cppeditor.cpp 62 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
    m_initialized = false;
Roberto Raggi's avatar
Roberto Raggi committed
553 554 555 556 557
    qRegisterMetaType<SemanticInfo>("SemanticInfo");

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

con's avatar
con committed
558 559
    setParenthesesMatchingEnabled(true);
    setMarksVisible(true);
560
    setCodeFoldingSupported(true);
con's avatar
con committed
561
    setCodeFoldingVisible(true);
562
    baseTextDocument()->setSyntaxHighlighter(new CppHighlighter);
con's avatar
con committed
563

Roberto Raggi's avatar
Roberto Raggi committed
564
    m_modelManager = CppTools::CppModelManagerInterface::instance();
con's avatar
con committed
565 566 567 568 569 570 571 572 573

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

CPPEditor::~CPPEditor()
{
574 575
    Core::EditorManager::instance()->hideEditorInfoBar(QLatin1String("CppEditor.Rename"));

Roberto Raggi's avatar
Roberto Raggi committed
576 577
    m_semanticHighlighter->abort();
    m_semanticHighlighter->wait();
con's avatar
con committed
578 579 580 581 582 583 584 585 586 587 588 589 590
}

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);
591 592 593 594 595 596

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

597
    QTreeView *methodView = new OverviewTreeView;
con's avatar
con committed
598 599 600 601 602 603
    methodView->header()->hide();
    methodView->setItemsExpandable(false);
    m_methodCombo->setView(methodView);
    m_methodCombo->setMaxVisibleItems(20);

    m_overviewModel = new OverviewModel(this);
604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619
    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
620

Roberto Raggi's avatar
Roberto Raggi committed
621 622 623 624 625
    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
626 627 628 629 630
    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
631 632
    connect(m_methodCombo, SIGNAL(activated(int)), this, SLOT(jumpToMethod(int)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateMethodBoxIndex()));
633
    connect(m_methodCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMethodBoxToolTip()));
634
    connect(document(), SIGNAL(contentsChange(int,int,int)), this, SLOT(onContentsChanged(int,int,int)));
con's avatar
con committed
635 636 637

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

Roberto Raggi's avatar
Roberto Raggi committed
638 639 640 641 642 643 644 645

    // 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
646
    QToolBar *toolBar = static_cast<QToolBar*>(editable->toolBar());
con's avatar
con committed
647
    QList<QAction*> actions = toolBar->actions();
648 649
    QWidget *w = toolBar->widgetForAction(actions.first());
    static_cast<QHBoxLayout*>(w->layout())->insertWidget(0, m_methodCombo, 1);
con's avatar
con committed
650 651
}

652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693
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);
}

694 695 696 697 698 699 700
void CPPEditor::abortRename()
{
    m_currentRenameSelection = -1;
    m_renameSelections.clear();
    setExtraSelections(CodeSemanticsSelection, m_renameSelections);
}

con's avatar
con committed
701 702 703 704 705
void CPPEditor::onDocumentUpdated(Document::Ptr doc)
{
    if (doc->fileName() != file()->fileName())
        return;

Roberto Raggi's avatar
Roberto Raggi committed
706 707 708 709 710 711 712
    if (! m_initialized) {
        m_initialized = true;

        const SemanticHighlighter::Source source = currentSource(/*force = */ true);
        m_semanticHighlighter->rehighlight(source);
    }

con's avatar
con committed
713
    m_overviewModel->rebuild(doc);
714 715
    OverviewTreeView *treeView = static_cast<OverviewTreeView *>(m_methodCombo->view());
    treeView->sync();
Roberto Raggi's avatar
Roberto Raggi committed
716
    updateMethodBoxIndexNow();
con's avatar
con committed
717 718
}

719 720 721
CPlusPlus::Symbol *CPPEditor::findCanonicalSymbol(const QTextCursor &cursor,
                                                  Document::Ptr doc,
                                                  const Snapshot &snapshot) const
Roberto Raggi's avatar
Roberto Raggi committed
722
{
723 724 725
    if (! doc)
        return 0;

726
    QTextCursor tc = cursor;
Roberto Raggi's avatar
Roberto Raggi committed
727 728
    int line, col;
    convertPosition(tc.position(), &line, &col);
729
    ++col; // 1-based line and 1-based column
Roberto Raggi's avatar
Roberto Raggi committed
730

