cppeditor.cpp 61.8 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 46
#include <Token.h>
#include <Scope.h>
#include <Symbols.h>
#include <Names.h>
#include <Control.h>
#include <CoreTypes.h>
#include <Literals.h>
#include <Semantic.h>
47
#include <ASTVisitor.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>
60
#include <cplusplus/FastPreprocessor.h>
61
#include <cplusplus/CppBindings.h>
62

con's avatar
con committed
63 64 65 66
#include <cpptools/cppmodelmanagerinterface.h>

#include <coreplugin/icore.h>
#include <coreplugin/uniqueidmanager.h>
67
#include <coreplugin/actionmanager/actionmanager.h>
con's avatar
con committed
68 69
#include <coreplugin/editormanager/ieditor.h>
#include <coreplugin/editormanager/editormanager.h>
dt's avatar
dt committed
70
#include <coreplugin/mimedatabase.h>
71
#include <utils/uncommentselection.h>
72
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
73 74 75 76 77 78 79 80 81 82
#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>
83
#include <QtCore/QStack>
con's avatar
con committed
84
#include <QtGui/QAction>
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
85
#include <QtGui/QApplication>
86
#include <QtGui/QHeaderView>
con's avatar
con committed
87 88 89 90 91
#include <QtGui/QLayout>
#include <QtGui/QMenu>
#include <QtGui/QShortcut>
#include <QtGui/QTextEdit>
#include <QtGui/QComboBox>
con's avatar
con committed
92
#include <QtGui/QToolBar>
con's avatar
con committed
93
#include <QtGui/QTreeView>
94
#include <QtGui/QSortFilterProxyModel>
con's avatar
con committed
95

96 97
#include <sstream>

Roberto Raggi's avatar
Roberto Raggi committed
98
enum {
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
99 100
    UPDATE_METHOD_BOX_INTERVAL = 150,
    UPDATE_USES_INTERVAL = 300
Roberto Raggi's avatar
Roberto Raggi committed
101 102
};

Roberto Raggi's avatar
Roberto Raggi committed
103 104 105
using namespace CPlusPlus;
using namespace CppEditor::Internal;

con's avatar
con committed
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124
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
125
class FindScope: protected SymbolVisitor
126
{
Roberto Raggi's avatar
Roberto Raggi committed
127 128 129 130
    TranslationUnit *_unit;
    Scope *_scope;
    unsigned _line;
    unsigned _column;
131

Roberto Raggi's avatar
Roberto Raggi committed
132 133 134
public:
    Scope *operator()(unsigned line, unsigned column,
                      Symbol *root, TranslationUnit *unit)
135
    {
Roberto Raggi's avatar
Roberto Raggi committed
136 137 138 139 140 141 142
        _unit = unit;
        _scope = 0;
        _line = line;
        _column = column;
        accept(root);
        return _scope;
    }
143

Roberto Raggi's avatar
Roberto Raggi committed
144 145
private:
    using SymbolVisitor::visit;
146

Roberto Raggi's avatar
Roberto Raggi committed
147 148
    virtual bool preVisit(Symbol *)
    { return ! _scope; }
149

Roberto Raggi's avatar
Roberto Raggi committed
150 151
    virtual bool visit(Block *block)
    { return processScope(block->members()); }
152

Roberto Raggi's avatar
Roberto Raggi committed
153 154
    virtual bool visit(Function *function)
    { return processScope(function->members()); }
155

Roberto Raggi's avatar
Roberto Raggi committed
156 157 158 159
    bool processScope(Scope *scope)
    {
        if (_scope || ! scope)
            return false;
160

Roberto Raggi's avatar
Roberto Raggi committed
161 162
        for (unsigned i = 0; i < scope->symbolCount(); ++i) {
            accept(scope->symbolAt(i));
163

Roberto Raggi's avatar
Roberto Raggi committed
164 165 166
            if (_scope)
                return false;
        }
167

Roberto Raggi's avatar
Roberto Raggi committed
168 169
        unsigned startOffset = scope->owner()->startOffset();
        unsigned endOffset = scope->owner()->endOffset();
170

Roberto Raggi's avatar
Roberto Raggi committed
171 172
        unsigned startLine, startColumn;
        unsigned endLine, endColumn;
173

Roberto Raggi's avatar
Roberto Raggi committed
174 175
        _unit->getPosition(startOffset, &startLine, &startColumn);
        _unit->getPosition(endOffset, &endLine, &endColumn);
176

