Branch: refs/heads/davem/xs_refactor10
  Home:   https://github.com/Perl/perl5
  Commit: c3581ccfdd8bb842c662db83c991f48e9bf4a282
      
https://github.com/Perl/perl5/commit/c3581ccfdd8bb842c662db83c991f48e9bf4a282
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Constants.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/CountLines.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Eval.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Utilities.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/Typemaps.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/Typemaps/Cmd.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/Typemaps/InputMap.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/Typemaps/OutputMap.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/Typemaps/Type.pm
    M dist/ExtUtils-ParseXS/lib/perlxs.pod

  Log Message:
  -----------
  ParseXS: bump version 3.57 => 3.58


  Commit: 9fb3e9ffc00d731c05738c3120ebd6de47a20478
      
https://github.com/Perl/perl5/commit/9fb3e9ffc00d731c05738c3120ebd6de47a20478
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add file/line_no fields to Node

Add file and line_no fields to the base class of all Node types to
record where that node was defined within the XS src file.

(There aren't many node types yet, so this commit doesn't really do
anything useful at the moment.)


  Commit: 7c2ab8a0caf8ec1ca5e9e51167ef1c7e4fdaf274
      
https://github.com/Perl/perl5/commit/7c2ab8a0caf8ec1ca5e9e51167ef1c7e4fdaf274
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add multiline,code,PREINIT node

Add these Node subclasses:

    ExtUtils::ParseXS::Node::multiline
    ExtUtils::ParseXS::Node::code
    ExtUtils::ParseXS::Node::PREINIT

The first is a very generic base class for the many planned node types
which will represent multi-line XS keywords, such as

    FOO: aaa
       bbb
       ccc

The lines are just read into an array ref.

ExtUtils::ParseXS::Node::code is a generic subclass of Node::multiline
which represents keywords that contain sections of C code, such as
PREINIT, PPCODE etc. It does extra processing such as skipping leading
blank lines and wrapping the output in '#line ...'.

ExtUtils::ParseXS::Node::PREINIT is a concrete subclass of Node::code
which represents the PREINIT keyword. This is kind of a
proof-of-concept; other such code keywords (CODE, PPCODE etc) will be
added later.

The net effect of this commit is to move processing of the PREINIT:
keyword into the parse() and as_code() methods of the Node::PREINIT
class (and/or its parents) and away from the print_section() and
PREINIT_handler() methods in ExtUtils::ParseXS.

This is intended as a small incremental step towards having a real AST.

A PREINIT object is currently created, parsed, printed and destroyed all
at the same point in time. In some future refactoring, the intention is
that the object will be stored in a tree, and the parsing and
code-emitting steps will be done at different times.


  Commit: 4994f2e5ff92c534be05b698ac0bced819dec150
      
https://github.com/Perl/perl5/commit/4994f2e5ff92c534be05b698ac0bced819dec150
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add C_ARGS,IF,IF_MACRO nodes

Add these Node subclasses:

    ExtUtils::ParseXS::Node::multiline_merged
    ExtUtils::ParseXS::Node::C_ARGS
    ExtUtils::ParseXS::Node::INTERFACE
    ExtUtils::ParseXS::Node::INTERFACE_MACRO

multiline_merged is a subclass of multiline which merges all the lines
associated with a keyword into a single string. It is then used as a
base class for the three concrete classes C_ARGS etc which correspond to
keywords which are multi-line but treat all lines as a single string.

The effect of this commit is to move more keyword processing out of
ExtUtils::ParseXS and into Node.pm, in preparation for building an AST.


  Commit: d473ad70a6bab1cd6b45cb9413c42fa1dacc4924
      
https://github.com/Perl/perl5/commit/d473ad70a6bab1cd6b45cb9413c42fa1dacc4924
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: Node.pm: add class helper fn

Add a helper function, build_subclass, to ExtUtils::ParseXS::Node
to simplify the boilerplate required to declare the @ISA and @FIELDS
of each Node subclass.


  Commit: 2470c6666bbf00ff471fb4d500d8946bbc252706
      
https://github.com/Perl/perl5/commit/2470c6666bbf00ff471fb4d500d8946bbc252706
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rename code Node to codeblock

Rename the just-added ExtUtils::ParseXS::Node::code class to
ExtUtils::ParseXS::Node::codeblock, as that better describes its
purpose.

(I would have updated the original commit, but reordering squashing
commits was too complex due to intervening commits.)


  Commit: 9269eb74a52687566168331fea44139cb72e4f77
      
https://github.com/Perl/perl5/commit/9269eb74a52687566168331fea44139cb72e4f77
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: match EN/DISABLE keyword more strictly

Before this commit, three keywords which take ENABLE/DISABLE
as their argument were exceedingly lax about what they would accept.
This commit makes them slightly less lax: they now have to match
an exact word, not a part word; i.e. the regex has changed from:

   /^(ENABLE|DISABLE)/i;
to:
   /^(ENABLE|DISABLE)\b/i;

Note that it still quietly ignores trailing garbage. So before both
these lines were legal; now only the second is:

    PROTOTYPES: ENABLEaaa bsbsbs stbsbsb
    PROTOTYPES: EnablE    bsbsbs stbsbsb

This commit makes VERSIONCHECK, PROTOTYPES, EXPORT_XSUB_SYMBOLS match
SCOPE, which already had the \b.

This is in preparation for an upcoming commit, which will use a common
method to parse such keywords.

This commit also changes the test infrastructure slightly: the
test_many() function no longer bails out if the eval fails; instead the
eval error message is added to any STDERR text, accessible to tests
which can now test that ParseXS did indeed call death().


  Commit: 21fef4cf8c604e9afa443e8dc3092d464c121bd8
      
https://github.com/Perl/perl5/commit/21fef4cf8c604e9afa443e8dc3092d464c121bd8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: don't pass $_ to/from parse()

The legacy KEYWORD_handler() methods expect, on entry, for $_ to hold
the remainder of the current line (after s/^s*KEYWORD:\s*//), and for
@{$self->{line}} to contain any remaining unparsed lines from the
current XSUB. On return, they set $_ to the next unparsed line, and
@{$self->{line}} to subsequent lines.

