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Test included for the situation formerly was not working.
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Previously, the keyword hash was duped (which results in a regular
hash), but the dup was not marked as a keyword hash, causing the
hash not to be marked as keyword hash even though it should be.
Notes:
Merged: https://github.com/ruby/ruby/pull/2609
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This mirrors the behavior when manually splatting a hash. This
mirrors the changes made in setup_parameters_complex in
6081ddd6e6f2297862b3c7e898d28a76b8f9240b, so that splatting to a
non-iseq method works the same as splatting to an iseq method.
Notes:
Merged: https://github.com/ruby/ruby/pull/2606
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When ruby2_keywords is used on a method, keywords passed to the method
are flagged. When the hash is passed as the last element of an
argument splat to another method, the hash should be treated as a
keyword splat. When keyword splatting a hash, a duplicate of the
hash is made. So when auto-splatting the hash with the keyword
flag, a duplicate of the hash should also be made.
This fixes cases where the hash is later passed to another method
and would be treated as keywords there:
class Object
ruby2_keywords def foo(*a) bar(*a) end
def bar(*a) baz(*a) end
def baz(*a, **kw) [a, kw] end
end
foo(:a=>1)
Previously, this would pass the :a=>1 as keywords to bar and also as
keywords to baz. Now it only passes :a=>1 as keywords to bar, but bar
passes :a=>1 as a positional hash to baz (which in this case
generates a warning in 2.7).
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There are libraries that use define_method with argument splats
where they would like to pass keywords through the method. To
more easily allow such libraries to use ruby2_keywords to handle
backwards compatibility, it is necessary for ruby2_keywords to
support bmethods.
Notes:
Merged: https://github.com/ruby/ruby/pull/2532
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If a method accepts no keywords and was called with a keyword, an
ArgumentError was not always issued previously. Force methods that
accept no keywords to go through setup_parameters_complex so that
an ArgumentError is raised if keywords are provided.
Notes:
Merged: https://github.com/ruby/ruby/pull/2501
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This fixes instance_exec and similar methods. It also fixes
Enumerator::Yielder#yield, rb_yield_block, and a couple of cases
with Proc#{<<,>>}.
This support requires the addition of rb_yield_values_kw, similar to
rb_yield_values2, for passing the keyword flag.
Unlike earlier attempts at this, this does not modify the rb_block_call_func
type or add a separate function type. The functions of type
rb_block_call_func are called by Ruby with a separate VM frame, and we can
get the keyword flag information from the VM frame flags, so it doesn't need
to be passed as a function argument.
These changes require the following VM functions accept a keyword flag:
* vm_yield_with_cref
* vm_yield
* vm_yield_with_block
Notes:
Merged: https://github.com/ruby/ruby/pull/2493
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This requires adding rb_proc_call_kw to pass the keyword flag.
Notes:
Merged: https://github.com/ruby/ruby/pull/2491
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Notes:
Merged: https://github.com/ruby/ruby/pull/2484
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Notes:
Merged: https://github.com/ruby/ruby/pull/2484
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This approach uses a flag bit on the final hash object in the regular splat,
as opposed to a previous approach that used a VM frame flag. The hash flag
approach is less invasive, and handles some cases that the VM frame flag
approach does not, such as saving the argument splat array and splatting it
later:
ruby2_keywords def foo(*args)
@args = args
bar
end
def bar
baz(*@args)
end
def baz(*args, **kw)
[args, kw]
end
foo(a:1) #=> [[], {a: 1}]
foo({a: 1}, **{}) #=> [[{a: 1}], {}]
foo({a: 1}) #=> 2.7: [[], {a: 1}] # and warning
foo({a: 1}) #=> 3.0: [[{a: 1}], {}]
It doesn't handle some cases that the VM frame flag handles, such as when
the final hash object is replaced using Hash#merge, but those cases are
probably less common and are unlikely to properly support keyword
argument separation.
Use ruby2_keywords to handle argument delegation in the delegate library.
Notes:
Merged: https://github.com/ruby/ruby/pull/2477
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Kernel#send takes a different optimized code path that was already
handled.