Roberto Raggi's avatar
Roberto Raggi committed
177 178 179
        if (_line > startLine || (_line == startLine && _column >= startColumn)) {
            if (_line < endLine || (_line == endLine && _column < endColumn)) {
                _scope = scope;
180 181
            }
        }
Roberto Raggi's avatar
Roberto Raggi committed
182 183 184 185 186 187 188 189

        return false;
    }
};

class FindUses: protected ASTVisitor
{
    Scope *_functionScope;
190

191 192
    FindScope findScope;

193
public:
Roberto Raggi's avatar
Roberto Raggi committed
194
    FindUses(Control *control)
195 196 197
        : ASTVisitor(control)
    { }

Roberto Raggi's avatar
Roberto Raggi committed
198
    // local and external uses.
Roberto Raggi's avatar
Roberto Raggi committed
199
    SemanticInfo::LocalUseMap localUses;
Roberto Raggi's avatar
Roberto Raggi committed
200 201

    void operator()(FunctionDefinitionAST *ast)
202
    {
Roberto Raggi's avatar
Roberto Raggi committed
203 204
        localUses.clear();

205 206 207 208 209 210 211 212 213
        if (ast && ast->symbol) {
            _functionScope = ast->symbol->members();
            accept(ast);
        }
    }

protected:
    using ASTVisitor::visit;

Roberto Raggi's avatar
Roberto Raggi committed
214
    bool findMember(Scope *scope, NameAST *ast, unsigned line, unsigned column)
215
    {
Roberto Raggi's avatar
Roberto Raggi committed
216 217 218 219
        if (! (ast && ast->name))
            return false;

        Identifier *id = ast->name->identifier();
220 221 222 223 224

        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
225
                else if (member->line() < line || (member->line() == line && member->column() <= column)) {
Roberto Raggi's avatar
Roberto Raggi committed
226
                    localUses[member].append(SemanticInfo::Use(line, column, id->size()));
227 228 229 230 231 232 233 234
                    return true;
                }
            }
        }

        return false;
    }

235 236 237 238 239 240 241 242 243 244 245 246
    void searchUsesInTemplateArguments(NameAST *name)
    {
        if (! name)
            return;

        else if (TemplateIdAST *template_id = name->asTemplateId()) {
            for (TemplateArgumentListAST *it = template_id->template_arguments; it; it = it->next) {
                accept(it->template_argument);
            }
        }
    }

247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275
    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();
        }

        return false;
    }

Roberto Raggi's avatar
Roberto Raggi committed
276
    virtual bool visit(TemplateIdAST *ast)
277
    {
278 279 280
        for (TemplateArgumentListAST *arg = ast->template_arguments; arg; arg = arg->next)
            accept(arg->template_argument);

Roberto Raggi's avatar
Roberto Raggi committed
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
        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();
        }

        return false;
    }

    virtual bool visit(QualifiedNameAST *ast)
    {
310 311
        for (NestedNameSpecifierAST *it = ast->nested_name_specifier; it; it = it->next)
            searchUsesInTemplateArguments(it->class_or_namespace_name);
Roberto Raggi's avatar
Roberto Raggi committed
312

313
        searchUsesInTemplateArguments(ast->unqualified_name);
314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355
        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;
    }
356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373

    virtual bool visit(ExpressionOrDeclarationStatementAST *ast)
    {
        accept(ast->declaration);
        return false;
    }

    virtual bool visit(FunctionDeclaratorAST *ast)
    {
        accept(ast->parameters);

        for (SpecifierAST *spec = ast->cv_qualifier_seq; spec; spec = spec->next)
            accept(spec);

        accept(ast->exception_specification);

        return false;
    }
374 375 376
};


Roberto Raggi's avatar
Roberto Raggi committed
377 378 379 380 381 382 383 384
class FunctionDefinitionUnderCursor: protected ASTVisitor
{
    unsigned _line;
    unsigned _column;
    FunctionDefinitionAST *_functionDefinition;

public:
    FunctionDefinitionUnderCursor(Control *control)
Roberto Raggi's avatar
Roberto Raggi committed
385 386
        : ASTVisitor(control),
          _line(0), _column(0)
Roberto Raggi's avatar
Roberto Raggi committed
387 388
    { }