Recent commits have started added Node (and its subclasses) parse()
methods to replace the KEYWORD_handler() methods. Currently they use the
same "rely on $_ to pass the current line to and from" scheme.

This commit changes them so that they only get lines from @{$pxs->{line}}.
This removes one source of weird action-at-a-distance.


  Commit: f7c5f6614f7a1e0d3a313967eee8cd4a1bde139b
      
https://github.com/Perl/perl5/commit/f7c5f6614f7a1e0d3a313967eee8cd4a1bde139b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/perlxs.pod
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: fix SCOPE keyword and update docs

The SCOPE: keyword, which enables wrapping an XSUB's main body with
ENTER/LEAVE, has been partially broken since 5.12.0. This commit fixes
that, adds tests, and updates the very vague documentation for SCOPE in
perlxs.pod.

AFAIKT, neither the SCOPE keyword, nor it's associated /* SCOPE */
magic comment in typemap files, are used anywhere in core or on CPAN,
nor in any tests. ('SCOPE: DISABLE' appears in a single test file, but
disabled is the default anyway.)

Background:

The SCOPE keyword was added by perl-5.003_03-21-gdb3b941461 (with
documentation added soon after by perl-5.003_03-34-g84287afe68).
This made the SCOPE: keyword an XSUB-body-scoped keyword, e.g.

    void
    foo()
        SCOPE: ENABLED
        CODE:
            blah

where the emitted 'blah' code would now be wrapped with ENTER/LEAVE.

13 years later, with v5.11.0-30-g28892255e8, this was extended so that
the keyword could appear just before the XSUB too:

    SCOPE: ENABLED
    void
    foo()
        CODE:
            blah

I don't know what the motivation was behind this; the commit was part of
a larger upgrade, which just listed among other bug fixes:

    - Fix the SCOPE keyword [Goro Fuji]

but I can't find any trace of a corresponding problem description on p5p
or RT.

This change had the unfortunate side-effect of breaking the existing
XSUB-scoped variant. This is indirectly due to the fact that XSUB-scoped
KEYWORD_handler() methods are supposed to set $_ to the next line before
returning, while file scoped ones aren't supposed to.

That change made SCOPE_handler() both file- and xsub-scoped, and also
made it no longer update $_. So the new file-scoped variant worked,
while the old xsub-scope variant broke, because it now retuned with
$_ set to 'ENABLE' rather than to the next line.

The temporary fix in this commit makes SCOPE_handler() check who its
caller is and sets $_ (or not) accordingly. A proper fix will occur
shortly when a SCOPE Node subclass is added, since the NODE::parse()
methods don't pass values back and forth in $_.

This commit also updates the pod for SCOPE, which was very vague about
what the SCOPE keyword did and where it should go, syntax-wise.  I also
changed it so that it suggests the magic comment token in a typemap
entry should be /* SCOPE */. The actually regex is {/\*.*scope.*\*/}i,
which matches a whole bunch of stuff. If we ever make it stricter,
insisting on an upper-case SCOPE with just surrounding white space seems
the way to go.


  Commit: 0ea35bf151cd58cbd9a52c31cfbdd9a94f96364d
      
https://github.com/Perl/perl5/commit/0ea35bf151cd58cbd9a52c31cfbdd9a94f96364d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add classes for ENABLE keywords

Add the following classes:

    ExtUtils::ParseXS::Node::oneline
    ExtUtils::ParseXS::Node::enable
    ExtUtils::ParseXS::Node::EXPORT_XSUB_SYMBOLS
    ExtUtils::ParseXS::Node::PROTOTYPES
    ExtUtils::ParseXS::Node::SCOPE
    ExtUtils::ParseXS::Node::VERSIONCHECK

The first two are base classes for XS keywords which consume only a
since line of XS src, and which then expect the keyword to have a value
of ENABLE/DISABLE.
The rest are concrete Node subclasses representing all the purely
ENABLE/DISABLE keywords.


  Commit: 8ccdf7482cf4089b55fbddb605a203394314c3af
      
https://github.com/Perl/perl5/commit/8ccdf7482cf4089b55fbddb605a203394314c3af
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add PROTOTYPE node

Add this Node subclass:

    ExtUtils::ParseXS::Node::PROTOTYPE

This commit moves the parsing code for the PROTOTYPE keyword from the
old PROTOTYPE_handler() method in ExtUtils::ParseXS and into a new
Node subclass parse() method.

Also add a few more tests for PROTOTYPE - especially parsing edge cases.


  Commit: 531b65d3af524cd26866fadacb8f71a228d9c9ad
      
https://github.com/Perl/perl5/commit/531b65d3af524cd26866fadacb8f71a228d9c9ad
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: use __PACKAGE__ to simplify

In Node.pm, replace a bunch of declarations of the form

    package ExtUtils::ParseXS::Node::INTERFACE_MACRO;

    sub parse {
        my ExtUtils::ParseXS::Node::INTERFACE_MACRO $self = shift;
        ...
    }

with

    package ExtUtils::ParseXS::Node::INTERFACE_MACRO;

    sub parse {
        my __PACKAGE__ $self = shift;
        ...
    }


  Commit: 8208a2797245d70a3906d14822d531858c35ecb7
      
https://github.com/Perl/perl5/commit/8208a2797245d70a3906d14822d531858c35ecb7
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: fix test infrastructure under 5.8.x

A recent commit expanded test_many() in t/001-basic.t to test for errors
as well as warnings. This commit tweaks that change to work under 5.8.x:
it was emitting "Use of uninitialized value in concatenation" warnings.


  Commit: f1f0340039ebd711c515b536b2cb0cfb053aceac
      
https://github.com/Perl/perl5/commit/f1f0340039ebd711c515b536b2cb0cfb053aceac
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reindent Param::as_output_code

When I moved this sub from ParseXS.pm to Node.pm it retained its
2-char indent. Node.pm uses a 4-char indent, so reindent it.

