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#include "qmljslookupcontext.h"
#include "qmljsinterpreter.h"
#include "qmljslink.h"
#include "qmljsscopebuilder.h"
#include "qmljsmodelmanagerinterface.h"
#include "qmljsevaluate.h"

using namespace QmlJS;

class QmlJS::LookupContextData
{
public:
    LookupContextData(Document::Ptr doc, const Snapshot &snapshot, const QList<AST::Node *> &path)
        : context(snapshot),
          doc(doc)
    {
        // since we keep the document and snapshot around, we don't need to keep the Link instance
        Link link(&context, snapshot, ModelManagerInterface::instance()->importPaths());
        link();

        ScopeBuilder scopeBuilder(&context, doc);
        scopeBuilder.initializeRootScope();
        scopeBuilder.push(path);
    }

    LookupContextData(Document::Ptr doc,
                      const Interpreter::Context &linkedContextWithoutScope,
                      const QList<AST::Node *> &path)
        : context(linkedContextWithoutScope),
          doc(doc)
    {
        ScopeBuilder scopeBuilder(&context, doc);
        scopeBuilder.initializeRootScope();
        scopeBuilder.push(path);
    }

    Interpreter::Context context;
    Document::Ptr doc;
    // snapshot is in context
};

LookupContext::LookupContext(Document::Ptr doc, const Snapshot &snapshot, const QList<AST::Node *> &path)
    : d(new LookupContextData(doc, snapshot, path))
{
}

LookupContext::LookupContext(const Document::Ptr doc,
                             const Interpreter::Context &linkedContextWithoutScope,
                             const QList<AST::Node *> &path)
    : d(new LookupContextData(doc, linkedContextWithoutScope, path))
{
}

LookupContext::~LookupContext()
{
}

LookupContext::Ptr LookupContext::create(Document::Ptr doc, const Snapshot &snapshot, const QList<AST::Node *> &path)
{
    Ptr ptr(new LookupContext(doc, snapshot, path));
    return ptr;
}

LookupContext::Ptr LookupContext::create(const Document::Ptr doc,
                                         const Interpreter::Context &linkedContextWithoutScope,
                                         const QList<AST::Node *> &path)
{
    Ptr ptr(new LookupContext(doc, linkedContextWithoutScope, path));
    return ptr;
}

const Interpreter::Value *LookupContext::evaluate(AST::Node *node) const
{
    Evaluate check(&d->context);
    return check(node);
}

Document::Ptr LookupContext::document() const
{
    return d->doc;
}

Snapshot LookupContext::snapshot() const
{
    return d->context.snapshot();
}

// the engine is only guaranteed to live as long as the LookupContext
Interpreter::Engine *LookupContext::engine() const
{
    return d->context.engine();
}

// the context is only guaranteed to live as long as the LookupContext
const Interpreter::Context *LookupContext::context() const
{
    return &d->context;
}