[6] == QLatin1Char('e'))
|
|
308 |
return QScriptGrammar::T_RESERVED_WORD; |
|
309 |
else if (c[0] == QLatin1Char('p') && c[1] == QLatin1Char('r')
|
|
310 |
&& c[2] == QLatin1Char('i') && c[3] == QLatin1Char('v')
|
|
311 |
&& c[4] == QLatin1Char('a') && c[5] == QLatin1Char('t')
|
|
312 |
&& c[6] == QLatin1Char('e'))
|
|
313 |
return QScriptGrammar::T_RESERVED_WORD; |
|
314 |
} |
|
315 |
} break; |
|
316 |
||
317 |
case 8: {
|
|
318 |
if (c[0] == QLatin1Char('c') && c[1] == QLatin1Char('o')
|
|
319 |
&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('t')
|
|
320 |
&& c[4] == QLatin1Char('i') && c[5] == QLatin1Char('n')
|
|
321 |
&& c[6] == QLatin1Char('u') && c[7] == QLatin1Char('e'))
|
|
322 |
return QScriptGrammar::T_CONTINUE; |
|
323 |
else if (c[0] == QLatin1Char('f') && c[1] == QLatin1Char('u')
|
|
324 |
&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('c')
|
|
325 |
&& c[4] == QLatin1Char('t') && c[5] == QLatin1Char('i')
|
|
326 |
&& c[6] == QLatin1Char('o') && c[7] == QLatin1Char('n'))
|
|
327 |
return QScriptGrammar::T_FUNCTION; |
|
328 |
else if (c[0] == QLatin1Char('d') && c[1] == QLatin1Char('e')
|
|
329 |
&& c[2] == QLatin1Char('b') && c[3] == QLatin1Char('u')
|
|
330 |
&& c[4] == QLatin1Char('g') && c[5] == QLatin1Char('g')
|
|
331 |
&& c[6] == QLatin1Char('e') && c[7] == QLatin1Char('r'))
|
|
332 |
return QScriptGrammar::T_DEBUGGER; |
|
333 |
else if (check_reserved) {
|
|
334 |
if (c[0] == QLatin1Char('a') && c[1] == QLatin1Char('b')
|
|
335 |
&& c[2] == QLatin1Char('s') && c[3] == QLatin1Char('t')
|
|
336 |
&& c[4] == QLatin1Char('r') && c[5] == QLatin1Char('a')
|
|
337 |
&& c[6] == QLatin1Char('c') && c[7] == QLatin1Char('t'))
|
|
338 |
return QScriptGrammar::T_RESERVED_WORD; |
|
339 |
else if (c[0] == QLatin1Char('v') && c[1] == QLatin1Char('o')
|
|
340 |
&& c[2] == QLatin1Char('l') && c[3] == QLatin1Char('a')
|
|
341 |
&& c[4] == QLatin1Char('t') && c[5] == QLatin1Char('i')
|
|
342 |
&& c[6] == QLatin1Char('l') && c[7] == QLatin1Char('e'))
|
|
343 |
return QScriptGrammar::T_RESERVED_WORD; |
|
344 |
} |
|
345 |
} break; |
|
346 |
||
347 |
case 9: {
|
|
348 |
if (check_reserved) {
|
|
349 |
if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('n')
|
|
350 |
&& c[2] == QLatin1Char('t') && c[3] == QLatin1Char('e')
|
|
351 |
&& c[4] == QLatin1Char('r') && c[5] == QLatin1Char('f')
|
|
352 |
&& c[6] == QLatin1Char('a') && c[7] == QLatin1Char('c')
|
|
353 |
&& c[8] == QLatin1Char('e'))
|
|
354 |
return QScriptGrammar::T_RESERVED_WORD; |
|
355 |
else if (c[0] == QLatin1Char('t') && c[1] == QLatin1Char('r')
|
|
356 |
&& c[2] == QLatin1Char('a') && c[3] == QLatin1Char('n')
|
|
357 |
&& c[4] == QLatin1Char('s') && c[5] == QLatin1Char('i')
|
|
358 |
&& c[6] == QLatin1Char('e') && c[7] == QLatin1Char('n')
|
|
359 |
&& c[8] == QLatin1Char('t'))
|
|
360 |
return QScriptGrammar::T_RESERVED_WORD; |
|
361 |
else if (c[0] == QLatin1Char('p') && c[1] == QLatin1Char('r')
|
|
362 |
&& c[2] == QLatin1Char('o') && c[3] == QLatin1Char('t')
|
|
363 |
&& c[4] == QLatin1Char('e') && c[5] == QLatin1Char('c')
|
|
364 |
&& c[6] == QLatin1Char('t') && c[7] == QLatin1Char('e')
|
|
365 |
&& c[8] == QLatin1Char('d'))
|
|
366 |
return QScriptGrammar::T_RESERVED_WORD; |
|
367 |
} |
|
368 |
} break; |
|
369 |
||
370 |
case 10: {
|
|
371 |
if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('n')
|
|
372 |
&& c[2] == QLatin1Char('s') && c[3] == QLatin1Char('t')
|
|
373 |
&& c[4] == QLatin1Char('a') && c[5] == QLatin1Char('n')