This is whitespace-only change, apart from splitting a few long lines
and re-wrapping some comment paragraphs.


  Commit: 7ae52717b22ff53f24e0fc077bae4f2398b7e433
      
https://github.com/Perl/perl5/commit/7ae52717b22ff53f24e0fc077bae4f2398b7e433
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add ALIAS,ALIAS_line nodes

Add these Node subclasses:

    ExtUtils::ParseXS::Node::keylines
    ExtUtils::ParseXS::Node::keyline
    ExtUtils::ParseXS::Node::ALIAS
    ExtUtils::ParseXS::Node::ALIAS_line

An ALIAS node represents an ALIAS keyword, which can have multiple
ALIAS_line kid nodes, each of which represent one processed line from
an ALIAS section.

keylines and keyline are base classes for ALIAS and ALIAS_line
respectively, which handle the general processing of keywords which are
multi-line but where each line needs treating individually. Other
examples would be INPUT and OUTPUT keywords (not yet done). It's
slightly overkill just for ALIAS (arguably all the data could have just
been stored in a single ALIAS node), but doing it properly now will make
converting INPUT and OUTPUT keywords into nodes easier in the near
future.

The base classes also handle shifting lines off the input queue in such
a way that warnings and errors come from the right line.

Note that this is the first commit which adds an *intermediate* AST tree
node class: the previous commits have just been adding terminal nodes.
In particular, this commit adds a 'kids' array ref field to the base
Node class which allows nodes to have kids; and the parse method for
ALIAS repeatedly creates ALIAS_line objects, calls their parse method,
then adds to them the ALIAS's kids list. Thus it's an embryonic
recursive-decent parser, in the sense that parser subs for 'big' things
call parser subs for smaller things. Technically, while there will be
nested calls to parser methods, there won't be actual recursion, since
the XS syntax isn't recursive.

The bulk of this commit consists of moving the get_aliases() sub from
Parse.pm into Node.pm and renaming it to
ExtUtils::ParseXS::Node::ALIAS_line::parse(). The code is basically
unchanged except for tweaks required to make it a Node subclass.
Similarly, ALIAS_handler() becomes
ExtUtils::ParseXS::Node::ALIAS::parse().

This commit also adds some more tests for the ALIAS keyword: in
particular, while there were already some tests for alias warnings,
there didn't seem to be any for errors.

The old, existing test code for ALIAS is modified slightly so that 'die' text
isn't lost if something goes horribly wrong. That test code doesn't use
the newer, more general test_many() function from t/001-basic.t which
handles that sort of thing better.


  Commit: 6955a17bc22a4e9d10e664d5310e7f01c4b6961d
      
https://github.com/Perl/perl5/commit/6955a17bc22a4e9d10e664d5310e7f01c4b6961d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: improve error test coverage for Node.pm

I audited all the Warn(), death() etc calls in Node.pm and added
tests for any which weren't yet covered (apart from hard-to-reproduce
ones like internal errors).


  Commit: decc152595d8b1b6de68fde6d726ebd5d08aaed4
      
https://github.com/Perl/perl5/commit/decc152595d8b1b6de68fde6d726ebd5d08aaed4
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add ATTRS node

Add
     ExtUtils::ParseXS::Node::ATTRS

class, and add a basic test.


  Commit: 2a5f6c1be2709a8659b698bd85a7948c2a5a4cbe
      
https://github.com/Perl/perl5/commit/2a5f6c1be2709a8659b698bd85a7948c2a5a4cbe
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add OVERLOAD node

Add
     ExtUtils::ParseXS::Node::OVERLOAD

class, and add a basic test.

Note that currently this code doesn't warn about duplicate op names (it
just silently skips duplicates), nor warn about unknown op names (it
happily accepts them). This commit preserves the current behaviour for
now.


  Commit: 3a4df27873145fa4a1ee09f1bce0daecabbc4a30
      
https://github.com/Perl/perl5/commit/3a4df27873145fa4a1ee09f1bce0daecabbc4a30
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: INPUT_handler() use $line vs $_

This is #1 of a small series of commits to refactor the INPUT_handler()
method and turn it into a Node subclass method.

This commit changes the main loop from using $_ to hold the current line,
to using the variable $line instead.


  Commit: cfdba7ca4849547ceb29ded8ffec5d2648acfe24
      
https://github.com/Perl/perl5/commit/cfdba7ca4849547ceb29ded8ffec5d2648acfe24
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: INPUT_handler() split into two

This is #2 of a small series of commits to refactor the INPUT_handler()
method and turn it into a Node subclass method.

This commit splits the method into two: a smaller outer one which
has the 'foreach line' loop, and a new method, INPUT_handler_line()
which contains the bulk of the old method and processes a single line
from an INPUT section.


  Commit: 44b694a3b304168489b35cc751ee2a973ae73aeb
      
https://github.com/Perl/perl5/commit/44b694a3b304168489b35cc751ee2a973ae73aeb
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: INPUT_handler() move to Node.pm

This is #3 of a small series of commits to refactor the INPUT_handler()
method and turn it into a Node subclass method.

This commit moves the ExtUtils::ParseXS methods

    INPUT_handler()
    INPUT_handler_line()

from ParseXS.pm into ParseXS/Node.pm.  For now they temporarily remain
as ExtUtils::ParseXS methods; this is just a straight cut and paste,
except for fully-qualifying the $BLOCK_regexp package variable name and
adding a couple of temporary 'package ExtUtils::ParseXS' declarations.


  Commit: b16f661b2c8ac714e2943d51989759ddb09b0e60
      
https://github.com/Perl/perl5/commit/b16f661b2c8ac714e2943d51989759ddb09b0e60
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: INPUT_handler() reindent.

This is #4 of a small series of commits to refactor the INPUT_handler()
method and turn it into a Node subclass method.

This commit reindents INPUT_handler() and INPUT_handler_line() from
2-indent to 4-indent to match the policy of the file they were moved to
in the previous commit.

