mirror of
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synced 2025-08-24 05:25:34 +02:00
0f90a24a81
Ruby makes it easy to delegate all arguments from one method to another:
```ruby
def f(*args, **kw)
g(*args, **kw)
end
```
Unfortunately, this indirection decreases performance. One reason it
decreases performance is that this allocates an array and a hash per
call to `f`, even if `args` and `kw` are not modified.
Due to Ruby's ability to modify almost anything at runtime, it's
difficult to avoid the array allocation in the general case. For
example, it's not safe to avoid the allocation in a case like this:
```ruby
def f(*args, **kw)
foo(bar)
g(*args, **kw)
end
```
Because `foo` may be `eval` and `bar` may be a string referencing `args`
or `kw`.
To fix this correctly, you need to perform something similar to escape
analysis on the variables. However, there is a case where you can
avoid the allocation without doing escape analysis, and that is when
the splat variables are anonymous:
```ruby
def f(*, **)
g(*, **)
end
```
When splat variables are anonymous, it is not possible to reference
them directly, it is only possible to use them as splats to other
methods. Since that is the case, if `f` is called with a regular
splat and a keyword splat, it can pass the arguments directly to
`g` without copying them, avoiding allocation. For example:
```ruby
def g(a, b:)
a + b
end
def f(*, **)
g(*, **)
end
a = [1]
kw = {b: 2}
f(*a, **kw)
```
I call this technique: Allocationless Anonymous Splat Forwarding.
This is implemented using a couple additional iseq param flags,
anon_rest and anon_kwrest. If anon_rest is set, and an array splat
is passed when calling the method when the array splat can be used
without modification, `setup_parameters_complex` does not duplicate
it. Similarly, if anon_kwest is set, and a keyword splat is passed
when calling the method, `setup_parameters_complex` does not
duplicate it.
958 lines
30 KiB
C
958 lines
30 KiB
C
/**********************************************************************
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vm_args.c - process method call arguments.
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$Author$
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Copyright (C) 2014- Yukihiro Matsumoto
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**********************************************************************/
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NORETURN(static void raise_argument_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const VALUE exc));
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NORETURN(static void argument_arity_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc));
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NORETURN(static void argument_kw_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const char *error, const VALUE keys));
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VALUE rb_keyword_error_new(const char *error, VALUE keys); /* class.c */
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static VALUE method_missing(rb_execution_context_t *ec, VALUE obj, ID id, int argc, const VALUE *argv,
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enum method_missing_reason call_status, int kw_splat);
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const rb_callable_method_entry_t *rb_resolve_refined_method_callable(VALUE refinements, const rb_callable_method_entry_t *me);
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struct args_info {
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/* basic args info */
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VALUE *argv;
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int argc;
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/* additional args info */
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int rest_index;
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int rest_dupped;
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const struct rb_callinfo_kwarg *kw_arg;
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VALUE *kw_argv;
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VALUE rest;
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};
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enum arg_setup_type {
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arg_setup_method,
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arg_setup_block
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};
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static inline void
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arg_rest_dup(struct args_info *args)
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{
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if (!args->rest_dupped) {
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args->rest = rb_ary_dup(args->rest);
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args->rest_dupped = TRUE;
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}
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}
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static inline int
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args_argc(struct args_info *args)
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{
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if (args->rest == Qfalse) {
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return args->argc;
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}
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else {
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return args->argc + RARRAY_LENINT(args->rest) - args->rest_index;
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}
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}
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static inline void
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args_extend(struct args_info *args, const int min_argc)
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{
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int i;
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if (args->rest) {
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arg_rest_dup(args);
