cppeditor.cpp 64.3 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
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
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
** If you are unsure which license is appropriate for your use, please
hjk's avatar
hjk committed
26
** contact the sales department at http://qt.nokia.com/contact.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30 31 32 33 34
#include "cppeditor.h"
#include "cppeditorconstants.h"
#include "cppplugin.h"
#include "cpphighlighter.h"

Roberto Raggi's avatar
Roberto Raggi committed
35 36
#include <cpptools/cpptoolsplugin.h>

con's avatar
con committed
37
#include <AST.h>
38
#include <Control.h>
con's avatar
con committed
39 40 41 42 43 44 45
#include <Token.h>
#include <Scope.h>
#include <Symbols.h>
#include <Names.h>
#include <Control.h>
#include <CoreTypes.h>
#include <Literals.h>
46
#include <PrettyPrinter.h>
con's avatar
con committed
47
#include <Semantic.h>
48
#include <SymbolVisitor.h>
49
#include <TranslationUnit.h>
con's avatar
con committed
50
#include <cplusplus/ExpressionUnderCursor.h>
Roberto Raggi's avatar
Roberto Raggi committed
51
#include <cplusplus/TypeOfExpression.h>
con's avatar
con committed
52 53 54 55
#include <cplusplus/LookupContext.h>
#include <cplusplus/Overview.h>
#include <cplusplus/OverviewModel.h>
#include <cplusplus/SimpleLexer.h>
56
#include <cplusplus/TokenUnderCursor.h>
con's avatar
con committed
57
#include <cplusplus/TypeOfExpression.h>
58
#include <cplusplus/MatchingText.h>
59
#include <cplusplus/BackwardsScanner.h>
con's avatar
con committed
60 61 62 63
#include <cpptools/cppmodelmanagerinterface.h>

#include <coreplugin/icore.h>
#include <coreplugin/uniqueidmanager.h>
64
#include <coreplugin/actionmanager/actionmanager.h>
con's avatar
con committed
65 66
#include <coreplugin/editormanager/ieditor.h>
#include <coreplugin/editormanager/editormanager.h>
67
#include <utils/uncommentselection.h>
68
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
69 70 71 72 73 74 75 76 77 78
#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>
79
#include <QtCore/QStack>
con's avatar
con committed
80
#include <QtGui/QAction>
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
81
#include <QtGui/QApplication>
82
#include <QtGui/QHeaderView>
con's avatar
con committed
83 84 85 86 87
#include <QtGui/QLayout>
#include <QtGui/QMenu>
#include <QtGui/QShortcut>
#include <QtGui/QTextEdit>
#include <QtGui/QComboBox>
con's avatar
con committed
88
#include <QtGui/QToolBar>
con's avatar
con committed
89
#include <QtGui/QTreeView>
90
#include <QtGui/QSortFilterProxyModel>
con's avatar
con committed
91

92 93
#include <sstream>

Roberto Raggi's avatar
Roberto Raggi committed
94
enum {
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
95 96
    UPDATE_METHOD_BOX_INTERVAL = 150,
    UPDATE_USES_INTERVAL = 300
Roberto Raggi's avatar
Roberto Raggi committed
97 98
};

Roberto Raggi's avatar
Roberto Raggi committed
99 100 101
using namespace CPlusPlus;
using namespace CppEditor::Internal;

con's avatar
con committed
102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
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()));
    }
};

Roberto Raggi's avatar
Roberto Raggi committed
121
class FindScope: protected SymbolVisitor
122
{
Roberto Raggi's avatar
Roberto Raggi committed
123 124 125 126
    TranslationUnit *_unit;
    Scope *_scope;
    unsigned _line;
    unsigned _column;
127

Roberto Raggi's avatar
Roberto Raggi committed
128 129 130
public:
    Scope *operator()(unsigned line, unsigned column,
                      Symbol *root, TranslationUnit *unit)
131
    {
Roberto Raggi's avatar
Roberto Raggi committed
132 133 134 135 136 137 138
        _unit = unit;
        _scope = 0;
        _line = line;
        _column = column;
        accept(root);
        return _scope;
    }
139

Roberto Raggi's avatar
Roberto Raggi committed
140 141
private:
    using SymbolVisitor::visit;
142