Notes:
Merged: https://github.com/ruby/ruby/pull/2481
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When Object#to_enum is passed a block, the block is called to get
a size with the arguments given to to_enum. This calls the block
with the same keyword flag as to_enum is called with.
This requires adding rb_check_funcall_kw and
rb_check_funcall_default_kw to handle keyword flags.
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If defined in Ruby, dig would be defined as def dig(arg, *rest) end,
it would not use keywords. If the last dig argument was an empty
hash, it could be treated as keyword arguments by the next dig
method. Allow dig to pass along the empty keyword flag if called
with an empty keyword, to suppress the previous behavior and force
treating the hash as a positional argument and not keywords.
Also handle the case where dig calls method_missing, passing the
empty keyword flag to that as well.
This requires adding rb_check_funcall_with_hook_kw functions, so
that dig can specify how arguments are treated. It also adds
kw_splat arguments to a couple static functions.
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Replace [arg=1, args] with [arg, args] so we can actually test
the value correctly.
Add some missing tests for **h3 when method accepts (**args).
Add tests for passing positional hashes to (**args) methods and
check for the expected warnings/errors.
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Make sure that vm_yield_with_cfunc can correctly set the empty keyword
flag by passing 2 as the kw_splat value when calling it in
vm_invoke_ifunc_block. Make sure calling.kw_splat is set to 1 and not
128 in vm_sendish, so we can safely check for different kw_splat values.
vm_args.c needs to call add_empty_keyword, and to make JIT happy, the
function needs to be exported. Rename the function to
rb_adjust_argv_kw_splat to more accurately reflect what it does, and
mark it as MJIT exported.
Notes:
Merged: https://github.com/ruby/ruby/pull/2462
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This makes method_missing take a flag for whether keyword arguments
were passed.
Adds tests both for rb_call_super_kw usage as well as general usage
of super calling method_missing in Ruby methods.
Notes:
Merged: https://github.com/ruby/ruby/pull/2462
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This sets the correct VM frame flags when using Method#call to
call funcs, and handles empty keyword hashes for cfuncs,
attr_reader, and attr_writer. It also fixes calls to send through
Method#call. It adds tests for all of those, as well as tests for
using Method#call to call define_method, lambda, and sym_procs
(which didn't require code changes).
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Previously, the warning functions skipped warning in these cases.
This removes the skipping, and uses a less descriptive warning
instead.
This affected both last argument to keyword warnings and keyword
split warnings.
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This removes an invalid keyword argument separation warning for
code such as:
```ruby
def foo(arg)
arg
end
kw = {}
foo(*[1], **kw)
```
This warning was caused because the remove_empty_keyword_hash
was set based on a comparison with two variables, and in this
case, one of the variables was updated after the check and we
need to use the updated variable.
Simplify things by just inlining the comparison.
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No code changes are necessary, but we didn't have as extensive
tests for these calls previously.
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Method#call, UnboundMethod#bind_call
Also add keyword argument separation warnings for Class#new and Method#call.
To allow for keyword argument to required positional hash converstion in
cfuncs, add a vm frame flag indicating the cfunc was called with an empty
keyword hash (which was removed before calling the cfunc). The cfunc can
check this frame flag and add back an empty hash if it is passing its
arguments to another Ruby method. Add rb_empty_keyword_given_p function
for checking if called with an empty keyword hash, and
rb_add_empty_keyword for adding back an empty hash to argv.
All of this empty keyword argument support is only for 2.7. It will be
removed in 3.0 as Ruby 3 will not convert empty keyword arguments to
required positional hash arguments. Comment all of the relevent code
to make it obvious this is expected to be removed.
Add rb_funcallv_kw as an public C-API function, just like rb_funcallv
but with a keyword flag. This is used by rb_obj_call_init (internals
of Class#new). This also required expected call_type enum with
CALL_FCALL_KW, similar to the recent addition of CALL_PUBLIC_KW.
Add rb_vm_call_kw as a internal function, used by call_method_data
(internals of Method#call and UnboundMethod#bind_call). Add tests
for UnboundMethod#bind_call keyword handling.
