From 0dd0e1ad0c4fdd7e4090d588150628147b4171e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miquel=20Sabat=C3=A9=20Sol=C3=A0?= <mikisabate@gmail.com>
Date: Tue, 11 Dec 2012 12:23:04 -0500
Subject: [PATCH] cmd/gc: merge casep and casee labels

The code inside the casee and casep labels can perfectly be merged since
they essentially do the same. The character to be stored where cp points is
just the character contained by the c variable.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6845112
---
 src/cmd/gc/lex.c | 37 +++++++------------------------------
 1 file changed, 7 insertions(+), 30 deletions(-)

diff --git a/src/cmd/gc/lex.c b/src/cmd/gc/lex.c
index 1b433a9a24..6481ceb1e1 100644
--- a/src/cmd/gc/lex.c
+++ b/src/cmd/gc/lex.c
@@ -1296,13 +1296,13 @@ tnum:
 			if(cp == lexbuf+2)
 				yyerror("malformed hex constant");
 			if(c == 'p')
-				goto casep;
+				goto caseep;
 			goto ncu;
 		}
 	}
 
 	if(c == 'p')	// 0p begins floating point zero
-		goto casep;
+		goto caseep;
 
 	c1 = 0;
 	for(;;) {
@@ -1320,7 +1320,7 @@ tnum:
 	if(c == '.')
 		goto casedot;
 	if(c == 'e' || c == 'E')
-		goto casee;
+		goto caseep;
 	if(c == 'i')
 		goto casei;
 	if(c1)
@@ -1330,10 +1330,8 @@ tnum:
 dc:
 	if(c == '.')
 		goto casedot;
-	if(c == 'e' || c == 'E')
-		goto casee;
-	if(c == 'p' || c == 'P')
-		goto casep;
+	if(c == 'e' || c == 'E' || c == 'p' || c == 'P')
+		goto caseep;
 	if(c == 'i')
 		goto casei;
 
@@ -1369,29 +1367,8 @@ casedot:
 	if(c != 'e' && c != 'E')
 		goto caseout;
 
-casee:
-	*cp++ = 'e';
-	c = getc();
-	if(c == '+' || c == '-') {
-		*cp++ = c;
-		c = getc();
-	}
-	if(!yy_isdigit(c))
-		yyerror("malformed fp constant exponent");
-	while(yy_isdigit(c)) {
-		if(cp+10 >= ep) {
-			yyerror("identifier too long");
-			errorexit();
-		}
-		*cp++ = c;
-		c = getc();
-	}
-	if(c == 'i')
-		goto casei;
-	goto caseout;
-
-casep:
-	*cp++ = 'p';
+caseep:
+	*cp++ = c;
 	c = getc();
 	if(c == '+' || c == '-') {
 		*cp++ = c;