Roberto Raggi's avatar
Roberto Raggi committed
143 144
    virtual bool preVisit(Symbol *)
    { return ! _scope; }
145

Roberto Raggi's avatar
Roberto Raggi committed
146 147
    virtual bool visit(Block *block)
    { return processScope(block->members()); }
148

Roberto Raggi's avatar
Roberto Raggi committed
149 150
    virtual bool visit(Function *function)
    { return processScope(function->members()); }
151

Roberto Raggi's avatar
Roberto Raggi committed
152 153 154 155
    bool processScope(Scope *scope)
    {
        if (_scope || ! scope)
            return false;
156

Roberto Raggi's avatar
Roberto Raggi committed
157 158
        for (unsigned i = 0; i < scope->symbolCount(); ++i) {
            accept(scope->symbolAt(i));
159

Roberto Raggi's avatar
Roberto Raggi committed
160 161 162
            if (_scope)
                return false;
        }
163

Roberto Raggi's avatar
Roberto Raggi committed
164 165
        unsigned startOffset = scope->owner()->startOffset();
        unsigned endOffset = scope->owner()->endOffset();
166

Roberto Raggi's avatar
Roberto Raggi committed
167 168
        unsigned startLine, startColumn;
        unsigned endLine, endColumn;
169

Roberto Raggi's avatar
Roberto Raggi committed
170 171
        _unit->getPosition(startOffset, &startLine, &startColumn);
        _unit->getPosition(endOffset, &endLine, &endColumn);
172

Roberto Raggi's avatar
Roberto Raggi committed
173 174 175
        if (_line > startLine || (_line == startLine && _column >= startColumn)) {
            if (_line < endLine || (_line == endLine && _column < endColumn)) {
                _scope = scope;
176 177
            }
        }
Roberto Raggi's avatar
Roberto Raggi committed
178 179 180 181 182 183 184 185

        return false;
    }
};

class FindUses: protected ASTVisitor
{
    Scope *_functionScope;
186

187 188
    FindScope findScope;

189
public:
Roberto Raggi's avatar
Roberto Raggi committed
190
    FindUses(Control *control)
191 192 193
        : ASTVisitor(control)
    { }

Roberto Raggi's avatar
Roberto Raggi committed
194
    // local and external uses.
Roberto Raggi's avatar
Roberto Raggi committed
195 196
    SemanticInfo::LocalUseMap localUses;
    SemanticInfo::ExternalUseMap externalUses;
Roberto Raggi's avatar
Roberto Raggi committed
197 198

    void operator()(FunctionDefinitionAST *ast)
199
    {
Roberto Raggi's avatar
Roberto Raggi committed
200 201 202
        localUses.clear();
        externalUses.clear();

203 204 205 206 207 208 209 210 211
        if (ast && ast->symbol) {
            _functionScope = ast->symbol->members();
            accept(ast);
        }
    }

protected:
    using ASTVisitor::visit;

Roberto Raggi's avatar
Roberto Raggi committed
212
    bool findMember(Scope *scope, NameAST *ast, unsigned line, unsigned column)
213
    {
Roberto Raggi's avatar
Roberto Raggi committed
214 215 216 217
        if (! (ast && ast->name))
            return false;

        Identifier *id = ast->name->identifier();
218 219 220 221 222

        if (scope) {
            for (Symbol *member = scope->lookat(id); member; member = member->next()) {
                if (member->identifier() != id)
                    continue;
Roberto Raggi's avatar
typo  
Roberto Raggi committed
223
                else if (member->line() < line || (member->line() == line && member->column() <= column)) {
Roberto Raggi's avatar
Roberto Raggi committed
224
                    localUses[member].append(SemanticInfo::Use(line, column, id->size()));
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258
                    return true;
                }
            }
        }

        return false;
    }

    virtual bool visit(SimpleNameAST *ast)
    {
        unsigned line, column;
        getTokenStartPosition(ast->firstToken(), &line, &column);

