source: trunk/tools/linguist/lupdate/qdeclarative.cpp

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 15.7 KB
RevLine 
[844]1/****************************************************************************
2**
3** Copyright (C) 2011 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 Qt Linguist of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
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** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "lupdate.h"
43
44#include <translator.h>
45
46#include <QtCore/QDebug>
47#include <QtCore/QFile>
48#include <QtCore/QString>
49
50#include "parser/qdeclarativejsengine_p.h"
51#include "parser/qdeclarativejsparser_p.h"
52#include "parser/qdeclarativejslexer_p.h"
53#include "parser/qdeclarativejsnodepool_p.h"
54#include "parser/qdeclarativejsastvisitor_p.h"
55#include "parser/qdeclarativejsast_p.h"
56
57#include <QCoreApplication>
58#include <QFile>
59#include <QFileInfo>
60#include <QtDebug>
61#include <QStringList>
62
63#include <iostream>
64#include <cstdlib>
65
66QT_BEGIN_NAMESPACE
67
68class LU {
69 Q_DECLARE_TR_FUNCTIONS(LUpdate)
70};
71
72using namespace QDeclarativeJS;
73
74class Comment
75{
76public:
77 Comment() : lastLine(-1) {}
78 QString extracomment;
79 QString msgid;
80 TranslatorMessage::ExtraData extra;
81 QString sourcetext;
82 int lastLine;
83
84 bool isValid() const
85 { return !extracomment.isEmpty() || !msgid.isEmpty() || !sourcetext.isEmpty() || !extra.isEmpty(); }
86};
87
88class FindTrCalls: protected AST::Visitor
89{
90public:
91 void operator()(Translator *translator, const QString &fileName, AST::Node *node)
92 {
93 m_translator = translator;
94 m_fileName = fileName;
95 m_component = QFileInfo(fileName).baseName(); //matches qsTr usage in QScriptEngine
96 accept(node);
97 }
98
99 QList<Comment> comments;
100
101protected:
102 using AST::Visitor::visit;
103 using AST::Visitor::endVisit;
104
105 void accept(AST::Node *node)
106 { AST::Node::acceptChild(node, this); }
107
108 virtual void endVisit(AST::CallExpression *node)
109 {
110 m_bSource.clear();
111 if (AST::IdentifierExpression *idExpr = AST::cast<AST::IdentifierExpression *>(node->base)) {
112 if (idExpr->name->asString() == QLatin1String("qsTr") ||
113 idExpr->name->asString() == QLatin1String("QT_TR_NOOP")) {
114 if (!node->arguments)
115 return;
116 AST::BinaryExpression *binary = AST::cast<AST::BinaryExpression *>(node->arguments->expression);
117 if (binary) {
118 if (!createString(binary))
119 m_bSource.clear();
120 }
121 AST::StringLiteral *literal = AST::cast<AST::StringLiteral *>(node->arguments->expression);
122 if (literal || !m_bSource.isEmpty()) {
123 const QString source = literal ? literal->value->asString() : m_bSource;
124
125 QString comment;
126 bool plural = false;
127 AST::ArgumentList *commentNode = node->arguments->next;
128 if (commentNode && AST::cast<AST::StringLiteral *>(commentNode->expression)) {
129 literal = AST::cast<AST::StringLiteral *>(commentNode->expression);
130 comment = literal->value->asString();
131
132 AST::ArgumentList *nNode = commentNode->next;
133 if (nNode)
134 plural = true;
135 }
136
137 QString id;
138 QString extracomment;
139 TranslatorMessage::ExtraData extra;
140 Comment scomment = findComment(node->firstSourceLocation().startLine);
141 if (scomment.isValid()) {
142 extracomment = scomment.extracomment;
143 extra = scomment.extra;
144 id = scomment.msgid;
145 }
146
147 TranslatorMessage msg(m_component, source,
148 comment, QString(), m_fileName,
149 node->firstSourceLocation().startLine, QStringList(),
150 TranslatorMessage::Unfinished, plural);
151 msg.setExtraComment(extracomment.simplified());
152 msg.setId(id);
153 msg.setExtras(extra);
154 m_translator->extend(msg);
155 }
156 } else if (idExpr->name->asString() == QLatin1String("qsTranslate") ||
157 idExpr->name->asString() == QLatin1String("QT_TRANSLATE_NOOP")) {
158 if (node->arguments && AST::cast<AST::StringLiteral *>(node->arguments->expression)) {
159 AST::StringLiteral *literal = AST::cast<AST::StringLiteral *>(node->arguments->expression);