Roberto Raggi's avatar
Roberto Raggi committed
389
    FunctionDefinitionAST *operator()(AST *ast, unsigned line, unsigned column)
Roberto Raggi's avatar
Roberto Raggi committed
390 391
    {
        _functionDefinition = 0;
Roberto Raggi's avatar
Roberto Raggi committed
392 393
        _line = line;
        _column = column;
Roberto Raggi's avatar
Roberto Raggi committed
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
        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;
    }
};

463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
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
501 502
} // end of anonymous namespace

503
static QualifiedNameId *qualifiedNameIdForSymbol(Symbol *s, const LookupContext &context)
con's avatar
con committed
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537
{
    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
538
    : BaseTextEditorEditable(editor)
con's avatar
con committed
539
{
540 541 542 543
    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
544 545
}

546 547
CPPEditor::CPPEditor(QWidget *parent)
    : TextEditor::BaseTextEditor(parent)
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
548
    , m_currentRenameSelection(-1)
549
    , m_inRename(false)
550
    , m_allowSkippingOfBlockEnd(false)
con's avatar
con committed
551
{
Roberto Raggi's avatar
Roberto Raggi committed
552 553 554 555 556
    qRegisterMetaType<SemanticInfo>("SemanticInfo");

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

con's avatar
con committed
557 558
    setParenthesesMatchingEnabled(true);
    setMarksVisible(true);
559
    setCodeFoldingSupported(true);
con's avatar
con committed
560
    setCodeFoldingVisible(true);
561
    baseTextDocument()->setSyntaxHighlighter(new CppHighlighter);
con's avatar
con committed
562

Roberto Raggi's avatar
Roberto Raggi committed
563
    m_modelManager = CppTools::CppModelManagerInterface::instance();
con's avatar
con committed
564 565 566 567 568 569 570 571 572

    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
573 574
    m_semanticHighlighter->abort();
    m_semanticHighlighter->wait();
con's avatar
con committed
575 576 577 578 579 580 581 582 583 584 585 586 587
}

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);
588 589 590 591 592 593

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

594
    QTreeView *methodView = new OverviewTreeView;
con's avatar
con committed
595 596 597 598 599 600
    methodView->header()->hide();
    methodView->setItemsExpandable(false);
    m_methodCombo->setView(methodView);
    m_methodCombo->setMaxVisibleItems(20);

    m_overviewModel = new OverviewModel(this);
601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616
    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
617

Roberto Raggi's avatar
Roberto Raggi committed
618 619 620 621 622
    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
623 624 625 626 627
    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
628 629
    connect(m_methodCombo, SIGNAL(activated(int)), this, SLOT(jumpToMethod(int)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateMethodBoxIndex()));
630
    connect(m_methodCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMethodBoxToolTip()));
631
    connect(document(), SIGNAL(contentsChange(int,int,int)), this, SLOT(onContentsChanged(int,int,int)));
con's avatar
con committed
632 633 634

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

Roberto Raggi's avatar
Roberto Raggi committed
635 636 637 638 639 640 641 642

    // 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
643
    QToolBar *toolBar = static_cast<QToolBar*>(editable->toolBar());
con's avatar
con committed
644
    QList<QAction*> actions = toolBar->actions();
645 646
    QWidget *w = toolBar->widgetForAction(actions.first());
    static_cast<QHBoxLayout*>(w->layout())->insertWidget(0, m_methodCombo, 1);
con's avatar
con committed
647 648
}

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
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);
}

691 692 693 694 695 696 697
void CPPEditor::abortRename()
{
    m_currentRenameSelection = -1;
    m_renameSelections.clear();
    setExtraSelections(CodeSemanticsSelection, m_renameSelections);
}

con's avatar
con committed
698 699 700 701 702 703
void CPPEditor::onDocumentUpdated(Document::Ptr doc)
{
    if (doc->fileName() != file()->fileName())
        return;

    m_overviewModel->rebuild(doc);
704 705
    OverviewTreeView *treeView = static_cast<OverviewTreeView *>(m_methodCombo->view());
    treeView->sync();
Roberto Raggi's avatar
Roberto Raggi committed
706
    updateMethodBoxIndexNow();
con's avatar
con committed
707 708
}

709 710 711
CPlusPlus::Symbol *CPPEditor::findCanonicalSymbol(const QTextCursor &cursor,
                                                  Document::Ptr doc,
                                                  const Snapshot &snapshot) const
Roberto Raggi's avatar
Roberto Raggi committed
712
{
713 714 715
    if (! doc)
        return 0;

