cppeditor.cpp 37 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
#include "cppeditor.h"
#include "cppeditorconstants.h"
#include "cppplugin.h"
#include "cpphighlighter.h"

#include <AST.h>
36
#include <Control.h>
con's avatar
con committed
37 38 39 40 41 42 43
#include <Token.h>
#include <Scope.h>
#include <Symbols.h>
#include <Names.h>
#include <Control.h>
#include <CoreTypes.h>
#include <Literals.h>
44
#include <PrettyPrinter.h>
con's avatar
con committed
45
#include <Semantic.h>
46
#include <SymbolVisitor.h>
47
#include <TranslationUnit.h>
con's avatar
con committed
48 49 50 51 52
#include <cplusplus/ExpressionUnderCursor.h>
#include <cplusplus/LookupContext.h>
#include <cplusplus/Overview.h>
#include <cplusplus/OverviewModel.h>
#include <cplusplus/SimpleLexer.h>
53
#include <cplusplus/TokenUnderCursor.h>
con's avatar
con committed
54 55 56 57 58
#include <cplusplus/TypeOfExpression.h>
#include <cpptools/cppmodelmanagerinterface.h>

#include <coreplugin/icore.h>
#include <coreplugin/uniqueidmanager.h>
59
#include <coreplugin/actionmanager/actionmanager.h>
con's avatar
con committed
60 61
#include <coreplugin/editormanager/ieditor.h>
#include <coreplugin/editormanager/editormanager.h>
62
#include <utils/uncommentselection.h>
63
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
64 65 66 67 68 69 70 71 72 73 74
#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>
75
#include <QtGui/QHeaderView>
con's avatar
con committed
76 77 78 79 80 81
#include <QtGui/QLayout>
#include <QtGui/QMenu>
#include <QtGui/QShortcut>
#include <QtGui/QTextEdit>
#include <QtGui/QComboBox>
#include <QtGui/QTreeView>
82
#include <QtGui/QSortFilterProxyModel>
con's avatar
con committed
83

84 85
#include <sstream>

con's avatar
con committed
86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
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()));
    }
};

108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145
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;
    }
};

146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250
class SimplifyDeclarations: protected ASTVisitor
{
    CPPEditor *_editor;
    Document::Ptr _doc;
    QByteArray _source;
    QTextCursor _textCursor;
    unsigned _line;
    unsigned _column;

public:
    SimplifyDeclarations(CPPEditor *ed, Document::Ptr doc)
        : ASTVisitor(doc->control()), _editor(ed),
          _doc(doc), _source(doc->source())
    { }

    void operator()(QTextCursor tc)
    {
        _textCursor = tc;

        _line = _textCursor.blockNumber() + 1;
        _column = _textCursor.columnNumber() + 1;

        accept(_doc->translationUnit()->ast());
    }

protected:
    QByteArray text(unsigned firstToken, unsigned lastToken) const
    {
        const unsigned begin = tokenAt(firstToken).begin();
        const unsigned end = tokenAt(lastToken - 1).end();
        return _source.mid(begin, end - begin);
    }

    virtual bool visit(SimpleDeclarationAST *ast)
    {
        if (! ast->decl_specifier_seq) {
            // e.g a ctor/dtor or a cast-function-id.
            return true;
        } if (! ast->declarators) {
            // e.g.
            // struct foo { int a; };
            return true;
        } else if (! ast->declarators->next) {
            // e.g.
            // int a;
            return true;
        }

        unsigned startLine, startColumn;
        unsigned endLine, endColumn;

        getTokenStartPosition(ast->firstToken(), &startLine, &startColumn);
        getTokenEndPosition(ast->lastToken() - 1, &endLine, &endColumn);

        if (_line < startLine || (_line == startLine && _column < startColumn))
            return true;
        else if (_line > endLine || (_line == endLine && _column >= endColumn))
            return true;

        unsigned beginOfDeclSpecifiers = ast->decl_specifier_seq->firstToken();
        unsigned endOfDeclSpecifiers = 0;

        for (SpecifierAST *spec = ast->decl_specifier_seq; spec; spec = spec->next) {
            if (spec->asClassSpecifier() != 0) {
                // e.g.
                // struct foo { int a; } x, y, z;
                return true;
            } else if (! spec->next)
                endOfDeclSpecifiers = spec->lastToken();
        }

        const QByteArray declSpecifiers =
                text(beginOfDeclSpecifiers, endOfDeclSpecifiers);

