cppeditor.cpp 34.9 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2
3
4
**
** This file is part of Qt Creator
**
5
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
7
8
**
** Contact:  Qt Software Information (qt-info@nokia.com)
**
9
** Commercial Usage
10
**
11
12
13
14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18
19
20
21
22
23
** 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.
24
**
25
26
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30
31
32
33
34
35
36
37
38
39
40
41
42
43
#include "cppeditor.h"
#include "cppeditorconstants.h"
#include "cppplugin.h"
#include "cpphighlighter.h"

#include <AST.h>
#include <Token.h>
#include <Scope.h>
#include <Symbols.h>
#include <Names.h>
#include <Control.h>
#include <CoreTypes.h>
#include <Literals.h>
#include <Semantic.h>
44
#include <SymbolVisitor.h>
con's avatar
con committed
45
46
47
48
49
#include <cplusplus/ExpressionUnderCursor.h>
#include <cplusplus/LookupContext.h>
#include <cplusplus/Overview.h>
#include <cplusplus/OverviewModel.h>
#include <cplusplus/SimpleLexer.h>
50
#include <cplusplus/TokenUnderCursor.h>
con's avatar
con committed
51
52
53
54
55
#include <cplusplus/TypeOfExpression.h>
#include <cpptools/cppmodelmanagerinterface.h>

#include <coreplugin/icore.h>
#include <coreplugin/uniqueidmanager.h>
56
#include <coreplugin/actionmanager/actionmanager.h>
con's avatar
con committed
57
58
#include <coreplugin/editormanager/ieditor.h>
#include <coreplugin/editormanager/editormanager.h>
59
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
60
61
62
63
64
65
66
67
68
69
70
#include <projectexplorer/projectexplorerconstants.h>
#include <texteditor/basetextdocument.h>
#include <texteditor/fontsettings.h>
#include <texteditor/texteditorconstants.h>
#include <texteditor/textblockiterator.h>
#include <indenter.h>

#include <QtCore/QDebug>
#include <QtCore/QTime>
#include <QtCore/QTimer>
#include <QtGui/QAction>
71
#include <QtGui/QHeaderView>
con's avatar
con committed
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
#include <QtGui/QLayout>
#include <QtGui/QMenu>
#include <QtGui/QShortcut>
#include <QtGui/QTextEdit>
#include <QtGui/QComboBox>
#include <QtGui/QTreeView>

using namespace CPlusPlus;
using namespace CppEditor::Internal;

namespace {

class OverviewTreeView : public QTreeView
{
public:
    OverviewTreeView(QWidget *parent = 0)
        : QTreeView(parent)
    {
        // TODO: Disable the root for all items (with a custom delegate?)
        setRootIsDecorated(false);
    }

    void sync()
    {
        expandAll();
        setMinimumWidth(qMax(sizeHintForColumn(0), minimumSizeHint().width()));
    }
};

101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
class FindFunctionDefinitions: protected SymbolVisitor
{
    Name *_declarationName;
    QList<Function *> *_functions;

public:
    FindFunctionDefinitions()
        : _declarationName(0),
          _functions(0)
    { }

    void operator()(Name *declarationName, Scope *globals,
                    QList<Function *> *functions)
    {
        _declarationName = declarationName;
        _functions = functions;

        for (unsigned i = 0; i < globals->symbolCount(); ++i) {
            accept(globals->symbolAt(i));
        }
    }

protected:
    using SymbolVisitor::visit;

    virtual bool visit(Function *function)
    {
        Name *name = function->name();
        if (QualifiedNameId *q = name->asQualifiedNameId())
            name = q->unqualifiedNameId();

        if (_declarationName->isEqualTo(name))
            _functions->append(function);

        return false;
    }
};

con's avatar
con committed
139
140
} // end of anonymous namespace

141
static QualifiedNameId *qualifiedNameIdForSymbol(Symbol *s, const LookupContext &context)
con's avatar
con committed
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
{
    Name *symbolName = s->name();
    if (! symbolName)
        return 0; // nothing to do.

    QVector<Name *> names;

    for (Scope *scope = s->scope(); scope; scope = scope->enclosingScope()) {
        if (scope->isClassScope() || scope->isNamespaceScope()) {
            if (scope->owner() && scope->owner()->name()) {
                Name *ownerName = scope->owner()->name();
                if (QualifiedNameId *q = ownerName->asQualifiedNameId()) {
                    for (unsigned i = 0; i < q->nameCount(); ++i) {
                        names.prepend(q->nameAt(i));
                    }
                } else {
                    names.prepend(ownerName);
                }
            }
        }
    }

    if (QualifiedNameId *q = symbolName->asQualifiedNameId()) {
        for (unsigned i = 0; i < q->nameCount(); ++i) {
            names.append(q->nameAt(i));
        }
    } else {
        names.append(symbolName);
    }

    return context.control()->qualifiedNameId(names.constData(), names.size());
}

CPPEditorEditable::CPPEditorEditable(CPPEditor *editor)
hjk's avatar
hjk committed
176
    : BaseTextEditorEditable(editor)
con's avatar
con committed
177
{
178
179
180
181
    Core::UniqueIDManager *uidm = Core::UniqueIDManager::instance();
    m_context << uidm->uniqueIdentifier(CppEditor::Constants::C_CPPEDITOR);
    m_context << uidm->uniqueIdentifier(ProjectExplorer::Constants::LANG_CXX);
    m_context << uidm->uniqueIdentifier(TextEditor::Constants::C_TEXTEDITOR);
con's avatar
con committed
182
183
}