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VM_ASSERT(args->rest_index == 0);
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for (i=args->argc + RARRAY_LENINT(args->rest); i<min_argc; i++) {
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rb_ary_push(args->rest, Qnil);
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}
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}
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else {
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for (i=args->argc; i<min_argc; i++) {
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args->argv[args->argc++] = Qnil;
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}
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}
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}
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static inline void
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args_reduce(struct args_info *args, int over_argc)
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{
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if (args->rest) {
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const long len = RARRAY_LEN(args->rest);
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if (len > over_argc) {
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arg_rest_dup(args);
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rb_ary_resize(args->rest, len - over_argc);
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return;
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}
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else {
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args->rest = Qfalse;
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over_argc -= len;
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}
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}
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VM_ASSERT(args->argc >= over_argc);
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args->argc -= over_argc;
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}
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static inline int
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args_check_block_arg0(struct args_info *args)
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{
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VALUE ary = Qnil;
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if (args->rest && RARRAY_LEN(args->rest) == 1) {
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VALUE arg0 = RARRAY_AREF(args->rest, 0);
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ary = rb_check_array_type(arg0);
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}
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else if (args->argc == 1) {
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VALUE arg0 = args->argv[0];
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ary = rb_check_array_type(arg0);
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args->argv[0] = arg0; /* see: https://bugs.ruby-lang.org/issues/8484 */
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}
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if (!NIL_P(ary)) {
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args->rest = ary;
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args->rest_index = 0;
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args->argc = 0;
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return TRUE;
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}
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return FALSE;
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}
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static inline void
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args_copy(struct args_info *args)
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{
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if (args->rest != Qfalse) {
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int argc = args->argc;
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args->argc = 0;
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arg_rest_dup(args);
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/*
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* argv: [m0, m1, m2, m3]
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* rest: [a0, a1, a2, a3, a4, a5]
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* ^
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* rest_index
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*
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* #=> first loop
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*
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* argv: [m0, m1]
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* rest: [m2, m3, a2, a3, a4, a5]
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* ^
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* rest_index
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*
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* #=> 2nd loop
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*
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* argv: [] (argc == 0)
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* rest: [m0, m1, m2, m3, a2, a3, a4, a5]
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* ^
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* rest_index
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*/
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while (args->rest_index > 0 && argc > 0) {
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RARRAY_ASET(args->rest, --args->rest_index, args->argv[--argc]);
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}
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while (argc > 0) {
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rb_ary_unshift(args->rest, args->argv[--argc]);
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}
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}
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else if (args->argc > 0) {
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args->rest = rb_ary_new_from_values(args->argc, args->argv);