|
|
374 |
&& c[6] == QLatin1Char('c') && c[7] == QLatin1Char('e')
|
|
375 |
&& c[8] == QLatin1Char('o') && c[9] == QLatin1Char('f'))
|
|
376 |
return QScriptGrammar::T_INSTANCEOF; |
|
377 |
else if (check_reserved) {
|
|
378 |
if (c[0] == QLatin1Char('i') && c[1] == QLatin1Char('m')
|
|
379 |
&& c[2] == QLatin1Char('p') && c[3] == QLatin1Char('l')
|
|
380 |
&& c[4] == QLatin1Char('e') && c[5] == QLatin1Char('m')
|
|
381 |
&& c[6] == QLatin1Char('e') && c[7] == QLatin1Char('n')
|
|
382 |
&& c[8] == QLatin1Char('t') && c[9] == QLatin1Char('s'))
|
|
383 |
return QScriptGrammar::T_RESERVED_WORD; |
|
384 |
} |
|
385 |
} break; |
|
386 |
||
387 |
case 12: {
|
|
388 |
if (check_reserved) {
|
|
389 |
if (c[0] == QLatin1Char('s') && c[1] == QLatin1Char('y')
|
|
390 |
&& c[2] == QLatin1Char('n') && c[3] == QLatin1Char('c')
|
|
391 |
&& c[4] == QLatin1Char('h') && c[5] == QLatin1Char('r')
|
|
392 |
&& c[6] == QLatin1Char('o') && c[7] == QLatin1Char('n')
|
|
393 |
&& c[8] == QLatin1Char('i') && c[9] == QLatin1Char('z')
|
|
394 |
&& c[10] == QLatin1Char('e') && c[11] == QLatin1Char('d'))
|
|
395 |
return QScriptGrammar::T_RESERVED_WORD; |
|
396 |
} |
|
397 |
} break; |
|
398 |
||
399 |
} // switch |
|
400 |
||
401 |
return -1; |
|
402 |
} |
|
403 |
||
404 |
int QScript::Lexer::lex() |
|
405 |
{
|
|
406 |
int token = 0; |
|
407 |
state = Start; |
|
408 |
ushort stringType = 0; // either single or double quotes |
|
409 |
pos8 = pos16 = 0; |
|
410 |
done = false; |
|
411 |
terminator = false; |
|
412 |
||
413 |
// did we push a token on the stack previously ? |
|
414 |
// (after an automatic semicolon insertion) |
|
415 |
if (stackToken >= 0) {
|
|
416 |
setDone(Other); |
|
417 |
token = stackToken; |
|
418 |
stackToken = -1; |
|
419 |
} |
|
420 |
||
421 |
while (!done) {
|
|
422 |
switch (state) {
|
|
423 |
case Start: |
|
424 |
if (isWhiteSpace()) {
|
|
425 |
// do nothing |
|
426 |
} else if (current == '/' && next1 == '/') {
|
|
427 |
recordStartPos(); |
|
428 |
shift(1); |
|
429 |
state = InSingleLineComment; |
|
430 |
} else if (current == '/' && next1 == '*') {
|
|
431 |
recordStartPos(); |
|
432 |
shift(1); |
|
433 |
state = InMultiLineComment; |
|
434 |
} else if (current == 0) {
|
|
435 |
syncProhibitAutomaticSemicolon(); |
|
436 |
if (!terminator && !delimited && !prohibitAutomaticSemicolon) {
|
|
437 |
// automatic semicolon insertion if program incomplete |
|
438 |
token = QScriptGrammar::T_SEMICOLON; |
|
439 |
stackToken = 0; |
|
440 |
setDone(Other); |
|
441 |
} else {
|
|
442 |
setDone(Eof); |
|
443 |
} |
|
444 |
} else if (isLineTerminator()) {
|
|
445 |
shiftWindowsLineBreak(); |
|
446 |
yylineno++; |
|
447 |
yycolumn = 0; |
|
448 |
bol = true; |
|
449 |
terminator = true; |
|
450 |
syncProhibitAutomaticSemicolon(); |
|
451 |
if (restrKeyword) {
|
|
452 |
token = QScriptGrammar::T_SEMICOLON; |
|
453 |
setDone(Other); |
|
454 |
} |
|
455 |
} else if (current == '"' || current == '\'') {
|
|
456 |
recordStartPos(); |
|
457 |
state = InString; |
|
458 |
stringType = current; |
|
459 |
} else if (isIdentLetter(current)) {
|
|
460 |
recordStartPos(); |
|
461 |
record16(current); |
|
462 |
state = InIdentifier; |
|
463 |
} else if (current == '0') {
|
|
464 |
recordStartPos(); |
|
465 |
record8(current); |
|
466 |
state = InNum0; |
|
467 |
} else if (isDecimalDigit(current)) {
|
|
468 |
recordStartPos(); |
|
469 |
record8(current); |
|
470 |
state = InNum; |
|
471 |