184
185
CPPEditor::CPPEditor(QWidget *parent)
    : TextEditor::BaseTextEditor(parent)
186
    , m_showingLink(false)
con's avatar
con committed
187
188
189
{
    setParenthesesMatchingEnabled(true);
    setMarksVisible(true);
190
    setCodeFoldingSupported(true);
con's avatar
con committed
191
    setCodeFoldingVisible(true);
192
    baseTextDocument()->setSyntaxHighlighter(new CppHighlighter);
con's avatar
con committed
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207

#ifdef WITH_TOKEN_MOVE_POSITION
    new QShortcut(QKeySequence::MoveToPreviousWord, this, SLOT(moveToPreviousToken()),
                  /*ambiguousMember=*/ 0, Qt::WidgetShortcut);

    new QShortcut(QKeySequence::MoveToNextWord, this, SLOT(moveToNextToken()),
                  /*ambiguousMember=*/ 0, Qt::WidgetShortcut);

    new QShortcut(QKeySequence::DeleteStartOfWord, this, SLOT(deleteStartOfToken()),
                  /*ambiguousMember=*/ 0, Qt::WidgetShortcut);

    new QShortcut(QKeySequence::DeleteEndOfWord, this, SLOT(deleteEndOfToken()),
                  /*ambiguousMember=*/ 0, Qt::WidgetShortcut);
#endif

208
209
    m_modelManager = ExtensionSystem::PluginManager::instance()
        ->getObject<CppTools::CppModelManagerInterface>();
con's avatar
con committed
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232

    if (m_modelManager) {
        connect(m_modelManager, SIGNAL(documentUpdated(CPlusPlus::Document::Ptr)),
                this, SLOT(onDocumentUpdated(CPlusPlus::Document::Ptr)));
    }
}

CPPEditor::~CPPEditor()
{
}

TextEditor::BaseTextEditorEditable *CPPEditor::createEditableInterface()
{
    CPPEditorEditable *editable = new CPPEditorEditable(this);
    createToolBar(editable);
    return editable;
}

void CPPEditor::createToolBar(CPPEditorEditable *editable)
{
    m_methodCombo = new QComboBox;
    m_methodCombo->setMinimumContentsLength(22);
    m_methodCombo->setSizeAdjustPolicy(QComboBox::AdjustToContents);
233
234
235
236
237
238

    // Make the combo box prefer to expand
    QSizePolicy policy = m_methodCombo->sizePolicy();
    policy.setHorizontalPolicy(QSizePolicy::Expanding);
    m_methodCombo->setSizePolicy(policy);

239
    QTreeView *methodView = new OverviewTreeView;
con's avatar
con committed
240
241
242
243
244
245
    methodView->header()->hide();
    methodView->setItemsExpandable(false);
    m_methodCombo->setView(methodView);
    m_methodCombo->setMaxVisibleItems(20);

    m_overviewModel = new OverviewModel(this);
246
    m_methodCombo->setModel(m_overviewModel);
con's avatar
con committed
247
248
249

    connect(m_methodCombo, SIGNAL(activated(int)), this, SLOT(jumpToMethod(int)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateMethodBoxIndex()));
250
    connect(m_methodCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMethodBoxToolTip()));
con's avatar
con committed
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358

    connect(file(), SIGNAL(changed()), this, SLOT(updateFileName()));

    QToolBar *toolBar = editable->toolBar();
    QList<QAction*> actions = toolBar->actions();
    toolBar->insertWidget(actions.first(), m_methodCombo);
}

int CPPEditor::previousBlockState(QTextBlock block) const
{
    block = block.previous();
    if (block.isValid()) {
        int state = block.userState();

        if (state != -1)
            return state;
    }
    return 0;
}

QTextCursor CPPEditor::moveToPreviousToken(QTextCursor::MoveMode mode) const
{
    SimpleLexer tokenize;
    QTextCursor c(textCursor());
    QTextBlock block = c.block();
    int column = c.columnNumber();

    for (; block.isValid(); block = block.previous()) {
        const QString textBlock = block.text();
        QList<SimpleToken> tokens = tokenize(textBlock, previousBlockState(block));

        if (! tokens.isEmpty()) {
            tokens.prepend(SimpleToken());