        Scope *scope = findScope(line, column,
                                 _functionScope->owner(),
                                 translationUnit());

        while (scope) {
            if (scope->isFunctionScope()) {
                Function *fun = scope->owner()->asFunction();
                if (findMember(fun->members(), ast, line, column))
                    return false;
                else if (findMember(fun->arguments(), ast, line, column))
                    return false;
            } else if (scope->isBlockScope()) {
                if (findMember(scope, ast, line, column))
                    return false;
            } else {
                break;
            }

            scope = scope->enclosingScope();
        }

Roberto Raggi's avatar
Roberto Raggi committed
259
        Identifier *id = identifier(ast->identifier_token);
Roberto Raggi's avatar
Roberto Raggi committed
260
        externalUses[id].append(SemanticInfo::Use(line, column, id->size()));
261 262 263 264

        return false;
    }

Roberto Raggi's avatar
Roberto Raggi committed
265
    virtual bool visit(TemplateIdAST *ast)
266
    {
Roberto Raggi's avatar
Roberto Raggi committed
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
        unsigned line, column;
        getTokenStartPosition(ast->firstToken(), &line, &column);

        Scope *scope = findScope(line, column,
                                 _functionScope->owner(),
                                 translationUnit());

        while (scope) {
            if (scope->isFunctionScope()) {
                Function *fun = scope->owner()->asFunction();
                if (findMember(fun->members(), ast, line, column))
                    return false;
                else if (findMember(fun->arguments(), ast, line, column))
                    return false;
            } else if (scope->isBlockScope()) {
                if (findMember(scope, ast, line, column))
                    return false;
            } else {
                break;
            }

            scope = scope->enclosingScope();
        }

        Identifier *id = identifier(ast->identifier_token);
Roberto Raggi's avatar
Roberto Raggi committed
292
        externalUses[id].append(SemanticInfo::Use(line, column, id->size()));
Roberto Raggi's avatar
Roberto Raggi committed
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

        for (TemplateArgumentListAST *arg = ast->template_arguments; arg; arg = arg->next)
            accept(arg);

        return false;
    }

    virtual bool visit(QualifiedNameAST *ast)
    {
        if (! ast->global_scope_token) {
            if (ast->nested_name_specifier) {
                accept(ast->nested_name_specifier->class_or_namespace_name);

                for (NestedNameSpecifierAST *it = ast->nested_name_specifier->next; it; it = it->next) {
                    if (NameAST *class_or_namespace_name = it->class_or_namespace_name) {
                        if (TemplateIdAST *template_id = class_or_namespace_name->asTemplateId()) {
                            for (TemplateArgumentListAST *arg = template_id->template_arguments; arg; arg = arg->next)
                                accept(arg);
                        }
                    }
                }
            }

            accept(ast->unqualified_name);
        }

319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363
        return false;
    }

    virtual bool visit(PostfixExpressionAST *ast)
    {
        accept(ast->base_expression);
        for (PostfixAST *it = ast->postfix_expressions; it; it = it->next) {
            if (it->asMemberAccess() != 0)
                continue; // skip members
            accept(it);
        }
        return false;
    }

    virtual bool visit(ElaboratedTypeSpecifierAST *)
    {
        // ### template args
        return false;
    }

    virtual bool visit(ClassSpecifierAST *)
    {
        // ### template args
        return false;
    }

    virtual bool visit(EnumSpecifierAST *)
    {
        // ### template args
        return false;
    }

    virtual bool visit(UsingDirectiveAST *)
    {
        return false;
    }

    virtual bool visit(UsingAST *ast)
    {
        accept(ast->name);
        return false;
    }
};


Roberto Raggi's avatar
Roberto Raggi committed
364 365 366 367 368 369 370 371
class FunctionDefinitionUnderCursor: protected ASTVisitor
{
    unsigned _line;
    unsigned _column;
    FunctionDefinitionAST *_functionDefinition;

public:
    FunctionDefinitionUnderCursor(Control *control)
Roberto Raggi's avatar
Roberto Raggi committed
372 373
        : ASTVisitor(control),
          _line(0), _column(0)
Roberto Raggi's avatar
Roberto Raggi committed
374 375
    { }

