awk: make ltclass ("last token class") local to next_token()

function                                             old     new   delta
next_token                                           784     790      +6
next_input_file                                      219     216      -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 6/-3)                Total: 3 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 10 insertions, 14 deletions

diff --git a/editors/awk.c b/editors/awk.c
index 9826a57c6..418bda160 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -556,7 +556,6 @@ struct globals2 {
 
         uint32_t next_token__save_tclass;
         uint32_t next_token__save_info;
-        uint32_t next_token__ltclass;
         smallint next_token__concat_inserted;
 
         smallint next_input_file__files_happen;
@@ -615,7 +614,7 @@ struct globals2 {
 #define rsplitter    (G.rsplitter   )
 #define INIT_G() do { \
         SET_PTR_TO_GLOBALS((char*)xzalloc(sizeof(G1)+sizeof(G)) + sizeof(G1)); \
-        G.next_token__ltclass = TC_OPTERM; \
+        t_tclass = TC_OPTERM; \
         G.evaluate__seed = 1; \
 } while (0)
 
@@ -1102,13 +1101,13 @@ static uint32_t next_token(uint32_t expected)
 #define concat_inserted (G.next_token__concat_inserted)
 #define save_tclass     (G.next_token__save_tclass)
 #define save_info       (G.next_token__save_info)
-/* Initialized to TC_OPTERM: */
-#define ltclass         (G.next_token__ltclass)
 
         char *p, *s;
         const char *tl;
-        uint32_t tc;
         const uint32_t *ti;
+        uint32_t tc, last_token_class;
+
+        last_token_class = t_tclass; /* t_tclass is initialized to TC_OPTERM */
 
         debug_printf_parse("%s() expected(%x):", __func__, expected);
         debug_parse_print_tc(expected);
@@ -1245,15 +1244,15 @@ static uint32_t next_token(uint32_t expected)
                 g_pos = p;
 
                 /* skipping newlines in some cases */
-                if ((ltclass & TC_NOTERM) && (tc & TC_NEWLINE))
+                if ((last_token_class & TC_NOTERM) && (tc & TC_NEWLINE))
                         goto readnext;
 
                 /* insert concatenation operator when needed */
                 debug_printf_parse("%s: concat_inserted if all nonzero: %x %x %x %x\n", __func__,
-                        (ltclass & TC_CONCAT1), (tc & TC_CONCAT2), (expected & TC_BINOP),
-                        !(ltclass == TC_LENGTH && tc == TC_SEQSTART));
-                if ((ltclass & TC_CONCAT1) && (tc & TC_CONCAT2) && (expected & TC_BINOP)
-                 && !(ltclass == TC_LENGTH && tc == TC_SEQSTART) /* but not for "length(..." */
+                        (last_token_class & TC_CONCAT1), (tc & TC_CONCAT2), (expected & TC_BINOP),
+                        !(last_token_class == TC_LENGTH && tc == TC_SEQSTART));
+                if ((last_token_class & TC_CONCAT1) && (tc & TC_CONCAT2) && (expected & TC_BINOP)
+                 && !(last_token_class == TC_LENGTH && tc == TC_SEQSTART) /* but not for "length(..." */
                 ) {
                         concat_inserted = TRUE;
                         save_tclass = tc;
@@ -1267,7 +1266,7 @@ static uint32_t next_token(uint32_t expected)
         }
         /* Are we ready for this? */
         if (!(t_tclass & expected)) {
-                syntax_error((ltclass & (TC_NEWLINE | TC_EOF)) ?
+                syntax_error((last_token_class & (TC_NEWLINE | TC_EOF)) ?
                                 EMSG_UNEXP_EOS : EMSG_UNEXP_TOKEN);
         }
 
@@ -1275,13 +1274,10 @@ static uint32_t next_token(uint32_t expected)
         debug_parse_print_tc(t_tclass);
         debug_printf_parse("\n");
 
-        ltclass = t_tclass;
-
         return t_tclass;
 #undef concat_inserted
 #undef save_tclass
 #undef save_info
-#undef ltclass
 }
 
 static void rollback_token(void)