/* V_STRING -> V_TREE -> V_TREE */
static struct value *tree_rm_glue(struct info *info,
struct value *path,
struct value *tree) {
// FIXME: This only works if TREE is not referenced more than once;
// otherwise we'll have some pretty weird semantics, and would really
// need to copy TREE first
assert(path->tag == V_STRING);
assert(tree->tag == V_TREE);
struct pathx *p = NULL;
struct value *result = NULL;
if (pathx_parse(tree->origin, NULL, path->string->str, true, NULL, &p)
!= PATHX_NOERROR) {
result = make_pathx_exn(ref(info), p);
goto done;
}
if (tree_rm(p) == -1) {
result = make_exn_value(ref(info), "Tree rm of %s failed",
path->string->str);
goto done;
}
result = ref(tree);
done:
free_pathx(p);
return result;
}
static struct value *pathx_parse_glue(struct info *info, struct value *tree,
struct value *path, struct pathx **p) {
assert(path->tag == V_STRING);
assert(tree->tag == V_TREE);
if (pathx_parse(tree->origin, info->error, path->string->str, true,
NULL, NULL, p) != PATHX_NOERROR) {
return make_pathx_exn(ref(info), *p);
} else {
return NULL;
}
}
/* V_STRING -> V_STRING -> V_TREE -> V_TREE */
static struct value *tree_set_glue(struct info *info, struct value *path,
struct value *val, struct value *tree) {
// FIXME: This only works if TREE is not referenced more than once;
// otherwise we'll have some pretty weird semantics, and would really
// need to copy TREE first
assert(path->tag == V_STRING);
assert(val->tag == V_STRING);
assert(tree->tag == V_TREE);
struct tree *fake = NULL;
struct pathx *p = NULL;
struct value *result = NULL;
if (tree->origin->children == NULL) {
tree->origin->children = make_tree(NULL, NULL, tree->origin, NULL);
fake = tree->origin->children;
}
if (pathx_parse(tree->origin, NULL, path->string->str, true, NULL, &p)
!= PATHX_NOERROR) {
result = make_pathx_exn(ref(info), p);
goto done;
}
if (tree_set(p, val->string->str) == NULL) {
result = make_exn_value(ref(info),
"Tree set of %s to '%s' failed",
path->string->str, val->string->str);
goto done;
}
if (fake != NULL) {
list_remove(fake, tree->origin->children);
free_tree(fake);
}
result = ref(tree);
done:
free_pathx(p);
return result;
}