160 const QString context = literal->value->asString();
161
162 QString source;
163 QString comment;
164 bool plural = false;
165 AST::ArgumentList *sourceNode = node->arguments->next;
166 if (!sourceNode)
167 return;
168 literal = AST::cast<AST::StringLiteral *>(sourceNode->expression);
169 AST::BinaryExpression *binary = AST::cast<AST::BinaryExpression *>(sourceNode->expression);
170 if (binary) {
171 if (!createString(binary))
172 m_bSource.clear();
173 }
174 if (!literal && m_bSource.isEmpty())
175 return;
176
177 QString id;
178 QString extracomment;
179 TranslatorMessage::ExtraData extra;
180 Comment scomment = findComment(node->firstSourceLocation().startLine);
181 if (scomment.isValid()) {
182 extracomment = scomment.extracomment;
183 extra = scomment.extra;
184 id = scomment.msgid;
185 }
186
187 source = literal ? literal->value->asString() : m_bSource;
188 AST::ArgumentList *commentNode = sourceNode->next;
189 if (commentNode && AST::cast<AST::StringLiteral *>(commentNode->expression)) {
190 literal = AST::cast<AST::StringLiteral *>(commentNode->expression);
191 comment = literal->value->asString();
192
193 AST::ArgumentList *nNode = commentNode->next;
194 if (nNode)
195 plural = true;
196 }
197
198 TranslatorMessage msg(context, source,
199 comment, QString(), m_fileName,
200 node->firstSourceLocation().startLine, QStringList(),
201 TranslatorMessage::Unfinished, plural);
202 msg.setExtraComment(extracomment.simplified());
203 msg.setId(id);
204 msg.setExtras(extra);
205 m_translator->extend(msg);
206 }
207 } else if (idExpr->name->asString() == QLatin1String("qsTrId") ||
208 idExpr->name->asString() == QLatin1String("QT_TRID_NOOP")) {
209 if (!node->arguments)
210 return;
211
212 AST::StringLiteral *literal = AST::cast<AST::StringLiteral *>(node->arguments->expression);
213 if (literal) {
214
215 QString extracomment;
216 QString sourcetext;
217 TranslatorMessage::ExtraData extra;
218 Comment comment = findComment(node->firstSourceLocation().startLine);
219 if (comment.isValid()) {
220 extracomment = comment.extracomment;
221 sourcetext = comment.sourcetext;
222 extra = comment.extra;
223 }
224
225 const QString id = literal->value->asString();
226 bool plural = node->arguments->next;
227
228 TranslatorMessage msg(QString(), sourcetext,
229 QString(), QString(), m_fileName,
230 node->firstSourceLocation().startLine, QStringList(),
231 TranslatorMessage::Unfinished, plural);
232 msg.setExtraComment(extracomment.simplified());
233 msg.setId(id);
234 msg.setExtras(extra);
235 m_translator->extend(msg);
236 }
237 }
238 }
239 }
240
241private:
242 bool createString(AST::BinaryExpression *b)
243 {
244 if (!b || b->op != 0)
245 return false;
246 AST::BinaryExpression *l = AST::cast<AST::BinaryExpression *>(b->left);
247 AST::BinaryExpression *r = AST::cast<AST::BinaryExpression *>(b->right);
248 AST::StringLiteral *ls = AST::cast<AST::StringLiteral *>(b->left);
249 AST::StringLiteral *rs = AST::cast<AST::StringLiteral *>(b->right);
250 if ((!l && !ls) || (!r && !rs))
251 return false;
252 if (l) {
253 if (!createString(l))
254 return false;
255 } else
256 m_bSource.prepend(ls->value->asString());
257
258 if (r) {
259 if (!createString(r))
260 return false;
261 } else
262 m_bSource.append(rs->value->asString());
263
264 return true;
265 }
266
267 Comment findComment(int loc)
268 {
269 if (comments.isEmpty())
270 return Comment();
271
272 int i = 0;
273 int commentLoc = comments.at(i).lastLine;
274 while (commentLoc <= loc) {
275 if (commentLoc == loc)
276 return comments.at(i);
277 if (i == comments.count()-1)
278 break;
279 commentLoc = comments.at(++i).lastLine;
280 }
281 return Comment();
282 }
283
284 Translator *m_translator;
285 QString m_fileName;
286 QString m_component;
287 QString m_bSource;
288};
289
290QString createErrorString(const QString &filename, const QString &code, Parser &parser)
291{
292 // print out error
293 QStringList lines = code.split(QLatin1Char('\n'));
294 lines.append(QLatin1String("\n")); // sentinel.