        QByteArray code;
        for (DeclaratorListAST *it = ast->declarators; it; it = it->next) {
            DeclaratorAST *decl = it->declarator;

            const QByteArray declaratorText = text(decl->firstToken(), decl->lastToken());
            code += declSpecifiers;
            code += ' ';
            code += declaratorText;
            code += ';';
            code += '\n';
        }

        const QString refactoredCode = QString::fromUtf8(code);

        QTextCursor tc = _textCursor;
        tc.beginEditBlock();
        tc.setPosition(tc.document()->findBlockByNumber(startLine - 1).position() + startColumn - 1);
        int startPos = tc.position();
        tc.setPosition(tc.document()->findBlockByNumber(endLine - 1).position() + endColumn - 1,
                       QTextCursor::KeepAnchor);
        tc.removeSelectedText();
        tc.insertText(refactoredCode);
        tc.setPosition(startPos);
        tc.setPosition(tc.position() + refactoredCode.length(), QTextCursor::KeepAnchor);
        _editor->indentInsertedText(tc);
        tc.endEditBlock();

        return true;
    }
};

con's avatar
con committed
251 252
} // end of anonymous namespace

253
static QualifiedNameId *qualifiedNameIdForSymbol(Symbol *s, const LookupContext &context)
con's avatar
con committed
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
{
    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
288
    : BaseTextEditorEditable(editor)
con's avatar
con committed
289
{
290 291 292 293
    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
294 295
}

296 297
CPPEditor::CPPEditor(QWidget *parent)
    : TextEditor::BaseTextEditor(parent)
298
    , m_mouseNavigationEnabled(true)
299
    , m_showingLink(false)
con's avatar
con committed
300 301 302
{
    setParenthesesMatchingEnabled(true);
    setMarksVisible(true);
303
    setCodeFoldingSupported(true);
con's avatar
con committed
304
    setCodeFoldingVisible(true);
305
    baseTextDocument()->setSyntaxHighlighter(new CppHighlighter);
con's avatar
con committed
306 307 308 309 310 311 312 313 314 315 316 317 318 319 320

#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

321 322
    m_modelManager = ExtensionSystem::PluginManager::instance()
        ->getObject<CppTools::CppModelManagerInterface>();
con's avatar
con committed
323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344

    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);
345 346 347 348 349 350

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

351
    QTreeView *methodView = new OverviewTreeView;
con's avatar
con committed
352 353 354 355 356 357
    methodView->header()->hide();
    methodView->setItemsExpandable(false);
    m_methodCombo->setView(methodView);
    m_methodCombo->setMaxVisibleItems(20);

    m_overviewModel = new OverviewModel(this);
358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373
    m_proxyModel = new QSortFilterProxyModel(this);
    m_proxyModel->setSourceModel(m_overviewModel);
    if (CppPlugin::instance()->sortedMethodOverview())
        m_proxyModel->sort(0, Qt::AscendingOrder);
    else
        m_proxyModel->sort(-1, Qt::AscendingOrder); // don't sort yet, but set column for sortedMethodOverview()
    m_proxyModel->setDynamicSortFilter(true);
    m_proxyModel->setSortCaseSensitivity(Qt::CaseInsensitive);
    m_methodCombo->setModel(m_proxyModel);

    m_methodCombo->setContextMenuPolicy(Qt::ActionsContextMenu);
    m_sortAction = new QAction(tr("Sort alphabetically"), m_methodCombo);
    m_sortAction->setCheckable(true);
    m_sortAction->setChecked(sortedMethodOverview());
    connect(m_sortAction, SIGNAL(toggled(bool)), CppPlugin::instance(), SLOT(setSortedMethodOverview(bool)));
    m_methodCombo->addAction(m_sortAction);
con's avatar
con committed
374 375 376

    connect(m_methodCombo, SIGNAL(activated(int)), this, SLOT(jumpToMethod(int)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateMethodBoxIndex()));
377
    connect(m_methodCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMethodBoxToolTip()));
con's avatar
con committed
378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485