Roberto Raggi's avatar
Roberto Raggi committed
376
    FunctionDefinitionAST *operator()(AST *ast, unsigned line, unsigned column)
Roberto Raggi's avatar
Roberto Raggi committed
377 378
    {
        _functionDefinition = 0;
Roberto Raggi's avatar
Roberto Raggi committed
379 380
        _line = line;
        _column = column;
Roberto Raggi's avatar
Roberto Raggi committed
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
        accept(ast);
        return _functionDefinition;
    }

protected:
    virtual bool preVisit(AST *ast)
    {
        if (_functionDefinition)
            return false;

        else if (FunctionDefinitionAST *def = ast->asFunctionDefinition()) {
            unsigned startLine, startColumn;
            unsigned endLine, endColumn;
            getTokenStartPosition(def->firstToken(), &startLine, &startColumn);
            getTokenEndPosition(def->lastToken() - 1, &endLine, &endColumn);

            if (_line > startLine || (_line == startLine && _column >= startColumn)) {
                if (_line < endLine || (_line == endLine && _column < endColumn)) {
                    _functionDefinition = def;
                    return false;
                }
            }
        }

        return true;
    }

};

class ProcessDeclarators: protected ASTVisitor
{
    QList<DeclaratorIdAST *> _declarators;
    bool _visitFunctionDeclarator;

public:
    ProcessDeclarators(Control *control)
            : ASTVisitor(control), _visitFunctionDeclarator(true)
    { }

    QList<DeclaratorIdAST *> operator()(FunctionDefinitionAST *ast)
    {
        _declarators.clear();

        if (ast) {
            if (ast->declarator) {
                _visitFunctionDeclarator = true;
                accept(ast->declarator->postfix_declarators);
            }

            _visitFunctionDeclarator = false;
            accept(ast->function_body);
        }

        return _declarators;
    }

protected:
    using ASTVisitor::visit;

    virtual bool visit(FunctionDeclaratorAST *)
    { return _visitFunctionDeclarator; }

    virtual bool visit(DeclaratorIdAST *ast)
    {
        _declarators.append(ast);
        return true;
    }
};

450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487
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
488 489
} // end of anonymous namespace

490
static QualifiedNameId *qualifiedNameIdForSymbol(Symbol *s, const LookupContext &context)
con's avatar
con committed
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524
{
    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
525
    : BaseTextEditorEditable(editor)
con's avatar
con committed
526
{
527 528 529 530
    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
531 532
}

533 534
CPPEditor::CPPEditor(QWidget *parent)
    : TextEditor::BaseTextEditor(parent)
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
535
    , m_currentRenameSelection(-1)
536
    , m_inRename(false)
537
    , m_allowSkippingOfBlockEnd(false)
con's avatar
con committed
538
{
Roberto Raggi's avatar
Roberto Raggi committed
539 540 541 542 543
    qRegisterMetaType<SemanticInfo>("SemanticInfo");

    m_semanticHighlighter = new SemanticHighlighter(this);
    m_semanticHighlighter->start();

con's avatar
con committed
544 545
    setParenthesesMatchingEnabled(true);
    setMarksVisible(true);
546
    setCodeFoldingSupported(true);
con's avatar
con committed
547
    setCodeFoldingVisible(true);
548
    baseTextDocument()->setSyntaxHighlighter(new CppHighlighter);
con's avatar
con committed
549 550 551 552 553 554 555 556 557 558 559 560 561 562 563

#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

564 565
    m_modelManager = ExtensionSystem::PluginManager::instance()
        ->getObject<CppTools::CppModelManagerInterface>();
con's avatar
con committed
566 567 568 569 570 571 572 573 574

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

CPPEditor::~CPPEditor()
{
Roberto Raggi's avatar
Roberto Raggi committed
575 576
    m_semanticHighlighter->abort();
    m_semanticHighlighter->wait();
con's avatar
con committed
577 578 579 580 581 582 583 584 585 586 587 588 589
}

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);
590 591 592 593 594 595

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

596
    QTreeView *methodView = new OverviewTreeView;
con's avatar
con committed
597 598 599 600 601 602
    methodView->header()->hide();
    methodView->setItemsExpandable(false);
    m_methodCombo->setView(methodView);
    m_methodCombo->setMaxVisibleItems(20);

    m_overviewModel = new OverviewModel(this);
603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618
    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
619

Roberto Raggi's avatar
Roberto Raggi committed
620 621 622 623 624
    m_updateMethodBoxTimer = new QTimer(this);
    m_updateMethodBoxTimer->setSingleShot(true);
    m_updateMethodBoxTimer->setInterval(UPDATE_METHOD_BOX_INTERVAL);
    connect(m_updateMethodBoxTimer, SIGNAL(timeout()), this, SLOT(updateMethodBoxIndexNow()));

Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
625 626 627 628 629
    m_updateUsesTimer = new QTimer(this);
    m_updateUsesTimer->setSingleShot(true);
    m_updateUsesTimer->setInterval(UPDATE_USES_INTERVAL);
    connect(m_updateUsesTimer, SIGNAL(timeout()), this, SLOT(updateUsesNow()));

con's avatar
con committed
630 631
    connect(m_methodCombo, SIGNAL(activated(int)), this, SLOT(jumpToMethod(int)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateMethodBoxIndex()));
632
    connect(m_methodCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMethodBoxToolTip()));
633
    connect(document(), SIGNAL(contentsChange(int,int,int)), this, SLOT(onContentsChanged(int,int,int)));
con's avatar
con committed
634 635 636

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

Roberto Raggi's avatar
Roberto Raggi committed
637 638 639 640 641 642 643 644

    // set up the semantic highlighter
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateUses()));
    connect(this, SIGNAL(textChanged()), this, SLOT(updateUses()));

    connect(m_semanticHighlighter, SIGNAL(changed(SemanticInfo)),
            this, SLOT(updateSemanticInfo(SemanticInfo)));

con's avatar
con committed
645
    QToolBar *toolBar = static_cast<QToolBar*>(editable->toolBar());
con's avatar
con committed
646
    QList<QAction*> actions = toolBar->actions();
647 648
    QWidget *w = toolBar->widgetForAction(actions.first());
    static_cast<QHBoxLayout*>(w->layout())->insertWidget(0, m_methodCombo, 1);
con's avatar
con committed
649 650
}

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
void CPPEditor::inAllRenameSelections(EditOperation operation,
                                      const QTextEdit::ExtraSelection &currentRenameSelection,
                                      QTextCursor cursor,
                                      const QString &text)
{
    m_inRename = true;
    cursor.beginEditBlock();

    const int offset = cursor.position() - currentRenameSelection.cursor.anchor();

    for (int i = 0; i < m_renameSelections.size(); ++i) {
        QTextEdit::ExtraSelection &s = m_renameSelections[i];
        int pos = s.cursor.anchor();
        int endPos = s.cursor.position();
        s.cursor.setPosition(s.cursor.anchor() + offset);

        switch (operation) {
        case DeletePreviousChar:
            s.cursor.deletePreviousChar();
            --endPos;
            break;
        case DeleteChar:
            s.cursor.deleteChar();
            --endPos;
            break;
        case InsertText:
            s.cursor.insertText(text);
            endPos += text.length();
            break;
        }

        s.cursor.setPosition(pos);
        s.cursor.setPosition(endPos, QTextCursor::KeepAnchor);
    }

    cursor.endEditBlock();
    m_inRename = false;

    setExtraSelections(CodeSemanticsSelection, m_renameSelections);
    setTextCursor(cursor);
}

693 694 695 696 697 698 699
void CPPEditor::abortRename()
{
    m_currentRenameSelection = -1;
    m_renameSelections.clear();
    setExtraSelections(CodeSemanticsSelection, m_renameSelections);
}

con's avatar
con committed
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
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);
800 801
    OverviewTreeView *treeView = static_cast<OverviewTreeView *>(m_methodCombo->view());
    treeView->sync();
Roberto Raggi's avatar
Roberto Raggi committed
802
    updateMethodBoxIndexNow();
con's avatar
con committed
803 804
}

805 806 807 808 809 810 811
void CPPEditor::reformatDocument()
{
    using namespace CPlusPlus;

    QByteArray source = toPlainText().toUtf8();

    Control control;
812
    StringLiteral *fileId = control.findOrInsertStringLiteral("<file>");
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832
    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()));
}

833 834 835
CPlusPlus::Symbol *CPPEditor::findCanonicalSymbol(const QTextCursor &cursor,
                                                  Document::Ptr doc,
                                                  const Snapshot &snapshot) const
Roberto Raggi's avatar
Roberto Raggi committed
836
{
837
    QTextCursor tc = cursor;
Roberto Raggi's avatar
Roberto Raggi committed
838 839 840 841 842 843 844 845
    int line, col;
    convertPosition(tc.position(), &line, &col);
    ++col;

    tc.movePosition(QTextCursor::EndOfWord);