295 QString errorString;
296
297 foreach (const DiagnosticMessage &m, parser.diagnosticMessages()) {
298
299 if (m.isWarning())
300 continue;
301
302 QString error = filename + QLatin1Char(':') + QString::number(m.loc.startLine)
303 + QLatin1Char(':') + QString::number(m.loc.startColumn) + QLatin1String(": error: ")
304 + m.message + QLatin1Char('\n');
305
306 int line = 0;
307 if (m.loc.startLine > 0)
308 line = m.loc.startLine - 1;
309
310 const QString textLine = lines.at(line);
311
312 error += textLine + QLatin1Char('\n');
313
314 int column = m.loc.startColumn - 1;
315 if (column < 0)
316 column = 0;
317
318 column = qMin(column, textLine.length());
319
320 for (int i = 0; i < column; ++i) {
321 const QChar ch = textLine.at(i);
322 if (ch.isSpace())
323 error += ch.unicode();
324 else
325 error += QLatin1Char(' ');
326 }
327 error += QLatin1String("^\n");
328 errorString += error;
329 }
330 return errorString;
331}
332
333bool processComment(const QChar *chars, int length, Comment &comment)
334{
335 // Try to match the logic of the QtScript parser.
336 if (!length)
337 return comment.isValid();
338 if (*chars == QLatin1Char(':') && chars[1].isSpace()) {
339 comment.extracomment += QString(chars+1, length-1);
340 } else if (*chars == QLatin1Char('=') && chars[1].isSpace()) {
341 comment.msgid = QString(chars+2, length-2).simplified();
342 } else if (*chars == QLatin1Char('~') && chars[1].isSpace()) {
343 QString text = QString(chars+2, length-2).trimmed();
344 int k = text.indexOf(QLatin1Char(' '));
345 if (k > -1)
346 comment.extra.insert(text.left(k), text.mid(k + 1).trimmed());
347 } else if (*chars == QLatin1Char('%') && chars[1].isSpace()) {
348 comment.sourcetext.reserve(comment.sourcetext.length() + length-2);
349 ushort *ptr = (ushort *)comment.sourcetext.data() + comment.sourcetext.length();
350 int p = 2, c;
351 forever {
352 if (p >= length)
353 break;
354 c = chars[p++].unicode();
355 if (isspace(c))
356 continue;
357 if (c != '"')
358 break;
359 forever {
360 if (p >= length)
361 break;
362 c = chars[p++].unicode();
363 if (c == '"')
364 break;
365 if (c == '\\') {
366 if (p >= length)
367 break;
368 c = chars[p++].unicode();
369 if (c == '\n')
370 break;
371 *ptr++ = '\\';
372 }
373 *ptr++ = c;
374 }
375 }
376 comment.sourcetext.resize(ptr - (ushort *)comment.sourcetext.data());
377 }
378 return comment.isValid();
379}
380
381bool loadQml(Translator &translator, const QString &filename, ConversionData &cd)
382{
383 cd.m_sourceFileName = filename;
384 QFile file(filename);
385 if (!file.open(QIODevice::ReadOnly)) {
386 cd.appendError(LU::tr("Cannot open %1: %2").arg(filename, file.errorString()));
387 return false;
388 }
389
390 const QString code = QTextStream(&file).readAll();
391
392 Engine driver;
393 Parser parser(&driver);
394
395 NodePool nodePool(filename, &driver);
396 driver.setNodePool(&nodePool);
397
398 Lexer lexer(&driver);
399 lexer.setCode(code, /*line = */ 1);
400 driver.setLexer(&lexer);
401
402 if (parser.parse()) {
403 FindTrCalls trCalls;
404
405 // build up a list of comments that contain translation information.
406 for (int i = 0; i < driver.comments().size(); ++i) {
407 AST::SourceLocation loc = driver.comments().at(i);
408 QString commentStr = code.mid(loc.offset, loc.length);
409
410 if (trCalls.comments.isEmpty() || trCalls.comments.last().lastLine != int(loc.startLine)) {
411 Comment comment;
412 comment.lastLine = loc.startLine+1;
413 if (processComment(commentStr.constData(), commentStr.length(), comment))
414 trCalls.comments.append(comment);
415 } else {
416 Comment &lastComment = trCalls.comments.last();
417 lastComment.lastLine += 1;
418 processComment(commentStr.constData(), commentStr.length(), lastComment);
419 }
420 }
421
422 //find all tr calls in the code
423 trCalls(&translator, filename, parser.ast());
424 } else {
425 QString error = createErrorString(filename, code, parser);
426 cd.appendError(error);
427 return false;
428 }
429 return true;
430}
431
432QT_END_NAMESPACE
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