small optimizations in switch order

6 files changed, 36 insertions, 35 deletions

diff --git a/lapi.c b/lapi.c
index 63e6dbfd..edce0266 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 1.17 1998/01/02 17:46:32 roberto Exp roberto $
+** $Id: lapi.c,v 1.18 1998/01/07 16:26:48 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -39,12 +39,12 @@ static int normalized_type (TObject *o)
 {
   int t = ttype(o);
   switch (t) {
-    case LUA_T_CLMARK:
-      return LUA_T_CLOSURE;
     case LUA_T_PMARK:
       return LUA_T_PROTO;
     case LUA_T_CMARK:
       return LUA_T_CPROTO;
+    case LUA_T_CLMARK:
+      return LUA_T_CLOSURE;
     default:
       return t;
   }
@@ -382,12 +382,12 @@ int lua_tag (lua_Object lo)
         return o->value.ts->u.d.tag;
       case LUA_T_ARRAY:
         return o->value.a->htag;
-      case LUA_T_CLOSURE: case LUA_T_CLMARK:
-        return o->value.cl->consts[0].ttype;
       case LUA_T_PMARK:
         return LUA_T_PROTO;
       case LUA_T_CMARK:
         return LUA_T_CPROTO;
+      case LUA_T_CLOSURE: case LUA_T_CLMARK:
+        return o->value.cl->consts[0].ttype;
 #ifdef DEBUG
       case LUA_T_LINE:
         lua_error("internal error");
diff --git a/lgc.c b/lgc.c
index c5a99e62..38cc50d3 100644
--- a/lgc.c
+++ b/lgc.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.c,v 1.13 1997/12/15 16:17:20 roberto Exp roberto $
+** $Id: lgc.c,v 1.14 1997/12/17 20:48:58 roberto Exp roberto $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -87,12 +87,12 @@ static int ismarked (TObject *o)
   switch (o->ttype) {
     case LUA_T_STRING: case LUA_T_USERDATA:
       return o->value.ts->head.marked;
+    case LUA_T_ARRAY:
+      return o->value.a->head.marked;
     case LUA_T_CLOSURE:
       return o->value.cl->head.marked;
     case LUA_T_PROTO:
       return o->value.tf->head.marked;
-    case LUA_T_ARRAY:
-      return o->value.a->head.marked;
 #ifdef DEBUG
     case LUA_T_LINE: case LUA_T_CLMARK:
     case LUA_T_CMARK: case LUA_T_PMARK:
diff --git a/llex.c b/llex.c
index a246aff9..3e647b10 100644
--- a/llex.c
+++ b/llex.c
@@ -1,5 +1,5 @@
 /*
-** $Id: llex.c,v 1.11 1997/12/17 20:48:58 roberto Exp roberto $
+** $Id: llex.c,v 1.12 1997/12/22 17:52:20 roberto Exp roberto $
 ** Lexical Analizer
 ** See Copyright Notice in lua.h
 */
@@ -268,15 +268,16 @@ int luaY_lex (YYSTYPE *l)
   LS->linelasttoken = LS->linenumber;
   while (1) {
     switch (LS->current) {
-      case '\n':
-        inclinenumber(LS);
-        LS->linelasttoken = LS->linenumber;
-        continue;
 
       case ' ': case '\t': case '\r':  /* CR: to avoid problems with DOS */
         next(LS);
         continue;
 
