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List:       9fans
Subject:    Re: [9fans] Porting GO LANG
From:       erik quanstrom <quanstro () quanstro ! net>
Date:       2009-11-21 16:08:15
Message-ID: df6a1e4d63d8b4856583d174a868590f () ladd ! quanstro ! net
[Download RAW message or body]

it really isn't worth fighting.

/n/dump/2009/1120/sys/src/cmd/yacc.c:1918,1933 - yacc.c:1918,1940
  
  	/* i is the number of lines skipped */
  	i = 0;
- 	if(Bgetrune(finput) != '*')
- 		error("illegal comment");
  	c = Bgetrune(finput);
- 	while(c != Beof) {
- 		while(c == '*')
- 			if((c=Bgetrune(finput)) == '/')
- 				return i;
- 		if(c == '\n')
- 			i++;
+ 	if(c == '/'){
+ 		while((c = Bgetrune(finput)) != Beof)
+ 			if(c == '\n')
+ 				return 1;
+ 	}else{
+ 		if(c != '*')
+ 			error("illegal comment");
  		c = Bgetrune(finput);
+ 		while(c != Beof) {
+ 			while(c == '*')
+ 				if((c=Bgetrune(finput)) == '/')
+ 					return i;
+ 			if(c == '\n')
+ 				i++;
+ 			c = Bgetrune(finput);
+ 		}
  	}
  	error("EOF inside comment");
  	return 0;

and for 8a

/n/dump/2009/1120/sys/src/cmd/cc/lexbody:418,425 - /sys/src/cmd/cc/lexbody:418,424
  			for(;;) {
  				c = GETC();
  				if(c == '\n') {
- 					lineno++;
- 					goto l0;
+ 					goto l1;		/* return ; for ?a's benefit. */
  				}
  				if(c == EOF) {
  					yyerror("eof in comment");

- erik

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