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#include <QMetaObject>

#include <QDebug>

#include "codemarker.h"

#include "config.h"

#include "node.h"

#include <stdio.h>

QT_BEGIN_NAMESPACE

QString CodeMarker::defaultLang;

QList<CodeMarker *> CodeMarker::markers;

/*!

  When a code marker constructs itself, it puts itself into

  the static list of code markers. All the code markers in

  the static list get initialized in initialize(), which is

  not called until after the qdoc configuration file has

  been read.

 */

CodeMarker::CodeMarker()

    : slow(false)

{

    markers.prepend(this);

}

/*!

  When a code marker destroys itself, it removes itself from

  the static list of code markers.

 */

CodeMarker::~CodeMarker()

{

    markers.removeAll(this);

}

/*!

  The only thing a code market initializes is its \e{slow}

  flag. The \e{slow} flag indicates whether the operations

  that slow down qdoc are to be performed or not. It is

  turned off by default. 

 */

void CodeMarker::initializeMarker(const Config &config)

{

    slow = config.getBool(QLatin1String(CONFIG_SLOW));

}

/*!

  Terminating a code marker is trivial.

 */

void CodeMarker::terminateMarker()

{

    // nothing.

}

/*!

  All the code markers in the static list are initialized

  here, after the qdoc configuration file has been loaded.

 */

void CodeMarker::initialize(const Config& config)

{

    defaultLang = config.getString(QLatin1String(CONFIG_LANGUAGE));

    QList<CodeMarker *>::ConstIterator m = markers.begin();

    while (m != markers.end()) {

	(*m)->initializeMarker(config);

	++m;

    }

}

/*!

  All the code markers in the static list are terminated here.

 */

void CodeMarker::terminate()

{

    QList<CodeMarker *>::ConstIterator m = markers.begin();

    while (m != markers.end()) {

	(*m)->terminateMarker();

	++m;

    }

}

CodeMarker *CodeMarker::markerForCode(const QString& code)

{

    CodeMarker *defaultMarker = markerForLanguage(defaultLang);

    if (defaultMarker != 0 && defaultMarker->recognizeCode(code))

	return defaultMarker;

    QList<CodeMarker *>::ConstIterator m = markers.begin();

    while (m != markers.end()) {

	if ((*m)->recognizeCode(code))

	    return *m;

	++m;

    }

    return defaultMarker;

}

CodeMarker *CodeMarker::markerForFileName(const QString& fileName)

{

    CodeMarker *defaultMarker = markerForLanguage(defaultLang);

    int dot = -1;

    while ((dot = fileName.lastIndexOf(QLatin1Char('.'), dot)) != -1) {

	QString ext = fileName.mid(dot + 1);

	if (defaultMarker != 0 && defaultMarker->recognizeExtension(ext))

	    return defaultMarker;

	QList<CodeMarker *>::ConstIterator m = markers.begin();

	while (m != markers.end()) {

	    if ((*m)->recognizeExtension(ext))

		return *m;

	    ++m;

	}

        --dot;

    }

    return defaultMarker;

}

CodeMarker *CodeMarker::markerForLanguage(const QString& lang)

{

    QList<CodeMarker *>::ConstIterator m = markers.begin();

    while (m != markers.end()) {

	if ((*m)->recognizeLanguage(lang))

	    return *m;

	++m;

    }

    return 0;

}

const Node *CodeMarker::nodeForString(const QString& string)

{

    if (sizeof(const Node *) == sizeof(uint)) {

        return reinterpret_cast<const Node *>(string.toUInt());

    }

    else {

        return reinterpret_cast<const Node *>(string.toULongLong());

    }

}

QString CodeMarker::stringForNode(const Node *node)

{

    if (sizeof(const Node *) == sizeof(ulong)) {

        return QString::number(reinterpret_cast<ulong>(node));

    }

    else {

        return QString::number(reinterpret_cast<qulonglong>(node));

    }

}

static const QString samp  = QLatin1String("&");

static const QString slt   = QLatin1String("<");

static const QString sgt   = QLatin1String(">");

static const QString squot = QLatin1String(""");

QString CodeMarker::protect(const QString& str)

{

    int n = str.length();

    QString marked;

    marked.reserve(n * 2 + 30);

    const QChar *data = str.constData();

    for (int i = 0; i != n; ++i) {

        switch (data[i].unicode()) {

            case '&': marked += samp;  break;

            case '<': marked += slt;   break;

            case '>': marked += sgt;   break;

            case '"': marked += squot; break;

            default : marked += data[i];

        }

    }

    return marked;

}

QString CodeMarker::typified(const QString &string)

{

    QString result;

    QString pendingWord;

    for (int i = 0; i <= string.size(); ++i) {

        QChar ch;

        if (i != string.size())

            ch = string.at(i);