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args->rest_index = 0;
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args->rest_dupped = TRUE;
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args->argc = 0;
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}
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}
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static inline const VALUE *
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args_rest_argv(struct args_info *args)
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{
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return RARRAY_CONST_PTR(args->rest) + args->rest_index;
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}
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static inline VALUE
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args_rest_array(struct args_info *args)
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{
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VALUE ary;
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if (args->rest) {
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ary = rb_ary_behead(args->rest, args->rest_index);
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args->rest_index = 0;
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args->rest = 0;
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}
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else {
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ary = rb_ary_new();
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}
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return ary;
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}
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static int
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args_kw_argv_to_hash(struct args_info *args)
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{
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const struct rb_callinfo_kwarg *kw_arg = args->kw_arg;
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const VALUE *const passed_keywords = kw_arg->keywords;
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const int kw_len = kw_arg->keyword_len;
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VALUE h = rb_hash_new_with_size(kw_len);
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const int kw_start = args->argc - kw_len;
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const VALUE * const kw_argv = args->argv + kw_start;
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int i;
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args->argc = kw_start + 1;
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for (i=0; i<kw_len; i++) {
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rb_hash_aset(h, passed_keywords[i], kw_argv[i]);
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}
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args->argv[args->argc - 1] = h;
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return args->argc;
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}
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static inline void
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args_setup_lead_parameters(struct args_info *args, int argc, VALUE *locals)
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{
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if (args->argc >= argc) {
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/* do noting */
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args->argc -= argc;
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args->argv += argc;
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}
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else {
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int i, j;
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const VALUE *argv = args_rest_argv(args);
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for (i=args->argc, j=0; i<argc; i++, j++) {
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locals[i] = argv[j];
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}
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args->rest_index += argc - args->argc;
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args->argc = 0;
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}
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}
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static inline void
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args_setup_post_parameters(struct args_info *args, int argc, VALUE *locals)
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{
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long len;
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len = RARRAY_LEN(args->rest);
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MEMCPY(locals, RARRAY_CONST_PTR(args->rest) + len - argc, VALUE, argc);
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rb_ary_resize(args->rest, len - argc);
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}
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static inline int
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args_setup_opt_parameters(struct args_info *args, int opt_max, VALUE *locals)
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{
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int i;
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if (args->argc >= opt_max) {
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args->argc -= opt_max;
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args->argv += opt_max;
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i = opt_max;
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}
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else {
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int j;
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i = args->argc;
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args->argc = 0;
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if (args->rest) {
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int len = RARRAY_LENINT(args->rest);
