/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
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** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
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** 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
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**
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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**
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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****************************************************************************/

/*
  generator.cpp
*/
#include <QtCore>
#include <qdir.h>
#include <qdebug.h>
#include "codemarker.h"
#include "config.h"
#include "doc.h"
#include "editdistance.h"
#include "generator.h"
#include "node.h"
#include "openedlist.h"
#include "quoter.h"
#include "separator.h"
#include "tokenizer.h"

QT_BEGIN_NAMESPACE

QList<Generator *> Generator::generators;
QMap<QString, QMap<QString, QString> > Generator::fmtLeftMaps;
QMap<QString, QMap<QString, QString> > Generator::fmtRightMaps;
QMap<QString, QStringList> Generator::imgFileExts;
QSet<QString> Generator::outputFormats;
QStringList Generator::imageFiles;
QStringList Generator::imageDirs;
QString Generator::outDir;
QString Generator::project;

static void singularPlural(Text& text, const NodeList& nodes)
{
    if (nodes.count() == 1)
        text << " is";
    else
        text << " are";
}

Generator::Generator()
    : amp("&amp;"),
      lt("&lt;"),
      gt("&gt;"),
      quot("&quot;"),
      tag("</?@[^>]*>")
{
    generators.prepend(this);
}

Generator::~Generator()
{
    generators.removeAll(this);
}

void Generator::initializeGenerator(const Config & /* config */)
{
}

void Generator::terminateGenerator()
{
}

void Generator::initialize(const Config &config)
{
    outputFormats = config.getStringSet(CONFIG_OUTPUTFORMATS);
    if (!outputFormats.isEmpty()) {
        outDir = config.getString(CONFIG_OUTPUTDIR);
        if (outDir.isEmpty())
            config.lastLocation().fatal(tr("No output directory specified in configuration file"));

        QDir dirInfo;
        if (dirInfo.exists(outDir)) {
            if (!Config::removeDirContents(outDir))
                config.lastLocation().error(tr("Cannot empty output directory '%1'").arg(outDir));
        }
        else {
            if (!dirInfo.mkpath(outDir))
                config.lastLocation().fatal(tr("Cannot create output directory '%1'").arg(outDir));
        }

        if (!dirInfo.mkdir(outDir + "/images"))
            config.lastLocation().fatal(tr("Cannot create output directory '%1'")
                                        .arg(outDir + "/images"));
    }

    imageFiles = config.getStringList(CONFIG_IMAGES);
    imageDirs = config.getStringList(CONFIG_IMAGEDIRS);

    QString imagesDotFileExtensions = CONFIG_IMAGES + Config::dot + CONFIG_FILEEXTENSIONS;
    QSet<QString> formats = config.subVars(imagesDotFileExtensions);
    QSet<QString>::ConstIterator f = formats.begin();
    while (f != formats.end()) {
        imgFileExts[*f] = config.getStringList(imagesDotFileExtensions +
                                               Config::dot + *f);
        ++f;
    }

    QList<Generator *>::ConstIterator g = generators.begin();
    while (g != generators.end()) {
        if (outputFormats.contains((*g)->format())) {
            (*g)->initializeGenerator(config);
            QStringList extraImages = config.getStringList(CONFIG_EXTRAIMAGES +
                                                           Config::dot +
                                                           (*g)->format());
            QStringList::ConstIterator e = extraImages.begin();
            while (e != extraImages.end()) {
                QString userFriendlyFilePath;
                QString filePath = Config::findFile(config.lastLocation(),
                                                    imageFiles, imageDirs, *e,
                                                    imgFileExts[(*g)->format()],
                                                    userFriendlyFilePath);
                if (!filePath.isEmpty())
                    Config::copyFile(config.lastLocation(),
                                     filePath,
                                     userFriendlyFilePath,
                                     (*g)->outputDir() +
                                     "/images");
                ++e;
            }
        }
        ++g;
    }

    QRegExp secondParamAndAbove("[\2-\7]");
    QSet<QString> formattingNames = config.subVars(CONFIG_FORMATTING);
    QSet<QString>::ConstIterator n = formattingNames.begin();
    while (n != formattingNames.end()) {
        QString formattingDotName = CONFIG_FORMATTING + Config::dot + *n;