Whitespace-only change


  Commit: 5bc73a0c63330fd116891f6788c1a813b59497c7
      
https://github.com/Perl/perl5/commit/5bc73a0c63330fd116891f6788c1a813b59497c7
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add INPUT, INPUT_line nodes

This is #5 of a small series of commits to refactor INPUT keyword
handling. This commit adds these two classes:

     ExtUtils::ParseXS::Node::INPUT
     ExtUtils::ParseXS::Node::INPUT_line

and converts the two ExtUtils::ParseXS methods

    INPUT_handler()
    INPUT_handler_line()

into parse() methods of those two classes

In a very minor way, this commit also starts separating in time the
parsing and the code emitting. Whereas before, each INPUT line was
parsed and then C code for it immediately emitted, now *all* lines from
an explicit or implicit INPUT section are parsed and stored as an INPUT
node with multiple INPUT_line children, and *then* the as_code() method
is called for each child. This should make no difference to the
generated output code.


  Commit: 03189be72f1626cd6e2905d09bf788dd656f6cdb
      
https://github.com/Perl/perl5/commit/03189be72f1626cd6e2905d09bf788dd656f6cdb
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: INPUT_line::parse(): remove var

This is #6 of a small series of commits to refactor INPUT keyword
handling.

There's no need any more to save the original line in $orig_line, as
$self->{line} now holds that value.

Also, wrap
    ... or blurt(...), return;

in a do block for clarity:


  Commit: 5ca5592b0bdb7893348e727807aa15261853aa3e
      
https://github.com/Perl/perl5/commit/5ca5592b0bdb7893348e727807aa15261853aa3e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add Node::INPUT_line fields

This is #7 of a small series of commits to refactor INPUT keyword
handling.

The main job of parsing an INPUT line is to extract any information on
that line and use it to update the associated Param object (which was
likely created earlier when the XSUB's signature was parsed).

This commit makes that information also be stored in new fields in the
INPUT_line object. These new fields aren't currently used for anything,
but they could in principle become useful if options for deparsing or
exporting were added to ParseXS.


  Commit: ff3ce5a48bce7e37acad47813421d2253645314b
      
https://github.com/Perl/perl5/commit/ff3ce5a48bce7e37acad47813421d2253645314b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move Param field decl

Move the declaration of the 'defer' Node::Param field  into
the "values derived from the XSUB's INPUT line" part of the
declaration.

No functional change, just fixing an error in the documentation.


  Commit: ac824c7bee7b639cb10625a868828b42d7cc1a48
      
https://github.com/Perl/perl5/commit/ac824c7bee7b639cb10625a868828b42d7cc1a48
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add Node::Param::set_proto meth

Rename the existing check() method to set_proto().  The only thing the
method was doing was calculating the overridden prototype char
for that parameter based on it's type typemap entry, if any.
So give it a better name.

Also, rationalise where and when the method is called. It was being
called each time a parameter was created, or when its type changed.

Instead, just call the method once on all parameters just after all INPUT
processing is complete, so the types can't change, but before any inline
TYPEMAP entries might change the proto char for that type.

In theory this commit should make no functional change.


  Commit: 206c00229f57612ce837e038ab5728b72ffcba0b
      
https://github.com/Perl/perl5/commit/206c00229f57612ce837e038ab5728b72ffcba0b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: add tests for NOT_IMPLEMENTED_YET

This keyword, used in place of CODE or PPCODE, emits a stub
body that just call croak(). It's undocumented, untested, and appears to
be used in only one XS file in all of CPAN.

This commit adds some very basic tests.

The next commit will change the
behaviour slightly: currently, K&R-style params get C declarations, but
code emitting stops before ANSI-style declarations and deferred
initialisations would normally be emitted. SO a couple of tests are
marked as expected to fail.


  Commit: a48e690d6251e7427f1d6a31062a59f3b660a5c0
      
https://github.com/Perl/perl5/commit/a48e690d6251e7427f1d6a31062a59f3b660a5c0
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: process NOT_IMPLEMENTED_YET later

The undocumented and almost-entirely-unused NOT_IMPLEMENTED_YET keyword
can be used at the same point in parsing where CODE: or PPCODE: could
appear, and emits a croak() call whereas a call to a C library function
would otherwise have been auto-generated.

This keyword was checked for for partway during emitting of
initialisation code; this meant that K&R-style declarations were
emitted, but ANSI_style ones weren't.

This commit moves the checking for the presence of this keyword to a bit
later: after all initialisation code emitting is complete.

This makes NOT_IMPLEMENTED_YET logically part of the body-processing
section, which now looks roughly like

    if (/NOT_IMPLEMENTED_YET/)
        emit croak
    elsif (/PPCODE:/)
        ...
    elsif (/CODE:/)
        ...
    else
        emit autocall

and so makes the parsing code cleaner.

Conceptually it means that a NOT_IMPLEMENTED_YET can now appear after
an INIT keyword; in practice, only *INPUT* section parsing is
special-cased to recognise NOT_IMPLEMENTED_YET as another valid keyword
which terminates the current section. So INIT, C_ARGS etc sections
continue to see "NOT_IMPLEMENTED_YET" as just a bit of text to be
consumed from the input stream and added to the init code or the C
signature or whatever.  Some tests have been added to confirm this.


  Commit: b801ffe718ff30e7534347850a50fb91787f3f22
      
https://github.com/Perl/perl5/commit/b801ffe718ff30e7534347850a50fb91787f3f22
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: reindent after previous commit

The previous commit altered the structure of a big if/else.
Reindent to match. Whitespace-only change


  Commit: 3a8a69c60bf1ab76f204322f4201e16b6d6f713d
      
https://github.com/Perl/perl5/commit/3a8a69c60bf1ab76f204322f4201e16b6d6f713d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: minor tweaks on main loop

Make a couple of changes to some code in the main parsing loop, to
simplify further refactoring:

- move the declaration of $implicit_OUTPUT_RETVAL closer to first use;

- eliminate 'my $generic_xsub_keys' and use the fully-qualified package
  name everywhere for the value it aliases.