731 732 733 734 735
    int pos = tc.position();
    while (document()->characterAt(pos).isLetterOrNumber() ||
           document()->characterAt(pos) == QLatin1Char('_'))
        ++pos;
    tc.setPosition(pos);
Roberto Raggi's avatar
Roberto Raggi committed
736 737 738

    ExpressionUnderCursor expressionUnderCursor;
    const QString code = expressionUnderCursor(tc);
739
    // qDebug() << "code:" << code;
Roberto Raggi's avatar
Roberto Raggi committed
740 741 742 743 744 745 746 747 748 749

    TypeOfExpression typeOfExpression;
    typeOfExpression.setSnapshot(snapshot);

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

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

750 751
    NamespaceBindingPtr glo = bind(doc, snapshot);
    Symbol *canonicalSymbol = LookupContext::canonicalSymbol(results, glo.data());
752 753 754
    return canonicalSymbol;
}

755 756

void CPPEditor::findUsages()
757 758
{    
    if (Symbol *canonicalSymbol = markSymbols()) {
759
        m_modelManager->findUsages(canonicalSymbol);
760
    }
761 762 763
}

void CPPEditor::renameUsages()
764
{
765 766 767 768 769 770
    renameUsagesNow();
}

void CPPEditor::hideRenameNotification()
{
    Core::EditorManager::instance()->hideEditorInfoBar(QLatin1String("CppEditor.Rename"));
771 772 773 774
}

void CPPEditor::renameUsagesNow()
{
775
    if (Symbol *canonicalSymbol = markSymbols()) {
776 777 778 779 780 781 782 783
        if (canonicalSymbol->identifier() != 0) {
            Core::EditorManager::instance()->showEditorInfoBar(QLatin1String("CppEditor.Rename"),
                                                               tr("This change cannot be undone."),
                                                               tr("Yes, I know what I am doing."),
                                                               this, SLOT(hideRenameNotification()));

            m_modelManager->renameUsages(canonicalSymbol);
        }
784 785 786 787 788 789
    }
}

Symbol *CPPEditor::markSymbols()
{
    updateSemanticInfo(m_semanticHighlighter->semanticInfo(currentSource()));
790

791 792 793 794 795 796
    m_currentRenameSelection = -1;

    QList<QTextEdit::ExtraSelection> selections;

    SemanticInfo info = m_lastSemanticInfo;

797 798 799
    Symbol *canonicalSymbol = findCanonicalSymbol(textCursor(), info.doc, info.snapshot);
    if (canonicalSymbol) {
        TranslationUnit *unit = info.doc->translationUnit();
800

801 802 803 804
        const QList<int> references = m_modelManager->references(canonicalSymbol, info.doc, info.snapshot);
        foreach (int index, references) {
            unsigned line, column;
            unit->getTokenPosition(index, &line, &column);
805

806 807
            if (column)
                --column;  // adjust the column position.
808

809
            const int len = unit->tokenAt(index).f.length;
810

811 812 813
            QTextCursor cursor(document()->findBlockByNumber(line - 1));
            cursor.setPosition(cursor.position() + column);
            cursor.setPosition(cursor.position() + len, QTextCursor::KeepAnchor);
814

815 816 817 818
            QTextEdit::ExtraSelection sel;
            sel.format = m_occurrencesFormat;
            sel.cursor = cursor;
            selections.append(sel);
819
        }
Roberto Raggi's avatar
Roberto Raggi committed
820
    }
821 822 823

    setExtraSelections(CodeSemanticsSelection, selections);
    return canonicalSymbol;
Roberto Raggi's avatar
Roberto Raggi committed
824 825
}

826
void CPPEditor::renameSymbolUnderCursor()
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
827
{
Roberto Raggi's avatar
Roberto Raggi committed
828
    updateSemanticInfo(m_semanticHighlighter->semanticInfo(currentSource()));
829

Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
830 831 832 833 834 835
    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()
836
                && c.position() <= s.cursor.position()) {
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
837
            m_currentRenameSelection = i;
838
            m_renameSelections[i].format = m_occurrenceRenameFormat;
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
839 840 841 842
            setExtraSelections(CodeSemanticsSelection, m_renameSelections);
            break;
        }
    }
843 844

    if (m_renameSelections.isEmpty())
845
        renameUsages();
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
846 847
}