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const VALUE *argv = RARRAY_CONST_PTR(args->rest);
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for (; i<opt_max && args->rest_index < len; i++, args->rest_index++) {
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locals[i] = argv[args->rest_index];
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}
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}
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/* initialize by nil */
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for (j=i; j<opt_max; j++) {
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locals[j] = Qnil;
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}
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}
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return i;
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}
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static inline void
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args_setup_rest_parameter(struct args_info *args, VALUE *locals)
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{
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*locals = args_rest_array(args);
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}
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static VALUE
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make_unknown_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv)
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{
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int i;
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VALUE obj = rb_ary_hidden_new(1);
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for (i=0; i<passed_keyword_len; i++) {
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if (!UNDEF_P(kw_argv[i])) {
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rb_ary_push(obj, passed_keywords[i]);
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}
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}
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return obj;
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}
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static VALUE
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make_rest_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv)
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{
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int i;
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VALUE obj = rb_hash_new_with_size(passed_keyword_len);
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for (i=0; i<passed_keyword_len; i++) {
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if (!UNDEF_P(kw_argv[i])) {
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rb_hash_aset(obj, passed_keywords[i], kw_argv[i]);
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}
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}
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return obj;
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}
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static inline int
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args_setup_kw_parameters_lookup(const ID key, VALUE *ptr, const VALUE *const passed_keywords, VALUE *passed_values, const int passed_keyword_len)
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{
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int i;
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const VALUE keyname = ID2SYM(key);
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for (i=0; i<passed_keyword_len; i++) {
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if (keyname == passed_keywords[i]) {
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*ptr = passed_values[i];
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passed_values[i] = Qundef;
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return TRUE;
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}
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}
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return FALSE;
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}
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#define KW_SPECIFIED_BITS_MAX (32-1) /* TODO: 32 -> Fixnum's max bits */
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static void
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args_setup_kw_parameters(rb_execution_context_t *const ec, const rb_iseq_t *const iseq,
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VALUE *const passed_values, const int passed_keyword_len, const VALUE *const passed_keywords,
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VALUE *const locals)
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{
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const ID *acceptable_keywords = ISEQ_BODY(iseq)->param.keyword->table;
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const int req_key_num = ISEQ_BODY(iseq)->param.keyword->required_num;
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const int key_num = ISEQ_BODY(iseq)->param.keyword->num;
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const VALUE * const default_values = ISEQ_BODY(iseq)->param.keyword->default_values;
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VALUE missing = 0;
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int i, di, found = 0;
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int unspecified_bits = 0;
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VALUE unspecified_bits_value = Qnil;
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for (i=0; i<req_key_num; i++) {
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ID key = acceptable_keywords[i];
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if (args_setup_kw_parameters_lookup(key, &locals[i], passed_keywords, passed_values, passed_keyword_len)) {
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found++;
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}
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else {
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if (!missing) missing = rb_ary_hidden_new(1);