  Commit: 0a77954f1015cbd0aab10d51eff0f0ad230627f7
      
https://github.com/Perl/perl5/commit/0a77954f1015cbd0aab10d51eff0f0ad230627f7
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move input parsing into a sub

Move the section of code in the main parsing loop in ParseXS.pm which
handles all the input parts of an XSUB (i.e. INPUT, PREINIT, C_ARGS etc)
into its own temporary function in Node.pm.

The main body of code moved in this commit is a pure cut+paste.
Subsequent commits will re-indent, convert it into a Node parse method,
etc.


  Commit: 41ba5aacd6a7f1ed8b15d37eaa6e4097a77da34c
      
https://github.com/Perl/perl5/commit/41ba5aacd6a7f1ed8b15d37eaa6e4097a77da34c
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reindent block of code

The previous commit moved a block of code into its own sub in a
different file. Now reindent it.

Whitespace-only.


  Commit: 1f296eaf3c3aa3328a50da95cb08e1c6788fca79
      
https://github.com/Perl/perl5/commit/1f296eaf3c3aa3328a50da95cb08e1c6788fca79
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add input_part node

Add this class:

    ExtUtils::ParseXS::Node::input_part

and give it a parse() method. This is work-in-progress; in particular
the parse() method currently also emits code, which will be moved to the
as_code() method shortly. In fact this commit mainly just converts the
block of code ripped out of the main parsing loop in process_file() in
the previous two commits into a Node subclass, mainly by doing
s/$self/$pxs/g. It also replaces the call to process_keywords() with
an inlined-version which doesn't expect $_ to be set in entry and
return. That inlined code will eventually be turned into a proper
method.

The intent of the input_part node type is to be the parent of all the
nodes created when parsing the "input" part of an XSUB - e.g. INPUT,
PREINIT, C_ARGS etc.


  Commit: 6c48ebc7d4b06082cb0500d2b123885162e43b33
      
https://github.com/Perl/perl5/commit/6c48ebc7d4b06082cb0500d2b123885162e43b33
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add input_part->as_code()

Split the contents of the ExtUtils::ParseXS::Node::input_part::parse()
method. Move all the code-emitting stuff into the (previously empty)
as_code() method.

This commit represents a significant milestone in building an AST and
emitting code *after* the AST is complete. Previously as_code() for each
node was called immediately after parse(). Now all the nodes associated
with the input part of an XSUB are parsed and stored as a (shallow)
tree, *then* the as_code() methods for all those nodes are called.

Also add an empty as_code() method to the Node base class so there's
no need to do "if $self->can('as_code')" in various places.

Also also, move the initialisation of the xsub_seen_RETVAL_in_CODE field
back into the main loop of parse_file(): it doesn't belong in
input_part->parse()


  Commit: 7db9c9144b585375a2da9ce6ee5fda207ffafeee
      
https://github.com/Perl/perl5/commit/7db9c9144b585375a2da9ce6ee5fda207ffafeee
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: mark INPUT node as implicit

Give the Node::INPUT class a boolean field called 'implicit', which
signifies an INPUT section like:

    foo(a, b)
        int a
        int b

as opposed to the explicit:

    foo(a, b)
      INPUT:
        int a
        int b

Also, only add an implicit INPUT node as a kid to the input_part node if
it has kids - i.e. if there are actually any implicit input lines
present.

Neither of these changes is needed for correct functioning, but they
might be useful for a hypothetical deparser for example.


  Commit: b8ae317909de439cc6ace3bb94a89dc9d834a13b
      
https://github.com/Perl/perl5/commit/b8ae317909de439cc6ace3bb94a89dc9d834a13b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: avoid autovivifying kids

Avoid giving some nodes an empty @kids field when looking for child
as_code methods to call. Harmless but untidy.
And simplify a second such loop.


  Commit: 93cbe56085b592635a032a89e18f02f81757293d
      
https://github.com/Perl/perl5/commit/93cbe56085b592635a032a89e18f02f81757293d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: make parse() meths return bool

Make Node parse() methods normally return '1', so that a plain 'return'
indicates failure. This can then be used by the caller to throw away a
node which failed to parse. So parsing code which spots an error and
does

    $self->blurt("....");
    return;

will no longer leave a half-formed node in the tree.

Also, make the keylines base class skip blank lines. This means that
individual keyline subclasses like INPUT_line etc don't end up
generating an empty node for each blank line.


  Commit: aa70fe77f0844acd0e353164e7cebc2ea5d1c73d
      
https://github.com/Perl/perl5/commit/aa70fe77f0844acd0e353164e7cebc2ea5d1c73d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add parse_keywords() method

Add a Node::parse_keywords() method, mainly by moving a block of code
in Node::input_part::parse() into its own method. This block of code in
turn was derived from the bodies of the legacy ExtUtils::ParseXS
check_keyword() and process_keywords() methods.

This commit also adds a $max parameter which allows parse_keywords()
to act as either check_keyword ($max == 1) or process_keywords ($max is
undef).


  Commit: 47af9511aab6a04a0dae918b2b8b3c43c91601aa
      
https://github.com/Perl/perl5/commit/47af9511aab6a04a0dae918b2b8b3c43c91601aa
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add init_part, INIT nodes

add these classes:

    package ExtUtils::ParseXS::Node::init_part
    package ExtUtils::ParseXS::Node::INIT

which replace the legacy code for parsing and emitting INIT blocks.

Also, add some basic tests for the INIT keyword.


  Commit: 4e45f124a0c3c20f8a1a15c165cfd266bf510ca3
      
https://github.com/Perl/perl5/commit/4e45f124a0c3c20f8a1a15c165cfd266bf510ca3
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add PPCODE node and tests

Add this class:

    ExtUtils::ParseXS::Node::PPCODE

and move the direct code in the main loop which handled the PPCODE
keyword into that class's parse and as_code methods.

Also add some basic tests for PPCODE.


