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authorKaz Kylheku <kaz@kylheku.com>2011-09-29 22:02:03 -0700
committerKaz Kylheku <kaz@kylheku.com>2011-09-29 22:02:03 -0700
commit8c0902a00ad68bb3f830274342de608cd36f304d (patch)
tree7dbe505d7369b1ba52236b642b79a1a02fb8f741 /match.c
parentb177dea74e5280ccaeeba4bd90fdf6d7967035f1 (diff)
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* match.c (match_line): Implemented horizontal all, some,
none, maybe and cases directives. (match_files): Recognize horizontal version of these directives by the presence of the extra symbol t and do not process. Also, bugfix in the all directive: not resetting the all_match flag when short circuiting out. * parser.y (clause_parts_h, additional_parts_h): New nonterminals. (elem): New clauses added.
Diffstat (limited to 'match.c')
-rw-r--r--match.c52
1 files changed, 49 insertions, 3 deletions
diff --git a/match.c b/match.c
index 68f05600..0ed7daed 100644
--- a/match.c
+++ b/match.c
@@ -562,6 +562,52 @@ next_coll:
val rev = cons(car(pair), nreverse(cdr(pair)));
bindings = cons(rev, bindings);
}
+ } else if (directive == all_s || directive == some_s ||
+ directive == none_s || directive == maybe_s ||
+ directive == cases_s)
+ {
+ val specs;
+ val all_match = t;
+ val some_match = nil;
+ val max_pos = pos;
+
+ for (specs = rest(rest(elem)); specs != nil; specs = cdr(specs)) {
+ val nested_spec = first(specs);
+ cons_bind (new_bindings, new_pos,
+ match_line(bindings, nested_spec, dataline, pos,
+ spec_lineno, data_lineno, file));
+ if (new_pos) {
+ bindings = new_bindings;
+ some_match = t;
+ if (gt(new_pos, max_pos))
+ max_pos = new_pos;
+ if (directive == cases_s || directive == none_s)
+ break;
+ } else {
+ all_match = nil;
+ if (directive == all_s)
+ break;
+ }
+ }
+
+ if (directive == all_s && !all_match) {
+ debuglf(spec_lineno, lit("all: some clauses didn't match"), nao);
+ return nil;
+ }
+
+ if ((directive == some_s || directive == cases_s) && !some_match) {
+ debuglf(spec_lineno, lit("some/cases: no clauses matched"), nao);
+ return nil;
+ }
+
+ if (directive == none_s && some_match) {
+ debuglf(spec_lineno, lit("none: some clauses matched"), nao);
+ return nil;
+ }
+
+ /* No check for maybe, since it always succeeds. */
+
+ pos = max_pos;
} else if (consp(directive) || stringp(directive)) {
cons_bind (find, len, search_str_tree(dataline, elem, pos, nil));
val newpos;
@@ -1268,8 +1314,8 @@ repeat_spec_same_data:
if3(data, cons(data, num(data_lineno)), t));
return nil;
}
- } else if (sym == some_s || sym == all_s || sym == none_s ||
- sym == maybe_s || sym == cases_s)
+ } else if ((sym == some_s || sym == all_s || sym == none_s ||
+ sym == maybe_s || sym == cases_s) && second(first_spec) != t)
{
val specs;
val all_match = t;
@@ -1302,9 +1348,9 @@ repeat_spec_same_data:
if (sym == cases_s || sym == none_s)
break;
} else {
+ all_match = nil;
if (sym == all_s)
break;
- all_match = nil;
}
}