This module is a very simple parser for parameters recognition. It recognizes given parameters and their values. As input it becomes list of parameters and their values in format [ParameterInput] and input String where parameters will be searched. As output it deliveres recognized parameters and values in format [ParameterOutput], where only these parameters are present which have been found in the input string. In output list each exisitng parameter has exactly one value - this one that has been recognized in the input string. Parameters in the input string have to be always given in following format: (<flagname> <parameter>)*

Example how to use it.

 let paramsList = matchParamsL params inputText
 let paramsTree = matchParamsT paramsList
 params :: [ParameterInput]
 params = [(-pl1,algNum),(-pl2,algNum),
          (-br1,0:(map show [5..30])),(-br2,0:(map show [5..30])),
          (-dp1,0:(map show [3..8])),(-dp2,0:(map show [3..8])),
          (-verbose,[0,1,2]),
          (-evaluator,[only,all])]