        QSet<QString> formats = config.subVars(formattingDotName);
        QSet<QString>::ConstIterator f = formats.begin();
        while (f != formats.end()) {
            QString def = config.getString(formattingDotName +
                                           Config::dot + *f);
            if (!def.isEmpty()) {
                int numParams = Config::numParams(def);
                int numOccs = def.count("\1");

                if (numParams != 1) {
                    config.lastLocation().warning(tr("Formatting '%1' must "
                                                     "have exactly one "
                                                     "parameter (found %2)")
                                                  .arg(*n).arg(numParams));
                }
                else if (numOccs > 1) {
                    config.lastLocation().fatal(tr("Formatting '%1' must "
                                                   "contain exactly one "
                                                   "occurrence of '\\1' "
                                                   "(found %2)")
                                                .arg(*n).arg(numOccs));
                }
                else {
                    int paramPos = def.indexOf("\1");
                    fmtLeftMaps[*f].insert(*n, def.left(paramPos));
                    fmtRightMaps[*f].insert(*n, def.mid(paramPos + 1));
                }
            }
            ++f;
        }
        ++n;
    }

    project = config.getString(CONFIG_PROJECT);
}

void Generator::terminate()
{
    QList<Generator *>::ConstIterator g = generators.begin();
    while (g != generators.end()) {
        if (outputFormats.contains((*g)->format()))
            (*g)->terminateGenerator();
        ++g;
    }

    fmtLeftMaps.clear();
    fmtRightMaps.clear();
    imgFileExts.clear();
    imageFiles.clear();
    imageDirs.clear();
    outDir = "";
}

Generator *Generator::generatorForFormat(const QString& format)
{
    QList<Generator *>::ConstIterator g = generators.begin();
    while (g != generators.end()) {
        if ((*g)->format() == format)
            return *g;
        ++g;
    }
    return 0;
}

void Generator::startText(const Node * /* relative */,
                          CodeMarker * /* marker */)
{
}

void Generator::endText(const Node * /* relative */,
                        CodeMarker * /* marker */)
{
}

int Generator::generateAtom(const Atom * /* atom */,
                            const Node * /* relative */,
                            CodeMarker * /* marker */)
{
    return 0;
}

void Generator::generateClassLikeNode(const InnerNode * /* classe */,
                                      CodeMarker * /* marker */)
{
}

void Generator::generateFakeNode(const FakeNode * /* fake */,
                                 CodeMarker * /* marker */)
{
}

bool Generator::generateText(const Text& text,
                             const Node *relative,
                             CodeMarker *marker)
{
    if (text.firstAtom() != 0) {
        int numAtoms = 0;
        startText(relative, marker);
        generateAtomList(text.firstAtom(),
                         relative,
                         marker,
                         true,
                         numAtoms);
        endText(relative, marker);
        return true;
    }
    return false;
}

#ifdef QDOC_QML
/*!
  Extract sections of markup text surrounded by \e qmltext
  and \e endqmltext and output them.
 */
bool Generator::generateQmlText(const Text& text,
                                const Node *relative,
                                CodeMarker *marker,
                                const QString& /* qmlName */ )
{
    const Atom* atom = text.firstAtom();
    if (atom == 0)
        return false;

    startText(relative, marker);
    while (atom) {
        if (atom->type() != Atom::QmlText)
            atom = atom->next();
        else {
            atom = atom->next();
            while (atom && (atom->type() != Atom::EndQmlText)) {
                int n = 1 + generateAtom(atom, relative, marker);
                while (n-- > 0)
                    atom = atom->next();
            }
        }
    }
    endText(relative, marker);
    return true;
}
#endif

void Generator::generateBody(const Node *node, CodeMarker *marker)
{
    bool quiet = false;

    if (node->type() == Node::Function) {
#if 0        
        const FunctionNode *func = (const FunctionNode *) node;
        if (func->isOverload() && func->metaness() != FunctionNode::Ctor)
            generateOverload(node, marker);
#endif        
    }
    else if (node->type() == Node::Fake) {
        const FakeNode *fake = static_cast<const FakeNode *>(node);
        if (fake->subType() == Node::Example)
            generateExampleFiles(fake, marker);
        else if (fake->subType() == Node::File)
            quiet = true;
    }

