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/*
  codeparser.cpp
*/

#include "codeparser.h"
#include "node.h"
#include "tree.h"
#include "config.h"

QT_BEGIN_NAMESPACE

#define COMMAND_COMPAT                  Doc::alias(QLatin1String("compat"))
#define COMMAND_DEPRECATED              Doc::alias(QLatin1String("deprecated")) // ### don't document
#define COMMAND_INGROUP                 Doc::alias(QLatin1String("ingroup"))
#define COMMAND_INMODULE                Doc::alias(QLatin1String("inmodule"))  // ### don't document
#define COMMAND_INTERNAL                Doc::alias(QLatin1String("internal"))
#define COMMAND_MAINCLASS               Doc::alias(QLatin1String("mainclass"))
#define COMMAND_NONREENTRANT            Doc::alias(QLatin1String("nonreentrant"))
#define COMMAND_OBSOLETE                Doc::alias(QLatin1String("obsolete"))
#define COMMAND_PAGEKEYWORDS            Doc::alias(QLatin1String("pagekeywords"))
#define COMMAND_PRELIMINARY             Doc::alias(QLatin1String("preliminary"))
#define COMMAND_INPUBLICGROUP           Doc::alias(QLatin1String("inpublicgroup"))
#define COMMAND_REENTRANT               Doc::alias(QLatin1String("reentrant"))
#define COMMAND_SINCE                   Doc::alias(QLatin1String("since"))
#define COMMAND_SUBTITLE                Doc::alias(QLatin1String("subtitle"))
#define COMMAND_THREADSAFE              Doc::alias(QLatin1String("threadsafe"))
#define COMMAND_TITLE                   Doc::alias(QLatin1String("title"))

QList<CodeParser *> CodeParser::parsers;
bool CodeParser::showInternal = false;
QMap<QString,QString> CodeParser::nameToTitle;

/*!
  The constructor adds this code parser to the static
  list of code parsers.
 */
CodeParser::CodeParser()
{
    parsers.prepend(this);
}

/*!
  The destructor removes this code parser from the static
  list of code parsers.
 */
CodeParser::~CodeParser()
{
    parsers.removeAll(this);
}

/*!
  Initialize the code parser base class.
 */
void CodeParser::initializeParser(const Config& config)
{
    showInternal = config.getBool(QLatin1String(CONFIG_SHOWINTERNAL));
}

/*!
  Terminating a code parser is trivial.
 */
void CodeParser::terminateParser()
{
    // nothing.
}

QStringList CodeParser::headerFileNameFilter()
{
    return sourceFileNameFilter();
}

void CodeParser::parseHeaderFile(const Location& location,
                                 const QString& filePath,
                                 Tree *tree)
{
    parseSourceFile(location, filePath, tree);
}

void CodeParser::doneParsingHeaderFiles(Tree *tree)
{
    doneParsingSourceFiles(tree);
}

/*!
  All the code parsers in the static list are initialized here,
  after the qdoc configuration variables have been set.
 */
void CodeParser::initialize(const Config& config)
{
    QList<CodeParser *>::ConstIterator p = parsers.begin();
    while (p != parsers.end()) {
	(*p)->initializeParser(config);
	++p;
    }
}

/*!
  All the code parsers in the static list are terminated here.
 */
void CodeParser::terminate()
{
    QList<CodeParser *>::ConstIterator p = parsers.begin();
    while (p != parsers.end()) {
	(*p)->terminateParser();
	++p;
    }
}

CodeParser *CodeParser::parserForLanguage(const QString& language)
{
    QList<CodeParser *>::ConstIterator p = parsers.begin();
    while (p != parsers.end()) {
	if ((*p)->language() == language)
	    return *p;
	++p;
    }
    return 0;
}

CodeParser *CodeParser::parserForHeaderFile(const QString &filePath)
{
    QString fileName = QFileInfo(filePath).fileName();

    QList<CodeParser *>::ConstIterator p = parsers.begin();
    while (p != parsers.end()) {

	QStringList headerPatterns = (*p)->headerFileNameFilter();
	foreach (QString pattern, headerPatterns) {
            QRegExp re(pattern, Qt::CaseInsensitive, QRegExp::Wildcard);
            if (re.exactMatch(fileName))
                return *p;
        }
	++p;
    }
    return 0;
}

