Allow ** syntax to be used for calling methods that do not accept keywords

Treat the ** syntax as passing a copy of the hash as the last
positional argument.  If the hash being double splatted is empty, do
not add a positional argument.

Remove rb_no_keyword_hash, no longer needed.
This commit is contained in:
Jeremy Evans 2019-04-01 12:15:01 -07:00
Родитель 16c6984bb9
Коммит 334b41a46b
4 изменённых файлов: 19 добавлений и 65 удалений

8
hash.c
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@ -30,8 +30,6 @@
# endif
#endif
VALUE rb_no_keyword_hash;
#ifndef HASH_DEBUG
#define HASH_DEBUG 0
#endif
@ -3276,8 +3274,6 @@ inspect_hash(VALUE hash, VALUE dummy, int recur)
static VALUE
rb_hash_inspect(VALUE hash)
{
if (hash == rb_no_keyword_hash)
return rb_usascii_str_new2("{(NO KEYWORD)}");
if (RHASH_EMPTY_P(hash))
return rb_usascii_str_new2("{}");
return rb_exec_recursive(inspect_hash, hash, 0);
@ -6277,10 +6273,6 @@ Init_Hash(void)
*/
rb_define_global_const("ENV", envtbl);
rb_no_keyword_hash = rb_hash_new();
rb_hash_freeze(rb_no_keyword_hash);
rb_gc_register_mark_object(rb_no_keyword_hash);
/* for callcc */
ruby_register_rollback_func_for_ensure(hash_foreach_ensure, hash_foreach_ensure_rollback);

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@ -2397,7 +2397,6 @@ VALUE rb_str_normalize_ospath(const char *ptr, long len);
/* hash.c (export) */
VALUE rb_hash_delete_entry(VALUE hash, VALUE key);
VALUE rb_ident_hash_new(void);
extern VALUE rb_no_keyword_hash;
/* io.c (export) */
void rb_maygvl_fd_fix_cloexec(int fd);

5
vm.c
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@ -2779,9 +2779,6 @@ static VALUE core_hash_merge_kwd(VALUE hash, VALUE kw);
static VALUE
core_hash_merge(VALUE hash, long argc, const VALUE *argv)
{
if (hash == rb_no_keyword_hash) {
hash = rb_hash_new();
}
Check_Type(hash, T_HASH);
VM_ASSERT(argc % 2 == 0);
rb_hash_bulk_insert(argc, argv, hash);
@ -2815,8 +2812,6 @@ m_core_hash_merge_kwd(VALUE recv, VALUE hash, VALUE kw)
static VALUE
core_hash_merge_kwd(VALUE hash, VALUE kw)
{
if (RHASH_EMPTY_P(hash) && kw == rb_no_keyword_hash)
return rb_no_keyword_hash;
rb_hash_foreach(rb_to_hash_type(kw), kwmerge_i, hash);
return hash;
}