    if (node->doc().isEmpty()) {
        if (!quiet && !node->isReimp()) // ### might be unnecessary
            node->location().warning(tr("No documentation for '%1'")
                            .arg(marker->plainFullName(node)));
    }
    else {
        if (node->type() == Node::Function) {
            const FunctionNode *func = static_cast<const FunctionNode *>(node);
            if (func->reimplementedFrom() != 0)
                generateReimplementedFrom(func, marker);
        }
        
        if (!generateText(node->doc().body(), node, marker))
            if (node->isReimp())
                return;

        if (node->type() == Node::Enum) {
            const EnumNode *enume = (const EnumNode *) node;

            QSet<QString> definedItems;
            QList<EnumItem>::ConstIterator it = enume->items().begin();
            while (it != enume->items().end()) {
                definedItems.insert((*it).name());
                ++it;
            }

            QSet<QString> documentedItems = enume->doc().enumItemNames().toSet();
            QSet<QString> allItems = definedItems + documentedItems;
            if (allItems.count() > definedItems.count() ||
                 allItems.count() > documentedItems.count()) {
                QSet<QString>::ConstIterator a = allItems.begin();
                while (a != allItems.end()) {
                    if (!definedItems.contains(*a)) {
                        QString details;
                        QString best = nearestName(*a, definedItems);
                        if (!best.isEmpty() && !documentedItems.contains(best))
                            details = tr("Maybe you meant '%1'?").arg(best);

                        node->doc().location().warning(
                            tr("No such enum item '%1' in %2").arg(*a).arg(marker->plainFullName(node)),
                            details);
                    }
                    else if (!documentedItems.contains(*a)) {
                        node->doc().location().warning(
                            tr("Undocumented enum item '%1' in %2").arg(*a).arg(marker->plainFullName(node)));
                    }
                    ++a;
                }
            }
        }
        else if (node->type() == Node::Function) {
            const FunctionNode *func = static_cast<const FunctionNode *>(node);
            QSet<QString> definedParams;
            QList<Parameter>::ConstIterator p = func->parameters().begin();
            while (p != func->parameters().end()) {
                if ((*p).name().isEmpty() && (*p).leftType() != QLatin1String("...")
                        && func->name() != QLatin1String("operator++")
                        && func->name() != QLatin1String("operator--")) {
                    node->doc().location().warning(tr("Missing parameter name"));
                }
                else {
                    definedParams.insert((*p).name());
                }
                ++p;
            }

            QSet<QString> documentedParams = func->doc().parameterNames();
            QSet<QString> allParams = definedParams + documentedParams;
            if (allParams.count() > definedParams.count()
                    || allParams.count() > documentedParams.count()) {
                QSet<QString>::ConstIterator a = allParams.begin();
                while (a != allParams.end()) {
                    if (!definedParams.contains(*a)) {
                        QString details;
                        QString best = nearestName(*a, definedParams);
                        if (!best.isEmpty())
                            details = tr("Maybe you meant '%1'?").arg(best);

                        node->doc().location().warning(
                            tr("No such parameter '%1' in %2").arg(*a).arg(marker->plainFullName(node)),
                            details);
                    }
                    else if (!(*a).isEmpty() && !documentedParams.contains(*a)) {
                        bool needWarning = (func->status() > Node::Obsolete);
                        if (func->overloadNumber() > 1) {
                            FunctionNode *primaryFunc =
                                    func->parent()->findFunctionNode(func->name());
                            if (primaryFunc) {
                                foreach (const Parameter &param,
                                         primaryFunc->parameters()) {
                                    if (param.name() == *a) {
                                        needWarning = false;
                                        break;
                                    }
                                }
                            }
                        }
                        if (needWarning && !func->isReimp())
                            node->doc().location().warning(
                                tr("Undocumented parameter '%1' in %2")
                                .arg(*a).arg(marker->plainFullName(node)));
                    }
                    ++a;
                }
            }
/* Something like this return value check should be implemented at some point. */
            if (func->status() > Node::Obsolete && func->returnType() == "bool"
                    && func->reimplementedFrom() == 0 && !func->isOverload()) {
                QString body = func->doc().body().toString();
                if (!body.contains("return", Qt::CaseInsensitive))
                    node->doc().location().warning(tr("Undocumented return value"));
            }
#if 0
            // Now we put this at the top, before the other text.
            if (func->reimplementedFrom() != 0)
                generateReimplementedFrom(func, marker);
#endif            
        }
    }