    ExpressionUnderCursor expressionUnderCursor;
    const QString code = expressionUnderCursor(tc);
846
    // qDebug() << "code:" << code;
Roberto Raggi's avatar
Roberto Raggi committed
847

848
    const QString fileName = const_cast<CPPEditor *>(this)->file()->fileName();
Roberto Raggi's avatar
Roberto Raggi committed
849 850 851 852 853 854 855 856 857 858

    TypeOfExpression typeOfExpression;
    typeOfExpression.setSnapshot(snapshot);

    Symbol *lastVisibleSymbol = doc->findSymbolAt(line, col);

    const QList<TypeOfExpression::Result> results = typeOfExpression(code, doc,
                                                                     lastVisibleSymbol,
                                                                     TypeOfExpression::Preprocess);

859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
    Symbol *canonicalSymbol = LookupContext::canonicalSymbol(results);
    return canonicalSymbol;
}

void CPPEditor::findReferences()
{
    m_currentRenameSelection = -1;

    QList<QTextEdit::ExtraSelection> selections;

    SemanticInfo info = m_lastSemanticInfo;

    if (info.doc) {
        if (Symbol *canonicalSymbol = findCanonicalSymbol(textCursor(), info.doc, info.snapshot)) {
            TranslationUnit *unit = info.doc->translationUnit();

            const QList<int> references = m_modelManager->references(canonicalSymbol, info.doc, info.snapshot);
            foreach (int index, references) {
                unsigned line, column;
                unit->getTokenPosition(index, &line, &column);

                if (column)
                    --column;  // adjust the column position.

                const int len = unit->tokenAt(index).f.length;

                QTextCursor cursor(document()->findBlockByNumber(line - 1));
                cursor.setPosition(cursor.position() + column);
                cursor.setPosition(cursor.position() + len, QTextCursor::KeepAnchor);

                QTextEdit::ExtraSelection sel;
                sel.format = m_occurrencesFormat;
                sel.cursor = cursor;
                selections.append(sel);
            }

            setExtraSelections(CodeSemanticsSelection, selections);

            m_modelManager->findReferences(canonicalSymbol);
        }
Roberto Raggi's avatar
Roberto Raggi committed
899 900 901
    }
}

902
void CPPEditor::renameSymbolUnderCursor()
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
903
{
Roberto Raggi's avatar
Roberto Raggi committed
904
    updateSemanticInfo(m_semanticHighlighter->semanticInfo(currentSource()));
905

Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
906 907 908 909 910 911 912
    QTextCursor c = textCursor();
    m_currentRenameSelection = -1;

    m_renameSelections = extraSelections(CodeSemanticsSelection);
    for (int i = 0; i < m_renameSelections.size(); ++i) {
        QTextEdit::ExtraSelection s = m_renameSelections.at(i);
        if (c.position() >= s.cursor.anchor()
913
                && c.position() <= s.cursor.position()) {
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
914
            m_currentRenameSelection = i;
915
            m_renameSelections[i].format = m_occurrenceRenameFormat;
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
916 917 918 919
            setExtraSelections(CodeSemanticsSelection, m_renameSelections);
            break;
        }
    }
920 921 922

    if (m_renameSelections.isEmpty())
        findReferences();
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
923 924
}

925 926
void CPPEditor::onContentsChanged(int position, int charsRemoved, int charsAdded)
{
927 928 929
    Q_UNUSED(position)
    Q_UNUSED(charsAdded)

930 931 932
    if (m_currentRenameSelection == -1)
        return;

933 934 935 936 937 938 939
    if (!m_inRename)
        abortRename();

    if (charsRemoved > 0)
        updateUses();
}

con's avatar
con committed
940 941 942 943 944
void CPPEditor::updateFileName()
{ }

void CPPEditor::jumpToMethod(int)
{
945
    QModelIndex index = m_proxyModel->mapToSource(m_methodCombo->view()->currentIndex());
con's avatar
con committed
946 947 948 949
    Symbol *symbol = m_overviewModel->symbolFromIndex(index);
    if (! symbol)
        return;

950
    openCppEditorAt(linkToSymbol(symbol));
con's avatar
con committed
951 952
}

953 954 955 956 957 958 959 960 961 962
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);
Roberto Raggi's avatar
Roberto Raggi committed
963
        updateMethodBoxIndexNow();
964 965 966 967 968 969 970 971
    }
}