848 849
void CPPEditor::onContentsChanged(int position, int charsRemoved, int charsAdded)
{
850 851 852
    Q_UNUSED(position)
    Q_UNUSED(charsAdded)

853 854 855
    if (m_currentRenameSelection == -1)
        return;

856 857 858 859 860 861 862
    if (!m_inRename)
        abortRename();

    if (charsRemoved > 0)
        updateUses();
}

con's avatar
con committed
863 864 865 866 867
void CPPEditor::updateFileName()
{ }

void CPPEditor::jumpToMethod(int)
{
868
    QModelIndex index = m_proxyModel->mapToSource(m_methodCombo->view()->currentIndex());
con's avatar
con committed
869 870 871 872
    Symbol *symbol = m_overviewModel->symbolFromIndex(index);
    if (! symbol)
        return;

873
    openCppEditorAt(linkToSymbol(symbol));
con's avatar
con committed
874 875
}

876 877 878 879 880 881 882 883 884 885
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
886
        updateMethodBoxIndexNow();
887 888 889 890 891 892 893 894
    }
}

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

con's avatar
con committed
895 896
void CPPEditor::updateMethodBoxIndex()
{
Roberto Raggi's avatar
Roberto Raggi committed
897 898 899
    m_updateMethodBoxTimer->start(UPDATE_METHOD_BOX_INTERVAL);
}

900 901
void CPPEditor::highlightUses(const QList<SemanticInfo::Use> &uses,
                              QList<QTextEdit::ExtraSelection> *selections)
Roberto Raggi's avatar
Roberto Raggi committed
902
{
Roberto Raggi's avatar
Roberto Raggi committed
903
    bool isUnused = false;
Roberto Raggi's avatar
Roberto Raggi committed
904 905

    if (uses.size() == 1)
Roberto Raggi's avatar
Roberto Raggi committed
906
        isUnused = true;
Roberto Raggi's avatar
Roberto Raggi committed
907

Roberto Raggi's avatar
Roberto Raggi committed
908
    foreach (const SemanticInfo::Use &use, uses) {
Roberto Raggi's avatar
Roberto Raggi committed
909
        QTextEdit::ExtraSelection sel;
Roberto Raggi's avatar
Roberto Raggi committed
910

Roberto Raggi's avatar
Roberto Raggi committed
911
        if (isUnused)
912
            sel.format = m_occurrencesUnusedFormat;
Roberto Raggi's avatar
Roberto Raggi committed
913
        else
914
            sel.format = m_occurrencesFormat;
Roberto Raggi's avatar
Roberto Raggi committed
915

916
        const int anchor = document()->findBlockByNumber(use.line - 1).position() + use.column - 1;
Roberto Raggi's avatar
Roberto Raggi committed
917
        const int position = anchor + use.length;
Roberto Raggi's avatar
Roberto Raggi committed
918

919
        sel.cursor = QTextCursor(document());
Roberto Raggi's avatar
Roberto Raggi committed
920 921
        sel.cursor.setPosition(anchor);
        sel.cursor.setPosition(position, QTextCursor::KeepAnchor);
Roberto Raggi's avatar
Roberto Raggi committed
922

Roberto Raggi's avatar
Roberto Raggi committed
923
        selections->append(sel);
Roberto Raggi's avatar
Roberto Raggi committed
924 925 926
    }
}

Roberto Raggi's avatar
Roberto Raggi committed
927 928 929 930
void CPPEditor::updateMethodBoxIndexNow()
{
    m_updateMethodBoxTimer->stop();

con's avatar
con committed
931 932 933 934 935
    int line = 0, column = 0;
    convertPosition(position(), &line, &column);

    QModelIndex lastIndex;

936
    const int rc = m_overviewModel->rowCount();
con's avatar
con committed
937 938 939
    for (int row = 0; row < rc; ++row) {
        const QModelIndex index = m_overviewModel->index(row, 0, QModelIndex());
        Symbol *symbol = m_overviewModel->symbolFromIndex(index);
940
        if (symbol && symbol->line() > unsigned(line))
con's avatar
con committed
941 942 943 944 945 946
            break;
        lastIndex = index;
    }

    if (lastIndex.isValid()) {
        bool blocked = m_methodCombo->blockSignals(true);
947
        m_methodCombo->setCurrentIndex(m_proxyModel->mapFromSource(lastIndex).row());
948
        updateMethodBoxToolTip();
con's avatar
con committed
949 950
        (void) m_methodCombo->blockSignals(blocked);
    }
Thorbjørn Lindeijer's avatar
Thorbjørn Lindeijer committed
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969
}

