/*
   +----------------------------------------------------------------------+
   | HipHop for PHP                                                       |
   +----------------------------------------------------------------------+
   | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
*/

#include "hphp/compiler/analysis/ast_walker.h"
#include "hphp/compiler/statement/statement.h"

using namespace HPHP;

///////////////////////////////////////////////////////////////////////////////

bool FunctionWalker::SkipRecurse(ConstructPtr cp) {
  StatementPtr s(
    boost::dynamic_pointer_cast<Statement>(cp));
  return SkipRecurse(s);
}
bool FunctionWalker::SkipRecurse(ConstructConstPtr cp) {
  StatementConstPtr s(
    boost::dynamic_pointer_cast<const Statement>(cp));
  return SkipRecurse(s);
}
bool FunctionWalker::SkipRecurse(ConstructRawPtr cp) {
  StatementRawPtr s(
    boost::dynamic_pointer_cast<Statement>(cp));
  return SkipRecurse(s);
}

bool FunctionWalker::SkipRecurse(const Statement* stmt) {
  if (!stmt) return false;
  Statement::KindOf stype = stmt->getKindOf();
  switch (stype) {
    case Statement::KindOfFunctionStatement:
    case Statement::KindOfMethodStatement:
    case Statement::KindOfClassStatement:
    case Statement::KindOfInterfaceStatement:
      return true;
    default:
      break;
  }
  return false;
}

int FunctionWalker::before(ConstructRawPtr cp) {
  return SkipRecurse(cp) ? WalkSkip : WalkContinue;
}