    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);
486 487 488
    OverviewTreeView *treeView = static_cast<OverviewTreeView *>(m_methodCombo->view());
    treeView->sync();
    updateMethodBoxIndex();
con's avatar
con committed
489 490
}

491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518
void CPPEditor::reformatDocument()
{
    using namespace CPlusPlus;

    QByteArray source = toPlainText().toUtf8();

    Control control;
    StringLiteral *fileId = control.findOrInsertFileName("<file>");
    TranslationUnit unit(&control, fileId);
    unit.setQtMocRunEnabled(true);
    unit.setSource(source.constData(), source.length());
    unit.parse();
    if (! unit.ast())
        return;

    std::ostringstream s;

    TranslationUnitAST *ast = unit.ast()->asTranslationUnit();
    PrettyPrinter pp(&control, s);
    pp(ast, source);

    const std::string str = s.str();
    QTextCursor c = textCursor();
    c.setPosition(0);
    c.movePosition(QTextCursor::End, QTextCursor::KeepAnchor);
    c.insertText(QString::fromUtf8(str.c_str(), str.length()));
}

519 520 521 522 523 524 525 526 527 528 529 530
void CPPEditor::simplifyDeclarations()
{
    Snapshot snapshot = m_modelManager->snapshot();
    const QByteArray plainText = toPlainText().toUtf8();
    const QString fileName = file()->fileName();
    const QByteArray preprocessedCode = snapshot.preprocessedCode(plainText, fileName);
    Document::Ptr doc = snapshot.documentFromSource(preprocessedCode, fileName);

    SimplifyDeclarations simplify(this, doc);
    simplify(textCursor());
}

con's avatar
con committed
531 532 533 534 535
void CPPEditor::updateFileName()
{ }

void CPPEditor::jumpToMethod(int)
{
536
    QModelIndex index = m_proxyModel->mapToSource(m_methodCombo->view()->currentIndex());
con's avatar
con committed
537 538 539 540
    Symbol *symbol = m_overviewModel->symbolFromIndex(index);
    if (! symbol)
        return;

541
    openCppEditorAt(linkToSymbol(symbol));
con's avatar
con committed
542 543
}

544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562
void CPPEditor::setSortedMethodOverview(bool sort)
{
    if (sort != sortedMethodOverview()) {
        if (sort)
            m_proxyModel->sort(0, Qt::AscendingOrder);
        else
            m_proxyModel->sort(-1, Qt::AscendingOrder);
        bool block = m_sortAction->blockSignals(true);
        m_sortAction->setChecked(m_proxyModel->sortColumn() == 0);
        m_sortAction->blockSignals(block);
        updateMethodBoxIndex();
    }
}

bool CPPEditor::sortedMethodOverview() const
{
    return (m_proxyModel->sortColumn() == 0);
}

con's avatar
con committed
563 564 565 566 567 568 569
void CPPEditor::updateMethodBoxIndex()
{
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    QModelIndex lastIndex;

570
    const int rc = m_overviewModel->rowCount();
con's avatar
con committed
571 572 573
    for (int row = 0; row < rc; ++row) {
        const QModelIndex index = m_overviewModel->index(row, 0, QModelIndex());
        Symbol *symbol = m_overviewModel->symbolFromIndex(index);
574
        if (symbol && symbol->line() > unsigned(line))
con's avatar
con committed
575 576 577 578
            break;
        lastIndex = index;
    }

579 580
    QList<QTextEdit::ExtraSelection> selections;

con's avatar
con committed
581 582
    if (lastIndex.isValid()) {
        bool blocked = m_methodCombo->blockSignals(true);
583
        m_methodCombo->setCurrentIndex(m_proxyModel->mapFromSource(lastIndex).row());
584
        updateMethodBoxToolTip();
con's avatar
con committed
585 586
        (void) m_methodCombo->blockSignals(blocked);
    }
587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602

