cppfindreferences.cpp 8.85 KB
Newer Older
Roberto Raggi's avatar
Roberto Raggi committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** 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.
**
** GNU Lesser General Public License Usage
**
** 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
**
**************************************************************************/

#include "cppfindreferences.h"
#include "cppmodelmanager.h"
#include "cpptoolsconstants.h"

#include <texteditor/basetexteditor.h>
#include <find/searchresultwindow.h>
#include <extensionsystem/pluginmanager.h>
#include <utils/filesearch.h>
#include <coreplugin/progressmanager/progressmanager.h>
#include <coreplugin/icore.h>

#include <ASTVisitor.h>
#include <AST.h>
#include <Control.h>
#include <Literals.h>
#include <TranslationUnit.h>
#include <Symbols.h>

#include <cplusplus/CppDocument.h>
#include <cplusplus/ExpressionUnderCursor.h>
#include <cplusplus/ResolveExpression.h>

#include <QtCore/QTime>
#include <QtCore/QtConcurrentRun>
#include <QtCore/QDir>

#include <qtconcurrent/runextensions.h>

using namespace CppTools::Internal;
using namespace CPlusPlus;

namespace {

struct Process: protected ASTVisitor
{
public:
    Process(QFutureInterface<Core::Utils::FileSearchResult> &future,
            Document::Ptr doc, const Snapshot &snapshot)
            : ASTVisitor(doc->control()),
              _future(future),
              _doc(doc),
              _snapshot(snapshot),
              _source(_doc->source())
    { }

    void operator()(Identifier *id, AST *ast)
    {
        _id = id;
        _currentSymbol = _doc->globalNamespace();
        _exprDoc = Document::create("<references>");
        accept(ast);
    }

protected:
    using ASTVisitor::visit;

    QString matchingLine(const Token &tk) const
    {
        const char *beg = _source.constData();
        const char *cp = beg + tk.offset;
        for (; cp != beg - 1; --cp) {
            if (*cp == '\n')
                break;
        }

        ++cp;

        const char *lineEnd = cp + 1;
        for (; *lineEnd; ++lineEnd) {
            if (*lineEnd == '\n')
                break;
        }

        const QString matchingLine = QString::fromUtf8(cp, lineEnd - cp);
        return matchingLine;

    }

    void reportResult(unsigned tokenIndex)
    {
        const Token &tk = tokenAt(tokenIndex);
        const QString lineText = matchingLine(tk);

        unsigned line, col;
        getTokenStartPosition(tokenIndex, &line, &col);

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

        int len = tk.f.length;

        _future.reportResult(Core::Utils::FileSearchResult(QDir::toNativeSeparators(_doc->fileName()),
                                                           line, lineText, col, len));
    }

    LookupContext currentContext() const
    {
        return LookupContext(_currentSymbol, _exprDoc, _doc, _snapshot);
    }

    virtual bool visit(ClassSpecifierAST *ast)
    {
        _currentSymbol = ast->symbol;
        return true;
    }

    virtual bool visit(NamespaceAST *ast)
    {
        _currentSymbol = ast->symbol;
        return true;
    }

    virtual bool visit(CompoundStatementAST *ast)
    {
        _currentSymbol = ast->symbol;
        return true;
    }

    virtual bool visit(FunctionDefinitionAST *ast)
    {
        _currentSymbol = ast->symbol;
        return true;
    }

    virtual bool visit(QualifiedNameAST *ast)
    {
        return true;
    }

    virtual bool visit(SimpleNameAST *ast)
    {
        Identifier *id = identifier(ast->identifier_token);
        if (id == _id) {
#if 0
            LookupContext context = currentContext();
            ResolveExpression resolveExpression(context);
            QList<ResolveExpression::Result> results = resolveExpression(ast);
            if (! results.isEmpty()) {
                ResolveExpression::Result result = results.first();
                Symbol *resolvedSymbol = result.second;
                qDebug() << "resolves to:" << resolvedSymbol->fileName() << resolvedSymbol->line();
            }
#endif
            reportResult(ast->identifier_token);
        }

        return false;
    }

    virtual bool visit(TemplateIdAST *ast)
    {
        Identifier *id = identifier(ast->identifier_token);
        if (id == _id)
            reportResult(ast->identifier_token);

        return true;
    }

private:
    QFutureInterface<Core::Utils::FileSearchResult> &_future;
    Identifier *_id;
    Document::Ptr _doc;
    Snapshot _snapshot;
    QByteArray _source;
    Symbol *_currentSymbol;
    Document::Ptr _exprDoc;
};