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rb_ary_push(missing, ID2SYM(key));
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}
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}
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if (missing) argument_kw_error(ec, iseq, "missing", missing);
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for (di=0; i<key_num; i++, di++) {
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if (args_setup_kw_parameters_lookup(acceptable_keywords[i], &locals[i], passed_keywords, passed_values, passed_keyword_len)) {
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found++;
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}
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else {
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if (UNDEF_P(default_values[di])) {
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locals[i] = Qnil;
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if (LIKELY(i < KW_SPECIFIED_BITS_MAX)) {
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unspecified_bits |= 0x01 << di;
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}
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else {
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if (NIL_P(unspecified_bits_value)) {
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/* fixnum -> hash */
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int j;
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unspecified_bits_value = rb_hash_new();
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for (j=0; j<KW_SPECIFIED_BITS_MAX; j++) {
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if (unspecified_bits & (0x01 << j)) {
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rb_hash_aset(unspecified_bits_value, INT2FIX(j), Qtrue);
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}
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}
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}
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rb_hash_aset(unspecified_bits_value, INT2FIX(di), Qtrue);
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}
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}
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else {
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locals[i] = default_values[di];
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}
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}
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}
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if (ISEQ_BODY(iseq)->param.flags.has_kwrest) {
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const int rest_hash_index = key_num + 1;
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locals[rest_hash_index] = make_rest_kw_hash(passed_keywords, passed_keyword_len, passed_values);
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}
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else {
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if (found != passed_keyword_len) {
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VALUE keys = make_unknown_kw_hash(passed_keywords, passed_keyword_len, passed_values);
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argument_kw_error(ec, iseq, "unknown", keys);
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}
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}
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if (NIL_P(unspecified_bits_value)) {
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unspecified_bits_value = INT2FIX(unspecified_bits);
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}
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locals[key_num] = unspecified_bits_value;
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}
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static inline void
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args_setup_kw_rest_parameter(VALUE keyword_hash, VALUE *locals, int kw_flag)
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{
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if (NIL_P(keyword_hash)) {
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keyword_hash = rb_hash_new();
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}
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else if (!(kw_flag & VM_CALL_KW_SPLAT_MUT)) {
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keyword_hash = rb_hash_dup(keyword_hash);
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}
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locals[0] = keyword_hash;
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}
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static inline void
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args_setup_block_parameter(const rb_execution_context_t *ec, struct rb_calling_info *calling, VALUE *locals)
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{
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VALUE block_handler = calling->block_handler;
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*locals = rb_vm_bh_to_procval(ec, block_handler);
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}
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struct fill_values_arg {
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VALUE *keys;
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VALUE *vals;
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int argc;
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};
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static int
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fill_keys_values(st_data_t key, st_data_t val, st_data_t ptr)
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{
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struct fill_values_arg *arg = (struct fill_values_arg *)ptr;
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int i = arg->argc++;
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arg->keys[i] = (VALUE)key;
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arg->vals[i] = (VALUE)val;
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return ST_CONTINUE;
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}