716
    QTextCursor tc = cursor;
Roberto Raggi's avatar
Roberto Raggi committed
717 718
    int line, col;
    convertPosition(tc.position(), &line, &col);
719
    ++col; // 1-based line and 1-based column
Roberto Raggi's avatar
Roberto Raggi committed
720

721 722 723 724 725
    int pos = tc.position();
    while (document()->characterAt(pos).isLetterOrNumber() ||
           document()->characterAt(pos) == QLatin1Char('_'))
        ++pos;
    tc.setPosition(pos);
Roberto Raggi's avatar
Roberto Raggi committed
726 727 728

    ExpressionUnderCursor expressionUnderCursor;
    const QString code = expressionUnderCursor(tc);
729
    // qDebug() << "code:" << code;
Roberto Raggi's avatar
Roberto Raggi committed
730 731 732 733 734 735 736 737 738 739

    TypeOfExpression typeOfExpression;
    typeOfExpression.setSnapshot(snapshot);

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

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

740 741
    NamespaceBindingPtr glo = bind(doc, snapshot);
    Symbol *canonicalSymbol = LookupContext::canonicalSymbol(results, glo.data());
742 743 744
    return canonicalSymbol;
}

745 746

void CPPEditor::findUsages()
747 748
{    
    if (Symbol *canonicalSymbol = markSymbols()) {
749
        m_modelManager->findUsages(canonicalSymbol);
750
    }
751 752 753
}

void CPPEditor::renameUsages()
754
{
755 756 757 758 759 760 761 762
    Core::EditorManager::instance()->showEditorInfoBar(QLatin1String("CppEditor.Rename"),
                                                       tr("This change cannot be undone."),
                                                       tr("Yes, I know what I am doing."),
                                                       this, SLOT(renameUsagesNow()));
}

void CPPEditor::renameUsagesNow()
{
763 764 765 766 767 768 769 770 771
    if (Symbol *canonicalSymbol = markSymbols()) {
        Core::EditorManager::instance()->hideEditorInfoBar(QLatin1String("CppEditor.Rename"));
        m_modelManager->renameUsages(canonicalSymbol);
    }
}

Symbol *CPPEditor::markSymbols()
{
    updateSemanticInfo(m_semanticHighlighter->semanticInfo(currentSource()));
772

773 774 775 776 777 778
    m_currentRenameSelection = -1;

    QList<QTextEdit::ExtraSelection> selections;

    SemanticInfo info = m_lastSemanticInfo;

779 780 781
    Symbol *canonicalSymbol = findCanonicalSymbol(textCursor(), info.doc, info.snapshot);
    if (canonicalSymbol) {
        TranslationUnit *unit = info.doc->translationUnit();
782

783 784 785 786
        const QList<int> references = m_modelManager->references(canonicalSymbol, info.doc, info.snapshot);
        foreach (int index, references) {
            unsigned line, column;
            unit->getTokenPosition(index, &line, &column);
787

788 789
            if (column)
                --column;  // adjust the column position.
790

791
            const int len = unit->tokenAt(index).f.length;
792

793 794 795
            QTextCursor cursor(document()->findBlockByNumber(line - 1));
            cursor.setPosition(cursor.position() + column);
            cursor.setPosition(cursor.position() + len, QTextCursor::KeepAnchor);
796

797 798 799 800
            QTextEdit::ExtraSelection sel;
            sel.format = m_occurrencesFormat;
            sel.cursor = cursor;
            selections.append(sel);
801
        }
Roberto Raggi's avatar
Roberto Raggi committed
802
    }
803 804 805

    setExtraSelections(CodeSemanticsSelection, selections);
    return canonicalSymbol;
Roberto Raggi's avatar
Roberto Raggi committed
806 807
}

808
void CPPEditor::renameSymbolUnderCursor()
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
809
{
Roberto Raggi's avatar
Roberto Raggi committed
810
    updateSemanticInfo(m_semanticHighlighter->semanticInfo(currentSource()));
811

Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
812 813 814 815 816 817
    QTextCursor c = textCursor();
    m_currentRenameSelection = -1;

    for (int i = 0; i < m_renameSelections.size(); ++i) {
        QTextEdit::ExtraSelection s = m_renameSelections.at(i);
        if (c.position() >= s.cursor.anchor()
818
                && c.position() <= s.cursor.position()) {
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
819
            m_currentRenameSelection = i;
820
            m_renameSelections[i].format = m_occurrenceRenameFormat;
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
821 822 823 824
            setExtraSelections(CodeSemanticsSelection, m_renameSelections);
            break;
        }
    }
825 826

    if (m_renameSelections.isEmpty())
827
        renameUsages();
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
828 829
}

