public override ITypedValue GetValueInternal(ExpressionState state)
{
if (_name.Equals(_THIS))
{
return(state.GetActiveContextObject());
}
if (_name.Equals(_ROOT))
{
var obj = state.RootContextObject;
_exitTypeDescriptor = CodeFlow.ToDescriptorFromObject(obj.Value);
return(obj);
}
var result = state.LookupVariable(_name);
var value = result.Value;
if (value == null || !value.GetType().IsPublic)
{
// If the type is not public then when generateCode produces a checkcast to it
// then an IllegalAccessError will occur.
// If resorting to Object isn't sufficient, the hierarchy could be traversed for
// the first public type.
_exitTypeDescriptor = "Ljava/lang/Object";
}
else
{
_exitTypeDescriptor = CodeFlow.ToDescriptorFromObject(value);
}
// a null value will mean either the value was null or the variable was not found
return(result);
}
public override ITypedValue GetValueInternal(ExpressionState state)
{
var value = state.LookupVariable(_name);
if (value == TypedValue.NULL)
{
throw new SpelEvaluationException(StartPosition, SpelMessage.FUNCTION_NOT_DEFINED, _name);
}
if (value.Value is not MethodInfo)
{
// Possibly a static Java method registered as a function
throw new SpelEvaluationException(SpelMessage.FUNCTION_REFERENCE_CANNOT_BE_INVOKED, _name, value.GetType());
}
try
{
return(ExecuteFunctionJLRMethod(state, (MethodInfo)value.Value));
}
catch (SpelEvaluationException ex)
{
ex.Position = StartPosition;
throw;
}
}
protected internal override IValueRef GetValueRef(ExpressionState state)
{
if (_name.Equals(_THIS))
{
return(new TypedValueHolderValueRef(state.GetActiveContextObject(), this));
}
if (_name.Equals(_ROOT))
{
return(new TypedValueHolderValueRef(state.RootContextObject, this));
}
var result = state.LookupVariable(_name);
// a null value will mean either the value was null or the variable was not found
return(new VariableRef(_name, result, state.EvaluationContext));
}