} else if (current == '.' && isDecimalDigit(next1)) {
|
|
472 |
recordStartPos(); |
|
473 |
record8(current); |
|
474 |
state = InDecimal; |
|
475 |
} else {
|
|
476 |
recordStartPos(); |
|
477 |
token = matchPunctuator(current, next1, next2, next3); |
|
478 |
if (token != -1) {
|
|
479 |
if (terminator && !delimited && !prohibitAutomaticSemicolon |
|
480 |
&& (token == QScriptGrammar::T_PLUS_PLUS |
|
481 |
|| token == QScriptGrammar::T_MINUS_MINUS)) {
|
|
482 |
// automatic semicolon insertion |
|
483 |
stackToken = token; |
|
484 |
token = QScriptGrammar::T_SEMICOLON; |
|
485 |
} |
|
486 |
setDone(Other); |
|
487 |
} |
|
488 |
else {
|
|
489 |
setDone(Bad); |
|
490 |
err = IllegalCharacter; |
|
491 |
errmsg = QLatin1String("Illegal character");
|
|
492 |
} |
|
493 |
} |
|
494 |
break; |
|
495 |
case InString: |
|
496 |
if (current == stringType) {
|
|
497 |
shift(1); |
|
498 |
setDone(String); |
|
499 |
} else if (current == 0 || isLineTerminator()) {
|
|
500 |
setDone(Bad); |
|
501 |
err = UnclosedStringLiteral; |
|
502 |
errmsg = QLatin1String("Unclosed string at end of line");
|
|
503 |
} else if (current == '\\') {
|
|
504 |
state = InEscapeSequence; |
|
505 |
} else {
|
|
506 |
record16(current); |
|
507 |
} |
|
508 |
break; |
|
509 |
// Escape Sequences inside of strings |
|
510 |
case InEscapeSequence: |
|
511 |
if (isOctalDigit(current)) {
|
|
512 |
if (current >= '0' && current <= '3' && |
|
513 |
isOctalDigit(next1) && isOctalDigit(next2)) {
|
|
514 |
record16(convertOctal(current, next1, next2)); |
|
515 |
shift(2); |
|
516 |
state = InString; |
|
517 |
} else if (isOctalDigit(current) && |
|
518 |
isOctalDigit(next1)) {
|
|
519 |
record16(convertOctal('0', current, next1));
|
|
520 |
shift(1); |
|
521 |
state = InString; |
|
522 |
} else if (isOctalDigit(current)) {
|
|
523 |
record16(convertOctal('0', '0', current));
|
|
524 |
state = InString; |
|
525 |
} else {
|
|
526 |
setDone(Bad); |
|
527 |
err = IllegalEscapeSequence; |
|
528 |
errmsg = QLatin1String("Illegal escape squence");
|
|
529 |
} |
|
530 |
} else if (current == 'x') |
|
531 |
state = InHexEscape; |
|
532 |
else if (current == 'u') |
|
533 |
state = InUnicodeEscape; |
|
534 |
else {
|
|
535 |
if (isLineTerminator()) {
|
|
536 |
shiftWindowsLineBreak(); |
|
537 |
yylineno++; |
|
538 |
yycolumn = 0; |
|
539 |
bol = true; |
|
540 |
} else {
|
|
541 |
record16(singleEscape(current)); |
|
542 |
} |
|
543 |
state = InString; |
|
544 |
} |
|
545 |
break; |
|
546 |
case InHexEscape: |
|
547 |
if (isHexDigit(current) && isHexDigit(next1)) {
|
|
548 |
state = InString; |
|
549 |
record16(QLatin1Char(convertHex(current, next1))); |
|
550 |
shift(1); |
|
551 |
} else if (current == stringType) {
|
|
552 |
record16(QLatin1Char('x'));
|
|
553 |
shift(1); |
|
554 |
setDone(String); |
|
555 |
} else {
|
|
556 |
record16(QLatin1Char('x'));
|
|
557 |
record16(current); |
|
558 |
state = InString; |
|
559 |
} |
|
560 |
break; |
|
561 |
case InUnicodeEscape: |
|
562 |
if (isHexDigit(current) && isHexDigit(next1) && |
|
563 |
isHexDigit(next2) && isHexDigit(next3)) {
|
|
564 |
record16(convertUnicode(current, next1, next2, next3)); |
|
565 |
shift(3); |
|
566 |
state = InString; |
|
567 |
} else if (current == stringType) {
|
|
568 |
record16(QLatin1Char('u'));
|
|
569 |
shift(1); |
|
570 |
setDone(String); |
|
571 |
} else {
|
|
572 |
setDone(Bad); |
|
573 |
err = IllegalUnicodeEscapeSequence; |
|
574 |
errmsg = QLatin1String("Illegal unicode escape sequence");