            for (int index = tokens.size() - 1; index != -1; --index) {
                const SimpleToken &tk = tokens.at(index);
                if (tk.position() < column) {
                    c.setPosition(block.position() + tk.position(), mode);
                    return c;
                }
            }
        }

        column = INT_MAX;
    }

    c.movePosition(QTextCursor::Start, mode);
    return c;
}

QTextCursor CPPEditor::moveToNextToken(QTextCursor::MoveMode mode) const
{
    SimpleLexer tokenize;
    QTextCursor c(textCursor());
    QTextBlock block = c.block();
    int column = c.columnNumber();

    for (; block.isValid(); block = block.next()) {
        const QString textBlock = block.text();
        QList<SimpleToken> tokens = tokenize(textBlock, previousBlockState(block));

        if (! tokens.isEmpty()) {
            for (int index = 0; index < tokens.size(); ++index) {
                const SimpleToken &tk = tokens.at(index);
                if (tk.position() > column) {
                    c.setPosition(block.position() + tk.position(), mode);
                    return c;
                }
            }
        }

        column = -1;
    }

    c.movePosition(QTextCursor::End, mode);
    return c;
}

void CPPEditor::moveToPreviousToken()
{
    setTextCursor(moveToPreviousToken(QTextCursor::MoveAnchor));
}

void CPPEditor::moveToNextToken()
{
    setTextCursor(moveToNextToken(QTextCursor::MoveAnchor));
}

void CPPEditor::deleteStartOfToken()
{
    QTextCursor c = moveToPreviousToken(QTextCursor::KeepAnchor);
    c.removeSelectedText();
    setTextCursor(c);
}

void CPPEditor::deleteEndOfToken()
{
    QTextCursor c = moveToNextToken(QTextCursor::KeepAnchor);
    c.removeSelectedText();
    setTextCursor(c);
}

void CPPEditor::onDocumentUpdated(Document::Ptr doc)
{
    if (doc->fileName() != file()->fileName())
        return;

    m_overviewModel->rebuild(doc);
359
360
361
    OverviewTreeView *treeView = static_cast<OverviewTreeView *>(m_methodCombo->view());
    treeView->sync();
    updateMethodBoxIndex();
con's avatar
con committed
362
363
364
365
366
367
368
369
370
371
372
373
}

void CPPEditor::updateFileName()
{ }

void CPPEditor::jumpToMethod(int)
{
    QModelIndex index = m_methodCombo->view()->currentIndex();
    Symbol *symbol = m_overviewModel->symbolFromIndex(index);
    if (! symbol)
        return;

374
    openCppEditorAt(linkToSymbol(symbol));
con's avatar
con committed
375
376
377
378
379
380
381
382
383
}

void CPPEditor::updateMethodBoxIndex()
{
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    QModelIndex lastIndex;

384
    const int rc = m_overviewModel->rowCount();
con's avatar
con committed
385
386
387
    for (int row = 0; row < rc; ++row) {
        const QModelIndex index = m_overviewModel->index(row, 0, QModelIndex());
        Symbol *symbol = m_overviewModel->symbolFromIndex(index);
388
        if (symbol && symbol->line() > unsigned(line))
con's avatar
con committed
389
390
391
392
            break;
        lastIndex = index;
    }

393
394
    QList<QTextEdit::ExtraSelection> selections;

con's avatar
con committed
395
396
397
    if (lastIndex.isValid()) {
        bool blocked = m_methodCombo->blockSignals(true);
        m_methodCombo->setCurrentIndex(lastIndex.row());
398
        updateMethodBoxToolTip();
con's avatar
con committed
399
400
        (void) m_methodCombo->blockSignals(blocked);
    }
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416

#ifdef QTCREATOR_WITH_ADVANCED_HIGHLIGHTER
    Snapshot snapshot = m_modelManager->snapshot();
    Document::Ptr thisDocument = snapshot.value(file()->fileName());
    if (! thisDocument)
        return;

    if (Symbol *symbol = thisDocument->findSymbolAt(line, column)) {
        QTextCursor tc = textCursor();
        tc.movePosition(QTextCursor::EndOfWord);

        ExpressionUnderCursor expressionUnderCursor;

        const QString expression = expressionUnderCursor(tc);
        //qDebug() << "expression:" << expression;

417
418
419
        Snapshot snapshot;
        snapshot.insert(thisDocument->fileName(), thisDocument);

420
        TypeOfExpression typeOfExpression;
421
        typeOfExpression.setSnapshot(snapshot);
422
423
424
425
426
427
428
429
430
431
432
433
434

        const QList<TypeOfExpression::Result> results =
                typeOfExpression(expression, thisDocument, symbol, TypeOfExpression::Preprocess);

        LookupContext context = typeOfExpression.lookupContext();

        foreach (const TypeOfExpression::Result &result, results) {
            FullySpecifiedType ty = result.first;
            Symbol *symbol = result.second;

            if (file()->fileName() != symbol->fileName())
                continue;