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@ -186,11 +186,6 @@ args_rest_array(struct args_info *args)
static int
keyword_hash_p(VALUE *kw_hash_ptr, VALUE *rest_hash_ptr)
{
if (*kw_hash_ptr == rb_no_keyword_hash) {
*kw_hash_ptr = Qnil;
*rest_hash_ptr = Qfalse;
return TRUE;
}
*rest_hash_ptr = rb_check_hash_type(*kw_hash_ptr);
if (!NIL_P(*rest_hash_ptr)) {
@ -487,7 +482,7 @@ args_setup_kw_parameters(rb_execution_context_t *const ec, const rb_iseq_t *cons
static inline void
args_setup_kw_rest_parameter(VALUE keyword_hash, VALUE *locals)
{
locals[0] = NIL_P(keyword_hash) ? rb_no_keyword_hash : rb_hash_dup(keyword_hash);
locals[0] = NIL_P(keyword_hash) ? rb_hash_new() : rb_hash_dup(keyword_hash);
}
static inline void
@ -513,6 +508,20 @@ fill_keys_values(st_data_t key, st_data_t val, st_data_t ptr)
return ST_CONTINUE;
}
static inline int
ignore_keyword_hash_p(VALUE keyword_hash, const rb_iseq_t * const iseq) {
if (!(iseq->body->param.flags.has_kw) &&
!(iseq->body->param.flags.has_kwrest)) {
keyword_hash = rb_check_hash_type(keyword_hash);
if (!NIL_P(keyword_hash) && RHASH_EMPTY_P(keyword_hash)) {
return 1;
}
}
return 0;
}
static inline VALUE
get_loc(struct rb_calling_info *calling, const struct rb_call_info *ci)
{
@ -533,20 +542,6 @@ rb_warn_last_hash_to_keyword(struct rb_calling_info *calling, const struct rb_ca
}
}
static inline void
rb_warn_keyword_to_last_hash(struct rb_calling_info *calling, const struct rb_call_info *ci)
{
if (calling->recv == Qundef) return;
VALUE loc = get_loc(calling, ci);
if (NIL_P(loc)) {
rb_warn("The keyword argument for `%s' is used as the last parameter", rb_id2name(ci->mid));
}
else {
rb_warn("The keyword argument for `%s' (defined at %s:%d) is used as the last parameter",
rb_id2name(ci->mid), RSTRING_PTR(RARRAY_AREF(loc, 0)), FIX2INT(RARRAY_AREF(loc, 1)));
}
}
static int
setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * const iseq,
struct rb_calling_info *const calling,
@ -563,7 +558,6 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
VALUE keyword_hash = Qnil;
VALUE * const orig_sp = ec->cfp->sp;
unsigned int i;
int k2n_warned = FALSE;
vm_check_canary(ec, orig_sp);
/*
@ -619,7 +613,7 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
given_argc += RARRAY_LENINT(args->rest) - 1;
if (kw_flag & VM_CALL_KW_SPLAT) {
int len = RARRAY_LENINT(args->rest);
if (len > 0 && RARRAY_AREF(args->rest, len - 1) == rb_no_keyword_hash) {
if (len > 0 && ignore_keyword_hash_p(RARRAY_AREF(args->rest, len - 1), iseq)) {
arg_rest_dup(args);
rb_ary_pop(args->rest);
given_argc--;
@ -629,7 +623,7 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
}
else {
if (kw_flag & VM_CALL_KW_SPLAT) {
if (args->argv[args->argc-1] == rb_no_keyword_hash) {
if (ignore_keyword_hash_p(args->argv[args->argc-1], iseq)) {
args->argc--;
given_argc--;
kw_flag &= ~VM_CALL_KW_SPLAT;
@ -655,12 +649,6 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
/* argc check */
if (given_argc < min_argc) {
if (given_argc == min_argc - 1 && args->kw_argv) {
/* Warn the following:
* def foo(a, k:1) p [a, k] end
* foo(k:42) #=> [{:k=>42}, 1]
*/
rb_warn_keyword_to_last_hash(calling, ci);
k2n_warned = TRUE;
args_stored_kw_argv_to_hash(args);
given_argc = args_argc(args);
}
@ -702,16 +690,6 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
}
}
}
else if (!k2n_warned &&
!((kw_flag & VM_CALL_KWARG) && iseq->body->param.flags.has_kw) &&
given_argc > min_argc &&
(kw_flag & (VM_CALL_KWARG | VM_CALL_KW_SPLAT))) {
/* Warn the following:
* def foo(x, opt=1) p [x]; end
* foo(k:42) #=> [{:k=>42}]
*/
rb_warn_keyword_to_last_hash(calling, ci);
}
if (given_argc > max_argc && max_argc != UNLIMITED_ARGUMENTS) {
if (arg_setup_type == arg_setup_block) {
@ -880,8 +858,6 @@ vm_caller_setup_arg_splat(rb_control_frame_t *cfp, struct rb_calling_info *calli
CHECK_VM_STACK_OVERFLOW(cfp, len);
if (ptr[len - 1] == rb_no_keyword_hash) len--;
for (i = 0; i < len; i++) {
*cfp->sp++ = ptr[i];
}
@ -899,14 +875,6 @@ vm_caller_setup_arg_kw(rb_control_frame_t *cfp, struct rb_calling_info *calling,
VALUE *sp = cfp->sp;
int i;
/* Warn the following:
* def foo(x) p [x] end
* foo(k:42) #=> [{:k=>42}]
*/
if (!cfunc) {
rb_warn_keyword_to_last_hash(calling, ci);
}
for (i=0; i<kw_len; i++) {
rb_hash_aset(h, passed_keywords[i], (sp - kw_len)[i]);
}