    if (node->type() == Node::Fake) {
        const FakeNode *fake = static_cast<const FakeNode *>(node);
        if (fake->subType() == Node::File) {
            Text text;
            Quoter quoter;
            Doc::quoteFromFile(fake->doc().location(), quoter, fake->name());
            QString code = quoter.quoteTo(fake->location(), "", "");
            text << Atom(Atom::Code, code);
            generateText(text, fake, marker);
        }
    }
}

void Generator::generateAlsoList(const Node *node, CodeMarker *marker)
{
    QList<Text> alsoList = node->doc().alsoList();
    supplementAlsoList(node, alsoList);

    if (!alsoList.isEmpty()) {
        Text text;
        text << Atom::ParaLeft << "See also ";

        for (int i = 0; i < alsoList.size(); ++i)
            text << alsoList.at(i) << separator(i, alsoList.size());

        text << Atom::ParaRight;
        generateText(text, node, marker);
    }
}

void Generator::generateInherits(const ClassNode *classe, CodeMarker *marker)
{
    QList<RelatedClass>::ConstIterator r;
    int index;

    if (!classe->baseClasses().isEmpty()) {
        Text text;
        text << Atom::ParaLeft << "Inherits ";

        r = classe->baseClasses().begin();
        index = 0;
        while (r != classe->baseClasses().end()) {
            text << Atom(Atom::LinkNode, CodeMarker::stringForNode((*r).node))
                 << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
                 << Atom(Atom::String, (*r).dataTypeWithTemplateArgs)
                 << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);

            if ((*r).access == Node::Protected) {
                text << " (protected)";
            }
            else if ((*r).access == Node::Private) {
                text << " (private)";
            }
            text << separator(index++, classe->baseClasses().count());
            ++r;
        }
        text << Atom::ParaRight;
        generateText(text, classe, marker);
    }
}

#ifdef QDOC_QML
/*!
 */
void Generator::generateQmlInherits(const QmlClassNode* , CodeMarker* )
{
    // stub.
}
#endif

void Generator::generateInheritedBy(const ClassNode *classe,
                                    CodeMarker *marker)
{
    if (!classe->derivedClasses().isEmpty()) {
        Text text;
        text << Atom::ParaLeft << "Inherited by ";

        appendSortedNames(text, classe, classe->derivedClasses(), marker);
        text << Atom::ParaRight;
        generateText(text, classe, marker);
    }
}

void Generator::generateExampleFiles(const FakeNode *fake, CodeMarker *marker)
{
    if (fake->childNodes().isEmpty())
        return;

    OpenedList openedList(OpenedList::Bullet);

    Text text;
    text << Atom::ParaLeft << "Files:" << Atom::ParaRight
         << Atom(Atom::ListLeft, openedList.styleString());
    foreach (const Node *child, fake->childNodes()) {
        QString exampleFile = child->name();
        openedList.next();
        text << Atom(Atom::ListItemNumber, openedList.numberString())
             << Atom(Atom::ListItemLeft, openedList.styleString())
             << Atom::ParaLeft
             << Atom(Atom::Link, exampleFile)
             << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
             << exampleFile
             << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK)
             << Atom::ParaRight
             << Atom(Atom::ListItemRight, openedList.styleString());
    }
    text << Atom(Atom::ListRight, openedList.styleString());
    generateText(text, fake, marker);
}

void Generator::generateModuleWarning(const ClassNode *classe,
                                      CodeMarker *marker)
{
    QString module = classe->moduleName();
    if (!module.isEmpty()) {
        Text text;
        if (!editionModuleMap["Console"].contains(module)) {
            text << Atom::ParaLeft
                 << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD)
                 << "This class is not part of the Qt Console Edition."
                 << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD)
                 << Atom::ParaRight;
        }
        else if (!editionModuleMap["DesktopLight"].contains(module)) {
            text << Atom::ParaLeft
                 << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD)
                 << "This class is not part of the Qt Desktop Light Edition."
                 << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD)
                 << Atom::ParaRight;
        }
        else if (module == "Qt3Support") {
            text << Atom::ParaLeft
                 << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD)
                 << "Note to Qt Desktop Light Edition users:"
                 << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD)
                 << " This class is only available in the "
                 << Atom(Atom::AutoLink, "Qt Desktop Edition")
                 << "." << Atom::ParaRight;
        }

        generateText(text, classe, marker);
    }
}

QString Generator::indent(int level, const QString& markedCode)
{
    if (level == 0)
        return markedCode;