+      case '\n':
+        inclinenumber(LS);
+        LS->linelasttoken = LS->linenumber;
+        continue;
+
       case '-':
         save_and_next(LS);
         if (LS->current != '-') return '-';
diff --git a/lobject.c b/lobject.c
index a8c74c7f..981e236e 100644
--- a/lobject.c
+++ b/lobject.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 1.8 1997/12/15 16:17:20 roberto Exp roberto $
+** $Id: lobject.c,v 1.9 1997/12/26 18:38:16 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -48,9 +48,9 @@ int luaO_equalObj (TObject *t1, TObject *t2)
     case LUA_T_NUMBER: return nvalue(t1) == nvalue(t2);
     case LUA_T_STRING: case LUA_T_USERDATA: return svalue(t1) == svalue(t2);
     case LUA_T_ARRAY: return avalue(t1) == avalue(t2);
-    case LUA_T_CLOSURE: return t1->value.cl == t2->value.cl;
     case LUA_T_PROTO: return tfvalue(t1)  == tfvalue(t2);
     case LUA_T_CPROTO: return fvalue(t1)  == fvalue(t2);
+    case LUA_T_CLOSURE: return t1->value.cl == t2->value.cl;
     default:
      lua_error("internal error in `lua_equalObj'");
      return 0; /* UNREACHEABLE */
diff --git a/lstrlib.c b/lstrlib.c
index cca70bc5..34b9da42 100644
--- a/lstrlib.c
+++ b/lstrlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.4 1997/12/15 17:58:49 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.5 1997/12/17 20:48:58 roberto Exp roberto $
 ** Standard library for strings and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -165,14 +165,14 @@ static int matchclass (int c, int cl)
   int res;
   if (c == 0) return 0;
   switch (tolower((unsigned char)cl)) {
-    case 'a' : res = isalpha((unsigned char)c); break;
-    case 'c' : res = iscntrl((unsigned char)c); break;
+    case 'w' : res = isalnum((unsigned char)c); break;
     case 'd' : res = isdigit((unsigned char)c); break;
-    case 'l' : res = islower((unsigned char)c); break;
-    case 'p' : res = ispunct((unsigned char)c); break;
     case 's' : res = isspace((unsigned char)c); break;
+    case 'a' : res = isalpha((unsigned char)c); break;
+    case 'p' : res = ispunct((unsigned char)c); break;
+    case 'l' : res = islower((unsigned char)c); break;
     case 'u' : res = isupper((unsigned char)c); break;
-    case 'w' : res = isalnum((unsigned char)c); break;
+    case 'c' : res = iscntrl((unsigned char)c); break;
     default: return (cl == c);
   }
   return (islower((unsigned char)cl) ? res : !res);
@@ -182,12 +182,12 @@ static int matchclass (int c, int cl)
 int luaI_singlematch (int c, char *p, char **ep)
 {
   switch (*p) {
-    case '\0':
-      *ep = p;
-      return 0;
     case '.':
       *ep = p+1;
       return (c != 0);
+    case '\0':
+      *ep = p;
+      return 0;
     case ESC:
       if (*(++p) == '\0')
         luaL_verror("incorrect pattern (ends with `%c')", ESC);
@@ -294,6 +294,12 @@ static char *match (char *s, char *p, struct Capture *cap)
             return res;
           p=ep+1; goto init;  /* else return match(s, ep+1, cap); */
         }
+        case '?': {  /* optional */
+          char *res;
+          if (s1 && (res = match(s1, ep+1, cap)))
+            return res;
+          p=ep+1; goto init;  /* else return match(s, ep+1, cap); */
+        }
         case '-': {  /* repetition */
           char *res;
           if ((res = match(s, ep+1, cap)) != 0)
@@ -305,12 +311,6 @@ static char *match (char *s, char *p, struct Capture *cap)
           else
             return NULL;
         }
-        case '?': {  /* optional */
-          char *res;
-          if (s1 && (res = match(s1, ep+1, cap)))
-            return res;
-          p=ep+1; goto init;  /* else return match(s, ep+1, cap); */
-        }
         default:
           if (s1) { s=s1; p=ep; goto init; }  /* return match(s1, ep, cap); */
           else return NULL;
diff --git a/ltable.c b/ltable.c
index f182e4ba..0c91833a 100644
--- a/ltable.c
+++ b/ltable.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.c,v 1.8 1997/12/09 13:35:19 roberto Exp roberto $
+** $Id: ltable.c,v 1.9 1997/12/15 16:17:20 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -36,8 +36,8 @@ static long int hashindex (TObject *ref)
     case LUA_T_STRING: case LUA_T_USERDATA:
       h = (IntPoint)tsvalue(ref);
       break;
-    case LUA_T_CLOSURE:
-      h = (IntPoint)clvalue(ref);
+    case LUA_T_ARRAY:
+      h = (IntPoint)avalue(ref);
       break;
     case LUA_T_PROTO:
       h = (IntPoint)tfvalue(ref);
@@ -45,8 +45,8 @@ static long int hashindex (TObject *ref)
     case LUA_T_CPROTO:
       h = (IntPoint)fvalue(ref);
       break;
-    case LUA_T_ARRAY:
-      h = (IntPoint)avalue(ref);
+    case LUA_T_CLOSURE:
+      h = (IntPoint)clvalue(ref);
       break;
     default:
       lua_error("unexpected type to index table");