interpreter.cpp

/*
 *  This file is part of the KDE libraries
 *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
 *  Copyright (C) 2003 Apple Computer, Inc.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 */
 
#include "value.h"
#include "object.h"
#include "types.h"
#include "interpreter.h"
 
#include <assert.h>
#include <math.h>
#include <stdio.h>
 
#include "internal.h"
#include "collector.h"
#include "operations.h"
#include "error_object.h"
#include "debugger.h"
#include "nodes.h"
#include "context.h"
 
using namespace KJS;
 
// ------------------------------ Context --------------------------------------
 
const ScopeChain &Context::scopeChain() const
{
  return rep->scopeChain();
}
 
Object Context::variableObject() const
{
  return rep->variableObject();
}
 
Object Context::thisValue() const
{
  return rep->thisValue();
}
 
const Context Context::callingContext() const
{
  return rep->callingContext();
}
 
CodeType Context::codeType() const
{
  return rep->codeType();
}
 
int Context::sourceId() const
{
  return rep->sourceId;
}
 
int Context::curStmtFirstLine() const
{
  return rep->line0;
}
 
int Context::curStmtLastLine() const
{
  return rep->line1;
}
 
Object Context::function() const
{
  return Object(rep->function());
}
 
Identifier Context::functionName() const
{
  return rep->functionName;
}
 
List Context::args() const
{
  return rep->args;
}
 
bool KJS::operator==(const Context &c1, const Context &c2)
{
  return (c1.imp() == c2.imp());
}
 
bool KJS::operator!=(const Context &c1, const Context &c2)
{
  return (c1.imp() != c2.imp());
}
 
// ------------------------------ Interpreter ---------------------------------
 
Interpreter::Interpreter(const Object &global)
{
  rep = new InterpreterImp(this,global);
}
 
Interpreter::Interpreter()
{
  Object global(new ObjectImp());
  rep = new InterpreterImp(this,global);
}
 
Interpreter::~Interpreter()
{
  delete rep;
}
 
Object &Interpreter::globalObject() const
{
  return rep->globalObject();
}
 
void Interpreter::initGlobalObject()
{
  rep->initGlobalObject();
}
 
void Interpreter::lock()
{
  InterpreterImp::lock();
}
 
void Interpreter::unlock()
{
  InterpreterImp::unlock();
}
 
ExecState *Interpreter::globalExec()
{
  return rep->globalExec();
}
 
bool Interpreter::checkSyntax(const UString &code, int *errLine, UString *errMsg)
{
  return rep->checkSyntax(code,errLine,errMsg);
}
 
bool Interpreter::checkSyntax(const UString &code)
{
  return rep->checkSyntax(code);
}
 
Completion Interpreter::evaluate(const UString &code, const Value &thisV)
{
  return rep->evaluate(code,thisV);
}
 
InterpreterImp *Interpreter::imp()
{
  return rep;
}
 
Object Interpreter::builtinObject() const
{
  return rep->builtinObject();
}
 
Object Interpreter::builtinFunction() const
{
  return rep->builtinFunction();
}
 
Object Interpreter::builtinArray() const
{
  return rep->builtinArray();
}
 
Object Interpreter::builtinBoolean() const
{
  return rep->builtinBoolean();
}
 
Object Interpreter::builtinString() const
{
  return rep->builtinString();
}
 
Object Interpreter::builtinNumber() const
{
  return rep->builtinNumber();
}
 
Object Interpreter::builtinDate() const
{
  return rep->builtinDate();
}
 
Object Interpreter::builtinRegExp() const
{
  return rep->builtinRegExp();
}
 
Object Interpreter::builtinError() const
{
  return rep->builtinError();
}
 
Object Interpreter::builtinObjectPrototype() const
{
  return rep->builtinObjectPrototype();
}
 
Object Interpreter::builtinFunctionPrototype() const
{
  return rep->builtinFunctionPrototype();
}
 
Object Interpreter::builtinArrayPrototype() const
{
  return rep->builtinArrayPrototype();
}
 