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static inline int
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ignore_keyword_hash_p(VALUE keyword_hash, const rb_iseq_t * const iseq, unsigned int * kw_flag, VALUE * converted_keyword_hash)
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{
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if (keyword_hash == Qnil) {
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return 1;
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}
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if (!RB_TYPE_P(keyword_hash, T_HASH)) {
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keyword_hash = rb_to_hash_type(keyword_hash);
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}
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if (!(*kw_flag & VM_CALL_KW_SPLAT_MUT) &&
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(ISEQ_BODY(iseq)->param.flags.has_kwrest ||
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ISEQ_BODY(iseq)->param.flags.ruby2_keywords)) {
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*kw_flag |= VM_CALL_KW_SPLAT_MUT;
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keyword_hash = rb_hash_dup(keyword_hash);
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}
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*converted_keyword_hash = keyword_hash;
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return !(ISEQ_BODY(iseq)->param.flags.has_kw) &&
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!(ISEQ_BODY(iseq)->param.flags.has_kwrest) &&
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RHASH_EMPTY_P(keyword_hash);
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}
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static VALUE
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check_kwrestarg(VALUE keyword_hash, unsigned int *kw_flag)
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{
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if (!(*kw_flag & VM_CALL_KW_SPLAT_MUT)) {
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*kw_flag |= VM_CALL_KW_SPLAT_MUT;
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return rb_hash_dup(keyword_hash);
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}
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else {
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return keyword_hash;
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}
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}
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static int
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setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * const iseq,
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struct rb_calling_info *const calling,
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const struct rb_callinfo *ci,
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VALUE * const locals, const enum arg_setup_type arg_setup_type)
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{
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const int min_argc = ISEQ_BODY(iseq)->param.lead_num + ISEQ_BODY(iseq)->param.post_num;
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const int max_argc = (ISEQ_BODY(iseq)->param.flags.has_rest == FALSE) ? min_argc + ISEQ_BODY(iseq)->param.opt_num : UNLIMITED_ARGUMENTS;
|
|
int given_argc;
|
|
unsigned int ci_flag = vm_ci_flag(ci);
|
|
unsigned int kw_flag = ci_flag & (VM_CALL_KWARG | VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
|
|
int opt_pc = 0, allow_autosplat = !kw_flag;
|
|
struct args_info args_body, *args;
|
|
VALUE keyword_hash = Qnil;
|
|
VALUE * const orig_sp = ec->cfp->sp;
|
|
unsigned int i;
|
|
VALUE flag_keyword_hash = 0;
|
|
VALUE splat_flagged_keyword_hash = 0;
|
|
VALUE converted_keyword_hash = 0;
|
|
VALUE rest_last = 0;
|
|
|
|
vm_check_canary(ec, orig_sp);
|
|
/*
|
|
* Extend SP for GC.
|
|
*
|
|
* [pushed values] [uninitialized values]
|
|
* <- ci->argc -->
|
|
* <- ISEQ_BODY(iseq)->param.size------------>
|
|
* ^ locals ^ sp
|
|
*
|
|
* =>
|
|
* [pushed values] [initialized values ]
|
|
* <- ci->argc -->
|
|
* <- ISEQ_BODY(iseq)->param.size------------>
|
|
* ^ locals ^ sp
|
|
*/
|
|
for (i=calling->argc; i<ISEQ_BODY(iseq)->param.size; i++) {
|
|
locals[i] = Qnil;
|
|
}
|
|
ec->cfp->sp = &locals[i];
|
|
|
|
/* setup args */
|
|
args = &args_body;
|
|
given_argc = args->argc = calling->argc;
|
|
args->argv = locals;
|
|
args->rest_dupped = ci_flag & VM_CALL_ARGS_SPLAT_MUT;
|
|
|
|
if (UNLIKELY(ISEQ_BODY(iseq)->param.flags.anon_rest)) {
|
|
if ((ci_flag & VM_CALL_ARGS_SPLAT) &&
|
|
given_argc == ISEQ_BODY(iseq)->param.lead_num + (kw_flag ? 2 : 1) &&
|
|
!ISEQ_BODY(iseq)->param.flags.has_opt &&
|
|
!ISEQ_BODY(iseq)->param.flags.has_post &&
|
|
(!kw_flag ||
|
|
!ISEQ_BODY(iseq)->param.flags.has_kw ||
|
|
!ISEQ_BODY(iseq)->param.flags.has_kwrest ||
|
|
!ISEQ_BODY(iseq)->param.flags.accepts_no_kwarg)) {
|
|
args->rest_dupped = true;
|
|
}
|
|
}
|
|
|
|
if (UNLIKELY(ISEQ_BODY(iseq)->param.flags.anon_kwrest)) {
|
|
if (kw_flag & VM_CALL_KW_SPLAT) {
|
|
kw_flag |= VM_CALL_KW_SPLAT_MUT;
|
|
}
|
|
}
|
|
|
|
if (kw_flag & VM_CALL_KWARG) {
|
|
args->kw_arg = vm_ci_kwarg(ci);
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_kw) {
|
|
int kw_len = args->kw_arg->keyword_len;
|
|
/* copy kw_argv */
|
|
args->kw_argv = ALLOCA_N(VALUE, kw_len);
|
|
args->argc -= kw_len;
|
|
given_argc -= kw_len;
|
|
MEMCPY(args->kw_argv, locals + args->argc, VALUE, kw_len);
|
|
}
|
|
else {
|
|
args->kw_argv = NULL;
|
|
given_argc = args_kw_argv_to_hash(args);
|
|
kw_flag |= VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT;
|
|
}
|
|
}
|
|
else {
|
|
args->kw_arg = NULL;
|
|
args->kw_argv = NULL;
|
|
}
|
|
|
|
if ((ci_flag & VM_CALL_ARGS_SPLAT) && (ci_flag & VM_CALL_KW_SPLAT)) {
|
|
// f(*a, **kw)
|
|
args->rest_index = 0;
|
|
keyword_hash = locals[--args->argc];
|
|
args->rest = locals[--args->argc];
|
|
|
|
if (ignore_keyword_hash_p(keyword_hash, iseq, &kw_flag, &converted_keyword_hash)) {
|
|
keyword_hash = Qnil;
|
|
}
|
|
else if (UNLIKELY(ISEQ_BODY(iseq)->param.flags.ruby2_keywords)) {
|
|
converted_keyword_hash = check_kwrestarg(converted_keyword_hash, &kw_flag);
|
|