  Commit: c4ba4ccf3f57c641c93b0afbff404eacd6a3256b
      
https://github.com/Perl/perl5/commit/c4ba4ccf3f57c641c93b0afbff404eacd6a3256b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add CODE node

Add this class:

    ExtUtils::ParseXS::Node::CODE

Note that thins commit (and the previous one for PPCODE) slightly
alter the '#line NNN foo.xs' emitted for empty CODE/PPCODE blocks.

While it still emits unchanged a '#line 101 foo.xs' prefix to the code
block for e.g.

    100: CODE:
    101:       foo
    102:

it now emits 101 rather than 100 for:

    100: CODE:
    101:
    102:

This makes no practical difference as the '#line NNN foo.xs' is immediately
followed by a '#line MMM foo.c' anyway.


  Commit: bee6b796709f5e86dc97c430ab78f893037c6fc1
      
https://github.com/Perl/perl5/commit/bee6b796709f5e86dc97c430ab78f893037c6fc1
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add code_part, NIY nodes

Add these classes:

     ExtUtils::ParseXS::Node::code_part;
     ExtUtils::ParseXS::Node::NOT_IMPLEMENTED_YET;

The NIY class is for implementing the NOT_IMPLEMENTED_YET
pseudo-keyword, and can be seen as the companion of the CODE and PPCODE
nodes - i.e. one of the options for the main body.

The code_part class is a companion to input_part and init_part and
is the parent of typically a single node such as CODE or PPCODE which is
responsible for the "main body" of the XSUB.

code_part is not complete yet; the code for emitting an autocall body in
the absence of CODE/PPCODE/NOT_IMPLEMENTED_YET is still with the caller
of code_part->parse(). That chuck of code will be moved into a node
class in the next commit.


  Commit: 74d931e314aed8a614faeaf4e31954497ade4ec3
      
https://github.com/Perl/perl5/commit/74d931e314aed8a614faeaf4e31954497ade4ec3
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add autocall node

Add this class:

     ExtUtils::ParseXS::Node::autocall

This is a node which represents the main body of an XSUB in the absence
of a real body provided by CODE or PPCODE. It doesn't have to do any
parsing, but the job of its as_code() method is to emit an
auto-generated call to a C library function of the same name as the
XSUB.

This commit does two main things:

1), it extends the Node::code_part->parse() method action so that if a
CODE or whatever keyword is not found, an autocall node is created and
added as a child instead. This means a code_part node will always have
exactly one child, one of these classes:

    NOT_IMPLEMENTED_YET
    CODE
    PPCODE
    autocall

2) all the code in the main loop which generates an autocall body
has been cut and pasted and made into the as_code() method of the new
autocall class. The only changes in addition to the raw cut and paste
are:
    - reindent
    - s/$self/$pxs/g
    - hoist the setting of the $implicit_OUTPUT_RETVAL lex var back to
      the calling code.

The diff looks more complex than it actually is.


  Commit: 8fc01fee72fa1c007c51c9454df7c45c67adfe76
      
https://github.com/Perl/perl5/commit/8fc01fee72fa1c007c51c9454df7c45c67adfe76
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: put code_part next to init_part

There is a block of code which creates, parses and calls as_code on
input_part and init_part objects. Move the newly added code_part-
creating code to be part of the same block. Also move a couple of var
declarations / initialisations earlier so that they still come before
code_part parsing.


  Commit: b2ed92ad958ef124ba3a76eda1f717753c8e1674
      
https://github.com/Perl/perl5/commit/b2ed92ad958ef124ba3a76eda1f717753c8e1674
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add POSTCALL node

add this class:

    ExtUtils::ParseXS::Node::POSTCALL

and add a few basic tests for the POSTCALL keyword.

Note that (similarly to other codeblock-derived Node classes), this
commit causes a (harmless) slight change of '#line' output for an empty
code block. In particular, this:

    5: void
    6: foo()
    7:   POSTCALL:
    8:

used to generate these two adjacent lines of C code:

    #line 7 "foo.xs"
    #line NNN "foo.c"

but now outputs:

    #line 8 "foo.xs"
    #line NNN "foo.c"


  Commit: 46a993527f9d766886e20d084d1ac67230b402c9
      
https://github.com/Perl/perl5/commit/46a993527f9d766886e20d084d1ac67230b402c9
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add CLEANUP node

add this class:

    ExtUtils::ParseXS::Node::CLEANUP

and add a few basic tests for the CLEANUP keyword.

Note that (similarly to other codeblock-derived Node classes), this
commit causes a (harmless) slight change of '#line' output for an empty
code block. In particular, this:

    5: void
    6: foo()
    7:   CLEANUP:
    8:

used to generate these two adjacent lines of C code:

    #line 7 "foo.xs"
    #line NNN "foo.c"

but now outputs:

    #line 8 "foo.xs"
    #line NNN "foo.c"


  Commit: c65cb5653e15e351d3552280d032fd5355e6cb0e
      
https://github.com/Perl/perl5/commit/c65cb5653e15e351d3552280d032fd5355e6cb0e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: OUTPUT_handler() use $line vs $_

This is #1 of a small series of commits to refactor the OUTPUT_handler()
method and turn it into a Node subclass method. This series is very
similar to the one earlier in this branch which did the same for
INPUT_handler().

This commit changes the main loop from using $_ to hold the current line,
to using the variable $line instead.


  Commit: 58ffdb250f33b23f3d5a719275fdaad82a28db37
      
https://github.com/Perl/perl5/commit/58ffdb250f33b23f3d5a719275fdaad82a28db37
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: OUTPUT_handler() split into two

This is #2 of a small series of commits to refactor the OUTPUT_handler()
method and turn it into a Node subclass method.

This commit splits the method into two: a smaller outer one which
has the 'foreach line' loop, and a new method, OUTPUT_handler_line()
which contains the bulk of the old method and processes a single line
from an OUTPUT section.


  Commit: 32bc99eb360ec1763bee5aecf4a4378269f5454f
      
https://github.com/Perl/perl5/commit/32bc99eb360ec1763bee5aecf4a4378269f5454f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: OUTPUT_handler(): mv to Node.pm

This is #3 of a small series of commits to refactor the OUTPUT_handler()
method and turn it into a Node subclass method.

