env.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 3,016 行 · 第 1/5 页

   */
  public final Value []setFunctionArgsNoCopy(Value []args)
  {
    Value []oldArgs = _functionArgs;

    for (int i = 0; args != null && i < args.length; i++)
      args[i] = args[i].toValue();

    _functionArgs = args;

    return oldArgs;
  }

  /**
   * Pushes a new environment.
   */
  public final void restoreFunctionArgs(Value []args)
  {
    _functionArgs = args;
  }

  /**
   * Returns the function args.
   */
  public final Value []getFunctionArgs()
  {
    return _functionArgs;
  }

  /**
   * Removes a specialValue
   */
  public Object removeSpecialValue(String name)
  {
    return _specialMap.remove(name);
  }

  /**
   * Returns a constant.
   */
  public Value getConstant(String name)
  {
    Value value = getConstantImpl(name);

    if (value != null)
      return value;

    /* XXX:
       notice(L.l("Converting undefined constant '{0}' to string.",
       name));
    */

    value = createString(name);

    return value;
  }

  /**
   * Returns true if the constant is defined.
   */
  public boolean isDefined(String name)
  {
    return getConstantImpl(name) != null;
  }

  /**
   * Returns a constant.
   */
  private Value getConstantImpl(String name)
  {
    Value value = _constMap.get(name);

    if (value != null)
      return value;

    value = _quercus.getConstant(name);
    if (value != null)
      return value;

    if (_lowerConstMap != null) {
      value = _lowerConstMap.get(name.toLowerCase());

      if (value != null)
	return value;
    }

    return null;
  }
  
  /**
   * Removes a constant.
   */
  public Value removeConstant(String name)
  {
    return _constMap.remove(name);
  }

  /**
   * Sets a constant.
   */
  public Value addConstant(String name,
                           Value value,
                           boolean isCaseInsensitive)
  {
    Value oldValue = _constMap.get(name);

    if (oldValue != null)
      return oldValue;

    _constMap.put(name, value);

    if (_lowerConstMap != null && isCaseInsensitive)
      _lowerConstMap.put(name.toLowerCase(), value);

    return value;
  }

  /**
   * Returns an array of the defined functions.
   */
  public ArrayValue getDefinedConstants()
  {
    ArrayValue result = new ArrayValueImpl();

    for (Map.Entry<String, Value> entry : _quercus.getConstMap().entrySet()) {
      result.put(createString(entry.getKey()), entry.getValue());
    }

    for (Map.Entry<String, Value> entry : _constMap.entrySet()) {
      result.put(createString(entry.getKey()), entry.getValue());
    }

    return result;
  }

  /**
   * Returns true if an extension is loaded.
   */
  public boolean isExtensionLoaded(String name)
  {
    return getQuercus().isExtensionLoaded(name);
  }

  /**
   * Returns true if an extension is loaded.
   */
  public HashSet<String> getLoadedExtensions()
  {
    return getQuercus().getLoadedExtensions();
  }

  /**
   * Returns true if an extension is loaded.
   */
  public Value getExtensionFuncs(String name)
  {
    return getQuercus().getExtensionFuncs(name);
  }

  /**
   * Returns the default stream resource.
   */
  public StreamContextResource getDefaultStreamContext()
  {
    if (_defaultStreamContext == null)
      _defaultStreamContext = new StreamContextResource();

    return _defaultStreamContext;
  }
  
  public ArrayValue getDefinedFunctions()
  {
    ArrayValueImpl funs = new ArrayValueImpl();
    ArrayValueImpl system = new ArrayValueImpl();
    ArrayValueImpl user = new ArrayValueImpl();

    AbstractFunction []systemFuns = _quercus.getFunctionMap();
    AbstractFunction []envFuns = _fun;

    for (int i = 0; i < envFuns.length; i++) {
      if (i < systemFuns.length
	  && systemFuns[i] != null
	  && ! (systemFuns[i] instanceof UndefinedFunction)) {
	system.append(createString(systemFuns[i].getName()));
      }
      else if (envFuns[i] != null
	       && ! (envFuns[i] instanceof UndefinedFunction)) {
	user.append(createString(envFuns[i].getName()));
      }
    }

    funs.append(createString("internal"), system);
    funs.append(createString("user"), user);

    return funs;
  }

  /**
   * Returns the function with a given name.
   *
   * Compiled mode normally uses the _fun array directly, so this call
   * is rare.
   */
  public AbstractFunction findFunction(String name)
  {
    int id = _quercus.findFunctionId(name);

    if (id >= 0) {
      if (id < _fun.length && ! (_fun[id] instanceof UndefinedFunction))
	return _fun[id];
      else
	return null;
    }

