Switched to using an optional type

1 files changed, 14 insertions, 3 deletions

diff --git a/pattern.h b/pattern.h
index b903d5b..d12a25b 100644
--- a/pattern.h
+++ b/pattern.h
@@ -7,18 +7,29 @@
 #include "files.h"
 #include "types.h"
 
+typedef struct {
+    bool success;
+    union {
+        pat_t *pat;
+        struct {
+            const char *start, *end, *msg;
+        } error;
+    } value;
+} maybe_pat_t;
+
 __attribute__((returns_nonnull, nonnull(1,2)))
 pat_t *new_pat(file_t *f, const char *start, const char *end, size_t minlen, ssize_t maxlen, enum pattype_e type);
 __attribute__((nonnull))
-pat_t *bp_stringpattern(file_t *f, const char *str);
+maybe_pat_t bp_stringpattern(file_t *f, const char *str);
 __attribute__((nonnull(1,2)))
-pat_t *bp_replacement(file_t *f, pat_t *replacepat, const char *replacement);
+maybe_pat_t bp_replacement(file_t *f, pat_t *replacepat, const char *replacement);
 __attribute__((nonnull(1)))
 pat_t *chain_together(file_t *f, pat_t *first, pat_t *second);
 __attribute__((nonnull(1)))
 pat_t *either_pat(file_t *f, pat_t *first, pat_t *second);
 __attribute__((nonnull))
-pat_t *bp_pattern(file_t *f, const char *str);
+maybe_pat_t bp_pattern(file_t *f, const char *str);
+
 
 #endif
 // vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0