CodeParser *CodeParser::parserForSourceFile(const QString &filePath)
{
    QString fileName = QFileInfo(filePath).fileName();

    QList<CodeParser *>::ConstIterator p = parsers.begin();
    while (p != parsers.end()) {

	QStringList sourcePatterns = (*p)->sourceFileNameFilter();
	foreach (QString pattern, sourcePatterns) {
            QRegExp re(pattern, Qt::CaseInsensitive, QRegExp::Wildcard);
            if (re.exactMatch(fileName))
                return *p;
        }
	++p;
    }
    return 0;
}

/*!
  Returns the set of strings representing the common metacommands.
 */
QSet<QString> CodeParser::commonMetaCommands()
{
    return QSet<QString>() << COMMAND_COMPAT
                           << COMMAND_DEPRECATED
                           << COMMAND_INGROUP
                           << COMMAND_INMODULE
                           << COMMAND_INTERNAL
                           << COMMAND_MAINCLASS
                           << COMMAND_NONREENTRANT
                           << COMMAND_OBSOLETE
                           << COMMAND_PAGEKEYWORDS
                           << COMMAND_PRELIMINARY
                           << COMMAND_INPUBLICGROUP
                           << COMMAND_REENTRANT
                           << COMMAND_SINCE
                           << COMMAND_SUBTITLE
                           << COMMAND_THREADSAFE
                           << COMMAND_TITLE;
}

/*!
  The topic command has been processed. Now process the other
  metacommands that were found. These are not the text markup
  commands. 
 */
void CodeParser::processCommonMetaCommand(const Location &location,
                                          const QString &command,
					  const QString &arg,
                                          Node *node,
                                          Tree *tree)
{
    if (command == COMMAND_COMPAT) {
        node->setStatus(Node::Compat);
    }
    else if (command == COMMAND_DEPRECATED) {
	node->setStatus(Node::Deprecated);
    }
    else if (command == COMMAND_INGROUP) {
	tree->addToGroup(node, arg);
    }
    else if (command == COMMAND_INPUBLICGROUP) {
        tree->addToPublicGroup(node, arg);
    }
    else if (command == COMMAND_INMODULE) {
	node->setModuleName(arg);
    }
    else if (command == COMMAND_MAINCLASS) {
	node->setStatus(Node::Main);
    }
    else if (command == COMMAND_OBSOLETE) {
        if (node->status() != Node::Compat)
            node->setStatus(Node::Obsolete);
    }
    else if (command == COMMAND_NONREENTRANT) {
	node->setThreadSafeness(Node::NonReentrant);
    }
    else if (command == COMMAND_PRELIMINARY) {
	node->setStatus(Node::Preliminary);
    }
    else if (command == COMMAND_INTERNAL) {
        if (!showInternal) {
            node->setAccess(Node::Private);
            node->setStatus(Node::Internal);
        }
    }
    else if (command == COMMAND_REENTRANT) {
	node->setThreadSafeness(Node::Reentrant);
    }
    else if (command == COMMAND_SINCE) {
        node->setSince(arg);
    }
    else if (command == COMMAND_PAGEKEYWORDS) {
        node->addPageKeywords(arg);
    }
    else if (command == COMMAND_SUBTITLE) {
	if (node->type() == Node::Fake) {
	    FakeNode *fake = static_cast<FakeNode *>(node);
            fake->setSubTitle(arg);
        }
        else
            location.warning(tr("Ignored '\\%1'").arg(COMMAND_SUBTITLE));
    }
    else if (command == COMMAND_THREADSAFE) {
	node->setThreadSafeness(Node::ThreadSafe);
    }
    else if (command == COMMAND_TITLE) {
	if (node->type() == Node::Fake) {
	    FakeNode *fake = static_cast<FakeNode *>(node);
            fake->setTitle(arg);
            nameToTitle.insert(fake->name(),arg);
        }
        else
	    location.warning(tr("Ignored '\\%1'").arg(COMMAND_TITLE));
    }
}

/*!
  Find the page title given the page \a name and return it.
 */
const QString CodeParser::titleFromName(const QString& name)
{
    const QString t = nameToTitle.value(name);
    return t;
}

QT_END_NAMESPACE