flag_keyword_hash = converted_keyword_hash;
|
|
arg_rest_dup(args);
|
|
rb_ary_push(args->rest, converted_keyword_hash);
|
|
keyword_hash = Qnil;
|
|
}
|
|
else if (!ISEQ_BODY(iseq)->param.flags.has_kwrest && !ISEQ_BODY(iseq)->param.flags.has_kw) {
|
|
converted_keyword_hash = check_kwrestarg(converted_keyword_hash, &kw_flag);
|
|
arg_rest_dup(args);
|
|
rb_ary_push(args->rest, converted_keyword_hash);
|
|
keyword_hash = Qnil;
|
|
}
|
|
else {
|
|
keyword_hash = converted_keyword_hash;
|
|
}
|
|
|
|
int len = RARRAY_LENINT(args->rest);
|
|
given_argc += len - 2;
|
|
}
|
|
else if (ci_flag & VM_CALL_ARGS_SPLAT) {
|
|
// f(*a)
|
|
args->rest_index = 0;
|
|
args->rest = locals[--args->argc];
|
|
int len = RARRAY_LENINT(args->rest);
|
|
given_argc += len - 1;
|
|
|
|
if (!kw_flag && len > 0) {
|
|
rest_last = RARRAY_AREF(args->rest, len - 1);
|
|
if (RB_TYPE_P(rest_last, T_HASH) && FL_TEST_RAW(rest_last, RHASH_PASS_AS_KEYWORDS)) {
|
|
// def f(**kw); a = [..., kw]; g(*a)
|
|
splat_flagged_keyword_hash = rest_last;
|
|
rest_last = rb_hash_dup(rest_last);
|
|
kw_flag |= VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT;
|
|
|
|
if (ignore_keyword_hash_p(rest_last, iseq, &kw_flag, &converted_keyword_hash)) {
|
|
arg_rest_dup(args);
|
|
rb_ary_pop(args->rest);
|
|
given_argc--;
|
|
kw_flag &= ~(VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
|
|
}
|
|
else {
|
|
if (rest_last != converted_keyword_hash) {
|
|
rest_last = converted_keyword_hash;
|
|
arg_rest_dup(args);
|
|
RARRAY_ASET(args->rest, len - 1, rest_last);
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.ruby2_keywords && rest_last) {
|
|
flag_keyword_hash = rest_last;
|
|
}
|
|
else if (ISEQ_BODY(iseq)->param.flags.has_kw || ISEQ_BODY(iseq)->param.flags.has_kwrest) {
|
|
arg_rest_dup(args);
|
|
rb_ary_pop(args->rest);
|
|
given_argc--;
|
|
keyword_hash = rest_last;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
args->rest = Qfalse;
|
|
|
|
if (args->argc > 0 && (kw_flag & VM_CALL_KW_SPLAT)) {
|
|
// f(**kw)
|
|
VALUE last_arg = args->argv[args->argc-1];
|
|
if (ignore_keyword_hash_p(last_arg, iseq, &kw_flag, &converted_keyword_hash)) {
|
|
args->argc--;
|
|
given_argc--;
|
|
kw_flag &= ~(VM_CALL_KW_SPLAT | VM_CALL_KW_SPLAT_MUT);
|
|
}
|
|
else {
|
|
if (!(kw_flag & VM_CALL_KW_SPLAT_MUT)) {
|
|
converted_keyword_hash = rb_hash_dup(converted_keyword_hash);
|
|
}
|
|
|
|
if (last_arg != converted_keyword_hash) {
|
|
last_arg = converted_keyword_hash;
|
|
args->argv[args->argc-1] = last_arg;
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.ruby2_keywords) {
|
|
flag_keyword_hash = last_arg;
|
|
}
|
|
else if (ISEQ_BODY(iseq)->param.flags.has_kw || ISEQ_BODY(iseq)->param.flags.has_kwrest) {
|
|
args->argc--;
|
|
given_argc--;
|
|
keyword_hash = last_arg;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (flag_keyword_hash) {
|
|
FL_SET_RAW(flag_keyword_hash, RHASH_PASS_AS_KEYWORDS);
|
|
}
|
|
|
|
if (kw_flag && ISEQ_BODY(iseq)->param.flags.accepts_no_kwarg) {
|
|
rb_raise(rb_eArgError, "no keywords accepted");
|
|
}
|
|
|
|
switch (arg_setup_type) {
|
|
case arg_setup_method:
|
|
break; /* do nothing special */
|
|
case arg_setup_block:
|
|
if (given_argc == 1 &&
|
|
allow_autosplat &&
|
|
!splat_flagged_keyword_hash &&
|
|
(min_argc > 0 || ISEQ_BODY(iseq)->param.opt_num > 1) &&
|
|
!ISEQ_BODY(iseq)->param.flags.ambiguous_param0 &&
|
|
!((ISEQ_BODY(iseq)->param.flags.has_kw ||
|
|
ISEQ_BODY(iseq)->param.flags.has_kwrest)
|
|
&& max_argc == 1) &&
|
|
args_check_block_arg0(args)) {
|
|
given_argc = RARRAY_LENINT(args->rest);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* argc check */
|
|
if (given_argc < min_argc) {
|
|
if (arg_setup_type == arg_setup_block) {
|
|
CHECK_VM_STACK_OVERFLOW(ec->cfp, min_argc);
|
|
given_argc = min_argc;
|
|
args_extend(args, min_argc);
|
|
}
|
|
else {
|
|
argument_arity_error(ec, iseq, given_argc, min_argc, max_argc);
|
|
}
|
|
}
|
|
|
|
if (given_argc > max_argc && max_argc != UNLIMITED_ARGUMENTS) {
|
|
if (arg_setup_type == arg_setup_block) {
|
|
/* truncate */
|
|
args_reduce(args, given_argc - max_argc);
|
|
given_argc = max_argc;
|
|
}
|
|
else {
|
|
argument_arity_error(ec, iseq, given_argc, min_argc, max_argc);
|
|
}
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_lead) {
|
|
args_setup_lead_parameters(args, ISEQ_BODY(iseq)->param.lead_num, locals + 0);
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_rest || ISEQ_BODY(iseq)->param.flags.has_post){
|
|
args_copy(args);
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_post) {
|
|
args_setup_post_parameters(args, ISEQ_BODY(iseq)->param.post_num, locals + ISEQ_BODY(iseq)->param.post_start);
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_opt) {
|
|
int opt = args_setup_opt_parameters(args, ISEQ_BODY(iseq)->param.opt_num, locals + ISEQ_BODY(iseq)->param.lead_num);
|
|
opt_pc = (int)ISEQ_BODY(iseq)->param.opt_table[opt];
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_rest) {
|
|
args_setup_rest_parameter(args, locals + ISEQ_BODY(iseq)->param.rest_start);
|
|
VALUE ary = *(locals + ISEQ_BODY(iseq)->param.rest_start);
|
|
VALUE index = RARRAY_LEN(ary) - 1;
|
|
if (splat_flagged_keyword_hash &&
|
|
!ISEQ_BODY(iseq)->param.flags.ruby2_keywords &&
|
|
!ISEQ_BODY(iseq)->param.flags.has_kw &&
|
|
!ISEQ_BODY(iseq)->param.flags.has_kwrest &&
|
|
RARRAY_AREF(ary, index) == splat_flagged_keyword_hash) {
|
|
((struct RHash *)rest_last)->basic.flags &= ~RHASH_PASS_AS_KEYWORDS;
|
|
RARRAY_ASET(ary, index, rest_last);
|
|
}
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_kw) {
|
|
VALUE * const klocals = locals + ISEQ_BODY(iseq)->param.keyword->bits_start - ISEQ_BODY(iseq)->param.keyword->num;
|
|
|
|
if (args->kw_argv != NULL) {
|
|
const struct rb_callinfo_kwarg *kw_arg = args->kw_arg;
|
|
args_setup_kw_parameters(ec, iseq, args->kw_argv, kw_arg->keyword_len, kw_arg->keywords, klocals);
|
|
}
|
|
else if (!NIL_P(keyword_hash)) {
|
|
int kw_len = rb_long2int(RHASH_SIZE(keyword_hash));
|
|
struct fill_values_arg arg;
|
|
/* copy kw_argv */
|
|
arg.keys = args->kw_argv = ALLOCA_N(VALUE, kw_len * 2);
|
|
arg.vals = arg.keys + kw_len;
|
|
arg.argc = 0;
|
|
rb_hash_foreach(keyword_hash, fill_keys_values, (VALUE)&arg);
|
|
VM_ASSERT(arg.argc == kw_len);
|
|