} // end of anonymous namespace

CppFindReferences::CppFindReferences(CppModelManager *modelManager)
    : _modelManager(modelManager),
      _resultWindow(ExtensionSystem::PluginManager::instance()->getObject<Find::SearchResultWindow>())
{
    m_watcher.setPendingResultsLimit(1);
    connect(&m_watcher, SIGNAL(resultReadyAt(int)), this, SLOT(displayResult(int)));
    connect(&m_watcher, SIGNAL(finished()), this, SLOT(searchFinished()));
}

CppFindReferences::~CppFindReferences()
{
}

static void find_helper(QFutureInterface<Core::Utils::FileSearchResult> &future,
                        QString word,
                        QString fileName,
                        Snapshot snapshot)
{
    QTime tm;
    tm.start();
    QStringList files(fileName);
    files += snapshot.dependsOn(fileName);
    qDebug() << "done in:" << tm.elapsed() << "number of files to parse:" << files.size();

    future.setProgressRange(0, files.size());

226 227
    const QByteArray literal = word.toLatin1();

Roberto Raggi's avatar
Roberto Raggi committed
228 229 230 231 232 233 234 235 236 237 238
    tm.start();
    for (int i = 0; i < files.size(); ++i) {
        const QString &fn = files.at(i);
        future.setProgressValueAndText(i, QFileInfo(fn).fileName());
        QFile f(fn);
        if (! f.open(QFile::ReadOnly))
            continue;

        const QString source = QTextStream(&f).readAll();
        const QByteArray preprocessedCode = snapshot.preprocessedCode(source, fn);
        Document::Ptr doc = snapshot.documentFromSource(preprocessedCode, fn);
239
        doc->tokenize();
Roberto Raggi's avatar
Roberto Raggi committed
240 241

        Control *control = doc->control();
242 243 244 245 246 247
        if (Identifier *id = control->findIdentifier(literal.constData(), literal.size())) {
            doc->check();
            TranslationUnit *unit = doc->translationUnit();
            Process process(future, doc, snapshot);
            process(id, unit->ast());
        }
Roberto Raggi's avatar
Roberto Raggi committed
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
    }
    future.setProgressValue(files.size());
}

void CppFindReferences::findAll(const QString &fileName, const QString &text)
{
    _resultWindow->clearContents();
    _resultWindow->popup(true);

    Core::ProgressManager *progressManager = Core::ICore::instance()->progressManager();

    const Snapshot snapshot = _modelManager->snapshot();

    QFuture<Core::Utils::FileSearchResult> result =
            QtConcurrent::run(&find_helper, text, fileName, snapshot);

    m_watcher.setFuture(result);

    Core::FutureProgress *progress = progressManager->addTask(result, tr("Searching..."),
                                                              CppTools::Constants::TASK_INDEX,
                                                              Core::ProgressManager::CloseOnSuccess);

    connect(progress, SIGNAL(clicked()), _resultWindow, SLOT(popup()));
}

void CppFindReferences::displayResult(int index)
{
    Core::Utils::FileSearchResult result = m_watcher.future().resultAt(index);
    Find::ResultWindowItem *item = _resultWindow->addResult(result.fileName,
                                                            result.lineNumber,
                                                            result.matchingLine,
                                                            result.matchStart,
                                                            result.matchLength);
    if (item)
        connect(item, SIGNAL(activated(const QString&,int,int)),
                this, SLOT(openEditor(const QString&,int,int)));
}

void CppFindReferences::searchFinished()
{
    emit changed();
}

void CppFindReferences::openEditor(const QString &fileName, int line, int column)
{
    TextEditor::BaseTextEditor::openEditorAt(fileName, line, column);
}