        QChar lower = ch.toLower();

        if ((lower >= QLatin1Char('a') && lower <= QLatin1Char('z'))

            || ch.digitValue() >= 0 || ch == QLatin1Char('_')

                || ch == QLatin1Char(':')) {

            pendingWord += ch;

        }

        else {

            if (!pendingWord.isEmpty()) {

                bool isProbablyType = (pendingWord != QLatin1String("const"));

                if (isProbablyType)

                    result += QLatin1String("<@type>");

                result += pendingWord;

                if (isProbablyType)

                    result += QLatin1String("</@type>");

            }

            pendingWord.clear();

            switch (ch.unicode()) {

            case '\0':

                break;

            case '&':

                result += QLatin1String("&");

                break;

            case '<':

                result += QLatin1String("<");

                break;

            case '>':

                result += QLatin1String(">");

                break;

            default:

                result += ch;

            }

        }

    }

    return result;

}

QString CodeMarker::taggedNode(const Node* node)

{

    QString tag;

    switch (node->type()) {

    case Node::Namespace:

        tag = QLatin1String("@namespace");

        break;

    case Node::Class:

        tag = QLatin1String("@class");

        break;

    case Node::Enum:

        tag = QLatin1String("@enum");

        break;

    case Node::Typedef:

        tag = QLatin1String("@typedef");

        break;

    case Node::Function:

        tag = QLatin1String("@function");

        break;

    case Node::Property:

        tag = QLatin1String("@property");

        break;

    default:

        tag = QLatin1String("@unknown");

        break;

    }

    return QLatin1Char('<') + tag + QLatin1Char('>') + protect(node->name())

        + QLatin1String("</") + tag + QLatin1Char('>');

}

#ifdef QDOC_QML

QString CodeMarker::taggedQmlNode(const Node* node)

{

    QString tag;

    switch (node->type()) {

    case Node::QmlProperty:

        tag = QLatin1String("@property");

        break;

    case Node::QmlSignal:

        tag = QLatin1String("@signal");

        break;

    case Node::QmlMethod:

        tag = QLatin1String("@method");

        break;

    default:

        tag = QLatin1String("@unknown");

        break;

    }

    return QLatin1Char('<') + tag + QLatin1Char('>') + protect(node->name())

        + QLatin1String("</") + tag + QLatin1Char('>');

}

#endif

QString CodeMarker::linkTag(const Node *node, const QString& body)

{

    return QLatin1String("<@link node=\"") + stringForNode(node)

        + QLatin1String("\">") + body + QLatin1String("</@link>");

}

QString CodeMarker::sortName(const Node *node)

{

    QString nodeName = node->name();

    int numDigits = 0;

    for (int i = nodeName.size() - 1; i > 0; --i) {

        if (nodeName.at(i).digitValue() == -1)

            break;

        ++numDigits;

    }

    // we want 'qint8' to appear before 'qint16'

    if (numDigits > 0) {

        for (int i = 0; i < 4 - numDigits; ++i)

            nodeName.insert(nodeName.size()-numDigits-1, QLatin1String("0"));

    }

    if (node->type() == Node::Function) {

        const FunctionNode *func = static_cast<const FunctionNode *>(node);

        QString sortNo;

        if (func->metaness() == FunctionNode::Ctor) {

            sortNo = QLatin1String("C");

        }

        else if (func->metaness() == FunctionNode::Dtor) {

            sortNo = QLatin1String("D");

        }

        else {

            if (nodeName.startsWith(QLatin1String("operator"))

                    && nodeName.length() > 8

                    && !nodeName[8].isLetterOrNumber())

                sortNo = QLatin1String("F");

            else

                sortNo = QLatin1String("E");

        }

        return sortNo + nodeName + QLatin1Char(' ')

             + QString::number(func->overloadNumber(), 36);

    }

    if (node->type() == Node::Class)

        return QLatin1Char('A') + nodeName;

    if (node->type() == Node::Property || node->type() == Node::Variable)

        return QLatin1Char('E') + nodeName;

    return QLatin1Char('B') + nodeName;

}

void CodeMarker::insert(FastSection &fastSection,

                        Node *node,

                        SynopsisStyle style,

                        Status status)

{

    bool irrelevant = false;

    bool inheritedMember = false;

    if (!node->relates()) {

        if (node->parent() != (const InnerNode*)fastSection.innerNode) {

            if (node->type() != Node::QmlProperty)

                inheritedMember = true;

        }

    }

    if (node->access() == Node::Private) {

	irrelevant = true;