    AbstractFunction fun = _quercus.findFunctionImpl(name);

    if (fun != null)
      return fun;

    if (isStrict())
      return null;

    name = name.toLowerCase();
    
    id = _quercus.findFunctionId(name);

    if (id >= 0) {
      if (id < _fun.length && ! (_fun[id] instanceof UndefinedFunction))
	return _fun[id];
      else
        return null;
    }
    
    fun = _quercus.findLowerFunctionImpl(name);
    
    if (fun != null)
      return fun;
    
    if (_anonymousFunMap != null)
      return _anonymousFunMap.get(name);
      
    return null;
  }
  
  public AbstractFunction getFunction(String name)
  {
    AbstractFunction fun = findFunction(name);

    if (fun != null)
      return fun;
    else
      throw createErrorException(L.l("'{0}' is an unknown function.", name));
  }
  
  public void updateFunction(int id, AbstractFunction fun)
  {
    if (_fun.length <= id) {
      AbstractFunction []oldFun = _fun;
      
      _fun = new AbstractFunction[id + 256];
      System.arraycopy(oldFun, 0, _fun, 0, oldFun.length);
    }

    if (_fun[id] == null)
      _fun[id] = fun;
  }
  
  /*
  public int getFunctionId(String name)
  {
    int id = _quercus.getFunctionId(name);

    if (_fun.length <= id) {
      AbstractFunction []oldFun = _fun;
      
      _fun = new AbstractFunction[id + 256];
      System.arraycopy(oldFun, 0, _fun, 0, oldFun.length);
    }

    AbstractFunction []defFuns = _quercus.getFunctionMap();

    if (_fun[id] == null)
      _fun[id] = defFuns[id];

    return id;
  }
  
  public int getFunctionIdCount()
  {
    return _quercus.getFunctionIdCount();
  }
  */

  /**
   * Finds the java reflection method for the function with the given name.
   *
   * @param name the method name
   * @return the found method or null if no method found.
   */
  public AbstractFunction getFunction(Value name)
  {
    name = name.toValue();

    if (name instanceof CallbackFunction)
      return ((CallbackFunction) name).getFunction();

    return getFunction(name.toString());
  }

  /*
  public DefinitionState getDefinitionState()
  {
    return _defState;
  }
  */
  
  public Value addFunction(String name, AbstractFunction fun)
  {
    AbstractFunction staticFun
      = _quercus.findLowerFunctionImpl(name.toLowerCase());

    if (staticFun != null)
      throw new QuercusException(L.l("can't redefine function {0}", name));
    
    int id = _quercus.getFunctionId(name);

    // XXX: anonymous/generated functions(?), e.g. like foo2431

    if (_fun.length <= id) {
      AbstractFunction []funMap = new AbstractFunction[id + 256];
      System.arraycopy(_fun, 0, funMap, 0, _fun.length);
      _fun = funMap;
    }

    if (_fun[id] != null && ! (_fun[id] instanceof UndefinedFunction))
      throw new QuercusException(L.l("can't redefine function {0}", name));

    _fun[id] = fun;

    return BooleanValue.TRUE;
  }
  
  public AbstractFunction createAnonymousFunction(String args, String code)
    throws IOException
  {
    log.log(Level.FINE, code);

    if (_anonymousFunMap == null)
      _anonymousFunMap = new HashMap<String, AbstractFunction>();

    // PHP naming style for anonymous functions
    String name = "\u0000lamba" + (_anonymousFunMap.size() + 1);
    
    AbstractFunction fun = getQuercus().parseFunction(name, args, code);

