scc

commit fb65fca0b3c45ded10eaac0d5d0b1a83d7ab9c66
parent da0ce9f484c0d744fed1e22af2651734c4830d73
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 15 Apr 2014 17:27:05 +0200

Implement comma operator

This operator was recognized but was not implemented

Diffstat:
M
cc.h
 | 
1
+
M
code.c
 | 
3
++-
M
expr.c
 | 
13
++++++++-----

3 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/cc.h b/cc.h
@@ -224,6 +224,7 @@ enum {
 	OBAND, OBXOR, OBOR, OASSIGN, OA_MUL, OA_DIV,
 	OA_MOD, OA_ADD, OA_SUB, OA_SHL, OA_SHR,
 	OA_AND, OA_XOR, OA_OR, OADDR,ONEG, OCPL, OEXC,
+	OCOMMA,
 	/*
 	  * Complementary relational operators only differ in less
 	 * significant bit
diff --git a/code.c b/code.c
@@ -43,7 +43,8 @@ char *opcodes[] = {
 	[ONEG] = "_",
 	[OCPL] = "~",
 	[OAND] = "m",
-	[OOR] = "s"
+	[OOR] = "s",
+	[OCOMMA] = ","
 };
 
 Node *
diff --git a/expr.c b/expr.c
@@ -707,10 +707,13 @@ error:
 Node *
 expr(void)
 {
-	register Node *np;
+	register Node *np1, *np2;
 
-	do
-		np = assign();
-	while (yytoken == ',');
-	return np;
+	np1 = assign();
+	while (accept(',')) {
+		np2 = assign();
+		np1 = bincode(OCOMMA, np2->type, np1, np2);
+	}
+
+	return np1;
 }