shell/math.c: rename arith_eval_hooks to arith_state, put error code into it

function                                             old     new   delta
expand_and_evaluate_arith                             79      89     +10
arith                                                675     674      -1
arith_lookup_val                                     151     142      -9
ash_arith                                            135     122     -13
arith_apply                                         1304    1269     -35
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/4 up/down: 10/-58)            Total: -48 bytes

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

1 files changed, 9 insertions, 10 deletions

diff --git a/shell/ash.c b/shell/ash.c
index f631e3d25..c27ab7de2 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -5442,22 +5442,21 @@ redirectsafe(union node *redir, int flags)
 static arith_t
 ash_arith(const char *s)
 {
-        arith_eval_hooks_t math_hooks;
+        arith_state_t math_state;
         arith_t result;
-        int errcode = 0;
 
-        math_hooks.lookupvar = lookupvar;
-        math_hooks.setvar    = setvar2;
-        //math_hooks.endofname = endofname;
+        math_state.lookupvar = lookupvar;
+        math_state.setvar    = setvar2;
+        //math_state.endofname = endofname;
 
         INT_OFF;
-        result = arith(s, &errcode, &math_hooks);
-        if (errcode < 0) {
-                if (errcode == -3)
+        result = arith(&math_state, s);
+        if (math_state.errcode < 0) {
+                if (math_state.errcode == -3)
                         ash_msg_and_raise_error("exponent less than 0");
-                if (errcode == -2)
+                if (math_state.errcode == -2)
                         ash_msg_and_raise_error("divide by zero");
-                if (errcode == -5)
+                if (math_state.errcode == -5)
                         ash_msg_and_raise_error("expression recursion loop detected");
                 raise_error_syntax(s);
         }