/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Script Generator project on Qt Labs.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/


#include "control.h"
#include "lexer.h"

Control::Control()
  : current_context(0),
    _M_skipFunctionBody(false),
    _M_lexer(0),
    _M_parser(0)
{
  pushContext();

  declareTypedef(findOrInsertName("__builtin_va_list",
		 strlen("__builtin_va_list")), 0);
}

Control::~Control()
{
  popContext();

  Q_ASSERT(current_context == 0);
}

Lexer *Control::changeLexer(Lexer *lexer)
{
  Lexer *old = _M_lexer;
  _M_lexer = lexer;
  return old;
}

Parser *Control::changeParser(Parser *parser)
{
  Parser *old = _M_parser;
  _M_parser = parser;
  return old;
}

Type *Control::lookupType(const NameSymbol *name) const
{
  Q_ASSERT(current_context != 0);

  return current_context->resolve(name);
}

void Control::declare(const NameSymbol *name, Type *type)
{
  //printf("*** Declare:");
  //printSymbol(name);
  //putchar('\n');
  Q_ASSERT(current_context != 0);

  current_context->bind(name, type);
}

void Control::pushContext()
{
  // printf("+Context\n");
  Context *new_context = new Context;
  new_context->parent = current_context;
  current_context = new_context;
}

void Control::popContext()
{
  // printf("-Context\n");
  Q_ASSERT(current_context != 0);

  Context *old_context = current_context;
  current_context = current_context->parent;

  delete old_context;
}

void Control::declareTypedef(const NameSymbol *name, Declarator *d)
{
  //  printf("declared typedef:");
  //  printSymbol(name);
  //  printf("\n");
  stl_typedef_table.insert(name, d);
}

bool Control::isTypedef(const NameSymbol *name) const
{
  //  printf("is typedef:");
  //  printSymbol(name);
  // printf("= %d\n", (stl_typedef_table.find(name) != stl_typedef_table.end()));

  return stl_typedef_table.contains(name);
}

QList<Control::ErrorMessage> Control::errorMessages () const
{
  return _M_error_messages;
}

void Control::clearErrorMessages ()
{
  _M_error_messages.clear ();
}

void Control::reportError (const ErrorMessage &errmsg)
{
    _M_error_messages.append(errmsg);
}

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