Notes:
Merged: https://github.com/ruby/ruby/pull/2432
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method_missing
This is the same as the bmethod, sym proc, and send cases,
where we don't remove the keyword splat, so later code can
move it to a required positional parameter and warn.
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procs
This is the same as the bmethod and send cases, where we don't
remove the keyword splat, so later code can move it to to a
a required positional parameter and warn.
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lambda and bmethod
The lambda case is similar to the attr_writer case, except we have
to determine the number of required parameters from the iseq
instead of being able to assume a single required parameter.
This fixes a lot of lambda tests which were switched to require
warnings for all usage of keyword arguments. Similar to method
handling, we do not warn when passing keyword arguments to
lambdas that do not accept keyword arguments, the argument is
just passed as a positional hash in that case, unless it is empty.
If it is empty and not the final required parameter, then we
ignore it. If it is empty and the final required parameter, then
we pass it for backwards compatibility and emit a warning, as in
Ruby 3 we will not pass it.
The bmethod case is similar to the send case, in that we do not
want to remove empty keyword splats in vm_call_bmethod, as that
prevents later call handling from moving them to required
positional arguments and warning.
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In general, we want to ignore empty keyword hashes. The only case
where we want to allow them for backwards compatibility is when
they are necessary to satify the final required positional argument.
In that case, we want to not ignore them, but we do want to warn,
as that will be going away in Ruby 3.
This commit implements this support for regular methods and
attr_writer methods.
In order to allow send to forward arguments correctly, send no
longer removes empty keyword hashes. It is the responsibility of
the final method to remove the empty keyword hashes now. This
change was necessary as otherwise send could remove the empty
keyword hashes before the regular or attr_writer methods could
move them to required positional arguments.
For completeness, add tests for keyword handling regular
methods calls.
This makes rb_warn_keyword_to_last_hash non-static in vm_args.c
so it can be reused in vm_insnhelper.c, and also moves declarations
before statements in the rb_warn_* functions in vm_args.c.
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While doing so is not backwards compatible with Ruby 2.6, it is
necessary for generic argument forwarding to work for all methods:
```ruby
def foo(*args, **kw, &block)
bar(*args, **kw, &block)
end
```
If you do not remove empty keyword hashes, and bar does not accept
keyword arguments, then a call to foo without keyword arguments
calls bar with an extra positional empty hash argument.
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and lambda.
When define_method is a simple iseq (`define_method(:m) {|x| ... }`),
passing keywords to it (`m(**kw)`) didn't print a warning.
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Similar to 38e9c1bc35d5549575fbb263afff560e97db068e
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Similar to 38e9c1bc35d5549575fbb263afff560e97db068e
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Now the mechanism that conveys kw_splat flag is gradually established,
so the hack to drop the empty keyword hash is not needed for
vm_call_opt_send.
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not via Object#send which uses a fast path vm_call_opt_send.
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...only when a "remove_empty_keyword_hash" flag is specified.
After CALLER_SETUP_ARG is called, `ci->flag & VM_CALL_KW_SPLAT` must not
be used. Instead. use `calling->kw_splat`. This is because
CALLER_SETUP_ARG may modify argv and update `calling->kw_splat`, and
`ci->flag & VM_CALL_KW_SPLAT` may be inconsistent with the result.
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method_missing
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Make rb_sym_proc_call take a flag for whether a keyword argument
is used, and use the new rb_funcall_with_block_kw function to
pass that information.
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The kw_splat flag is whether the original call passes keyword or not.
Some types of methods (e.g., bmethod and sym_proc) drops the
information. This change tries to propagate the flag to the final
callee, as far as I can.
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Previously, **{} was removed by the parser:
```
$ ruby --dump=parse -e '{**{}}'
@ NODE_SCOPE (line: 1, location: (1,0)-(1,6))
+- nd_tbl: (empty)
+- nd_args:
| (null node)
+- nd_body:
@ NODE_HASH (line: 1, location: (1,0)-(1,6))*
+- nd_brace: 1 (hash literal)
+- nd_head:
(null node)
```
Since it was removed by the parser, the compiler did not know
about it, and `m(**{})` was therefore treated as `m()`.