    _anonymousFunMap.put(name, fun);
    return fun;
  }

  /**
   * Adds a function from a compiled include
   *
   * @param name the function name, must be an intern() string
   * @param lowerName the function name, must be an intern() string
   */
  public Value addFunctionFromPage(String name, String lowerName,
				   AbstractFunction fun)
  {
    // XXX: skip the old function check since the include for compiled
    // pages is already verified.  Might have a switch here?
    /*
    AbstractFunction oldFun = _lowerFunMap.get(lowerName);

    if (oldFun == null)
      oldFun = _quercus.findLowerFunctionImpl(lowerName);

    if (oldFun != null) {
      throw new QuercusException(L.l("can't redefine function {0}", name));
    }

    _funMap.put(name, fun);

    if (! isStrict())
      _lowerFunMap.put(lowerName, fun);
    */

    return BooleanValue.TRUE;
  }

  /**
   * Finds the java reflection method for the function with the given name.
   *
   * @param className the class name
   * @param methodName the method name
   * @return the found method or null if no method found.
   */
  public AbstractFunction findMethod(String className, String methodName)
  {
    QuercusClass cl = findClass(className);

    if (cl == null) {
      error(L.l("'{0}' is an unknown class.", className));
      return null;
    }

    AbstractFunction fun = cl.findFunction(methodName);

    if (fun == null) {
      error(L.l("'{0}::{1}' is an unknown method.",
                className, methodName));
      return null;
    }

    return fun;
  }

  /**
   * Compiles and calluates the given code
   *
   * @param code the code to calluate
   * @return the result
   */
  public Value evalCode(String code)
    throws IOException
  {
    if (log.isLoggable(Level.FINER))
      log.finer(code);

    Quercus quercus = getQuercus();

    QuercusProgram program = quercus.parseEvalExpr(code);

    Value value = program.execute(this);

    return value;
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @return the function value
   */
  public Value call(String name)
  {
    AbstractFunction fun = findFunction(name);

    if (fun == null)
      return error(L.l("'{0}' is an unknown function.", name));

    return fun.call(this);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @return the function value
   */
  public Value call(String name, Value a0)
  {
    AbstractFunction fun = findFunction(name);

    if (fun == null)
      return error(L.l("'{0}' is an unknown function.", name));

    return fun.call(this, a0);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @return the function value
   */
  public Value call(String name, Value a0, Value a1)
  {
    return getFunction(name).call(this, a0, a1);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @param a2 the third argument
   * @return the function value
   */
  public Value call(String name, Value a0, Value a1, Value a2)
  {
    return getFunction(name).call(this, a0, a1, a2);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @param a2 the third argument
   * @param a3 the fourth argument
   * @return the function value
   */
  public Value call(String name, Value a0, Value a1, Value a2, Value a3)
  {
    return getFunction(name).call(this, a0, a1, a2, a3);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @param a2 the third argument
   * @param a3 the fourth argument
   * @param a4 the fifth argument
   * @return the function value
   */
  public Value call(String name, Value a0, Value a1,
                    Value a2, Value a3, Value a4)
  {
    return getFunction(name).call(this, a0, a1, a2, a3, a4);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @param args the arguments
   * @return the function value
   */
  public Value call(String name, Value []args)
  {
    return getFunction(name).call(this, args);
  }

  /**
   * Evaluates the named function.
   *
   * @param name the function name
   * @return the function value
   */
  public Value callRef(String name)
  {
    AbstractFunction fun = findFunction(name);

    if (fun == null)
      return error(L.l("'{0}' is an unknown function.", name));

    return fun.callRef(this);
  }

  /**
   * EvalRefuates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @return the function value
   */
  public Value callRef(String name, Value a0)
  {
    AbstractFunction fun = findFunction(name);

    if (fun == null)
      return error(L.l("'{0}' is an unknown function.", name));

    return fun.callRef(this, a0);
  }

  /**
   * EvalRefuates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @return the function value
   */
  public Value callRef(String name, Value a0, Value a1)
  {
    AbstractFunction fun = findFunction(name);

    if (fun == null)
      return error(L.l("'{0}' is an unknown function.", name));

    return fun.callRef(this, a0, a1);
  }

  /**
   * EvalRefuates the named function.
   *
   * @param name the function name
   * @param a0 the first argument
   * @param a1 the second argument
   * @param a2 the third argument
   * @r