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authorDenys Vlasenko <vda.linux@googlemail.com>2018-12-25 01:21:16 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2018-12-25 01:21:16 +0100
commitd0238d83f0311cfab52897acc739148879598621 (patch)
tree71bf3d58d7f6d2d3679cd77ce9b6c5e972b0090f /miscutils
parentbb116031a038237ecc82896fb6b12b89b72f8d91 (diff)
downloadbusybox-d0238d83f0311cfab52897acc739148879598621.tar.gz
bc: simplify bc_parse_expr_empty_ok()
function old new delta bc_parse_expr_empty_ok 1819 1810 -9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/bc.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index 5d9bae47e..a57de97a5 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -591,7 +591,7 @@ enum {
+ (EXBITS(0,1,1,0,0,0,0,0) << (7*8)) // 56: return scale sqrt while
#undef EXBITS
};
-static ALWAYS_INLINE long bc_parse_exprs(unsigned i)
+static ALWAYS_INLINE long lex_allowed_in_bc_expr(unsigned i)
{
#if ULONG_MAX > 0xffffffff
// 64-bit version (will not work correctly for 32-bit longs!)
@@ -4662,7 +4662,6 @@ static BC_STATUS zbc_parse_stmt_or_funcdef(BcParse *p)
static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
{
BcInst prev = XC_INST_PRINT;
- BcLexType top, t = p->l.lex;
size_t nexprs = 0, ops_bgn = p->ops.len;
unsigned nparens, nrelops;
bool paren_first, paren_expr, rprn, get_token, assign, bin_last;
@@ -4673,10 +4672,15 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
paren_expr = rprn = get_token = assign = false;
bin_last = true;
- for (; bc_parse_exprs(t); t = p->l.lex) {
- BcStatus s = BC_STATUS_SUCCESS;
+ for (;;) {
+ BcStatus s;
+ BcLexType t = p->l.lex;
+
+ if (!lex_allowed_in_bc_expr(t))
+ break;
dbg_lex("%s:%d t:%d", __func__, __LINE__, t);
+ s = BC_STATUS_SUCCESS;
switch (t) {
case BC_LEX_OP_INC:
case BC_LEX_OP_DEC:
@@ -4825,7 +4829,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
exit_loop:
while (p->ops.len > ops_bgn) {
- top = BC_PARSE_TOP_OP(p);
+ BcLexType top = BC_PARSE_TOP_OP(p);
assign = (top >= BC_LEX_OP_ASSIGN_POWER && top <= BC_LEX_OP_ASSIGN);
if (top == BC_LEX_LPAREN || top == BC_LEX_RPAREN)