scc

Simple C99 Compiler
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commit ba47ba8ffc19b3f386bbc01989dda5e0dd1d644d
parent d1e3fef8d6f06929405d377a1cb39eca367da123
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 21 Aug 2012 22:34:46 +0200

Added switch parsing

Diffstat:
flow.c | 7++++---
syntax.h | 4++--
tree.c | 3++-
3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/flow.c b/flow.c @@ -73,12 +73,13 @@ do_if(void) static struct node * do_switch(void) { + register struct node *e1; + expect(SWITCH); expect('('); - expr(); + e1 = expr(); expect(')'); - stmt(); - return NULL; + return node2(OSWITCH, e1, stmt()); } static struct node * diff --git a/syntax.h b/syntax.h @@ -3,14 +3,14 @@ extern unsigned char curctx; -enum { +enum opcode { OARY, OCALL, OFIELD, OPTR, OPOSTINC, OPOSTDEC, OPREINC, OPREDEC, OADDR, OINDIR, OMINUS, OPLUS, OCPL, ONEG, OMUL, ODIV, OMOD, OADD, OSUB, OSHL, OSHR, OLT, OGT, OGE, OLE, OEQ, ONE, OBAND, OBXOR, OBOR, OAND, OOR, OTERN, OASSIGN, OA_MUL, OA_DIV, OA_MOD, OA_ADD, OA_SUB, OA_SHL, OA_SHR, OA_AND, - OA_XOR, OA_OR, OSYM, OCOMP + OA_XOR, OA_OR, OSYM, OCOMP, OSWITCH }; struct node; diff --git a/tree.c b/tree.c @@ -172,7 +172,8 @@ prtree(register struct node *np) [OA_XOR] = {2, "^="}, [OA_OR] = {2, "|="}, [OSYM] = {0, "sym"}, - [OCOMP] = {255, "comp"} + [OCOMP] = {255, "comp"}, + [OSWITCH] = {2, "switch"} }; assert(np && np->op < ARRAY_SIZE(optab));