WebSVN – tendra.SVN – Diff – /branches/tendra5/src/utilities/sid/rule-firsts.c

+/*
+ * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of The TenDRA Project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id$
+ */
 /*
     		 Crown Copyright (c) 1997
     This TenDRA(r) Computer Program is subject to Copyright
     owned by the United Kingdom Secretary of State for Defence
     acting through the Defence Evaluation and Research Agency
     (DERA).  It is made available to Recipients with a
     royalty-free licence for its use, reproduction, transfer
     to other parties and amendment for any purpose not excluding
     product development provided that any such use et cetera
     shall be deemed to be acceptance of the following conditions:-
         (1) Its Recipients shall ensure that this Notice is
         reproduced upon any copies or amended versions of it;
         (2) Any amended version of it shall be clearly marked to
         show both the nature of and the organisation responsible
         for the relevant amendment or amendments;
         (3) Its onward transfer from a recipient to another
         party shall be deemed to be that party's acceptance of
         these conditions;
         (4) DERA gives no warranty or assurance as to its
         quality or suitability for any purpose and DERA accepts
         no liability whatsoever in relation to any use to which
         it may be put.
 */
 #include "table.h"
 /*--------------------------------------------------------------------------*/
 void
-rule_compute_first_set_1 PROTO_N ((rule))
+rule_compute_first_set_1(RuleP rule)
-			 PROTO_T (RuleP rule)
+{
     AltP     alt;
     unsigned priority = 0;
-    if (rule_has_computed_first_set (rule)) {
+    if (rule_has_computed_first_set(rule)) {
 	return;
-    } else if (rule_is_computing_first_set (rule)) {
+    } else if (rule_is_computing_first_set(rule)) {
-	E_cannot_compute_first_set (rule);
+	E_cannot_compute_first_set(rule);
 	return;
+    }
-    rule_computing_first_set (rule);
+    rule_computing_first_set(rule);
-    for (alt = rule_alt_head (rule); alt; alt = alt_next (alt)) {
+    for (alt = rule_alt_head(rule); alt; alt = alt_next(alt)) {
 	BoolT see_through = TRUE;
 	BoolT no_action   = TRUE;
-	ItemP item        = alt_item_head (alt);
+	ItemP item        = alt_item_head(alt);
 	ItemP initial     = item;
-	for (; see_through && (item != NIL (ItemP)); item = item_next (item)) {
+	for (; see_through && (item != NIL(ItemP)); item = item_next(item)) {
-	    switch (item_type (item)) EXHAUSTIVE {
+	    switch (item_type(item))EXHAUSTIVE {
 	      case ET_PREDICATE:
 		if (item != initial) {
-		    E_see_to_predicate (entry_key (item_entry (item)), rule);
+		    E_see_to_predicate(entry_key(item_entry(item)), rule);
+		}
-		entry_list_add_if_missing (rule_predicate_first (rule),
+		entry_list_add_if_missing(rule_predicate_first(rule),
-					   item_entry (item));
+					  item_entry(item));
 		see_through = FALSE;
 		break;
 	      case ET_RENAME:
 	      case ET_ACTION:
 		no_action = FALSE;
 		break;
 	      case ET_RULE: {
-		  EntryP     entry      = item_entry (item);
+		  EntryP     entry      = item_entry(item);
-		  RuleP      item_rule  = entry_get_rule (entry);
+		  RuleP      item_rule  = entry_get_rule(entry);
-		  EntryListP pred_first = rule_predicate_first (item_rule);
+		  EntryListP pred_first = rule_predicate_first(item_rule);
 		  unsigned   item_priority;
-		  rule_compute_first_set_1 (item_rule);
+		  rule_compute_first_set_1(item_rule);
 		  if ((item != initial) &&
-		      (!entry_list_is_empty (pred_first))) {
+		     (!entry_list_is_empty(pred_first))) {
-		      E_see_to_rule_predicate (item_rule, rule);
+		      E_see_to_rule_predicate(item_rule, rule);
+		  }
-		  bitvec_or (rule_first_set (rule),
+		  bitvec_or(rule_first_set(rule), rule_first_set(item_rule));
-			     rule_first_set (item_rule));
-		  entry_list_append (rule_predicate_first (rule), pred_first);
+		  entry_list_append(rule_predicate_first(rule), pred_first);
-		  see_through   = rule_is_see_through (item_rule);
+		  see_through   = rule_is_see_through(item_rule);
-		  item_priority = rule_get_priority (item_rule);
+		  item_priority = rule_get_priority(item_rule);
 		  if ((item_priority > priority) && no_action) {
 		      priority = item_priority;
+		  }
+	      }
 		break;
 	      case ET_BASIC: {
-		  BasicP basic = entry_get_basic (item_entry (item));
+		  BasicP basic = entry_get_basic(item_entry(item));
-		  bitvec_set (rule_first_set (rule), basic_terminal (basic));
+		  bitvec_set(rule_first_set(rule), basic_terminal(basic));
 		  see_through = FALSE;
+	      }
 		break;
 	      case ET_NON_LOCAL:
 	      case ET_NAME:
 	      case ET_TYPE:
 		UNREACHED;
+	    }
+	}
 	if (see_through) {
-	    rule_see_through (rule);
+	    rule_see_through(rule);
+	}
+    }
-    if (rule_has_empty_alt (rule)) {
+    if (rule_has_empty_alt(rule)) {
-	rule_see_through (rule);
+	rule_see_through(rule);
+    }
-    rule_set_priority (rule, priority + 1);
+    rule_set_priority(rule, priority + 1);
-    if (rule_is_see_through (rule) && bitvec_is_full (rule_first_set (rule))) {
+    if (rule_is_see_through(rule) && bitvec_is_full(rule_first_set(rule))) {
-	E_redundant_see_through_alt (rule);
+	E_redundant_see_through_alt(rule);
+    }
-    rule_computed_first_set (rule);
+    rule_computed_first_set(rule);
+}
 void
-rule_compute_first_set PROTO_N ((entry, gclosure))
+rule_compute_first_set(EntryP entry, GenericP gclosure)
-		       PROTO_T (EntryP   entry X
-				GenericP gclosure)
+{
-    UNUSED (gclosure);
+    UNUSED(gclosure);
-    if (entry_is_rule (entry)) {
+    if (entry_is_rule(entry)) {
-	RuleP rule = entry_get_rule (entry);
+	RuleP rule = entry_get_rule(entry);
-	rule_compute_first_set_1 (rule);
+	rule_compute_first_set_1(rule);
+    }
+}
 /*
  * Local variables(smf):

Subversion Repositories tendra.SVN

(root)/branches/tendra5/src/utilities/sid/rule-firsts.c – Rev 5 → 6