435
436
437
            else if (symbol->isGenerated())
                continue;

Roberto Raggi's avatar
Roberto Raggi committed
438
439
440
            else if (symbol->isBlock())
                continue;

441
442
443
444
445
446
            if (symbol) {
                int column = symbol->column();

                if (column != 0)
                    --column;

447
448
449
                if (symbol->isGenerated())
                    column = 0;

450
451
                QTextCursor c(document()->findBlockByNumber(symbol->line() - 1));
                c.setPosition(c.position() + column);
452
453
454
455
456
457
458
459
460
461
462
463
464

                const QString text = c.block().text();

                int i = column;
                for (; i < text.length(); ++i) {
                    const QChar &ch = text.at(i);

                    if (ch == QLatin1Char('*') || ch == QLatin1Char('&'))
                        c.movePosition(QTextCursor::NextCharacter);
                    else
                        break;
                }

465
466
467
468
469
470
471
472
473
474
475
476
477
478
                c.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);

                QTextEdit::ExtraSelection sel;
                sel.cursor = c;
                sel.format.setBackground(Qt::darkYellow);

                selections.append(sel);
                //break;
            }
        }
    }

    setExtraSelections(CodeSemanticsSelection, selections);
#endif // QTCREATOR_WITH_ADVANCED_HIGHLIGHTER
con's avatar
con committed
479
480
}

481
482
483
484
485
void CPPEditor::updateMethodBoxToolTip()
{
    m_methodCombo->setToolTip(m_methodCombo->currentText());
}

con's avatar
con committed
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
static bool isCompatible(Name *name, Name *otherName)
{
    if (NameId *nameId = name->asNameId()) {
        if (TemplateNameId *otherTemplId = otherName->asTemplateNameId())
            return nameId->identifier()->isEqualTo(otherTemplId->identifier());
    } else if (TemplateNameId *templId = name->asTemplateNameId()) {
        if (NameId *otherNameId = otherName->asNameId())
            return templId->identifier()->isEqualTo(otherNameId->identifier());
    }

    return name->isEqualTo(otherName);
}

static bool isCompatible(Function *definition, Symbol *declaration, QualifiedNameId *declarationName)
{
501
    Function *declTy = declaration->type()->asFunctionType();
con's avatar
con committed
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
    if (! declTy)
        return false;

    Name *definitionName = definition->name();
    if (QualifiedNameId *q = definitionName->asQualifiedNameId()) {
        if (! isCompatible(q->unqualifiedNameId(), declaration->name()))
            return false;
        else if (q->nameCount() > declarationName->nameCount())
            return false;
        else if (declTy->argumentCount() != definition->argumentCount())
            return false;
        else if (declTy->isConst() != definition->isConst())
            return false;
        else if (declTy->isVolatile() != definition->isVolatile())
            return false;

        for (unsigned i = 0; i < definition->argumentCount(); ++i) {
            Symbol *arg = definition->argumentAt(i);
            Symbol *otherArg = declTy->argumentAt(i);
            if (! arg->type().isEqualTo(otherArg->type()))
                return false;
        }

        for (unsigned i = 0; i != q->nameCount(); ++i) {
            Name *n = q->nameAt(q->nameCount() - i - 1);
            Name *m = declarationName->nameAt(declarationName->nameCount() - i - 1);
            if (! isCompatible(n, m))
                return false;
        }
        return true;
    } else {
        // ### TODO: implement isCompatible for unqualified name ids.
    }
    return false;
}

void CPPEditor::switchDeclarationDefinition()
{
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    if (!m_modelManager)
        return;

546
547
548
    const Snapshot snapshot = m_modelManager->snapshot();

    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
549
550
551
552
553
554
555
    if (!doc)
        return;
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol || !lastSymbol->scope())
        return;

    Function *f = lastSymbol->asFunction();
556
    if (!f) {
con's avatar
con committed
557
        Scope *fs = lastSymbol->scope();
558
        if (!fs->isFunctionScope())
con's avatar
con committed
559
560
561
562
563
564
565
            fs = fs->enclosingFunctionScope();
        if (fs)
            f = fs->owner()->asFunction();
    }

    if (f) {
        TypeOfExpression typeOfExpression;
566
        typeOfExpression.setSnapshot(m_modelManager->snapshot());
con's avatar
con committed
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
        QList<TypeOfExpression::Result> resolvedSymbols = typeOfExpression(QString(), doc, lastSymbol);
        const LookupContext &context = typeOfExpression.lookupContext();

        QualifiedNameId *q = qualifiedNameIdForSymbol(f, context);
        QList<Symbol *> symbols = context.resolve(q);

        Symbol *declaration = 0;
        foreach (declaration, symbols) {
            if (isCompatible(f, declaration, q))
                break;
        }

        if (! declaration && ! symbols.isEmpty())
            declaration = symbols.first();

        if (declaration)
583
            openCppEditorAt(linkToSymbol(declaration));
584
    } else if (lastSymbol->type()->isFunctionType()) {
con's avatar
con committed
585
        if (Symbol *def = findDefinition(lastSymbol))
586
            openCppEditorAt(linkToSymbol(def));
con's avatar
con committed
587
588
589
    }
}