This commit moves the ExtUtils::ParseXS methods

    OUTPUT_handler()
    OUTPUT_handler_line()

from ParseXS.pm into ParseXS/Node.pm.  For now they temporarily remain
as ExtUtils::ParseXS methods; this is just a straight cut and paste,
except for fully-qualifying the $BLOCK_regexp package variable name and
adding a couple of temporary 'package ExtUtils::ParseXS' declarations.


  Commit: bad63680be10cb97d89e1ac6095c10a04858978a
      
https://github.com/Perl/perl5/commit/bad63680be10cb97d89e1ac6095c10a04858978a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: OUTPUT_handler() reindent.

This is #4 of a small series of commits to refactor the OUTPUT_handler()
method and turn it into a Node subclass method.

This commit reindents OUTPUT_handler() and OUTPUT_handler_line() from
2-indent to 4-indent to match the policy of the file they were moved to
in the previous commit.

Whitespace-only change


  Commit: 5edfec5eb29c060601f693825ef225c75b0fb002
      
https://github.com/Perl/perl5/commit/5edfec5eb29c060601f693825ef225c75b0fb002
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add OUTPUT, OUTPUT_line nodes

This is #5 of a small series of commits to refactor OUTPUT keyword
handling. This commit adds these two classes:

     ExtUtils::ParseXS::Node::OUTPUT
     ExtUtils::ParseXS::Node::OUTPUT_line

and converts the two ExtUtils::ParseXS methods

    OUTPUT_handler()
    OUTPUT_handler_line()

into parse() methods of those two classes


  Commit: 9b3ee05615e3b852e0e188c3ec5acb185676ba3d
      
https://github.com/Perl/perl5/commit/9b3ee05615e3b852e0e188c3ec5acb185676ba3d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add Node::OUTPUT_line fields

This is #6 of a small series of commits to refactor OUTPUT keyword
handling.

The main job of parsing an OUTPUT line is to extract any information on
that line and use it to update the associated Param object (which was
likely created earlier when the XSUB's signature was parsed).

This commit makes that information also be stored in new fields in the
OUTPUT_line object. These new fields aren't currently used for anything,
but they could in principle become useful if options for deparsing or
exporting were added to ParseXS.


  Commit: a7c5807402758f35530f79a59e7aa254ef42d290
      
https://github.com/Perl/perl5/commit/a7c5807402758f35530f79a59e7aa254ef42d290
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: alter Node:OUTPUT_line RETVAL

This is #7 of a small series of commits to refactor OUTPUT keyword
handling.

For OUTPUT_line, move, from the parse() method to the as_code() method,
the bit which checks for RETVAL and causes its "push return value on
stack" C code to be emitted later. Also, add a long comment explaining
why this delay is required.

The existing code in parse() worked purely by chance: it was just
returning (without a value) if the parameter name was RETVAL. This was a
hangover from moving the existing code from OUTPUT_handler() into a Node
parse() method. By returning undef, it was signalling to the caller that
the parse of the line failed, and so the subsequent call to as_code()
was skipped. Instead, indicate that the parse was successful, and have
as_code() skip RETVAL.


  Commit: db9646ac6b01c566ffbe45a0b9185d35bcb4b792
      
https://github.com/Perl/perl5/commit/db9646ac6b01c566ffbe45a0b9185d35bcb4b792
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: add two xsub_foo fields

Add these two fields to the ExtUtils::ParseXS class:

    xsub_implicit_OUTPUT_RETVAL
    xsub_XSRETURN_count

and use them instead of these two lexical vars

    $implicit_OUTPUT_RETVAL
    $XSRETURN_count

in the main parsing loop. This is a temporary(ish) measure to simplify some
code refactoring that's about to happen.


  Commit: 322341f9514cc1c7f5b283ed34760a58d1041d48
      
https://github.com/Perl/perl5/commit/322341f9514cc1c7f5b283ed34760a58d1041d48
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move output parsing into a sub

Move the section of code in the main parsing loop in ParseXS.pm which
handles the output parts of an XSUB (i.e. OUTPUT plus POSTCALL etc)
into its own temporary function in Node.pm.

The main body of code moved in this commit is a pure cut+paste.
Subsequent commits will re-indent, convert it into a Node parse method,
etc.


  Commit: a5542f568e2ec8fef234e83e52abffa1faad2009
      
https://github.com/Perl/perl5/commit/a5542f568e2ec8fef234e83e52abffa1faad2009
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reindent block of code

The previous commit moved a block of code into its own sub in a
different file. Now reindent it.

Whitespace-only.


  Commit: 7376bcfe16408da3ddba5543c3f5e20fb7d1ff35
      
https://github.com/Perl/perl5/commit/7376bcfe16408da3ddba5543c3f5e20fb7d1ff35
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: remove redundant braces

Remove a { } pair round a block of code which are no longer needed.
No functional change.


  Commit: efefc3d07d674a170c43fd80c632a3308376eb6e
      
https://github.com/Perl/perl5/commit/efefc3d07d674a170c43fd80c632a3308376eb6e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add output_part node

Add this class:

    ExtUtils::ParseXS::Node::output_part

and give it parse() and as_code() methods.

The block of code cut out of the main parsing loop and moved into
Node.pm in the last few commits forms the bulk of the as_code() method,
with mainly just doing s/$self/$pxs/g to turn it into a Node subclass.
The small bit of parsing at the start of that block of code forms the
basis for parse() - basically looking for OUTPUT, POSTCALL or generic
keywords.

The intent of the output_part node type is to be the parent of all the
nodes created when parsing the "output" part of an XSUB.


  Commit: cd1b5beaa9b3910ca017fc6a2f43feec99b0315d
      
https://github.com/Perl/perl5/commit/cd1b5beaa9b3910ca017fc6a2f43feec99b0315d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add cleanup_part node

add this class:

    package ExtUtils::ParseXS::Node::cleanup_part

This node holds any CLEANUP or other generic keywords parsed at the end
of an XSUB.