830 831
void CPPEditor::onContentsChanged(int position, int charsRemoved, int charsAdded)
{
832 833 834
    Q_UNUSED(position)
    Q_UNUSED(charsAdded)

835 836 837
    if (m_currentRenameSelection == -1)
        return;

838 839 840 841 842 843 844
    if (!m_inRename)
        abortRename();

    if (charsRemoved > 0)
        updateUses();
}

con's avatar
con committed
845 846 847 848 849
void CPPEditor::updateFileName()
{ }

void CPPEditor::jumpToMethod(int)
{
850
    QModelIndex index = m_proxyModel->mapToSource(m_methodCombo->view()->currentIndex());
con's avatar
con committed
851 852 853 854
    Symbol *symbol = m_overviewModel->symbolFromIndex(index);
    if (! symbol)
        return;

855
    openCppEditorAt(linkToSymbol(symbol));
con's avatar
con committed
856 857
}

858 859 860 861 862 863 864 865 866 867
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
868
        updateMethodBoxIndexNow();
869 870 871 872 873 874 875 876
    }
}

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

con's avatar
con committed
877 878
void CPPEditor::updateMethodBoxIndex()
{
Roberto Raggi's avatar
Roberto Raggi committed
879 880 881
    m_updateMethodBoxTimer->start(UPDATE_METHOD_BOX_INTERVAL);
}

882 883
void CPPEditor::highlightUses(const QList<SemanticInfo::Use> &uses,
                              QList<QTextEdit::ExtraSelection> *selections)
Roberto Raggi's avatar
Roberto Raggi committed
884
{
Roberto Raggi's avatar
Roberto Raggi committed
885
    bool isUnused = false;
Roberto Raggi's avatar
Roberto Raggi committed
886 887

    if (uses.size() == 1)
Roberto Raggi's avatar
Roberto Raggi committed
888
        isUnused = true;
Roberto Raggi's avatar
Roberto Raggi committed
889

Roberto Raggi's avatar
Roberto Raggi committed
890
    foreach (const SemanticInfo::Use &use, uses) {
Roberto Raggi's avatar
Roberto Raggi committed
891
        QTextEdit::ExtraSelection sel;
Roberto Raggi's avatar
Roberto Raggi committed
892

Roberto Raggi's avatar
Roberto Raggi committed
893
        if (isUnused)
894
            sel.format = m_occurrencesUnusedFormat;
Roberto Raggi's avatar
Roberto Raggi committed
895
        else
896
            sel.format = m_occurrencesFormat;
Roberto Raggi's avatar
Roberto Raggi committed
897

898
        const int anchor = document()->findBlockByNumber(use.line - 1).position() + use.column - 1;
Roberto Raggi's avatar
Roberto Raggi committed
899
        const int position = anchor + use.length;
Roberto Raggi's avatar
Roberto Raggi committed
900

901
        sel.cursor = QTextCursor(document());
Roberto Raggi's avatar
Roberto Raggi committed
902 903
        sel.cursor.setPosition(anchor);
        sel.cursor.setPosition(position, QTextCursor::KeepAnchor);
Roberto Raggi's avatar
Roberto Raggi committed
904

Roberto Raggi's avatar
Roberto Raggi committed
905
        selections->append(sel);
Roberto Raggi's avatar
Roberto Raggi committed
906 907 908
    }
}

Roberto Raggi's avatar
Roberto Raggi committed
909 910 911 912
void CPPEditor::updateMethodBoxIndexNow()
{
    m_updateMethodBoxTimer->stop();

con's avatar
con committed
913 914 915 916 917
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    QModelIndex lastIndex;

918
    const int rc = m_overviewModel->rowCount();
con's avatar
con committed
919 920 921
    for (int row = 0; row < rc; ++row) {
        const QModelIndex index = m_overviewModel->index(row, 0, QModelIndex());
        Symbol *symbol = m_overviewModel->symbolFromIndex(index);
922
        if (symbol && symbol->line() > unsigned(line))
con's avatar
con committed
923 924 925 926 927 928
            break;
        lastIndex = index;
    }

    if (lastIndex.isValid()) {
        bool blocked = m_methodCombo->blockSignals(true);
929
        m_methodCombo->setCurrentIndex(m_proxyModel->mapFromSource(lastIndex).row());
930
        updateMethodBoxToolTip();
con's avatar
con committed
931 932
        (void) m_methodCombo->blockSignals(blocked);
    }
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951
}

