scc

Simple C99 Compiler
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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:
cc.h | 3++-
code.c | 4++++
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; }