This modifies the parser to not remove the `**{}`. A simple
approach for this is fairly simple by just removing a few
lines from the parser, but that would cause two hash
allocations every time it was used. The approach taken here
modifies both the parser and the compiler, and results in `**{}`
not allocating any hashes in the usual case.
The basic idea is we use a literal node in the parser containing
a frozen empty hash literal. In the compiler, we recognize when
that is used, and if it is the only keyword present, we just
push it onto the VM stack (no creation of a new hash or merging
of keywords). If it is the first keyword present, we push a
new empty hash onto the VM stack, so that later keywords can
merge into it. If it is not the first keyword present, we can
ignore it, since the there is no reason to merge an empty hash
into the existing hash.
Example instructions for `m(**{})`
Before (note ARGS_SIMPLE):
```
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,7)> (catch: FALSE)
0000 putself ( 1)[Li]
0001 opt_send_without_block <callinfo!mid:m, argc:0, FCALL|ARGS_SIMPLE>, <callcache>
0004 leave
```
After (note putobject and KW_SPLAT):
```
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,7)> (catch: FALSE)
0000 putself ( 1)[Li]
0001 putobject {}
0003 opt_send_without_block <callinfo!mid:m, argc:1, FCALL|KW_SPLAT>, <callcache>
0006 leave
```
Example instructions for `m(**h, **{})`
Before and After (no change):
```
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,12)> (catch: FALSE)
0000 putself ( 1)[Li]
0001 putspecialobject 1
0003 newhash 0
0005 putself
0006 opt_send_without_block <callinfo!mid:h, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
0009 opt_send_without_block <callinfo!mid:core#hash_merge_kwd, argc:2, ARGS_SIMPLE>, <callcache>
0012 opt_send_without_block <callinfo!mid:m, argc:1, FCALL|KW_SPLAT>, <callcache>
0015 leave
```
Example instructions for `m(**{}, **h)`
Before:
```
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,12)> (catch: FALSE)
0000 putself ( 1)[Li]
0001 putspecialobject 1
0003 newhash 0
0005 putself
0006 opt_send_without_block <callinfo!mid:h, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
0009 opt_send_without_block <callinfo!mid:core#hash_merge_kwd, argc:2, ARGS_SIMPLE>, <callcache>
0012 opt_send_without_block <callinfo!mid:m, argc:1, FCALL|KW_SPLAT>, <callcache>
0015 leave
```
After (basically the same except for the addition of swap):
```
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,12)> (catch: FALSE)
0000 putself ( 1)[Li]
0001 newhash 0
0003 putspecialobject 1
0005 swap
0006 putself
0007 opt_send_without_block <callinfo!mid:h, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
0010 opt_send_without_block <callinfo!mid:core#hash_merge_kwd, argc:2, ARGS_SIMPLE>, <callcache>
0013 opt_send_without_block <callinfo!mid:m, argc:1, FCALL|KW_SPLAT>, <callcache>
0016 leave
```
Notes:
Merged: https://github.com/ruby/ruby/pull/2428
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vm_call_method_missing was dropping VM_CALL_KW_SPLAT, so this just
makes it not drop it, to get the same behavior as calling the method
directly.
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to suppress redefinition warnings.
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vm_call_opt_send was dropping VM_CALL_KW_SPLAT, so this just makes
it not drop it, to get the same behavior as calling the method
directly.
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calling cfunc
This mirrors earlier changes in keyword argument separation for
calling Ruby methods and calling procs/lambdas, so that behavior
is kept the same.
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This shows locations in places it didn't before, such as for
proc calls, and fixes the location for super calls.
This requires making iseq_location non-static and MJIT exported,
which I hope will not cause problems.
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parameters
Previously, there was no warning in this case, even though we will
be changing the behavior in Ruby 3.
Fixes [Bug #14130]
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This warns about a case that we will continue to support.
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Notes:
Merged: https://github.com/ruby/ruby/pull/2395
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