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#ifndef QMLJSLINK_H
#define QMLJSLINK_H

#include <qmljs/qmljsdocument.h>
#include <qmljs/qmljsinterpreter.h>
#include <qmljs/parser/qmljsastfwd_p.h>
#include <languageutils/componentversion.h>

#include <QtCore/QCoreApplication>

namespace QmlJS {

class NameId;
class LinkPrivate;

/*
    Helper for building a context.
*/
class QMLJS_EXPORT Link
{
    Q_DECLARE_PRIVATE(Link)
    Q_DECLARE_TR_FUNCTIONS(QmlJS::Link)

public:
    Link(Interpreter::Context *context, const Snapshot &snapshot,
         const QStringList &importPaths);

    // Link all documents in snapshot, collecting all diagnostic messages (if messages != 0)
    void operator()(QHash<QString, QList<DiagnosticMessage> > *messages = 0);

    // Link all documents in snapshot, appending the diagnostic messages
    // for 'doc' in 'messages'
    void operator()(const Document::Ptr &doc, QList<DiagnosticMessage> *messages);

    ~Link();

private:
    Interpreter::Engine *engine();

    static AST::UiQualifiedId *qualifiedTypeNameId(AST::Node *node);

    void linkImports();

    void populateImportedTypes(Interpreter::TypeEnvironment *typeEnv, Document::Ptr doc);
    Interpreter::ObjectValue *importFileOrDirectory(Document::Ptr doc, const Interpreter::ImportInfo &importInfo);
    Interpreter::ObjectValue *importNonFile(Document::Ptr doc, const Interpreter::ImportInfo &importInfo, const QString &forcedPackageName = QString::null);
    void importObject(Bind *bind, const QString &name, Interpreter::ObjectValue *object, NameId *targetNamespace);

    bool importLibrary(Document::Ptr doc,
                       Interpreter::ObjectValue *import,
                       const QString &libraryPath,
                       const Interpreter::ImportInfo &importInfo,
                       const QString &importPath = QString());
    void loadQmldirComponents(Interpreter::ObjectValue *import,
                              LanguageUtils::ComponentVersion version,
                              const LibraryInfo &libraryInfo,
                              const QString &libraryPath);
    void loadImplicitDirectoryImports(Interpreter::TypeEnvironment *typeEnv, Document::Ptr doc);
    void loadImplicitDefaultImports(Interpreter::TypeEnvironment *typeEnv);

    void error(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message);
    void warning(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message);
    void appendDiagnostic(const Document::Ptr &doc, const DiagnosticMessage &message);

private:
    QScopedPointer<LinkPrivate> d_ptr;
};

} // namespace QmlJS

#endif // QMLJSLINK_H