    QString t;
    int column = 0;

    int i = 0;
    while (i < (int) markedCode.length()) {
        if (markedCode.at(i) == QLatin1Char('<')) {
            while (i < (int) markedCode.length()) {
                t += markedCode.at(i++);
                if (markedCode.at(i - 1) == QLatin1Char('>'))
                    break;
            }
        }
        else {
            if (markedCode.at(i) == QLatin1Char('\n')) {
                column = 0;
            }
            else {
                if (column == 0) {
                    for (int j = 0; j < level; j++)
                        t += QLatin1Char(' ');
                }
                column++;
            }
            t += markedCode.at(i++);
        }
    }
    return t;
}

QString Generator::plainCode(const QString& markedCode)
{
    QString t = markedCode;
    t.replace(tag, QString());
    t.replace(quot, QLatin1String("\""));
    t.replace(gt, QLatin1String(">"));
    t.replace(lt, QLatin1String("<"));
    t.replace(amp, QLatin1String("&"));
    return t;
}

QString Generator::typeString(const Node *node)
{
    switch (node->type()) {
    case Node::Namespace:
        return "namespace";
    case Node::Class:
        return "class";
    case Node::Fake:
    default:
        return "documentation";
    case Node::Enum:
        return "enum";
    case Node::Typedef:
        return "typedef";
    case Node::Function:
        return "function";
    case Node::Property:
        return "property";
    }
}

QString Generator::imageFileName(const Node *relative, const QString& fileBase)
{
    QString userFriendlyFilePath;
    QString filePath = Config::findFile(
        relative->doc().location(), imageFiles, imageDirs, fileBase,
        imgFileExts[format()], userFriendlyFilePath);

    if (filePath.isEmpty())
        return QString();

    return QLatin1String("images/")
           + Config::copyFile(relative->doc().location(),
                              filePath, userFriendlyFilePath,
                              outputDir() + QLatin1String("/images"));
}

void Generator::setImageFileExtensions(const QStringList& extensions)
{
    imgFileExts[format()] = extensions;
}

void Generator::unknownAtom(const Atom *atom)
{
    Location::internalError(tr("unknown atom type '%1' in %2 generator")
                            .arg(atom->typeString()).arg(format()));
}

bool Generator::matchAhead(const Atom *atom, Atom::Type expectedAtomType)
{
    return atom->next() != 0 && atom->next()->type() == expectedAtomType;
}

void Generator::supplementAlsoList(const Node *node, QList<Text> &alsoList)
{
    if (node->type() == Node::Function) {
        const FunctionNode *func = static_cast<const FunctionNode *>(node);
        if (func->overloadNumber() == 1) {
            QString alternateName;
            const FunctionNode *alternateFunc = 0;

            if (func->name().startsWith("set") && func->name().size() >= 4) {
                alternateName = func->name()[3].toLower();
                alternateName += func->name().mid(4);
                alternateFunc = func->parent()->findFunctionNode(alternateName);

                if (!alternateFunc) {
                    alternateName = "is" + func->name().mid(3);
                    alternateFunc = func->parent()->findFunctionNode(alternateName);
                    if (!alternateFunc) {
                        alternateName = "has" + func->name().mid(3);
                        alternateFunc = func->parent()->findFunctionNode(alternateName);
                    }
                }
            }
            else if (!func->name().isEmpty()) {
                alternateName = "set";
                alternateName += func->name()[0].toUpper();
                alternateName += func->name().mid(1);
                alternateFunc = func->parent()->findFunctionNode(alternateName);
            }

            if (alternateFunc && alternateFunc->access() != Node::Private) {
                int i;
                for (i = 0; i < alsoList.size(); ++i) {
                    if (alsoList.at(i).toString().contains(alternateName))
                        break;
                }

                if (i == alsoList.size()) {
                    alternateName += "()";

