+
+ if (result._tag == "Some"){
+ result.value.matched_type = TokenType.INT;
+ }
+ return result;
+ }
+ let space = (x : MatcheePair) =>{
+ let wrapped_x = toSome(x);
+ let s_aux = orDo(match1Char(' '), match1Char('\t')); // (" " | "\t")
+ var result = thenDo(thenDo(wrapped_x, s_aux), zeroOrMoreDo(s_aux));
+ if (result._tag == "Some"){
+ result.value.matched_type = TokenType.SP;
+ }
+ return result;
+ }
+ let newline = (x : MatcheePair) =>{
+ let wrapped_x = toSome(x);
+ // nl = \r?\n
+ let result = thenDo(thenDo(wrapped_x,
+ zeroOrOnceDo(match1Char('\r'))), match1Char('\n'));
+ if (result._tag == "Some"){
+ result.value.matched_type = TokenType.NL;
+ }
+ return result;
+ }
+
+ let term = (token_list : Array<Token>, x : Some<MatcheePair>)=>{
+ var ln = 1;
+ var col = 0;
+ var old_x = x;
+ let term_list = [newline, space, integer];
+ let term_aux = term_list.reduce((x,y)=> orDo(x,y));
+
+ var new_x : Maybe<MatcheePair> = thenDo(old_x, term_aux);
+ while (new_x._tag != "None"){
+ if (new_x.value.matched_type != TokenType.NL){
+ col += new_x.value.matched.length;
+ token_list.push({text : new_x.value.matched,
+ type: new_x.value.matched_type,
+ ln : ln,
+ col : col});
+
+ }
+ else{
+ col = 0;
+ ln += 1;
+
+ token_list.push({text : new_x.value.matched,
+ type: new_x.value.matched_type,
+ ln : ln,
+ col : col});
+
+ }
+
+
+ old_x = toSome({matched : "",
+ remained : new_x.value.remained});
+ new_x = thenDo(old_x, term_aux);
+ }
+
+ if (old_x.value.remained.length){
+ console.log(token_list);
+ throw new Error("the code can't be tokenized is near Ln. "+ln+", Col."+col
+ +", starting with "+ old_x.value.remained.substring(0,10));
+ }
+
+ return token_list;