private function_parameter Parse_function_parameter()
{
function_parameter _self = null;
List <minus> __minus = new List <minus>();
var _minus = Parse_minus();
while (_minus != null)
{
__minus.Add(_minus); _minus = Parse_minus();;
}
if (__minus.Count > 0)
{
_minus = new minus(__minus);
}
var _ident_lhs = Parse_Paren();
var _ident_rhs = Parse_Paren(); if (_ident_rhs != null && _ident_rhs.expression == "(")
{
_ident_rhs = null; _index--;
}
// this allows us to have functions with no parameters by checking for back to back of opposite direction.
if (_ident_lhs != null && _ident_rhs == null)
{
var _parameter_sequence = Parse_parameter_sequence();
_ident_rhs = Parse_Paren(); // this checks to see if after _parameter_sequence maybe we have a closing param
if ((_parameter_sequence == null && _ident_rhs != null) || (_parameter_sequence != null && _ident_rhs != null) || _minus != null) // however, if we are missing a parameter we must have a closing ) to fill out a paramless function or we may have a leading minus as in --(-6+2)
{
_self = new function_parameter(_minus, _ident_lhs, _parameter_sequence, _ident_rhs);
}
}
else if (_ident_lhs != null && _ident_rhs != null)
{
_self = new function_parameter(_minus, _ident_lhs, null, _ident_rhs);
}
return(_self);
}
public factor(signed_function _signed_function, function_parameter _function_parameter)
{
signed_function = _signed_function;
function_parameter = _function_parameter;
expression = signed_function?.expression + function_parameter.expression;
}