                    Text also;
                    also << Atom(Atom::Link, alternateName)
                         << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
                         << alternateName
                         << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);
                    alsoList.prepend(also);
                }
            }
        }
    }
}

QMap<QString, QString>& Generator::formattingLeftMap()
{
    return fmtLeftMaps[format()];
}

QMap<QString, QString>& Generator::formattingRightMap()
{
    return fmtRightMaps[format()];
}

QString Generator::trimmedTrailing(const QString &string)
{
    QString trimmed = string;
    while (trimmed.length() > 0 && trimmed[trimmed.length() - 1].isSpace())
        trimmed.truncate(trimmed.length() - 1);
    return trimmed;
}

void Generator::generateStatus(const Node *node, CodeMarker *marker)
{
    Text text;

    switch (node->status()) {
    case Node::Commendable:
    case Node::Main:
        break;
    case Node::Preliminary:
        text << Atom::ParaLeft
             << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD)
             << "This "
             << typeString(node)
             << " is under development and is subject to change."
             << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD)
             << Atom::ParaRight;
        break;
    case Node::Deprecated:
        text << Atom::ParaLeft;
        if (node->isInnerNode())
            text << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD);
        text << "This " << typeString(node) << " is deprecated.";
        if (node->isInnerNode())
            text << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD);
        text << Atom::ParaRight;
        break;
    case Node::Obsolete:
        text << Atom::ParaLeft;
        if (node->isInnerNode())
            text << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD);
        text << "This " << typeString(node) << " is obsolete.";
        if (node->isInnerNode())
            text << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD);
        text << " It is provided to keep old source code working. "
             << "We strongly advise against "
             << "using it in new code." << Atom::ParaRight;
        break;
    case Node::Compat:
        // reimplemented in HtmlGenerator subclass
        if (node->isInnerNode()) {
            text << Atom::ParaLeft
                 << Atom(Atom::FormattingLeft, ATOM_FORMATTING_BOLD)
                 << "This "
                 << typeString(node)
                 << " is part of the Qt 3 compatibility layer."
                 << Atom(Atom::FormattingRight, ATOM_FORMATTING_BOLD)
                 << " It is provided to keep old source code working. "
                 << "We strongly advise against "
                 << "using it in new code. See "
                 << Atom(Atom::AutoLink, "Porting to Qt 4")
                 << " for more information."
                 << Atom::ParaRight;
        }
        break;
    case Node::Internal:
    default:
        break;
    }
    generateText(text, node, marker);
}

void Generator::generateThreadSafeness(const Node *node, CodeMarker *marker)
{
    Text text;
    Text theStockLink;
    Node::ThreadSafeness threadSafeness = node->threadSafeness();

    Text rlink;
    rlink << Atom(Atom::Link,"reentrant")
          << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
          << "reentrant"
          << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);

    Text tlink;
    tlink << Atom(Atom::Link,"thread-safe")
          << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
          << "thread-safe"
          << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);

    switch (threadSafeness) {
    case Node::UnspecifiedSafeness:
        break;
    case Node::NonReentrant:
        text << Atom::ParaLeft
             << Atom(Atom::FormattingLeft,ATOM_FORMATTING_BOLD)
             << "Warning:"
             << Atom(Atom::FormattingRight,ATOM_FORMATTING_BOLD)
             << " This "
             << typeString(node)
             << " is not "
             << rlink
             << "."
             << Atom::ParaRight;
        break;
    case Node::Reentrant:
    case Node::ThreadSafe:
        text << Atom::ParaLeft
             << Atom(Atom::FormattingLeft,ATOM_FORMATTING_BOLD)
             << "Note:"
             << Atom(Atom::FormattingRight,ATOM_FORMATTING_BOLD)
             << " ";

        if (node->isInnerNode()) {
            const InnerNode* innerNode = static_cast<const InnerNode*>(node);
            text << "All functions in this "
                 << typeString(node)
                 << " are ";
            if (threadSafeness == Node::ThreadSafe)
                text << tlink;
            else
                text << rlink;