#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;

603 604 605
        Snapshot snapshot;
        snapshot.insert(thisDocument->fileName(), thisDocument);

606
        TypeOfExpression typeOfExpression;
607
        typeOfExpression.setSnapshot(snapshot);
608 609 610 611 612 613 614 615 616 617 618 619 620

        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;

621 622 623
            else if (symbol->isGenerated())
                continue;

Roberto Raggi's avatar
Roberto Raggi committed
624 625 626
            else if (symbol->isBlock())
                continue;

627 628 629 630 631 632
            if (symbol) {
                int column = symbol->column();

                if (column != 0)
                    --column;

633 634 635
                if (symbol->isGenerated())
                    column = 0;

636 637
                QTextCursor c(document()->findBlockByNumber(symbol->line() - 1));
                c.setPosition(c.position() + column);
638 639 640 641 642 643 644 645 646 647 648 649 650

                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;
                }

651 652 653 654 655 656 657 658 659 660 661 662 663 664
                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
665 666
}

667 668 669 670 671
void CPPEditor::updateMethodBoxToolTip()
{
    m_methodCombo->setToolTip(m_methodCombo->currentText());
}

con's avatar
con committed
672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
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)
{
687
    Function *declTy = declaration->type()->asFunctionType();
con's avatar
con committed
688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
    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;

732 733 734
    const Snapshot snapshot = m_modelManager->snapshot();

    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
735 736 737 738 739 740 741
    if (!doc)
        return;
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol || !lastSymbol->scope())
        return;

    Function *f = lastSymbol->asFunction();
742
    if (!f) {
con's avatar
con committed
743
        Scope *fs = lastSymbol->scope();
744
        if (!fs->isFunctionScope())
con's avatar
con committed
745 746 747 748 749 750 751
            fs = fs->enclosingFunctionScope();
        if (fs)
            f = fs->owner()->asFunction();
    }

    if (f) {
        TypeOfExpression typeOfExpression;
752
        typeOfExpression.setSnapshot(m_modelManager->snapshot());
con's avatar
con committed
753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768
        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)
769
            openCppEditorAt(linkToSymbol(declaration));
770
    } else if (lastSymbol->type()->isFunctionType()) {
con's avatar
con committed
771
        if (Symbol *def = findDefinition(lastSymbol))
772
            openCppEditorAt(linkToSymbol(def));
con's avatar
con committed
773 774 775
    }
}

776 777
CPPEditor::Link CPPEditor::findLinkAt(const QTextCursor &cursor,
                                      bool lookupDefinition)
con's avatar
con committed
778
{
779
    Link link;
780

con's avatar
con committed
781
    if (!m_modelManager)
782
        return link;
con's avatar
con committed
783

784
    const Snapshot snapshot = m_modelManager->snapshot();
con's avatar
con committed
785
    int line = 0, column = 0;
786
    convertPosition(cursor.position(), &line, &column);
787
    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
788
    if (!doc)
789
        return link;
790

791
    QTextCursor tc = cursor;
792

793 794 795 796 797 798 799
    // Make sure we're not at the start of a word
    {
        const QChar c = characterAt(tc.position());
        if (c.isLetter() || c == QLatin1Char('_'))
            tc.movePosition(QTextCursor::Right);
    }

800
    static TokenUnderCursor tokenUnderCursor;
801 802 803 804

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

805 806 807 808 809 810 811 812 813 814 815 816 817
    // Handle include directives
    if (tk.is(T_STRING_LITERAL) || tk.is(T_ANGLE_STRING_LITERAL)) {
        const unsigned lineno = cursor.blockNumber() + 1;
        foreach (const Document::Include &incl, doc->includes()) {
            if (incl.line() == lineno && incl.resolved()) {
                link.fileName = incl.fileName();
                link.pos = cursor.block().position() + tk.position() + 1;
                link.length = tk.length() - 2;
                return link;
            }
        }
    }

818 819 820
    if (tk.isNot(T_IDENTIFIER))
        return link;