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
952
    semanticRehighlight();
con's avatar
con committed
953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969
}

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)
{
970
    Function *declTy = declaration->type()->asFunctionType();
con's avatar
con committed
971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
    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;

1015 1016 1017
    const Snapshot snapshot = m_modelManager->snapshot();

    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1018 1019 1020 1021 1022 1023 1024
    if (!doc)
        return;
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol || !lastSymbol->scope())
        return;

    Function *f = lastSymbol->asFunction();
1025
    if (!f) {
con's avatar
con committed
1026
        Scope *fs = lastSymbol->scope();
1027
        if (!fs->isFunctionScope())
con's avatar
con committed
1028 1029 1030 1031 1032 1033 1034
            fs = fs->enclosingFunctionScope();
        if (fs)
            f = fs->owner()->asFunction();
    }

    if (f) {
        TypeOfExpression typeOfExpression;
1035
        typeOfExpression.setSnapshot(m_modelManager->snapshot());
con's avatar
con committed
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051
        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)
1052
            openCppEditorAt(linkToSymbol(declaration));
1053
    } else if (lastSymbol->type()->isFunctionType()) {
con's avatar
con committed
1054
        if (Symbol *def = findDefinition(lastSymbol))
1055
            openCppEditorAt(linkToSymbol(def));
con's avatar
con committed
1056 1057 1058
    }
}

1059
CPPEditor::Link CPPEditor::findLinkAt(const QTextCursor &cursor,
1060
                                      bool resolveTarget)
con's avatar
con committed
1061
{
1062
    Link link;
1063

con's avatar
con committed
1064
    if (!m_modelManager)
1065
        return link;
con's avatar
con committed
1066

1067
    const Snapshot snapshot = m_modelManager->snapshot();
con's avatar
con committed
1068
    int line = 0, column = 0;
1069
    convertPosition(cursor.position(), &line, &column);
1070
    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1071
    if (!doc)
1072
        return link;
1073

1074
    QTextCursor tc = cursor;
1075

1076 1077 1078 1079 1080 1081 1082
    // 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);
    }

1083
    static TokenUnderCursor tokenUnderCursor;
1084 1085 1086 1087

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

1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
    // 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;
            }
        }
    }

1101 1102 1103
    if (tk.isNot(T_IDENTIFIER))
        return link;

1104 1105 1106 1107 1108
    // Find the last symbol up to the cursor position
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol)
        return link;

1109 1110
    const int nameStart = tk.position();
    const int nameLength = tk.length();
1111
    const int endOfName = block.position() + nameStart + nameLength;
1112 1113

    const QString name = block.text().mid(nameStart, nameLength);
1114
    tc.setPosition(endOfName);
1115 1116

    // Evaluate the type of the expression under the cursor
con's avatar
con committed
1117 1118 1119
    ExpressionUnderCursor expressionUnderCursor;
    const QString expression = expressionUnderCursor(tc);
    TypeOfExpression typeOfExpression;
1120
    typeOfExpression.setSnapshot(snapshot);
con's avatar
con committed
1121 1122 1123 1124
    QList<TypeOfExpression::Result> resolvedSymbols =
            typeOfExpression(expression, doc, lastSymbol);

    if (!resolvedSymbols.isEmpty()) {
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
        TypeOfExpression::Result result = resolvedSymbols.first();

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

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

1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
        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;
                }
            }
        }

1160
        if (Symbol *symbol = result.second) {
con's avatar
con committed
1161
            Symbol *def = 0;
1162
            if (resolveTarget && !lastSymbol->isFunction())
con's avatar
con committed
1163 1164
                def = findDefinition(symbol);

1165
            link = linkToSymbol(def ? def : symbol);
1166
            link.pos = block.position() + nameStart;
1167 1168
            link.length = nameLength;
            return link;
con's avatar
con committed
1169 1170 1171 1172 1173 1174 1175

        // 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();
1176
                openCppEditorAt(s->fileName(), s->line(), s->column());
con's avatar
con committed
1177 1178 1179 1180
            }
#endif
        }
    } else {
1181
        // Handle macro uses
Roberto Raggi's avatar
Roberto Raggi committed
1182 1183 1184
        foreach (const Document::MacroUse use, doc->macroUses()) {
            if (use.contains(endOfName - 1)) {
                const Macro &macro = use.macro();