genksyms: Add helpers for building string lists
Signed-off-by: Michal Marek <mmarek@suse.cz>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
index 2a1a3b8..d17b7a2 100644
--- a/scripts/genksyms/genksyms.c
+++ b/scripts/genksyms/genksyms.c
@@ -66,6 +66,8 @@
static int equal_list(struct string_list *a, struct string_list *b);
static void print_list(FILE * f, struct string_list *list);
+static struct string_list *concat_list(struct string_list *start, ...);
+static struct string_list *mk_node(const char *string);
static void print_location(void);
static void print_type_name(enum symbol_type type, const char *name);
@@ -299,6 +301,35 @@
}
}
+static struct string_list *mk_node(const char *string)
+{
+ struct string_list *newnode;
+
+ newnode = xmalloc(sizeof(*newnode));
+ newnode->string = xstrdup(string);
+ newnode->tag = SYM_NORMAL;
+ newnode->next = NULL;
+
+ return newnode;
+}
+
+static struct string_list *concat_list(struct string_list *start, ...)
+{
+ va_list ap;
+ struct string_list *n, *n2;
+
+ if (!start)
+ return NULL;
+ for (va_start(ap, start); (n = va_arg(ap, struct string_list *));) {
+ for (n2 = n; n2->next; n2 = n2->next)
+ ;
+ n2->next = start;
+ start = n;
+ }
+ va_end(ap);
+ return start;
+}
+
struct string_list *copy_node(struct string_list *node)
{
struct string_list *newnode;
@@ -499,42 +530,17 @@
case SYM_ENUM:
subsym = find_symbol(cur->string, cur->tag);
if (!subsym) {
- struct string_list *n, *t = NULL;
+ struct string_list *n;
error_with_pos("expand undefined %s %s",
symbol_types[cur->tag].name,
cur->string);
-
- n = xmalloc(sizeof(*n));
- n->string = xstrdup(symbol_types[cur->tag].name);
- n->tag = SYM_NORMAL;
- n->next = t;
- t = n;
-
- n = xmalloc(sizeof(*n));
- n->string = xstrdup(cur->string);
- n->tag = SYM_NORMAL;
- n->next = t;
- t = n;
-
- n = xmalloc(sizeof(*n));
- n->string = xstrdup("{");
- n->tag = SYM_NORMAL;
- n->next = t;
- t = n;
-
- n = xmalloc(sizeof(*n));
- n->string = xstrdup("UNKNOWN");
- n->tag = SYM_NORMAL;
- n->next = t;
- t = n;
-
- n = xmalloc(sizeof(*n));
- n->string = xstrdup("}");
- n->tag = SYM_NORMAL;
- n->next = t;
- t = n;
-
+ n = concat_list(mk_node
+ (symbol_types[cur->tag].name),
+ mk_node(cur->string),
+ mk_node("{"),
+ mk_node("UNKNOWN"),
+ mk_node("}"), NULL);
subsym =
add_symbol(cur->string, cur->tag, n, 0);
}