|
|
575 |
} |
|
576 |
break; |
|
577 |
case InSingleLineComment: |
|
578 |
if (isLineTerminator()) {
|
|
579 |
shiftWindowsLineBreak(); |
|
580 |
yylineno++; |
|
581 |
yycolumn = 0; |
|
582 |
terminator = true; |
|
583 |
bol = true; |
|
584 |
if (restrKeyword) {
|
|
585 |
token = QScriptGrammar::T_SEMICOLON; |
|
586 |
setDone(Other); |
|
587 |
} else |
|
588 |
state = Start; |
|
589 |
} else if (current == 0) {
|
|
590 |
setDone(Eof); |
|
591 |
} |
|
592 |
break; |
|
593 |
case InMultiLineComment: |
|
594 |
if (current == 0) {
|
|
595 |
setDone(Bad); |
|
596 |
err = UnclosedComment; |
|
597 |
errmsg = QLatin1String("Unclosed comment at end of file");
|
|
598 |
} else if (isLineTerminator()) {
|
|
599 |
shiftWindowsLineBreak(); |
|
600 |
yylineno++; |
|
601 |
} else if (current == '*' && next1 == '/') {
|
|
602 |
state = Start; |
|
603 |
shift(1); |
|
604 |
} |
|
605 |
break; |
|
606 |
case InIdentifier: |
|
607 |
if (isIdentLetter(current) || isDecimalDigit(current)) {
|
|
608 |
record16(current); |
|
609 |
break; |
|
610 |
} |
|
611 |
setDone(Identifier); |
|
612 |
break; |
|
613 |
case InNum0: |
|
614 |
if (current == 'x' || current == 'X') {
|
|
615 |
record8(current); |
|
616 |
state = InHex; |
|
617 |
} else if (current == '.') {
|
|
618 |
record8(current); |
|
619 |
state = InDecimal; |
|
620 |
} else if (current == 'e' || current == 'E') {
|
|
621 |
record8(current); |
|
622 |
state = InExponentIndicator; |
|
623 |
} else if (isOctalDigit(current)) {
|
|
624 |
record8(current); |
|
625 |
state = InOctal; |
|
626 |
} else if (isDecimalDigit(current)) {
|
|
627 |
record8(current); |
|
628 |
state = InDecimal; |
|
629 |
} else {
|
|
630 |
setDone(Number); |
|
631 |
} |
|
632 |
break; |
|
633 |
case InHex: |
|
634 |
if (isHexDigit(current)) |
|
635 |
record8(current); |
|
636 |
else |
|
637 |
setDone(Hex); |
|
638 |
break; |
|
639 |
case InOctal: |
|
640 |
if (isOctalDigit(current)) {
|
|
641 |
record8(current); |
|
642 |
} else if (isDecimalDigit(current)) {
|
|
643 |
record8(current); |
|
644 |
state = InDecimal; |
|
645 |
} else {
|
|
646 |
setDone(Octal); |
|
647 |
} |
|
648 |
break; |
|
649 |
case InNum: |
|
650 |
if (isDecimalDigit(current)) {
|
|
651 |
record8(current); |
|
652 |
} else if (current == '.') {
|
|
653 |
record8(current); |
|
654 |
state = InDecimal; |
|
655 |
} else if (current == 'e' || current == 'E') {
|
|
656 |
record8(current); |
|
657 |
state = InExponentIndicator; |
|
658 |
} else {
|
|
659 |
setDone(Number); |
|
660 |
} |
|
661 |
break; |
|
662 |
case InDecimal: |
|
663 |
if (isDecimalDigit(current)) {
|
|
664 |
record8(current); |
|
665 |
} else if (current == 'e' || current == 'E') {
|
|
666 |
record8(current); |
|
667 |
state = InExponentIndicator; |
|
668 |
} else {
|
|
669 |
setDone(Number); |
|
670 |
} |
|
671 |
break; |
|
672 |
case InExponentIndicator: |
|
673 |
if (current == '+' || current == '-') {
|
|
674 |
record8(current); |
|
675 |
} else if (isDecimalDigit(current)) {
|
|
676 |
record8(current); |
|
677 |
state = InExponent; |
|
678 |
} else {
|
|
679 |
setDone(Bad); |
|
680 |
err = IllegalExponentIndicator; |
|
681 |
errmsg = QLatin1String("Illegal syntax for exponential number");
|
|
682 |
} |
|
683 |
break; |
|
684 |
case InExponent: |
|
685 |
if (isDecimalDigit(current)) {
|
|
686 |
record8(current); |
|
687 |
} else {
|
|
688 |
setDone(Number); |
|
689 |
} |
|
690 |
break; |
|
691 |
default: |
|
692 |