590
591
CPPEditor::Link CPPEditor::findLinkAt(const QTextCursor &cursor,
                                      bool lookupDefinition)
con's avatar
con committed
592
{
593
    Link link;
594

con's avatar
con committed
595
    if (!m_modelManager)
596
        return link;
con's avatar
con committed
597

598
    const Snapshot snapshot = m_modelManager->snapshot();
con's avatar
con committed
599
    int line = 0, column = 0;
600
    convertPosition(cursor.position(), &line, &column);
601
    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
602
    if (!doc)
603
        return link;
604

605
606
    // Handle include directives
    const unsigned lineno = cursor.blockNumber() + 1;
607
    foreach (const Document::Include &incl, doc->includes()) {
608
        if (incl.line() == lineno && incl.resolved()) {
609
610
611
612
            link.fileName = incl.fileName();
            link.pos = cursor.block().position();
            link.length = cursor.block().length();
            return link;
613
614
615
        }
    }

616
    // Find the last symbol up to the cursor position
con's avatar
con committed
617
618
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol)
619
        return link;
con's avatar
con committed
620

621
    QTextCursor tc = cursor;
622

623
    static TokenUnderCursor tokenUnderCursor;
624
625
626
627
628
629
630
631
632
633
634
635
636

    QTextBlock block;
    const SimpleToken tk = tokenUnderCursor(tc, &block);

    if (tk.isNot(T_IDENTIFIER))
        return link;

    const int nameStart = tk.position();
    const int nameLength = tk.length();
    const int endOfName = nameStart + nameLength;

    const QString name = block.text().mid(nameStart, nameLength);
    tc.setPosition(block.position() + endOfName);
637
638

    // Evaluate the type of the expression under the cursor
con's avatar
con committed
639
640
641
    ExpressionUnderCursor expressionUnderCursor;
    const QString expression = expressionUnderCursor(tc);
    TypeOfExpression typeOfExpression;
642
    typeOfExpression.setSnapshot(snapshot);
con's avatar
con committed
643
644
645
646
    QList<TypeOfExpression::Result> resolvedSymbols =
            typeOfExpression(expression, doc, lastSymbol);

    if (!resolvedSymbols.isEmpty()) {
647
648
649
650
651
652
653
654
655
656
657
658
659
660
        TypeOfExpression::Result result = resolvedSymbols.first();

        if (result.first->isForwardClassDeclarationType()) {
            while (! resolvedSymbols.isEmpty()) {
                TypeOfExpression::Result r = resolvedSymbols.takeFirst();

                if (! r.first->isForwardClassDeclarationType()) {
                    result = r;
                    break;
                }
            }
        }

        if (Symbol *symbol = result.second) {
con's avatar
con committed
661
            Symbol *def = 0;
662
            if (lookupDefinition && !lastSymbol->isFunction())
con's avatar
con committed
663
664
                def = findDefinition(symbol);

665
            link = linkToSymbol(def ? def : symbol);
666
            link.pos = block.position() + nameStart;
667
668
            link.length = nameLength;
            return link;
con's avatar
con committed
669
670
671
672
673
674
675

        // This would jump to the type of a name
#if 0
        } else if (NamedType *namedType = firstType->asNamedType()) {
            QList<Symbol *> candidates = context.resolve(namedType->name());
            if (!candidates.isEmpty()) {
                Symbol *s = candidates.takeFirst();
676
                openCppEditorAt(s->fileName(), s->line(), s->column());
con's avatar
con committed
677
678
679
680
            }
#endif
        }
    } else {
681
        // Handle macro uses
Roberto Raggi's avatar
Roberto Raggi committed
682
683
684
        foreach (const Document::MacroUse use, doc->macroUses()) {
            if (use.contains(endOfName - 1)) {
                const Macro &macro = use.macro();
685
686
687
688
689
                link.fileName = QString::fromUtf8(macro.fileName());
                link.line = macro.line();
                link.pos = use.begin();
                link.length = use.end() - use.begin();
                return link;
Roberto Raggi's avatar
Roberto Raggi committed
690
691
            }
        }
con's avatar
con committed
692
    }
693

694
    return link;
695
696
697
698
}

void CPPEditor::jumpToDefinition()
{
699
    openCppEditorAt(findLinkAt(textCursor()));
con's avatar
con committed
700
701
}

702
Symbol *CPPEditor::findDefinition(Symbol *symbol)
con's avatar
con committed
703
{
704
705
    if (symbol->isFunction())
        return 0; // symbol is a function definition.
con's avatar
con committed
706

707
    Function *funTy = symbol->type()->asFunctionType();
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
    if (! funTy)
        return 0; // symbol does not have function type.

