#!/usr/bin/env runawk 

#use "tokenre.awk" 

# This demo splits input line into tokens according to regexp that
# defines lexem of hypotetic programming language.

# Input files for this demo: examples/demo_tokenre2.in*

BEGIN { 
	re =         "if|then|else|while|do|end" 
	re = re "|" "[0-9]+([.][0-9]+)?" 
	re = re "|" ":=|=|<|>|!=|[+]|-|[*]|/|[.][.]" 
	re = re "|" "[()]" 
	re = re "|" "[[:alpha:]_][[:alnum:]_]*" 
	re = re "|" "'[^']*'" 
} 

{ 
	cnt = splitre0(arr, re)
	for (i=1; i <= cnt; ++i){ 
		print arr [i]
	} 
	print "<NL>" 
}