Q_ASSERT_X(0, "Lexer::lex", "Unhandled state in switch statement"); |
|
693 |
} |
|
694 |
||
695 |
// move on to the next character |
|
696 |
if (!done) |
|
697 |
shift(1); |
|
698 |
if (state != Start && state != InSingleLineComment) |
|
699 |
bol = false; |
|
700 |
} |
|
701 |
||
702 |
// no identifiers allowed directly after numeric literal, e.g. "3in" is bad |
|
703 |
if ((state == Number || state == Octal || state == Hex) |
|
704 |
&& isIdentLetter(current)) {
|
|
705 |
state = Bad; |
|
706 |
err = IllegalIdentifier; |
|
707 |
errmsg = QLatin1String("Identifier cannot start with numeric literal");
|
|
708 |
} |
|
709 |
||
710 |
// terminate string |
|
711 |
buffer8[pos8] = '\0'; |
|
712 |
||
713 |
double dval = 0; |
|
714 |
if (state == Number) {
|
|
715 |
dval = qstrtod(buffer8, 0, 0); |
|
716 |
} else if (state == Hex) { // scan hex numbers
|
|
717 |
dval = QScript::integerFromString(buffer8, pos8, 16); |
|
718 |
state = Number; |
|
719 |
} else if (state == Octal) { // scan octal number
|
|
720 |
dval = QScript::integerFromString(buffer8, pos8, 8); |
|
721 |
state = Number; |
|
722 |
} |
|
723 |
||
724 |
restrKeyword = false; |
|
725 |
delimited = false; |
|
726 |
||
727 |
switch (parenthesesState) {
|
|
728 |
case IgnoreParentheses: |
|
729 |
break; |
|
730 |
case CountParentheses: |
|
731 |
if (token == QScriptGrammar::T_RPAREN) {
|
|
732 |
--parenthesesCount; |
|
733 |
if (parenthesesCount == 0) |
|
734 |
parenthesesState = BalancedParentheses; |
|
735 |
} else if (token == QScriptGrammar::T_LPAREN) {
|
|
736 |
++parenthesesCount; |
|
737 |
} |
|
738 |
break; |
|
739 |
case BalancedParentheses: |
|
740 |
parenthesesState = IgnoreParentheses; |
|
741 |
break; |
|
742 |
} |
|
743 |
||
744 |
switch (state) {
|
|
745 |
case Eof: |
|
746 |
return 0; |
|
747 |
case Other: |
|
748 |
if(token == QScriptGrammar::T_RBRACE || token == QScriptGrammar::T_SEMICOLON) |
|
749 |
delimited = true; |
|
750 |
return token; |
|
751 |
case Identifier: |
|
752 |
if ((token = findReservedWord(buffer16, pos16)) < 0) {
|
|
753 |
/* TODO: close leak on parse error. same holds true for String */ |
|
754 |
if (driver) {
|
|
755 |
Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented"); |
|
756 |
qsyylval.ustr = 0; // driver->intern(buffer16, pos16); |
|
757 |
} else |
|
758 |
qsyylval.ustr = 0; |
|
759 |
return QScriptGrammar::T_IDENTIFIER; |
|
760 |
} |
|
761 |
if (token == QScriptGrammar::T_CONTINUE || token == QScriptGrammar::T_BREAK |
|
762 |
|| token == QScriptGrammar::T_RETURN || token == QScriptGrammar::T_THROW) {
|
|
763 |
restrKeyword = true; |
|
764 |
} else if (token == QScriptGrammar::T_IF || token == QScriptGrammar::T_FOR |
|
765 |
|| token == QScriptGrammar::T_WHILE || token == QScriptGrammar::T_WITH) {
|
|
766 |
parenthesesState = CountParentheses; |
|
767 |
parenthesesCount = 0; |
|
768 |
} else if (token == QScriptGrammar::T_DO) {
|
|
769 |
parenthesesState = BalancedParentheses; |
|
770 |
} |
|
771 |
return token; |
|
772 |
case String: |
|
773 |
if (driver) {
|
|
774 |
Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented"); |
|
775 |
qsyylval.ustr = 0; // driver->intern(buffer16, pos16); |
|
776 |
} else |
|
777 |
qsyylval.ustr = 0; |
|
778 |
return QScriptGrammar::T_STRING_LITERAL; |
|
779 |
case Number: |
|
780 |
qsyylval.dval = dval; |
|
781 |
return QScriptGrammar::T_NUMERIC_LITERAL; |
|
782 |
case Bad: |
|
783 |
return -1; |
|
784 |
default: |
|
785 |
Q_ASSERT(!"unhandled numeration value in switch"); |
