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authorKaz Kylheku <kaz@kylheku.com>2021-07-20 23:26:38 -0700
committerKaz Kylheku <kaz@kylheku.com>2021-07-20 23:26:38 -0700
commit5613a3b0d42a89d061df18cd9ae4e1008696572c (patch)
treecf810df036b366a9f3fab00117db639e2b6c4378 /parser.h
parenta6f0c72306da0c628be9e180288f79fbf29bfa57 (diff)
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parse/eval: use weak-both hash tables.
This addresses the problem that a4c376979d15323ad729e92e41ba43768e8dc163 tried to fix. * eval.c (eval_init): Make all the top-level binding tables, top_fb, top_vb, top_mb, top_smb, special and builtin, weak-both tables: keys and values are weak. This way, the entries disappear if both key and value are unreachable, even if they refer to each other. (eval_compat_fixup): In 266 or earlier compat mode, weak-both tables don't have the right semantics, so we tweak the tables to weak-key tables. * parser.c (parse_init): Same treatment for stream_parser_hash. We want an entry to disappear from the hash if neither the parser nor the stream are reachable. (parse_compat_fixup): New function. * parser.h (parse_compat_function): Declared. * hash.c, hash.h (tweak_hash): New function. * lib.c (compat_fixup): Call parse_compat_fixup.
Diffstat (limited to 'parser.h')
-rw-r--r--parser.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/parser.h b/parser.h
index 3d682daa..b504b083 100644
--- a/parser.h
+++ b/parser.h
@@ -148,3 +148,4 @@ val parser_set_lineno(val self, val stream, val lineno);
val parser_errors(val parser);
val parse_errors(val stream);
void parse_init(void);
+void parse_compat_fixup(int compat_ver);