            bool exceptions = false;
            NodeList reentrant;
            NodeList threadsafe;
            NodeList nonreentrant;
            NodeList::ConstIterator c = innerNode->childNodes().begin();
            while (c != innerNode->childNodes().end()) {
                switch ((*c)->threadSafeness()) {
                case Node::Reentrant:
                    reentrant.append(*c);
                    if (threadSafeness == Node::ThreadSafe)
                        exceptions = true;
                    break;
                case Node::ThreadSafe:
                    threadsafe.append(*c);
                    if (threadSafeness == Node::Reentrant)
                        exceptions = true;
                    break;
                case Node::NonReentrant:
                    nonreentrant.append(*c);
                    exceptions = true;
                    break;
                default:
                    break;
                }
                ++c;
            }
            if (!exceptions) 
                text << ".";
            else if (threadSafeness == Node::Reentrant) {
                if (nonreentrant.isEmpty()) {
                    if (!threadsafe.isEmpty()) {
                        text << ", but ";
                        appendFullNames(text,threadsafe,innerNode,marker);
                        singularPlural(text,threadsafe);
                        text << " also " << tlink << ".";
                    }
                    else
                        text << ".";
                }
                else {
                    text << ", except for ";
                    appendFullNames(text,nonreentrant,innerNode,marker);
                    text << ", which";
                    singularPlural(text,nonreentrant);
                    text << " nonreentrant.";
                    if (!threadsafe.isEmpty()) {
                        text << " ";
                        appendFullNames(text,threadsafe,innerNode,marker);
                        singularPlural(text,threadsafe);
                        text << " " << tlink << ".";
                    }
                }
            }
            else { // thread-safe
                if (!nonreentrant.isEmpty() || !reentrant.isEmpty()) {
                    text << ", except for ";
                    if (!reentrant.isEmpty()) {
                        appendFullNames(text,reentrant,innerNode,marker);
                        text << ", which";
                        singularPlural(text,reentrant);
                        text << " only " << rlink;
                        if (!nonreentrant.isEmpty())
                            text << ", and ";
                    }
                    if (!nonreentrant.isEmpty()) {
                        appendFullNames(text,nonreentrant,innerNode,marker);
                        text << ", which";
                        singularPlural(text,nonreentrant);
                        text << " nonreentrant.";
                    }
                    text << ".";
                }
            }
        }
        else {
            text << "This " << typeString(node) << " is ";
            if (threadSafeness == Node::ThreadSafe)
                text << tlink;
            else
                text << rlink;
            text << ".";
        }
        text << Atom::ParaRight;
    }
    generateText(text,node,marker);
}

void Generator::generateSince(const Node *node, CodeMarker *marker)
{
    if (!node->since().isEmpty()) {
        Text text;
        text << Atom::ParaLeft
             << "This "
             << typeString(node)
             << " was introduced in ";
        if (project.isEmpty())
             text << "version";
        else
             text << project;
        text << " " << node->since() << "." << Atom::ParaRight;
        generateText(text, node, marker);
    }
}

/*!
  No longer in use.
 */
void Generator::generateOverload(const Node *node, CodeMarker *marker)
{
    Text text;
    text << Atom::ParaLeft
         << "This function overloads ";
    QString t = node->name() + "()";
    text << Atom::AutoLink << t 
         << Atom::ParaRight;
    generateText(text, node, marker);
}

void Generator::generateReimplementedFrom(const FunctionNode *func,
                                          CodeMarker *marker)
{
    if (func->reimplementedFrom() != 0) {
        const FunctionNode *from = func->reimplementedFrom();
        if (from->access() != Node::Private &&
            from->parent()->access() != Node::Private) {
            Text text;
            text << Atom::ParaLeft << "Reimplemented from ";
            QString fullName =  from->parent()->name() + "::" + from->name() + "()";
            appendFullName(text, from->parent(), fullName, from);
            text << "." << Atom::ParaRight;
            generateText(text, func, marker);
        }
    }
}

const Atom *Generator::generateAtomList(const Atom *atom,
                                        const Node *relative,
                                        CodeMarker *marker,
                                        bool generate,
                                        int &numAtoms)
{
    while (atom) {
        if (atom->type() == Atom::FormatIf) {
            int numAtoms0 = numAtoms;
            bool rightFormat = canHandleFormat(atom->string());
            atom = generateAtomList(atom->next(),
                                    relative,
                                    marker,
                                    generate && rightFormat,
                                    numAtoms);
            if (!atom)
                return 0;

