Conf: Improve handling of keywords

For whatever reason, parser allocated a symbol for every parsed keyword
in each scope. That wasted time and memory. The effect is worsened with
recent changes allowing local scopes, so keywords often promote soft
scopes (with no symbols) to real scopes.

Do not allocate a symbol for a keyword. Take care of keywords that could
be promoted to symbols (kw_sym) and do it explicitly.

1 files changed, 3 insertions, 0 deletions

diff --git a/conf/conf.h b/conf/conf.h
index cb47e7d0..d40f955e 100644
--- a/conf/conf.h
+++ b/conf/conf.h
@@ -191,6 +191,9 @@ struct symbol *cf_find_local_symbol(const struct config *cfg, const struct sym_s
 static inline struct symbol *cf_find_symbol(const struct config *cfg, const byte *c)
 { return cf_find_local_symbol(cfg, cfg->root_scope, c); }
 
+struct keyword;
+struct symbol *cf_symbol_from_keyword(const struct keyword *kw);
+
 struct symbol *cf_get_symbol(const byte *c);
 struct symbol *cf_default_name(char *template, int *counter);
 struct symbol *cf_localize_symbol(struct symbol *sym);