args_setup_kw_parameters(ec, iseq, arg.vals, kw_len, arg.keys, klocals);
|
|
}
|
|
else {
|
|
VM_ASSERT(args_argc(args) == 0);
|
|
args_setup_kw_parameters(ec, iseq, NULL, 0, NULL, klocals);
|
|
}
|
|
}
|
|
else if (ISEQ_BODY(iseq)->param.flags.has_kwrest) {
|
|
args_setup_kw_rest_parameter(keyword_hash, locals + ISEQ_BODY(iseq)->param.keyword->rest_start, kw_flag);
|
|
}
|
|
else if (!NIL_P(keyword_hash) && RHASH_SIZE(keyword_hash) > 0 && arg_setup_type == arg_setup_method) {
|
|
argument_kw_error(ec, iseq, "unknown", rb_hash_keys(keyword_hash));
|
|
}
|
|
|
|
if (ISEQ_BODY(iseq)->param.flags.has_block) {
|
|
if (ISEQ_BODY(iseq)->local_iseq == iseq) {
|
|
/* Do nothing */
|
|
}
|
|
else {
|
|
args_setup_block_parameter(ec, calling, locals + ISEQ_BODY(iseq)->param.block_start);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
{
|
|
int i;
|
|
for (i=0; i<ISEQ_BODY(iseq)->param.size; i++) {
|
|
ruby_debug_printf("local[%d] = %p\n", i, (void *)locals[i]);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ec->cfp->sp = orig_sp;
|
|
return opt_pc;
|
|
}
|
|
|
|
static void
|
|
raise_argument_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const VALUE exc)
|
|
{
|
|
VALUE at;
|
|
|
|
if (iseq) {
|
|
vm_push_frame(ec, iseq, VM_FRAME_MAGIC_DUMMY | VM_ENV_FLAG_LOCAL, Qnil /* self */,
|
|
VM_BLOCK_HANDLER_NONE /* specval*/, Qfalse /* me or cref */,
|
|
ISEQ_BODY(iseq)->iseq_encoded,
|
|
ec->cfp->sp, 0, 0 /* stack_max */);
|
|
at = rb_ec_backtrace_object(ec);
|
|
rb_backtrace_use_iseq_first_lineno_for_last_location(at);
|
|
rb_vm_pop_frame(ec);
|
|
}
|
|
else {
|
|
at = rb_ec_backtrace_object(ec);
|
|
}
|
|
|
|
rb_ivar_set(exc, idBt_locations, at);
|
|
rb_exc_set_backtrace(exc, at);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
static void
|
|
argument_arity_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const int miss_argc, const int min_argc, const int max_argc)
|
|
{
|
|
VALUE exc = rb_arity_error_new(miss_argc, min_argc, max_argc);
|
|
if (ISEQ_BODY(iseq)->param.flags.has_kw) {
|
|
const struct rb_iseq_param_keyword *const kw = ISEQ_BODY(iseq)->param.keyword;
|
|
const ID *keywords = kw->table;
|
|
int req_key_num = kw->required_num;
|
|
if (req_key_num > 0) {
|
|
static const char required[] = "; required keywords";
|
|
VALUE mesg = rb_attr_get(exc, idMesg);
|
|
rb_str_resize(mesg, RSTRING_LEN(mesg)-1);
|
|
rb_str_cat(mesg, required, sizeof(required) - 1 - (req_key_num == 1));
|
|
rb_str_cat_cstr(mesg, ":");
|
|
do {
|
|
rb_str_cat_cstr(mesg, " ");
|
|
rb_str_append(mesg, rb_id2str(*keywords++));
|
|
rb_str_cat_cstr(mesg, ",");
|
|
} while (--req_key_num);
|
|
RSTRING_PTR(mesg)[RSTRING_LEN(mesg)-1] = ')';
|
|
}
|
|
}
|
|
raise_argument_error(ec, iseq, exc);
|
|
}
|
|
|
|
static void
|
|
argument_kw_error(rb_execution_context_t *ec, const rb_iseq_t *iseq, const char *error, const VALUE keys)
|
|
{
|
|
raise_argument_error(ec, iseq, rb_keyword_error_new(error, keys));
|
|
}
|
|
|
|
static VALUE
|
|
vm_to_proc(VALUE proc)
|
|
{
|
|
if (UNLIKELY(!rb_obj_is_proc(proc))) {
|
|
VALUE b;
|
|
const rb_callable_method_entry_t *me =
|
|
rb_callable_method_entry_with_refinements(CLASS_OF(proc), idTo_proc, NULL);
|
|
|
|
if (me) {
|
|
b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me, RB_NO_KEYWORDS);
|
|
}
|
|
else {
|
|
/* NOTE: calling method_missing */
|
|
b = rb_check_convert_type_with_id(proc, T_DATA, "Proc", idTo_proc);
|
|
}
|
|
|
|
if (NIL_P(b) || !rb_obj_is_proc(b)) {
|
|
rb_raise(rb_eTypeError,
|
|
"wrong argument type %s (expected Proc)",
|
|
rb_obj_classname(proc));
|
|
}
|
|
return b;
|
|
}
|
|
else {
|
|
return proc;
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
refine_sym_proc_call(RB_BLOCK_CALL_FUNC_ARGLIST(yielded_arg, callback_arg))
|
|
{
|
|
VALUE obj;
|
|
ID mid;
|
|
const rb_callable_method_entry_t *me = 0; /* for hidden object case */
|
|
rb_execution_context_t *ec;
|
|
const VALUE symbol = RARRAY_AREF(callback_arg, 0);
|
|
const VALUE refinements = RARRAY_AREF(callback_arg, 1);
|
|
int kw_splat = RB_PASS_CALLED_KEYWORDS;
|
|
VALUE klass;
|
|
|
|
if (argc-- < 1) {
|
|
rb_raise(rb_eArgError, "no receiver given");
|
|
}
|
|
obj = *argv++;
|
|
|
|
mid = SYM2ID(symbol);
|
|
for (klass = CLASS_OF(obj); klass; klass = RCLASS_SUPER(klass)) {
|
|
me = rb_callable_method_entry(klass, mid);
|
|
if (me) {
|
|
me = rb_resolve_refined_method_callable(refinements, me);
|
|
if (me) break;
|
|
}
|
|
}
|
|
|
|
ec = GET_EC();
|
|
if (!NIL_P(blockarg)) {
|
|
vm_passed_block_handler_set(ec, blockarg);
|
|
}
|
|
if (!me) {
|
|
return method_missing(ec, obj, mid, argc, argv, MISSING_NOENTRY, kw_splat);
|
|
}
|
|
return rb_vm_call0(ec, obj, mid, argc, argv, me, kw_splat);
|
|
}
|
|
|
|
static VALUE
|
|
vm_caller_setup_arg_block(const rb_execution_context_t *ec, rb_control_frame_t *reg_cfp,
|
|
const struct rb_callinfo *ci, const rb_iseq_t *blockiseq, const int is_super)
|
|
{
|
|
if (vm_ci_flag(ci) & VM_CALL_ARGS_BLOCKARG) {
|
|
VALUE block_code = *(--reg_cfp->sp);
|
|
|
|
if (NIL_P(block_code)) {
|
|
return VM_BLOCK_HANDLER_NONE;
|
|
}
|
|
else if (block_code == rb_block_param_proxy) {
|
|
return VM_CF_BLOCK_HANDLER(reg_cfp);
|
|
}
|
|
else if (SYMBOL_P(block_code) && rb_method_basic_definition_p(rb_cSymbol, idTo_proc)) {
|
|
const rb_cref_t *cref = vm_env_cref(reg_cfp->ep);
|
|
if (cref && !NIL_P(cref->refinements)) {
|
|
VALUE ref = cref->refinements;
|
|
VALUE func = rb_hash_lookup(ref, block_code);
|
|
if (NIL_P(func)) {
|
|
/* TODO: limit cached funcs */
|
|
VALUE callback_arg = rb_ary_hidden_new(2);
|
|
rb_ary_push(callback_arg, block_code);
|
|
rb_ary_push(callback_arg, ref);
|
|
OBJ_FREEZE_RAW(callback_arg);
|
|
func = rb_func_lambda_new(refine_sym_proc_call, callback_arg, 1, UNLIMITED_ARGUMENTS);
|
|
rb_hash_aset(ref, block_code, func);
|
|
}
|
|
block_code = func;
|
|
}
|
|
return block_code;
|
|
}
|
|
else {
|
|
return vm_to_proc(block_code);
|
|
}
|
|
}
|
|
else if (blockiseq != NULL) { /* likely */
|
|
struct rb_captured_block *captured = VM_CFP_TO_CAPTURED_BLOCK(reg_cfp);
|
|
captured->code.iseq = blockiseq;
|
|
return VM_BH_FROM_ISEQ_BLOCK(captured);
|
|
}
|
|
else {
|
|
if (is_super) {
|
|
return GET_BLOCK_HANDLER();
|
|
}
|
|
else {
|
|
return VM_BLOCK_HANDLER_NONE;
|
|
}
|
|
}
|
|
}
|