protected override Variable Evaluate(ParsingScript script)
{
// 1. Get the name of the variable.
string varName = Utils.GetToken(script, Constants.NEXT_OR_END_ARRAY);
Utils.CheckNotEnd(script, m_name);
// 2. Get the current value of the variable.
ParserFunction func = ParserFunction.GetFunction(varName);
Utils.CheckNotNull(varName, func);
Variable currentValue = func.GetValue(script);
Utils.CheckArray(currentValue, varName);
// 3. Get the variable to remove.
Variable item = Utils.GetItem(script);
Utils.CheckNonNegativeInt(item);
currentValue.Tuple.RemoveAt(item.AsInt());
ParserFunction.AddGlobalOrLocalVariable(varName,
new GetVarFunction(currentValue));
return(Variable.EmptyInstance);
}
public int GetArrayIndex(Variable indexVar)
{
if (this.Type != VarType.ARRAY)
{
return(-1);
}
if (indexVar.Type == VarType.NUMBER)
{
Utils.CheckNonNegativeInt(indexVar);
return((int)indexVar.Value);
}
string hash = indexVar.AsString();
int ptr = m_tuple.Count;
if (m_dictionary.TryGetValue(hash, out ptr) &&
ptr < m_tuple.Count)
{
return(ptr);
}
int result = -1;
if (!String.IsNullOrWhiteSpace(indexVar.String) &&
Int32.TryParse(indexVar.String, out result))
{
return(result);
}
return(-1);
}
protected override Variable Evaluate(ParsingScript script)
{
string substring;
// 1. Get the name of the variable.
string varName = Utils.GetToken(script, Constants.NEXT_ARG_ARRAY);
Utils.CheckNotEmpty(script, varName, m_name);
// 2. Get the current value of the variable.
ParserFunction func = ParserFunction.GetFunction(varName);
Variable currentValue = func.GetValue(script);
// 3. Take either the string part if it is defined,
// or the numerical part converted to a string otherwise.
string arg = currentValue.AsString();
// 4. Get the initial index of the substring.
Variable init = Utils.GetItem(script);
Utils.CheckNonNegativeInt(init);
// 5. Get the length of the substring if available.
bool lengthAvailable = Utils.SeparatorExists(script);
if (lengthAvailable)
{
Variable length = Utils.GetItem(script);
Utils.CheckPosInt(length);
if (init.Value + length.Value > arg.Length)
{
throw new ArgumentException("The total substring length is larger than [" +
arg + "]");
}
substring = arg.Substring((int)init.Value, (int)length.Value);
}
else
{
substring = arg.Substring((int)init.Value);
}
Variable newValue = new Variable(substring);
return(newValue);
}
public int GetArrayIndex(Variable indexVar)
{
if (this.Type != VarType.ARRAY)
{
return(-1);
}
if (indexVar.Type == VarType.NUMBER)
{
Utils.CheckNonNegativeInt(indexVar);
return((int)indexVar.Value);
}
string hash = indexVar.AsString();
int ptr = m_tuple.Count;
if (m_dictionary.TryGetValue(hash, out ptr) &&
ptr < m_tuple.Count)
{
return(ptr);
}
return(-1);
}