/**
* Evaluates the function.
*/
public override Value callMethod(Env env, QuercusClass qClass, Value qThis,
Value [] args)
{
if (args.length < _methodTable.length)
{
AbstractJavaMethod [] methods = _methodTable[args.length];
if (methods != null)
{
if (methods.length == 1)
{
return(methods[0].callMethod(env, qClass, qThis, args));
}
else
{
AbstractJavaMethod method
= getBestFitJavaMethod(methods, _restMethodTable, args);
return(method.callMethod(env, qClass, qThis, args));
}
}
else
{
if (_restMethodTable.length == 0)
{
env.warning(L.l(
"'{0}' overloaded method call with {1} arguments "
+ "does not match any overloaded method",
getName(),
args.length));
return(NullValue.NULL);
}
AbstractJavaMethod method
= getBestFitJavaMethod(methods, _restMethodTable, args);
return(method.callMethod(env, qClass, qThis, args));
}
}
else
{
if (_restMethodTable.length == 0)
{
env.warning(L.l(
"'{0}' overloaded method call with {1} "
+ "arguments has too many arguments", getName(), args.length));
return(NullValue.NULL);
}
else
{
AbstractJavaMethod method
= getBestFitJavaMethod(null, _restMethodTable, args);
return(method.callMethod(env, qClass, qThis, args));
}
}
}
getBestFitJavaMethod(AbstractJavaMethod [] methods,
AbstractJavaMethod [][] restMethodTable,
Expr [] args)
{
AbstractJavaMethod minCostJavaMethod = null;
int minCost = Integer.MAX_VALUE;
if (methods != null)
{
for (int i = 0; i < methods.length; i++)
{
AbstractJavaMethod javaMethod = methods[i];
int cost = javaMethod.getMarshalingCost(args);
if (cost == 0)
{
return(javaMethod);
}
if (cost <= minCost)
{
minCost = cost;
minCostJavaMethod = javaMethod;
}
}
}
for (int i = Math.min(args.length, restMethodTable.length) - 1;
i >= 0;
i--)
{
if (restMethodTable[i] == null)
{
continue;
}
for (int j = 0; j < restMethodTable[i].length; j++)
{
AbstractJavaMethod javaMethod = restMethodTable[i][j];
int cost = javaMethod.getMarshalingCost(args);
if (cost == 0)
{
return(javaMethod);
}
if (cost <= minCost)
{
minCost = cost;
minCostJavaMethod = javaMethod;
}
}
}
return(minCostJavaMethod);
}
public void addFunction(String name, AbstractJavaMethod fun)
{
AbstractJavaMethod oldFun = _funMap.get(name);
if (oldFun == null)
{
_funMap.put(name, fun);
}
else
{
_funMap.put(name, oldFun.overload(fun));
}
}
/**
* Returns the cost of marshaling for this method given the args.
*/
public int getMarshalingCost(Value [] args)
{
AbstractJavaMethod [] methods = null;
if (args.length < _methodTable.length)
{
methods = _methodTable[args.length];
}
AbstractJavaMethod bestFitMethod
= getBestFitJavaMethod(methods, _restMethodTable, args);
return(bestFitMethod.getMarshalingCost(args));
}
/**
* Returns an overloaded java method.
*/
public AbstractJavaMethod overload(AbstractJavaMethod fun)
{
if (fun.getHasRestArgs())
{
int len = fun.getMinArgLength();
if (_restMethodTable.length <= len)
{
AbstractJavaMethod [][] restMethodTable
= new AbstractJavaMethod[len + 1][];
System.arraycopy(_restMethodTable, 0,
restMethodTable, 0, _restMethodTable.length);
_restMethodTable = restMethodTable;
}
AbstractJavaMethod [] methods = _restMethodTable[len];
if (methods == null)
{
_restMethodTable[len] = new AbstractJavaMethod[] { fun }
}
;
else
{
AbstractJavaMethod [] newMethods
= new AbstractJavaMethod[methods.length + 1];
System.arraycopy(methods, 0, newMethods, 0, methods.length);
newMethods[methods.length] = fun;
_restMethodTable[len] = newMethods;
}
}
else
{
int maxLen = fun.getMaxArgLength();
if (_methodTable.length <= maxLen)
{
AbstractJavaMethod [][] methodTable
= new AbstractJavaMethod[maxLen + 1][];
System.arraycopy(_methodTable, 0, methodTable, 0, _methodTable.length);
_methodTable = methodTable;
}
for (int len = fun.getMinArgLength(); len <= maxLen; len++)
{
AbstractJavaMethod [] methods = _methodTable[len];
if (methods == null)
{
_methodTable[len] = new AbstractJavaMethod[] { fun }
}
;
else
{
AbstractJavaMethod [] newMethods
= new AbstractJavaMethod[methods.length + 1];
System.arraycopy(methods, 0, newMethods, 0, methods.length);
newMethods[methods.length] = fun;
_methodTable[len] = newMethods;
}
}
}
return(this);
}
public JavaOverloadMethod(AbstractJavaMethod fun)
{
overload(fun);
}