protected override ScriptVariable CalculateInternal(ScriptExecutionEnvironment env)
{
ScriptVariable value = null;
if (this.InitialValue != null)
{
value = this.InitialValue.Calculate(env);
}
env.Variables.Declare(this.Identifier, value, this.Property);
return(value == null ? null : value.Clone());
}
protected override ScriptVariable CalculateInternal(ScriptExecutionEnvironment env)
{
ScriptVariable value = null;
if (this.RightValue != null)
{
value = this.RightValue.Calculate(env);
}
IVariableAccessor access = this.Accessor.GetAccessor(env);
if (this.Operator == OperatorType.Substitute)
{
access.Set(env, value == null ? null : value.Clone());
return(value);
}
else
{
ScriptVariable leftValue = access.Get(env);
ScriptVariable returnValue = operate(leftValue, value, this.Operator);
access.Set(env, returnValue);
return(returnValue);
}
}