|
786 |
return -1; |
|
787 |
} |
|
788 |
} |
|
789 |
||
790 |
bool QScript::Lexer::isWhiteSpace() const |
|
791 |
{
|
|
792 |
return (current == ' ' || current == '\t' || |
|
793 |
current == 0x0b || current == 0x0c); |
|
794 |
} |
|
795 |
||
796 |
bool QScript::Lexer::isLineTerminator() const |
|
797 |
{
|
|
798 |
return (current == '\n' || current == '\r'); |
|
799 |
} |
|
800 |
||
801 |
bool QScript::Lexer::isIdentLetter(ushort c) |
|
802 |
{
|
|
803 |
/* TODO: allow other legitimate unicode chars */ |
|
804 |
return ((c >= 'a' && c <= 'z') |
|
805 |
|| (c >= 'A' && c <= 'Z') |
|
806 |
|| c == '$' |
|
807 |
|| c == '_'); |
|
808 |
} |
|
809 |
||
810 |
bool QScript::Lexer::isDecimalDigit(ushort c) |
|
811 |
{
|
|
812 |
return (c >= '0' && c <= '9'); |
|
813 |
} |
|
814 |
||
815 |
bool QScript::Lexer::isHexDigit(ushort c) const |
|
816 |
{
|
|
817 |
return ((c >= '0' && c <= '9') |
|
818 |
|| (c >= 'a' && c <= 'f') |
|
819 |
|| (c >= 'A' && c <= 'F')); |
|
820 |
} |
|
821 |
||
822 |
bool QScript::Lexer::isOctalDigit(ushort c) const |
|
823 |
{
|
|
824 |
return (c >= '0' && c <= '7'); |
|
825 |
} |
|
826 |
||
827 |
int QScript::Lexer::matchPunctuator(ushort c1, ushort c2, |
|
828 |
ushort c3, ushort c4) |
|
829 |
{
|
|
830 |
if (c1 == '>' && c2 == '>' && c3 == '>' && c4 == '=') {
|
|
831 |
shift(4); |
|
832 |
return QScriptGrammar::T_GT_GT_GT_EQ; |
|
833 |
} else if (c1 == '=' && c2 == '=' && c3 == '=') {
|
|
834 |
shift(3); |
|
835 |
return QScriptGrammar::T_EQ_EQ_EQ; |
|
836 |
} else if (c1 == '!' && c2 == '=' && c3 == '=') {
|
|
837 |
shift(3); |
|
838 |
return QScriptGrammar::T_NOT_EQ_EQ; |
|
839 |
} else if (c1 == '>' && c2 == '>' && c3 == '>') {
|
|
840 |
shift(3); |
|
841 |
return QScriptGrammar::T_GT_GT_GT; |
|
842 |
} else if (c1 == '<' && c2 == '<' && c3 == '=') {
|
|
843 |
shift(3); |
|
844 |
return QScriptGrammar::T_LT_LT_EQ; |
|
845 |
} else if (c1 == '>' && c2 == '>' && c3 == '=') {
|
|
846 |
shift(3); |
|
847 |
return QScriptGrammar::T_GT_GT_EQ; |
|
848 |
} else if (c1 == '<' && c2 == '=') {
|
|
849 |
shift(2); |
|
850 |
return QScriptGrammar::T_LE; |
|
851 |
} else if (c1 == '>' && c2 == '=') {
|
|
852 |
shift(2); |
|
853 |
return QScriptGrammar::T_GE; |
|
854 |
} else if (c1 == '!' && c2 == '=') {
|
|
855 |
shift(2); |
|
856 |
return QScriptGrammar::T_NOT_EQ; |
|
857 |
} else if (c1 == '+' && c2 == '+') {
|
|
858 |
shift(2); |
|
859 |
return QScriptGrammar::T_PLUS_PLUS; |
|
860 |
} else if (c1 == '-' && c2 == '-') {
|
|
861 |
shift(2); |
|
862 |
return QScriptGrammar::T_MINUS_MINUS; |
|
863 |
} else if (c1 == '=' && c2 == '=') {
|
|
864 |
shift(2); |
|
865 |
return QScriptGrammar::T_EQ_EQ; |
|
866 |
} else if (c1 == '+' && c2 == '=') {
|
|
867 |
shift(2); |
|
868 |
return QScriptGrammar::T_PLUS_EQ; |
|
869 |
} else if (c1 == '-' && c2 == '=') {
|
|
870 |
shift(2); |
|
871 |
return QScriptGrammar::T_MINUS_EQ; |
|
872 |
} else if (c1 == '*' && c2 == '=') {
|
|
873 |
shift(2); |
|
874 |
return QScriptGrammar::T_STAR_EQ; |
|
875 |
} else if (c1 == '/' && c2 == '=') {
|
|
876 |
shift(2); |
|
877 |
return QScriptGrammar::T_DIVIDE_EQ; |
|
878 |
} else if (c1 == '&' && c2 == '=') {
|
|
879 |
shift(2); |
|
880 |
return QScriptGrammar::T_AND_EQ; |
|
881 |
} else if (c1 == '^' && c2 == '=') {
|
|
882 |
shift(2); |
|
883 |
return QScriptGrammar::T_XOR_EQ; |
|
884 |
} else if (c1 == '%' && c2 == '=') {
|
|
885 |
shift(2); |
|
886 |
return QScriptGrammar::T_REMAINDER_EQ; |
|
887 |