            if (atom->type() == Atom::FormatElse) {
                ++numAtoms;
                atom = generateAtomList(atom->next(),
                                        relative,
                                        marker,
                                        generate && !rightFormat,
                                        numAtoms);
                if (!atom)
                    return 0;
            }

            if (atom->type() == Atom::FormatEndif) {
                if (generate && numAtoms0 == numAtoms) {
                    relative->location().warning(tr("Output format %1 not handled")
                                                 .arg(format()));
                    Atom unhandledFormatAtom(Atom::UnhandledFormat, format());
                    generateAtomList(&unhandledFormatAtom,
                                     relative,
                                     marker,
                                     generate,
                                     numAtoms);
                }
                atom = atom->next();
            }
        }
        else if (atom->type() == Atom::FormatElse ||
                 atom->type() == Atom::FormatEndif) {
            return atom;
        }
        else {
            int n = 1;
            if (generate) {
                n += generateAtom(atom, relative, marker);
                numAtoms += n;
            }
            while (n-- > 0)
                atom = atom->next();
        }
    }
    return 0;
}

void Generator::appendFullName(Text& text,
                               const Node *apparentNode,
                               const Node *relative,
                               CodeMarker *marker,
                               const Node *actualNode)
{
    if (actualNode == 0)
        actualNode = apparentNode;
    text << Atom(Atom::LinkNode, CodeMarker::stringForNode(actualNode))
         << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
         << Atom(Atom::String, marker->plainFullName(apparentNode, relative))
         << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);
}

void Generator::appendFullName(Text& text,
                               const Node *apparentNode,
                               const QString& fullName,
                               const Node *actualNode)
{
    if (actualNode == 0)
        actualNode = apparentNode;
    text << Atom(Atom::LinkNode, CodeMarker::stringForNode(actualNode))
         << Atom(Atom::FormattingLeft, ATOM_FORMATTING_LINK)
         << Atom(Atom::String, fullName)
         << Atom(Atom::FormattingRight, ATOM_FORMATTING_LINK);
}

void Generator::appendFullNames(Text& text,
                                const NodeList& nodes,
                                const Node* relative,
                                CodeMarker* marker)
{
    NodeList::ConstIterator n = nodes.begin();
    int index = 0;
    while (n != nodes.end()) {
        appendFullName(text,*n,relative,marker);
        text << comma(index++,nodes.count());
        ++n;
    }
}

void Generator::appendSortedNames(Text& text,
                                  const ClassNode *classe,
                                  const QList<RelatedClass> &classes,
                                  CodeMarker *marker)
{
    QList<RelatedClass>::ConstIterator r;
    QMap<QString,Text> classMap;
    int index = 0;

    r = classes.begin();
    while (r != classes.end()) {
        if ((*r).node->access() == Node::Public &&
            (*r).node->status() != Node::Internal
            && !(*r).node->doc().isEmpty()) {
            Text className;
            appendFullName(className, (*r).node, classe, marker);
            classMap[className.toString().toLower()] = className;
        }
        ++r;
    }

    QStringList classNames = classMap.keys();
    classNames.sort();

    foreach (const QString &className, classNames) {
        text << classMap[className];
        text << separator(index++, classNames.count());
    }
}

int Generator::skipAtoms(const Atom *atom, Atom::Type type) const
{
    int skipAhead = 0;
    atom = atom->next();
    while (atom != 0 && atom->type() != type) {
        skipAhead++;
        atom = atom->next();
    }
    return skipAhead;
}

QString Generator::fullName(const Node *node,
                            const Node *relative,
                            CodeMarker *marker) const
{
    if (node->type() == Node::Fake)
        return static_cast<const FakeNode *>(node)->title();
    else if (node->type() == Node::Class &&
        !(static_cast<const ClassNode *>(node))->serviceName().isEmpty())
        return (static_cast<const ClassNode *>(node))->serviceName();
    else
        return marker->plainFullName(node, relative);
}

QT_END_NAMESPACE