    Name *name = symbol->name();
    if (! name)
        return 0; // skip anonymous functions!

    if (QualifiedNameId *q = name->asQualifiedNameId())
        name = q->unqualifiedNameId();

    // map from file names to function definitions.
    QMap<QString, QList<Function *> > functionDefinitions;

    // find function definitions.
    FindFunctionDefinitions findFunctionDefinitions;

    // save the current snapshot
    const Snapshot snapshot = m_modelManager->snapshot();

    foreach (Document::Ptr doc, snapshot) {
        if (Scope *globals = doc->globalSymbols()) {
            QList<Function *> *localFunctionDefinitions =
                    &functionDefinitions[doc->fileName()];

            findFunctionDefinitions(name, globals,
                                    localFunctionDefinitions);
con's avatar
con committed
734
735
736
        }
    }

737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
    // a dummy document.
    Document::Ptr expressionDocument = Document::create("<empty>");

    QMapIterator<QString, QList<Function *> > it(functionDefinitions);
    while (it.hasNext()) {
        it.next();

        // get the instance of the document.
        Document::Ptr thisDocument = snapshot.value(it.key());

        foreach (Function *f, it.value()) {
            // create a lookup context
            const LookupContext context(f, expressionDocument,
                                        thisDocument, snapshot);

            // search the matching definition for the function declaration `symbol'.
            foreach (Symbol *s, context.resolve(f->name())) {
                if (s == symbol)
                    return f;
con's avatar
con committed
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
            }
        }
    }

    return 0;
}

bool CPPEditor::isElectricCharacter(const QChar &ch) const
{
    if (ch == QLatin1Char('{') ||
        ch == QLatin1Char('}') ||
        ch == QLatin1Char('#')) {
        return true;
    }
    return false;
}

// Indent a code line based on previous
template <class Iterator>
static void indentCPPBlock(const CPPEditor::TabSettings &ts,
                           const QTextBlock &block,
                           const Iterator &programBegin,
                           const Iterator &programEnd,
                           QChar typedChar)
{
    typedef typename SharedTools::Indenter<Iterator> Indenter;
    Indenter &indenter = Indenter::instance();
    indenter.setIndentSize(ts.m_indentSize);
    indenter.setTabSize(ts.m_tabSize);

    const TextEditor::TextBlockIterator current(block);
    const int indent = indenter.indentForBottomLine(current, programBegin, programEnd, typedChar);
    ts.indentLine(block, indent);
}

void CPPEditor::indentBlock(QTextDocument *doc, QTextBlock block, QChar typedChar)
{
    const TextEditor::TextBlockIterator begin(doc->begin());
    const TextEditor::TextBlockIterator end(block.next());

    indentCPPBlock(tabSettings(), block, begin, end, typedChar);
}

void CPPEditor::contextMenuEvent(QContextMenuEvent *e)
{
    QMenu *menu = createStandardContextMenu();

    // Remove insert unicode control character
    QAction *lastAction = menu->actions().last();
    if (lastAction->menu() && QLatin1String(lastAction->menu()->metaObject()->className()) == QLatin1String("QUnicodeControlCharacterMenu"))
        menu->removeAction(lastAction);

808
    Core::ActionContainer *mcontext =
809
        Core::ICore::instance()->actionManager()->actionContainer(CppEditor::Constants::M_CONTEXT);
con's avatar
con committed
810
811
812
813
814
815
816
817
818
    QMenu *contextMenu = mcontext->menu();

    foreach (QAction *action, contextMenu->actions())
        menu->addAction(action);

    menu->exec(e->globalPos());
    delete menu;
}

819
820
void CPPEditor::mouseMoveEvent(QMouseEvent *e)
{
821
    bool linkFound = false;
822
823
824
825
826

    if (e->modifiers() & Qt::ControlModifier) {
        // Link emulation behaviour for 'go to definition'
        const QTextCursor cursor = cursorForPosition(e->pos());

827
828
829
830
831
832
833
834
        // Check that the mouse was actually on the text somewhere
        bool onText = cursorRect(cursor).right() >= e->x();
        if (!onText) {
            QTextCursor nextPos = cursor;
            nextPos.movePosition(QTextCursor::Right);
            onText = cursorRect(nextPos).right() >= e->x();
        }

835
        const Link link = findLinkAt(cursor, false);
836
837

        if (onText && !link.fileName.isEmpty()) {
838
839
            showLink(link);
            linkFound = true;
840
841
842
        }
    }

843
844
    if (!linkFound)
        clearLink();
845
846
847
848
849
850
851
852
853
854

    TextEditor::BaseTextEditor::mouseMoveEvent(e);
}

void CPPEditor::mouseReleaseEvent(QMouseEvent *e)
{
    if (e->modifiers() & Qt::ControlModifier && !(e->modifiers() & Qt::ShiftModifier)
        && e->button() == Qt::LeftButton) {

        const QTextCursor cursor = cursorForPosition(e->pos());
855
        if (openCppEditorAt(findLinkAt(cursor))) {
856
            clearLink();
857
858
859
860
861
862
863
864
            e->accept();
            return;
        }
    }