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
970
    semanticRehighlight();
con's avatar
con committed
971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987
}

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)
{
988
    Function *declTy = declaration->type()->asFunctionType();
con's avatar
con committed
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 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
    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;

1033 1034 1035
    const Snapshot snapshot = m_modelManager->snapshot();

    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1036 1037 1038 1039 1040 1041 1042
    if (!doc)
        return;
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol || !lastSymbol->scope())
        return;

    Function *f = lastSymbol->asFunction();
1043
    if (!f) {
con's avatar
con committed
1044
        Scope *fs = lastSymbol->scope();
1045
        if (!fs->isFunctionScope())
con's avatar
con committed
1046 1047 1048 1049 1050 1051 1052
            fs = fs->enclosingFunctionScope();
        if (fs)
            f = fs->owner()->asFunction();
    }

    if (f) {
        TypeOfExpression typeOfExpression;
1053
        typeOfExpression.setSnapshot(m_modelManager->snapshot());
con's avatar
con committed
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069
        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)
1070
            openCppEditorAt(linkToSymbol(declaration));
1071
    } else if (lastSymbol->type()->isFunctionType()) {
con's avatar
con committed
1072
        if (Symbol *def = findDefinition(lastSymbol))
1073
            openCppEditorAt(linkToSymbol(def));
con's avatar
con committed
1074 1075 1076
    }
}

1077
CPPEditor::Link CPPEditor::findLinkAt(const QTextCursor &cursor,
1078
                                      bool resolveTarget)
con's avatar
con committed
1079
{
1080
    Link link;
1081

con's avatar
con committed
1082
    if (!m_modelManager)
1083
        return link;
con's avatar
con committed
1084

1085
    const Snapshot snapshot = m_modelManager->snapshot();
con's avatar
con committed
1086
    int line = 0, column = 0;
1087
    convertPosition(cursor.position(), &line, &column);
1088
    Document::Ptr doc = snapshot.value(file()->fileName());
con's avatar
con committed
1089
    if (!doc)
1090
        return link;
1091

1092
    QTextCursor tc = cursor;
1093

1094 1095 1096 1097 1098 1099 1100
    // 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);
    }

1101
    static TokenUnderCursor tokenUnderCursor;
1102 1103 1104 1105

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

1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
    // 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;
            }
        }
    }

1119 1120 1121
    if (tk.isNot(T_IDENTIFIER))
        return link;

1122 1123 1124 1125 1126
    // Find the last symbol up to the cursor position
    Symbol *lastSymbol = doc->findSymbolAt(line, column);
    if (!lastSymbol)
        return link;

1127 1128
    const int nameStart = tk.position();
    const int nameLength = tk.length();
1129
    const int endOfName = block.position() + nameStart + nameLength;
1130 1131

    const QString name = block.text().mid(nameStart, nameLength);
1132
    tc.setPosition(endOfName);
1133 1134

    // Evaluate the type of the expression under the cursor
con's avatar
con committed
1135 1136 1137
    ExpressionUnderCursor expressionUnderCursor;
    const QString expression = expressionUnderCursor(tc);
    TypeOfExpression typeOfExpression;
1138
    typeOfExpression.setSnapshot(snapshot);
con's avatar
con committed
1139 1140 1141 1142
    QList<TypeOfExpression::Result> resolvedSymbols =
            typeOfExpression(expression, doc, lastSymbol);

    if (!resolvedSymbols.isEmpty()) {
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
        TypeOfExpression::Result result = resolvedSymbols.first();

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

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

1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177
        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;
                }
            }
        }

1178
        if (Symbol *symbol = result.second) {
con's avatar
con committed
1179
            Symbol *def = 0;
1180
            if (resolveTarget && !lastSymbol->isFunction())
con's avatar
con committed
1181 1182
                def = findDefinition(symbol);

1183
            link = linkToSymbol(def ? def : symbol);