} else if (c1 == '|' && c2 == '=') {
|
|
888 |
shift(2); |
|
889 |
return QScriptGrammar::T_OR_EQ; |
|
890 |
} else if (c1 == '<' && c2 == '<') {
|
|
891 |
shift(2); |
|
892 |
return QScriptGrammar::T_LT_LT; |
|
893 |
} else if (c1 == '>' && c2 == '>') {
|
|
894 |
shift(2); |
|
895 |
return QScriptGrammar::T_GT_GT; |
|
896 |
} else if (c1 == '&' && c2 == '&') {
|
|
897 |
shift(2); |
|
898 |
return QScriptGrammar::T_AND_AND; |
|
899 |
} else if (c1 == '|' && c2 == '|') {
|
|
900 |
shift(2); |
|
901 |
return QScriptGrammar::T_OR_OR; |
|
902 |
} |
|
903 |
||
904 |
switch(c1) {
|
|
905 |
case '=': shift(1); return QScriptGrammar::T_EQ; |
|
906 |
case '>': shift(1); return QScriptGrammar::T_GT; |
|
907 |
case '<': shift(1); return QScriptGrammar::T_LT; |
|
908 |
case ',': shift(1); return QScriptGrammar::T_COMMA; |
|
909 |
case '!': shift(1); return QScriptGrammar::T_NOT; |
|
910 |
case '~': shift(1); return QScriptGrammar::T_TILDE; |
|
911 |
case '?': shift(1); return QScriptGrammar::T_QUESTION; |
|
912 |
case ':': shift(1); return QScriptGrammar::T_COLON; |
|
913 |
case '.': shift(1); return QScriptGrammar::T_DOT; |
|
914 |
case '+': shift(1); return QScriptGrammar::T_PLUS; |
|
915 |
case '-': shift(1); return QScriptGrammar::T_MINUS; |
|
916 |
case '*': shift(1); return QScriptGrammar::T_STAR; |
|
917 |
case '/': shift(1); return QScriptGrammar::T_DIVIDE_; |
|
918 |
case '&': shift(1); return QScriptGrammar::T_AND; |
|
919 |
case '|': shift(1); return QScriptGrammar::T_OR; |
|
920 |
case '^': shift(1); return QScriptGrammar::T_XOR; |
|
921 |
case '%': shift(1); return QScriptGrammar::T_REMAINDER; |
|
922 |
case '(': shift(1); return QScriptGrammar::T_LPAREN;
|
|
923 |
case ')': shift(1); return QScriptGrammar::T_RPAREN; |
|
924 |
case '{': shift(1); return QScriptGrammar::T_LBRACE;
|
|
925 |
case '}': shift(1); return QScriptGrammar::T_RBRACE; |
|
926 |
case '[': shift(1); return QScriptGrammar::T_LBRACKET; |
|
927 |
case ']': shift(1); return QScriptGrammar::T_RBRACKET; |
|
928 |
case ';': shift(1); return QScriptGrammar::T_SEMICOLON; |
|
929 |
||
930 |
default: return -1; |
|
931 |
} |
|
932 |
} |
|
933 |
||
934 |
ushort QScript::Lexer::singleEscape(ushort c) const |
|
935 |
{
|
|
936 |
switch(c) {
|
|
937 |
case 'b': |
|
938 |
return 0x08; |
|
939 |
case 't': |
|
940 |
return 0x09; |
|
941 |
case 'n': |
|
942 |
return 0x0A; |
|
943 |
case 'v': |
|
944 |
return 0x0B; |
|
945 |
case 'f': |
|
946 |
return 0x0C; |
|
947 |
case 'r': |
|
948 |
return 0x0D; |
|
949 |
case '"': |
|
950 |
return 0x22; |
|
951 |
case '\'': |
|
952 |
return 0x27; |
|
953 |
case '\\': |
|
954 |
return 0x5C; |
|
955 |
default: |
|
956 |
return c; |
|
957 |
} |
|
958 |
} |
|
959 |
||
960 |
ushort QScript::Lexer::convertOctal(ushort c1, ushort c2, |
|
961 |
ushort c3) const |
|
962 |
{
|
|
963 |
return ((c1 - '0') * 64 + (c2 - '0') * 8 + c3 - '0'); |
|
964 |
} |
|
965 |
||
966 |
unsigned char QScript::Lexer::convertHex(ushort c) |
|
967 |
{
|
|
968 |
if (c >= '0' && c <= '9') |
|
969 |
return (c - '0'); |
|
970 |
else if (c >= 'a' && c <= 'f') |
|
971 |
return (c - 'a' + 10); |
|
972 |
else |
|
973 |
return (c - 'A' + 10); |
|
974 |
} |
|
975 |
||
976 |
unsigned char QScript::Lexer::convertHex(ushort c1, ushort c2) |
|
977 |
{
|
|
978 |
return ((convertHex(c1) << 4) + convertHex(c2)); |
|
979 |
} |
|
980 |
||
981 |
QChar QScript::Lexer::convertUnicode(ushort c1, ushort c2, |
|
982 |
ushort c3, ushort c4) |
|
983 |
{
|
|
984 |
