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#include "codemodel_finder.h"
#include "codemodel.h"
#include "binder.h"

CodeModelFinder::CodeModelFinder(CodeModel* model, Binder* binder)
  : _M_model(model)
  , _M_binder(binder)
  , _M_token_stream(binder->tokenStream())
  , name_cc(_M_binder)
  , _M_resolve_policy(ResolveItem)
{
}

CodeModelFinder::~CodeModelFinder() {}

ScopeModelItem CodeModelFinder::resolveScope(NameAST* name, ScopeModelItem scope)
{
  Q_ASSERT(scope.data() != 0);

  ResolvePolicy saved_resolve_policy = _M_resolve_policy;
  _M_resolve_policy = ResolveScope;

  ScopeModelItem old = changeCurrentScope(scope);

  visit(name);
  ScopeModelItem result = _M_current_scope;

  changeCurrentScope(old); // restore

  _M_resolve_policy = saved_resolve_policy;

  return result;
}

ScopeModelItem CodeModelFinder::changeCurrentScope(ScopeModelItem scope)
{
  ScopeModelItem old = _M_current_scope;
  _M_current_scope = scope;
  return old;
}

void CodeModelFinder::visitName(NameAST* node)
{
  visitNodes(this, node->qualified_names);

  if (_M_resolve_policy == ResolveItem)
    visit(node->unqualified_name);
}

void CodeModelFinder::visitUnqualifiedName(UnqualifiedNameAST* node)
{
  if (!_M_current_scope) {
    // nothing to do
    return;
  }

  name_cc.run(node);
  QString id = name_cc.name();

  if (ClassModelItem klass = _M_current_scope->findClass(id)) {
    _M_current_scope = klass;
  } else if (NamespaceModelItem parentNamespace = _M_current_scope.dynamicCast<_NamespaceModelItem>()) {
    NamespaceModelItem ns = parentNamespace->findNamespace(id);
    _M_current_scope = ns.staticCast<_ScopeModelItem>();
  } else if (FileModelItem file = _M_current_scope.dynamicCast<_FileModelItem>()) {
    NamespaceModelItem ns = file->findNamespace(id);
    _M_current_scope = ns.staticCast<_ScopeModelItem>();
  }
}

// kate: space-indent on; indent-width 2; replace-tabs on;