    TextEditor::BaseTextEditor::mouseReleaseEvent(e);
}

865
866
867
868
869
870
void CPPEditor::leaveEvent(QEvent *e)
{
    clearLink();
    TextEditor::BaseTextEditor::leaveEvent(e);
}

871
872
873
void CPPEditor::keyReleaseEvent(QKeyEvent *e)
{
    // Clear link emulation when Ctrl is released
874
875
    if (e->key() == Qt::Key_Control)
        clearLink();
876
877

    TextEditor::BaseTextEditor::keyReleaseEvent(e);
878
879
}

880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
void CPPEditor::showLink(const Link &link)
{
    QTextEdit::ExtraSelection sel;
    sel.cursor = textCursor();
    sel.cursor.setPosition(link.pos);
    sel.cursor.setPosition(link.pos + link.length, QTextCursor::KeepAnchor);
    sel.format = m_linkFormat;
    sel.format.setFontUnderline(true);
    setExtraSelections(OtherSelection, QList<QTextEdit::ExtraSelection>() << sel);
    viewport()->setCursor(Qt::PointingHandCursor);
    m_showingLink = true;
}

void CPPEditor::clearLink()
{
    if (!m_showingLink)
        return;

    setExtraSelections(OtherSelection, QList<QTextEdit::ExtraSelection>());
    viewport()->setCursor(Qt::IBeamCursor);
    m_showingLink = false;
}

con's avatar
con committed
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
QList<int> CPPEditorEditable::context() const
{
    return m_context;
}

Core::IEditor *CPPEditorEditable::duplicate(QWidget *parent)
{
    CPPEditor *newEditor = new CPPEditor(parent);
    newEditor->duplicateFrom(editor());
    CppPlugin::instance()->initializeEditor(newEditor);
    return newEditor->editableInterface();
}

const char *CPPEditorEditable::kind() const
{
    return CppEditor::Constants::CPPEDITOR_KIND;
}

void CPPEditor::setFontSettings(const TextEditor::FontSettings &fs)
{
    TextEditor::BaseTextEditor::setFontSettings(fs);
924
    CppHighlighter *highlighter = qobject_cast<CppHighlighter*>(baseTextDocument()->syntaxHighlighter());
con's avatar
con committed
925
926
927
928
929
930
931
932
933
934
935
936
    if (!highlighter)
        return;

    static QVector<QString> categories;
    if (categories.isEmpty()) {
        categories << QLatin1String(TextEditor::Constants::C_NUMBER)
                   << QLatin1String(TextEditor::Constants::C_STRING)
                   << QLatin1String(TextEditor::Constants::C_TYPE)
                   << QLatin1String(TextEditor::Constants::C_KEYWORD)
                   << QLatin1String(TextEditor::Constants::C_OPERATOR)
                   << QLatin1String(TextEditor::Constants::C_PREPROCESSOR)
                   << QLatin1String(TextEditor::Constants::C_LABEL)
Roberto Raggi's avatar
Roberto Raggi committed
937
938
939
                   << QLatin1String(TextEditor::Constants::C_COMMENT)
                   << QLatin1String(TextEditor::Constants::C_DOXYGEN_COMMENT)
                   << QLatin1String(TextEditor::Constants::C_DOXYGEN_TAG);
con's avatar
con committed
940
941
942
943
944
    }

    const QVector<QTextCharFormat> formats = fs.toTextCharFormats(categories);
    highlighter->setFormats(formats.constBegin(), formats.constEnd());
    highlighter->rehighlight();
945
946

    m_linkFormat = fs.toTextCharFormat(QLatin1String(TextEditor::Constants::C_LINK));
con's avatar
con committed
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
}


void CPPEditor::unCommentSelection()
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();

    int pos = cursor.position();
    int anchor = cursor.anchor();
    int start = qMin(anchor, pos);
    int end = qMax(anchor, pos);
    bool anchorIsStart = (anchor == start);

    QTextBlock startBlock = document()->findBlock(start);
    QTextBlock endBlock = document()->findBlock(end);

    if (end > start && endBlock.position() == end) {
        --end;
        endBlock = endBlock.previous();
    }

    bool doCStyleUncomment = false;
    bool doCStyleComment = false;
    bool doCppStyleUncomment = false;

    bool hasSelection = cursor.hasSelection();

    if (hasSelection) {
        QString startText = startBlock.text();
        int startPos = start - startBlock.position();
        bool hasLeadingCharacters = !startText.left(startPos).trimmed().isEmpty();
        if ((startPos >= 2
            && startText.at(startPos-2) == QLatin1Char('/')
             && startText.at(startPos-1) == QLatin1Char('*'))) {
            startPos -= 2;
            start -= 2;
        }

        bool hasSelStart = (startPos < startText.length() - 2
                            && startText.at(startPos) == QLatin1Char('/')
                            && startText.at(startPos+1) == QLatin1Char('*'));