    }

    else if (node->type() == Node::Function) {

	FunctionNode *func = (FunctionNode *) node;

	irrelevant = (inheritedMember

		      && (func->metaness() == FunctionNode::Ctor ||

			  func->metaness() == FunctionNode::Dtor));

    }

    else if (node->type() == Node::Class || node->type() == Node::Enum

		    || node->type() == Node::Typedef) {

	irrelevant = (inheritedMember && style != SeparateList);

        if (!irrelevant && style == Detailed && node->type() == Node::Typedef) {

            const TypedefNode* typedeffe = static_cast<const TypedefNode*>(node);

            if (typedeffe->associatedEnum())

                irrelevant = true;

        }

    }

    if (!irrelevant) {

        if (status == Compat) {

            irrelevant = (node->status() != Node::Compat);

	}

        else if (status == Obsolete) {

            irrelevant = (node->status() != Node::Obsolete);

	}

        else {

            irrelevant = (node->status() == Node::Compat ||

                          node->status() == Node::Obsolete);

	}

    }

    if (!irrelevant) {

	if (!inheritedMember || style == SeparateList) {

	    QString key = sortName(node);

            if (!fastSection.memberMap.contains(key))

		fastSection.memberMap.insert(key, node);

	}

        else {

	    if (node->parent()->type() == Node::Class) {

		if (fastSection.inherited.isEmpty()

                    || fastSection.inherited.last().first != node->parent()) {

		    QPair<ClassNode *, int> p((ClassNode *)node->parent(), 0);

		    fastSection.inherited.append(p);

		}

		fastSection.inherited.last().second++;

	    }

	}

    }

}

/*!

  Returns true if \a node represents a reimplemented member function.

  If it is, then it is inserted in the reimplemented member map in the

  section \a fs. And, the test is only performed if \a status is \e OK.

  Otherwise, false is returned.

 */

bool CodeMarker::insertReimpFunc(FastSection& fs, Node* node, Status status)

{

    if (node->access() == Node::Private)

        return false;

    const FunctionNode* fn = static_cast<const FunctionNode*>(node);

    if ((fn->reimplementedFrom() != 0) && (status == Okay)) {

        bool inherited = (!fn->relates() && (fn->parent() != (const InnerNode*)fs.innerNode));

        if (!inherited) {

            QString key = sortName(fn);

            if (!fs.reimpMemberMap.contains(key)) {

                fs.reimpMemberMap.insert(key,node);

                return true;

            }

        }

    }

    return false;

 }

/*!

  If \a fs is not empty, convert it to a Section and append

  the new Section to \a sectionList.

 */

void CodeMarker::append(QList<Section>& sectionList, const FastSection& fs)

{

    if (!fs.isEmpty()) {

	Section section(fs.name,fs.singularMember,fs.pluralMember);

	section.members = fs.memberMap.values();

        section.reimpMembers = fs.reimpMemberMap.values();

	section.inherited = fs.inherited;

	sectionList.append(section);

    }

}

static QString encode(const QString &string)

{

#if 0

    QString result = string;

    for (int i = string.size() - 1; i >= 0; --i) {

        uint ch = string.at(i).unicode();

        if (ch > 0xFF)

            ch = '?';

        if ((ch - '0') >= 10 && (ch - 'a') >= 26 && (ch - 'A') >= 26

            && ch != '/' && ch != '(' && ch != ')' && ch != ',' && ch != '*'

            && ch != '&' && ch != '_' && ch != '<' && ch != '>' && ch != ':'

            && ch != '~')

            result.replace(i, 1, QString("%") + QString("%1").arg(ch, 2, 16));

    }

    return result;

#else

    return string;

#endif

}

QStringList CodeMarker::macRefsForNode(const Node *node)

{

    QString result = QLatin1String("cpp/");

    switch (node->type()) {

    case Node::Class:

        {

            const ClassNode *classe = static_cast<const ClassNode *>(node);

#if 0

            if (!classe->templateStuff().isEmpty()) {

                 result += QLatin1String("tmplt/");

            }

            else

#endif

            {

                 result += QLatin1String("cl/");

            }

            result += macName(classe); // ### Maybe plainName?

        }

        break;

    case Node::Enum:

        {

            QStringList stringList;

            stringList << encode(result + QLatin1String("tag/") +

                                 macName(node));

            foreach (const QString &enumName, node->doc().enumItemNames()) {

                // ### Write a plainEnumValue() and use it here

                stringList << encode(result + QLatin1String("econst/") +

                                     macName(node->parent(), enumName));

            }

            return stringList;

        }

    case Node::Typedef:

        result += QLatin1String("tdef/") + macName(node);

        break;

    case Node::Function:

        {

            bool isMacro = false;

            const FunctionNode *func = static_cast<const FunctionNode *>(node);

            // overloads are too clever for the Xcode documentation browser