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

con's avatar
con committed
972 973
void CPPEditor::updateMethodBoxIndex()
{
Roberto Raggi's avatar
Roberto Raggi committed
974 975 976
    m_updateMethodBoxTimer->start(UPDATE_METHOD_BOX_INTERVAL);
}

977 978
void CPPEditor::highlightUses(const QList<SemanticInfo::Use> &uses,
                              QList<QTextEdit::ExtraSelection> *selections)
Roberto Raggi's avatar
Roberto Raggi committed
979
{
Roberto Raggi's avatar
Roberto Raggi committed
980
    bool isUnused = false;
981
    if (uses.size() == 1) {
Roberto Raggi's avatar
Roberto Raggi committed
982
        isUnused = true;
983 984
        return; // ###
    }
Roberto Raggi's avatar
Roberto Raggi committed
985

Roberto Raggi's avatar
Roberto Raggi committed
986
    foreach (const SemanticInfo::Use &use, uses) {
Roberto Raggi's avatar
Roberto Raggi committed
987
        QTextEdit::ExtraSelection sel;
Roberto Raggi's avatar
Roberto Raggi committed
988

Roberto Raggi's avatar
Roberto Raggi committed
989
        if (isUnused)
990
            sel.format = m_occurrencesUnusedFormat;
Roberto Raggi's avatar
Roberto Raggi committed
991
        else
992
            sel.format = m_occurrencesFormat;
Roberto Raggi's avatar
Roberto Raggi committed
993

994
        const int anchor = document()->findBlockByNumber(use.line - 1).position() + use.column - 1;
Roberto Raggi's avatar
Roberto Raggi committed
995
        const int position = anchor + use.length;
Roberto Raggi's avatar
Roberto Raggi committed
996

997
        sel.cursor = QTextCursor(document());
Roberto Raggi's avatar
Roberto Raggi committed
998 999
        sel.cursor.setPosition(anchor);
        sel.cursor.setPosition(position, QTextCursor::KeepAnchor);
Roberto Raggi's avatar
Roberto Raggi committed
1000

Roberto Raggi's avatar
Roberto Raggi committed
1001
        selections->append(sel);
Roberto Raggi's avatar
Roberto Raggi committed
1002 1003 1004
    }
}

Roberto Raggi's avatar
Roberto Raggi committed
1005 1006 1007 1008
void CPPEditor::updateMethodBoxIndexNow()
{
    m_updateMethodBoxTimer->stop();

con's avatar
con committed
1009 1010 1011 1012 1013
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    QModelIndex lastIndex;

1014
    const int rc = m_overviewModel->rowCount();
con's avatar
con committed
1015 1016 1017
    for (int row = 0; row < rc; ++row) {
        const QModelIndex index = m_overviewModel->index(row, 0, QModelIndex());
        Symbol *symbol = m_overviewModel->symbolFromIndex(index);
1018
        if (symbol && symbol->line() > unsigned(line))
con's avatar
con committed
1019 1020 1021 1022 1023 1024
            break;
        lastIndex = index;
    }

    if (lastIndex.isValid()) {
        bool blocked = m_methodCombo->blockSignals(true);
1025
        m_methodCombo->setCurrentIndex(m_proxyModel->mapFromSource(lastIndex).row());
1026
        updateMethodBoxToolTip();
con's avatar
con committed
1027 1028
        (void) m_methodCombo->blockSignals(blocked);
    }
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
}

void CPPEditor::updateMethodBoxToolTip()
{
    m_methodCombo->setToolTip(m_methodCombo->currentText());
}

void CPPEditor::updateUses()
{
    m_updateUsesTimer->start(UPDATE_USES_INTERVAL);
}

void CPPEditor::updateUsesNow()
{
    m_updateUsesTimer->stop();

    if (m_currentRenameSelection != -1)
        return;

Roberto Raggi's avatar
Roberto Raggi committed
1048
    semanticRehighlight();
con's avatar
con committed
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
}

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)
{
1066
    Function *declTy = declaration->type()->asFunctionType();
con's avatar
con committed
1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 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 1107 1108 1109 1110
    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;

1111 1112 1113
    const Snapshot snapshot = m_modelManager->snapshot();