821 822 823 824 825
    // Find the last symbol up to the cursor position
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol)
        return link;

826 827
    const int nameStart = tk.position();
    const int nameLength = tk.length();
828
    const int endOfName = block.position() + nameStart + nameLength;
829 830

    const QString name = block.text().mid(nameStart, nameLength);
831
    tc.setPosition(endOfName);
832 833

    // Evaluate the type of the expression under the cursor
con's avatar
con committed
834 835 836
    ExpressionUnderCursor expressionUnderCursor;
    const QString expression = expressionUnderCursor(tc);
    TypeOfExpression typeOfExpression;
837
    typeOfExpression.setSnapshot(snapshot);
con's avatar
con committed
838 839 840 841
    QList<TypeOfExpression::Result> resolvedSymbols =
            typeOfExpression(expression, doc, lastSymbol);

    if (!resolvedSymbols.isEmpty()) {
842 843 844 845 846 847 848 849 850 851 852 853 854 855
        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
856
            Symbol *def = 0;
857
            if (lookupDefinition && !lastSymbol->isFunction())
con's avatar
con committed
858 859
                def = findDefinition(symbol);

860
            link = linkToSymbol(def ? def : symbol);
861
            link.pos = block.position() + nameStart;
862 863
            link.length = nameLength;
            return link;
con's avatar
con committed
864 865 866 867 868 869 870

        // 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();
871
                openCppEditorAt(s->fileName(), s->line(), s->column());
con's avatar
con committed
872 873 874 875
            }
#endif
        }
    } else {
876
        // Handle macro uses
Roberto Raggi's avatar
Roberto Raggi committed
877 878 879
        foreach (const Document::MacroUse use, doc->macroUses()) {
            if (use.contains(endOfName - 1)) {
                const Macro &macro = use.macro();
880
                link.fileName = macro.fileName();
881 882 883 884
                link.line = macro.line();
                link.pos = use.begin();
                link.length = use.end() - use.begin();
                return link;
Roberto Raggi's avatar
Roberto Raggi committed
885 886
            }
        }
con's avatar
con committed
887
    }
888

889
    return link;
890 891 892 893
}

void CPPEditor::jumpToDefinition()
{
894
    openCppEditorAt(findLinkAt(textCursor()));
con's avatar
con committed
895 896
}

897
Symbol *CPPEditor::findDefinition(Symbol *symbol)
con's avatar
con committed
898
{
899 900
    if (symbol->isFunction())
        return 0; // symbol is a function definition.
con's avatar
con committed
901

902
    Function *funTy = symbol->type()->asFunctionType();
903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
    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
929 930 931
        }
    }

932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950
    // 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
951 952 953 954 955 956 957 958 959 960 961
            }
        }
    }

    return 0;
}

bool CPPEditor::isElectricCharacter(const QChar &ch) const
{
    if (ch == QLatin1Char('{') ||
        ch == QLatin1Char('}') ||
962
        ch == QLatin1Char('#')) {
con's avatar
con committed
963 964 965 966 967
        return true;
    }
    return false;
}

968 969 970 971 972
void CPPEditor::indentInsertedText(const QTextCursor &tc)
{
    indent(tc.document(), tc, QChar::Null);
}

con's avatar
con committed
973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
// 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);

1008
    Core::ActionContainer *mcontext =
1009
        Core::ICore::instance()->actionManager()->actionContainer(CppEditor::Constants::M_CONTEXT);
con's avatar
con committed
1010 1011 1012 1013 1014
    QMenu *contextMenu = mcontext->menu();

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

1015 1016 1017 1018
    QAction *simplifyDeclarations = new QAction(tr("Simplify Declarations"), menu);
    connect(simplifyDeclarations, SIGNAL(triggered()), this, SLOT(simplifyDeclarations()));
    menu->addAction(simplifyDeclarations);

con's avatar
con committed
1019 1020 1021 1022
    menu->exec(e->globalPos());
    delete menu;
}

1023 1024
void CPPEditor::mouseMoveEvent(QMouseEvent *e)
{
1025
    bool linkFound = false;
1026

