scc

commit 60170fa8ff5a4d0ffc73cf069eb190ea99386cc0
parent d128d9dd0113d32df0ede231e1d945684b9fab29
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu,  3 Apr 2014 21:34:44 +0200

Add post increment and pre increment

Diffstat:
M
cc.h
 | 
3
++-
M
code.c
 | 
4
++++
M
expr.c
 | 
7
+++++++

3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/cc.h b/cc.h
@@ -213,7 +213,8 @@ typedef struct node {
 typedef void (*Inst)(Node *);
 
 enum {
-	OCAST, OPTR, OADD, OARY, OSIZE, OMUL, OSUB
+	OCAST, OPTR, OADD, OARY, OSIZE, OMUL, OSUB,
+	OINC, ODEC, OPINC, OPDEC
 };
 
 extern void
diff --git a/code.c b/code.c
@@ -8,6 +8,10 @@ char *opcodes[] = {
 	[OADD] = "+",
 	[OMUL] = "*",
 	[OARY] = "'",
+	[OINC] = ":+",
+	[ODEC] = ":-",
+	[OPINC] = ";+",
+	[OPDEC] =  ";=",
 	[OSIZE] = "#",
 	[OPTR] = "@"
 };
diff --git a/expr.c b/expr.c
@@ -139,6 +139,7 @@ static Node *
 postfix(void)
 {
 	Node *np1, *np2;
+	char op;
 
 	np1 = primary();
 	for (;;) {
@@ -149,6 +150,12 @@ postfix(void)
 			np1 = array(np1, np2);
 			expect(']');
 			break;
+		case DEC:	 case INC:
+			op = (yytoken == INC) ? OPINC : OPDEC;
+			/* TODO: check that the the base type is a complete type */
+			np1 = unarycode(op, np1->type, np1);
+			next();
+			break;
 		default:
 			return np1;
 		}