        QString endText = endBlock.text();
        int endPos = end - endBlock.position();
993
994
        bool hasTrailingCharacters = !endText.left(endPos).remove(QLatin1String("//")).trimmed().isEmpty()
                                     && !endText.mid(endPos).trimmed().isEmpty();
con's avatar
con committed
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
        if ((endPos <= endText.length() - 2
            && endText.at(endPos) == QLatin1Char('*')
             && endText.at(endPos+1) == QLatin1Char('/'))) {
            endPos += 2;
            end += 2;
        }

        bool hasSelEnd = (endPos >= 2
                          && endText.at(endPos-2) == QLatin1Char('*')
                          && endText.at(endPos-1) == QLatin1Char('/'));

        doCStyleUncomment = hasSelStart && hasSelEnd;
        doCStyleComment = !doCStyleUncomment && (hasLeadingCharacters || hasTrailingCharacters);
    }

    if (doCStyleUncomment) {
        cursor.setPosition(end);
        cursor.movePosition(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor, 2);
        cursor.removeSelectedText();
        cursor.setPosition(start);
        cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, 2);
        cursor.removeSelectedText();
    } else if (doCStyleComment) {
        cursor.setPosition(end);
        cursor.insertText(QLatin1String("*/"));
        cursor.setPosition(start);
        cursor.insertText(QLatin1String("/*"));
    } else {
        endBlock = endBlock.next();
        doCppStyleUncomment = true;
        for (QTextBlock block = startBlock; block != endBlock; block = block.next()) {
            QString text = block.text();
            if (!text.trimmed().startsWith(QLatin1String("//"))) {
                doCppStyleUncomment = false;
                break;
            }
        }
        for (QTextBlock block = startBlock; block != endBlock; block = block.next()) {
            if (doCppStyleUncomment) {
                QString text = block.text();
                int i = 0;
                while (i < text.size() - 1) {
                    if (text.at(i) == QLatin1Char('/')
                        && text.at(i + 1) == QLatin1Char('/')) {
                        cursor.setPosition(block.position() + i);
                        cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, 2);
                        cursor.removeSelectedText();
                        break;
                    }
                    if (!text.at(i).isSpace())
                        break;
                    ++i;
                }
            } else {
                cursor.setPosition(block.position());
                cursor.insertText(QLatin1String("//"));
            }
        }
    }

    // adjust selection when commenting out
    if (hasSelection && !doCStyleUncomment && !doCppStyleUncomment) {
        cursor = textCursor();
        if (!doCStyleComment)
            start = startBlock.position(); // move the double slashes into the selection
        int lastSelPos = anchorIsStart ? cursor.position() : cursor.anchor();
        if (anchorIsStart) {
            cursor.setPosition(start);
            cursor.setPosition(lastSelPos, QTextCursor::KeepAnchor);
        } else {
            cursor.setPosition(lastSelPos);
            cursor.setPosition(start, QTextCursor::KeepAnchor);
        }
        setTextCursor(cursor);
    }

    cursor.endEditBlock();
}

1074
int CPPEditor::endOfNameAtPosition(int pos)
con's avatar
con committed
1075
{
1076
1077
1078
    if (pos == -1)
        pos = position();

con's avatar
con committed
1079
1080
1081
1082
1083
1084
1085
1086
1087
    QChar chr = characterAt(pos);

    // Skip to the start of a name
    while (chr.isLetterOrNumber() || chr == QLatin1Char('_'))
        chr = characterAt(++pos);

    return pos;
}

1088
CPPEditor::Link CPPEditor::linkToSymbol(CPlusPlus::Symbol *symbol)
1089
{
1090
1091
1092
1093
    const QString fileName = QString::fromUtf8(symbol->fileName(),
                                               symbol->fileNameLength());
    unsigned line = symbol->line();
    unsigned column = symbol->column();
1094

1095
1096
    if (column)
        --column;
1097

1098
    if (symbol->isGenerated())
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
1099
        column = 0;
1100

1101
    return Link(fileName, line, column);
1102
1103
}

1104
bool CPPEditor::openCppEditorAt(const Link &link)
1105
{
1106
    if (link.fileName.isEmpty())
1107
1108
        return false;

1109
    if (baseTextDocument()->fileName() == link.fileName) {
1110
1111
        Core::EditorManager *editorManager = Core::EditorManager::instance();
        editorManager->addCurrentPositionToNavigationHistory();
1112
        gotoLine(link.line, link.column);
1113
1114
1115
1116
        setFocus();
        return true;
    }

1117
1118
1119
    return TextEditor::BaseTextEditor::openEditorAt(link.fileName,
                                                    link.line,
                                                    link.column,
1120
                                                    Constants::C_CPPEDITOR);
con's avatar
con committed
1121
}