    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1114 1115 1116 1117 1118 1119 1120
    if (!doc)
        return;
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol || !lastSymbol->scope())
        return;

    Function *f = lastSymbol->asFunction();
1121
    if (!f) {
con's avatar
con committed
1122
        Scope *fs = lastSymbol->scope();
1123
        if (!fs->isFunctionScope())
con's avatar
con committed
1124 1125 1126 1127 1128 1129 1130
            fs = fs->enclosingFunctionScope();
        if (fs)
            f = fs->owner()->asFunction();
    }

    if (f) {
        TypeOfExpression typeOfExpression;
1131
        typeOfExpression.setSnapshot(m_modelManager->snapshot());
con's avatar
con committed
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147
        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)
1148
            openCppEditorAt(linkToSymbol(declaration));
1149
    } else if (lastSymbol->type()->isFunctionType()) {
con's avatar
con committed
1150
        if (Symbol *def = findDefinition(lastSymbol))
1151
            openCppEditorAt(linkToSymbol(def));
con's avatar
con committed
1152 1153 1154
    }
}

1155
CPPEditor::Link CPPEditor::findLinkAt(const QTextCursor &cursor,
1156
                                      bool resolveTarget)
con's avatar
con committed
1157
{
1158
    Link link;
1159

con's avatar
con committed
1160
    if (!m_modelManager)
1161
        return link;
con's avatar
con committed
1162

1163
    const Snapshot snapshot = m_modelManager->snapshot();
con's avatar
con committed
1164
    int line = 0, column = 0;
1165
    convertPosition(cursor.position(), &line, &column);
1166
    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1167
    if (!doc)
1168
        return link;
1169

1170
    QTextCursor tc = cursor;
1171

1172 1173 1174 1175 1176 1177 1178
    // 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);
    }

1179
    static TokenUnderCursor tokenUnderCursor;
1180 1181 1182 1183

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

1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
    // 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;
            }
        }
    }

1197 1198 1199
    if (tk.isNot(T_IDENTIFIER))
        return link;

1200 1201 1202 1203 1204
    // Find the last symbol up to the cursor position
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol)
        return link;

1205 1206
    const int nameStart = tk.position();
    const int nameLength = tk.length();
1207
    const int endOfName = block.position() + nameStart + nameLength;
1208 1209

    const QString name = block.text().mid(nameStart, nameLength);
1210
    tc.setPosition(endOfName);
1211 1212

    // Evaluate the type of the expression under the cursor
con's avatar
con committed
1213 1214 1215
    ExpressionUnderCursor expressionUnderCursor;
    const QString expression = expressionUnderCursor(tc);
    TypeOfExpression typeOfExpression;
1216
    typeOfExpression.setSnapshot(snapshot);
con's avatar
con committed
1217 1218 1219 1220
    QList<TypeOfExpression::Result> resolvedSymbols =
            typeOfExpression(expression, doc, lastSymbol);

    if (!resolvedSymbols.isEmpty()) {
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
        TypeOfExpression::Result result = resolvedSymbols.first();

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

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

1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255
        if (result.first->isObjCForwardClassDeclarationType()) {
            while (! resolvedSymbols.isEmpty()) {
                TypeOfExpression::Result r = resolvedSymbols.takeFirst();

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

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

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

1256
        if (Symbol *symbol = result.second) {
con's avatar
con committed
1257
            Symbol *def = 0;
1258
            if (resolveTarget && !lastSymbol->isFunction())
con's avatar
con committed
1259 1260
                def = findDefinition(symbol);

1261
            link = linkToSymbol(def ? def : symbol);
1262
            link.pos = block.position() + nameStart;
1263 1264
            link.length = nameLength;
            return link;
con's avatar
con committed
1265 1266 1267 1268 1269 1270 1271

        // 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();
1272
                openCppEditorAt(s->fileName(), s->line(), s->column());
con's avatar
con committed
1273 1274 1275 1276
            }
#endif
        }
    } else {
1277
        // Handle macro uses
Roberto Raggi's avatar
Roberto Raggi committed
1278 1279 1280
        foreach (const Document::MacroUse use, doc->macroUses()) {
            if (use.contains(endOfName - 1)) {
                const Macro &macro = use.macro();
1281
                link.fileName = macro.fileName();
1282 1283 1284