|
1 ---------------------------------------------------------------------------- |
|
2 -- |
|
3 -- Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 -- All rights reserved. |
|
5 -- Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 -- |
|
7 -- This file is part of the QtCore module of the Qt Toolkit. |
|
8 -- |
|
9 -- $QT_BEGIN_LICENSE:LGPL$ |
|
10 -- No Commercial Usage |
|
11 -- This file contains pre-release code and may not be distributed. |
|
12 -- You may use this file in accordance with the terms and conditions |
|
13 -- contained in the Technology Preview License Agreement accompanying |
|
14 -- this package. |
|
15 -- |
|
16 -- GNU Lesser General Public License Usage |
|
17 -- Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 -- General Public License version 2.1 as published by the Free Software |
|
19 -- Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 -- packaging of this file. Please review the following information to |
|
21 -- ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 -- will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 -- |
|
24 -- In addition, as a special exception, Nokia gives you certain additional |
|
25 -- rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 -- version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 -- |
|
28 -- If you have questions regarding the use of this file, please contact |
|
29 -- Nokia at qt-info@nokia.com. |
|
30 -- |
|
31 -- |
|
32 -- |
|
33 -- |
|
34 -- |
|
35 -- |
|
36 -- |
|
37 -- |
|
38 -- $QT_END_LICENSE$ |
|
39 -- |
|
40 ---------------------------------------------------------------------------- |
|
41 |
|
42 %parser XMLTable |
|
43 |
|
44 %impl xmlreader.cpp |
|
45 |
|
46 %token LEFT_ANGLE |
|
47 %token RIGHT_ANGLE |
|
48 %token ANY |
|
49 |
|
50 %start XmlStream |
|
51 |
|
52 /. |
|
53 #ifndef XMLREADER_H |
|
54 #define XMLREADER_H |
|
55 |
|
56 #include <QtCore> |
|
57 #include <cstdio> |
|
58 #include <cstdlib> |
|
59 #include <cstring> |
|
60 #include "$header" |
|
61 |
|
62 class XMLReader: protected $table |
|
63 { |
|
64 public: |
|
65 XMLReader(const QByteArray &bytes); |
|
66 ~XMLReader(); |
|
67 |
|
68 bool parse(); |
|
69 |
|
70 inline int nextToken() |
|
71 { |
|
72 switch (*bufptr++) { |
|
73 case '\0': |
|
74 return EOF_SYMBOL; |
|
75 |
|
76 case '<': |
|
77 in_tag = true; |
|
78 return LEFT_ANGLE; |
|
79 |
|
80 case '>': |
|
81 if (! in_tag) |
|
82 break; |
|
83 in_tag = false; |
|
84 return RIGHT_ANGLE; |
|
85 break; |
|
86 |
|
87 } // switch |
|
88 |
|
89 return ANY; |
|
90 } |
|
91 |
|
92 protected: |
|
93 inline void reallocateStack(); |
|
94 |
|
95 inline int &sym(int index) |
|
96 { return stack [tos + index - 1].ival; } |
|
97 |
|
98 protected: |
|
99 int tos; |
|
100 int stack_size; |
|
101 |
|
102 struct StackItem { |
|
103 int state; |
|
104 int ival; |
|
105 }; |
|
106 |
|
107 QVarLengthArray<StackItem> stack; |
|
108 unsigned in_tag: 1; |
|
109 QByteArray bytes; |
|
110 const char *bufptr; |
|
111 }; |
|
112 |
|
113 inline void XMLReader::reallocateStack() |
|
114 { |
|
115 if (! stack_size) |
|
116 stack_size = 128; |
|
117 else |
|
118 stack_size <<= 1; |
|
119 |
|
120 stack.resize (stack_size); |
|
121 } |
|
122 |
|
123 #endif // XMLREADER_H |
|
124 |
|
125 XMLReader::XMLReader(const QByteArray &bytes): |
|
126 tos(0), |
|
127 stack_size(0), |
|
128 bytes(bytes) |
|
129 { |
|
130 bufptr = bytes.constData(); |
|
131 } |
|
132 |
|
133 XMLReader::~XMLReader() |
|
134 { |
|
135 } |
|
136 |
|
137 bool XMLReader::parse() |
|
138 { |
|
139 const int INITIAL_STATE = 0; |
|
140 |
|
141 in_tag = 0; |
|
142 bufptr = bytes.constData(); |
|
143 |
|
144 int yytoken = -1; |
|
145 reallocateStack(); |
|
146 |
|
147 tos = 0; |
|
148 stack [++tos].state = INITIAL_STATE; |
|
149 |
|
150 while (true) |
|
151 { |
|
152 const int state = stack [tos].state; |
|
153 |
|
154 if (yytoken == -1 && - TERMINAL_COUNT != action_index [state]) |
|
155 yytoken = nextToken(); |
|
156 |
|
157 int act = t_action (state, yytoken); |
|
158 |
|
159 if (act == ACCEPT_STATE) |
|
160 return true; |
|
161 |
|
162 else if (act > 0) |
|
163 { |
|
164 if (++tos == stack_size) |
|
165 reallocateStack(); |
|
166 |
|
167 stack [tos].ival = *bufptr; // ### save the token value here |
|
168 stack [tos].state = act; |
|
169 yytoken = -1; |
|
170 } |
|
171 |
|
172 else if (act < 0) |
|
173 { |
|
174 int r = - act - 1; |
|
175 |
|
176 tos -= rhs [r]; |
|
177 act = stack [tos++].state; |
|
178 |
|
179 switch (r) { |
|
180 ./ |
|
181 |
|
182 |
|
183 |
|
184 |
|
185 XmlStream: TagOrWord ; |
|
186 XmlStream: XmlStream TagOrWord ; |
|
187 |
|
188 TagOrWord: Tag ; |
|
189 TagOrWord: ANY ; |
|
190 |
|
191 Tag: LEFT_ANGLE TagName RIGHT_ANGLE ; |
|
192 /. |
|
193 case $rule_number: { |
|
194 fprintf (stderr, "*** found a tag\n"); |
|
195 } break; |
|
196 ./ |
|
197 |
|
198 TagName: ANY ; |
|
199 TagName: TagName ANY ; |
|
200 |
|
201 |
|
202 /. |
|
203 } // switch |
|
204 |
|
205 stack [tos].state = nt_action (act, lhs [r] - TERMINAL_COUNT); |
|
206 } |
|
207 |
|
208 else |
|
209 { |
|
210 // ### ERROR RECOVERY HERE |
|
211 break; |
|
212 } |
|
213 } |
|
214 |
|
215 return false; |
|
216 } |
|
217 |
|
218 |
|
219 |
|
220 ///////////////////////////// |
|
221 // entry point |
|
222 ///////////////////////////// |
|
223 int main(int, char *argv[]) |
|
224 { |
|
225 QFile f (argv[1]); |
|
226 |
|
227 if (f.open(QFile::ReadOnly)) { |
|
228 QByteArray contents = f.readAll(); |
|
229 XMLReader parser (contents); |
|
230 |
|
231 if (parser.parse()) |
|
232 printf ("OK\n"); |
|
233 else |
|
234 printf ("KO\n"); |
|
235 } |
|
236 } |
|
237 |
|
238 |
|
239 |
|
240 |
|
241 ./ |
|
242 |