1027
    if (m_mouseNavigationEnabled && e->modifiers() & Qt::ControlModifier) {
1028 1029 1030
        // Link emulation behaviour for 'go to definition'
        const QTextCursor cursor = cursorForPosition(e->pos());

1031 1032 1033 1034 1035 1036 1037 1038
        // 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();
        }

1039
        const Link link = findLinkAt(cursor, false);
1040 1041

        if (onText && !link.fileName.isEmpty()) {
1042 1043
            showLink(link);
            linkFound = true;
1044 1045 1046
        }
    }

1047 1048
    if (!linkFound)
        clearLink();
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058

    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());
1059
        if (openCppEditorAt(findLinkAt(cursor))) {
1060
            clearLink();
1061 1062 1063 1064 1065 1066 1067 1068
            e->accept();
            return;
        }
    }

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

1069 1070 1071 1072 1073 1074
void CPPEditor::leaveEvent(QEvent *e)
{
    clearLink();
    TextEditor::BaseTextEditor::leaveEvent(e);
}

1075 1076 1077
void CPPEditor::keyReleaseEvent(QKeyEvent *e)
{
    // Clear link emulation when Ctrl is released
1078 1079
    if (e->key() == Qt::Key_Control)
        clearLink();
1080 1081

    TextEditor::BaseTextEditor::keyReleaseEvent(e);
1082 1083
}

1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
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
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
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);
1128
    CppHighlighter *highlighter = qobject_cast<CppHighlighter*>(baseTextDocument()->syntaxHighlighter());
con's avatar
con committed
1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
    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
1141 1142 1143
                   << QLatin1String(TextEditor::Constants::C_COMMENT)
                   << QLatin1String(TextEditor::Constants::C_DOXYGEN_COMMENT)
                   << QLatin1String(TextEditor::Constants::C_DOXYGEN_TAG);
con's avatar
con committed
1144 1145 1146 1147 1148
    }

    const QVector<QTextCharFormat> formats = fs.toTextCharFormats(categories);
    highlighter->setFormats(formats.constBegin(), formats.constEnd());
    highlighter->rehighlight();
1149 1150

    m_linkFormat = fs.toTextCharFormat(QLatin1String(TextEditor::Constants::C_LINK));
con's avatar
con committed
1151 1152
}

1153 1154 1155 1156 1157
void CPPEditor::setDisplaySettings(const TextEditor::DisplaySettings &ds)
{
    TextEditor::BaseTextEditor::setDisplaySettings(ds);
    m_mouseNavigationEnabled = ds.m_mouseNavigation;
}
con's avatar
con committed
1158 1159 1160

void CPPEditor::unCommentSelection()
{
1161
    Core::Utils::unCommentSelection(this);
con's avatar
con committed
1162 1163
}

1164
CPPEditor::Link CPPEditor::linkToSymbol(CPlusPlus::Symbol *symbol)
1165
{
1166 1167 1168 1169
    const QString fileName = QString::fromUtf8(symbol->fileName(),
                                               symbol->fileNameLength());
    unsigned line = symbol->line();
    unsigned column = symbol->column();
1170

1171 1172
    if (column)
        --column;
1173

1174
    if (symbol->isGenerated())
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
1175
        column = 0;
1176

1177
    return Link(fileName, line, column);
1178 1179
}

1180
bool CPPEditor::openCppEditorAt(const Link &link)
1181
{
1182
    if (link.fileName.isEmpty())
1183 1184
        return false;

1185
    if (baseTextDocument()->fileName() == link.fileName) {
1186 1187
        Core::EditorManager *editorManager = Core::EditorManager::instance();
        editorManager->addCurrentPositionToNavigationHistory();
1188
        gotoLine(link.line, link.column);
1189 1190 1191 1192
        setFocus();
        return true;
    }

1193 1194 1195
    return TextEditor::BaseTextEditor::openEditorAt(link.fileName,
                                                    link.line,
                                                    link.column,
1196
                                                    Constants::C_CPPEDITOR);
con's avatar
con committed
1197
}