Object Interpreter::builtinBooleanPrototype() const
{
  return rep->builtinBooleanPrototype();
}
 
Object Interpreter::builtinStringPrototype() const
{
  return rep->builtinStringPrototype();
}
 
Object Interpreter::builtinNumberPrototype() const
{
  return rep->builtinNumberPrototype();
}
 
Object Interpreter::builtinDatePrototype() const
{
  return rep->builtinDatePrototype();
}
 
Object Interpreter::builtinRegExpPrototype() const
{
  return rep->builtinRegExpPrototype();
}
 
Object Interpreter::builtinErrorPrototype() const
{
  return rep->builtinErrorPrototype();
}
 
Object Interpreter::builtinEvalError() const
{
  return rep->builtinEvalError();
}
 
Object Interpreter::builtinRangeError() const
{
  return rep->builtinRangeError();
}
 
Object Interpreter::builtinReferenceError() const
{
  return rep->builtinReferenceError();
}
 
Object Interpreter::builtinSyntaxError() const
{
  return rep->builtinSyntaxError();
}
 
Object Interpreter::builtinTypeError() const
{
  return rep->builtinTypeError();
}
 
Object Interpreter::builtinURIError() const
{
  return rep->builtinURIError();
}
 
Object Interpreter::builtinEvalErrorPrototype() const
{
  return rep->builtinEvalErrorPrototype();
}
 
Object Interpreter::builtinRangeErrorPrototype() const
{
  return rep->builtinRangeErrorPrototype();
}
 
Object Interpreter::builtinReferenceErrorPrototype() const
{
  return rep->builtinReferenceErrorPrototype();
}
 
Object Interpreter::builtinSyntaxErrorPrototype() const
{
  return rep->builtinSyntaxErrorPrototype();
}
 
Object Interpreter::builtinTypeErrorPrototype() const
{
  return rep->builtinTypeErrorPrototype();
}
 
Object Interpreter::builtinURIErrorPrototype() const
{
  return rep->builtinURIErrorPrototype();
}
 
void Interpreter::setCompatMode(CompatMode mode)
{
  rep->setCompatMode(mode);
}
 
Interpreter::CompatMode Interpreter::compatMode() const
{
  return rep->compatMode();
}
 
bool Interpreter::collect()
{
  return Collector::collect();
}
 
#ifdef KJS_DEBUG_MEM
#include "lexer.h"
void Interpreter::finalCheck()
{
  fprintf(stderr,"Interpreter::finalCheck()\n");
  // Garbage collect - as many times as necessary
  // (we could delete an object which was holding another object, so
  // the deref() will happen too late for deleting the impl of the 2nd object).
  while( Collector::collect() )
    ;
 
  Node::finalCheck();
  Collector::finalCheck();
  Lexer::globalClear();
  UString::globalClear();
}
#endif
 
// ------------------------------ ExecState --------------------------------------
 
void ExecState::setException(const Value &e)
{
  if (e.isValid()) {
    Debugger *dbg = _interpreter->imp()->debugger();
    if (dbg)
      dbg->exception(this,e,_context->inTryCatch());
  }
  _exception = e;
}
 
void ExecState::clearException()
{
  terminate_request = false;
  _exception = Value();
}
 
bool ExecState::terminate_request = false;
 
static bool defaultConfirm() { return true; }
 
bool (*ExecState::confirmTerminate)() = defaultConfirm;
 
bool ExecState::hadException()
{
  if (terminate_request) {
    terminate_request = false;
    if (confirmTerminate())
      _exception = Error::create((ExecState*)this);
  }
  return _exception.isValid();
}
 
void Interpreter::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
 
 
Interpreter *ExecState::lexicalInterpreter() const
{
  // TODO: use proper implementation
#if 1
  return dynamicInterpreter();
#else
  if (!_context) {
    return dynamicInterpreter();
  }
 
  InterpreterImp *result = InterpreterImp::interpreterWithGlobalObject(_context->scopeChain().bottom());
 
  if (!result) {
    return dynamicInterpreter();
  }
 
  return result->interpreter();
#endif
}