return QChar((convertHex(c3) << 4) + convertHex(c4), |
|
985 |
(convertHex(c1) << 4) + convertHex(c2)); |
|
986 |
} |
|
987 |
||
988 |
void QScript::Lexer::record8(ushort c) |
|
989 |
{
|
|
990 |
Q_ASSERT(c <= 0xff); |
|
991 |
||
992 |
// enlarge buffer if full |
|
993 |
if (pos8 >= size8 - 1) {
|
|
994 |
char *tmp = new char[2 * size8]; |
|
995 |
memcpy(tmp, buffer8, size8 * sizeof(char)); |
|
996 |
delete [] buffer8; |
|
997 |
buffer8 = tmp; |
|
998 |
size8 *= 2; |
|
999 |
} |
|
1000 |
||
1001 |
buffer8[pos8++] = (char) c; |
|
1002 |
} |
|
1003 |
||
1004 |
void QScript::Lexer::record16(QChar c) |
|
1005 |
{
|
|
1006 |
// enlarge buffer if full |
|
1007 |
if (pos16 >= size16 - 1) {
|
|
1008 |
QChar *tmp = new QChar[2 * size16]; |
|
1009 |
memcpy(tmp, buffer16, size16 * sizeof(QChar)); |
|
1010 |
delete [] buffer16; |
|
1011 |
buffer16 = tmp; |
|
1012 |
size16 *= 2; |
|
1013 |
} |
|
1014 |
||
1015 |
buffer16[pos16++] = c; |
|
1016 |
} |
|
1017 |
||
1018 |
void QScript::Lexer::recordStartPos() |
|
1019 |
{
|
|
1020 |
startlineno = yylineno; |
|
1021 |
startcolumn = yycolumn; |
|
1022 |
} |
|
1023 |
||
1024 |
bool QScript::Lexer::scanRegExp(RegExpBodyPrefix prefix) |
|
1025 |
{
|
|
1026 |
pos16 = 0; |
|
1027 |
bool lastWasEscape = false; |
|
1028 |
||
1029 |
if (prefix == EqualPrefix) |
|
1030 |
record16(QLatin1Char('='));
|
|
1031 |
||
1032 |
while (1) {
|
|
1033 |
if (isLineTerminator() || current == 0) {
|
|
1034 |
errmsg = QLatin1String("Unterminated regular expression literal");
|
|
1035 |
return false; |
|
1036 |
} |
|
1037 |
else if (current != '/' || lastWasEscape == true) |
|
1038 |
{
|
|
1039 |
record16(current); |
|
1040 |
lastWasEscape = !lastWasEscape && (current == '\\'); |
|
1041 |
} |
|
1042 |
else {
|
|
1043 |
if (driver) {
|
|
1044 |
Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented"); |
|
1045 |
pattern = 0; // driver->intern(buffer16, pos16); |
|
1046 |
} else |
|
1047 |
pattern = 0; |
|
1048 |
pos16 = 0; |
|
1049 |
shift(1); |
|
1050 |
break; |
|
1051 |
} |
|
1052 |
shift(1); |
|
1053 |
} |
|
1054 |
||
1055 |
flags = 0; |
|
1056 |
while (isIdentLetter(current)) {
|
|
1057 |
// current version was remade from this line: |
|
1058 |
//int flag = QScript::Ecma::RegExp::flagFromChar(current); |
|
1059 |
//code was "inlined" because it was only one call to this function |
|
1060 |
int flag; |
|
1061 |
switch (current) {
|
|
1062 |
case 'g': flag = 0x01; break; |
|
1063 |
case 'm': flag = 0x02; break; |
|
1064 |
case 'i': flag = 0x04; break; |
|
1065 |
default: flag = 0; |
|
1066 |
} |
|
1067 |
if (flag == 0) {
|
|
1068 |
errmsg = QString::fromLatin1("Invalid regular expression flag '%0'")
|
|
1069 |
.arg(QChar(current)); |
|
1070 |
return false; |
|
1071 |
} |
|
1072 |
flags |= flag; |
|
1073 |
record16(current); |
|
1074 |
shift(1); |
|
1075 |
} |
|
1076 |
||
1077 |
return true; |
|
1078 |
} |
|
1079 |
||
1080 |
void QScript::Lexer::syncProhibitAutomaticSemicolon() |
|
1081 |
{
|
|
1082 |
if (parenthesesState == BalancedParentheses) {
|
|
1083 |
// we have seen something like "if (foo)", which means we should |
|
1084 |
// never insert an automatic semicolon at this point, since it would |
|
1085 |
// then be expanded into an empty statement (ECMA-262 7.9.1) |
|
1086 |
prohibitAutomaticSemicolon = true; |
|
1087 |
parenthesesState = IgnoreParentheses; |
|
1088 |
} else {
|
|
1089 |
prohibitAutomaticSemicolon = false; |
|
1090 |
} |
|
1091 |
} |
|
1092 |
||
1093 |
QT_END_NAMESPACE |