  Commit: 1a14fa8d7687c269ef4455d05a714a4af7819415
      
https://github.com/Perl/perl5/commit/1a14fa8d7687c269ef4455d05a714a4af7819415
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: mv xsub_implicit_OUTPUT_RETVAL

Move the setting of $self->{xsub_implicit_OUTPUT_RETVAL} into the
autocall::parse() code, as it makes more sense there.

Should make no functional difference.


  Commit: f43812bc499bc81d0be50d2b9bf6458c4b738b74
      
https://github.com/Perl/perl5/commit/f43812bc499bc81d0be50d2b9bf6458c4b738b74
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add xbody node

add this class:

    package ExtUtils::ParseXS::Node::xbody

This node holds all the foo_part nodes which make up the body of an
XSUB. Note that in the presence of CASE: keywords, an XSUB may have
multiple xbodys, one per CASE.

This node doesn't contain the signature, and nor is it responsible
for emitting the code for the closing part of an XSUB e.g. the
XSRETURN(N); there is only one of those per XSUB, so will handled by a
higher-level node, once that gets created in further refactoring.


  Commit: 962b410b2d5355fc74a985c9725331fa1a2bb6a2
      
https://github.com/Perl/perl5/commit/962b410b2d5355fc74a985c9725331fa1a2bb6a2
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move some code emitting

Move the opening brace emitted by input_part->as_code() into the
newly-created xbody->as_code(). Makes no functional difference
(xbody->as_code() immediately calls input_part->as_code()) but logically
wrapping the generated XSUB in '{...}' should be done at the higher
level.


  Commit: 151da801f9f957a2f454741801c2c1d93ebed69f
      
https://github.com/Perl/perl5/commit/151da801f9f957a2f454741801c2c1d93ebed69f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: tidy some C-code-emitting code

Simplify some code, mainly in the freshly-added xbody->as_code() method.

In particular, add $open_brace, $close_brace vars to hide '{}' from text
editors in a slightly less obscure manner than Q("[[") and Q("]]").

No change in functionality.


  Commit: 2363b14424fb4d233713a22203659c4162019218
      
https://github.com/Perl/perl5/commit/2363b14424fb4d233713a22203659c4162019218
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: add CASE tests, tweak err msgs

Add tests for for various errors concerning CASE and bad end-of-function
handling. Tweak the error messages for the latter: add "Error:" prefix
and put the bad line in quotes.


  Commit: cba3eba5074235d9da06729fa1c30dd6156c44c2
      
https://github.com/Perl/perl5/commit/cba3eba5074235d9da06729fa1c30dd6156c44c2
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add ReturnType node

add this class:

    ExtUtils::ParseXS::Node::ReturnType

mainly by moving the code which extracts the type etc of an XSUB,
from the main loop into the parse() method of the new class.
It's not a direct cut+paste: the new code in parse() has been tidied up.
But it should be the same functionality.

Also add some tests.


  Commit: d724b5a4566c9243cabf28737d997ed61b429622
      
https://github.com/Perl/perl5/commit/d724b5a4566c9243cabf28737d997ed61b429622
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rename Node::Sig  Node::Params

Rename this this class:

    ExtUtils::ParseXS::Node::Sig

to this:

    ExtUtils::ParseXS::Node::Params

This class parses and stores the list of params within the parentheses
of an XSUB's signature. I will shortly be adding a Signature node class
which stores *all* of an XSUB's signature, including name, return type
etc.


  Commit: 5deff008124c673f2831157dfe1ab18941fca948
      
https://github.com/Perl/perl5/commit/5deff008124c673f2831157dfe1ab18941fca948
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rename Params->{sig_text} field

As a followup to the previous commit which renamed the Node::Sig class
to Node::Params, rename one of its fields from sig_text to params_text.

In addition, pass said text as a parameter to Node::Params->parse()
rather than setting it directly in the caller.


  Commit: b407e732ac72135bc5d3c94ca2cbce7f75e4fb86
      
https://github.com/Perl/perl5/commit/b407e732ac72135bc5d3c94ca2cbce7f75e4fb86
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: prepare sig parsing code for mv

Make the chunk of code in the main loop, which parses the start of an
XSUB, be in a suitable state to be moved to another file. In
particular:
    - make a couple of VMS-state lexicals be package vars
    - remove the type from a couple of lexicals
    - mover an unshift a couple of lines earlier
    - make a Warn call be a method call.

No functional changes


  Commit: 76cfd9dc0d5b0b69659b7685647a862cdeb1ee5c
      
https://github.com/Perl/perl5/commit/76cfd9dc0d5b0b69659b7685647a862cdeb1ee5c
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move sig-parsing code

Move the chunk of code which parses the declaration part of an XSUB
into Node.pm. It's temporarily  not yet a Node class, so this is just
a raw cut and paste.


  Commit: 4cc9af128acd613d5f37cd60204d1d6ad99d193e
      
https://github.com/Perl/perl5/commit/4cc9af128acd613d5f37cd60204d1d6ad99d193e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add xsub_decl Node

Add this class:

    ExtUtils::ParseXS::Node::xsub_decl

which processes the declaration part of an XSUB.

This commit mainly converts the code which was cut and paste out the
main loop by the previous commit, into a parse method - chiefly by doing
s/$self/$pxs/g.


  Commit: 85f2e71cd119051ea8028d7248b139c0c5f920f2
      
https://github.com/Perl/perl5/commit/85f2e71cd119051ea8028d7248b139c0c5f920f2
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reindent xsub_decl::parse()

whitespace-only


  Commit: b12cf0596dcd18ced98499b1c16d2ba5be1effb8
      
https://github.com/Perl/perl5/commit/b12cf0596dcd18ced98499b1c16d2ba5be1effb8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: remove redundant block

Remove the braces of a block which is no longer needed. When the block
was part of a 1000-line sub, it made sense to keep some lexical vars
within a smaller scope. It's now in a 100-line sub.


  Commit: 1522c502c13558da629f51eeabb539b756bfb99d
      
https://github.com/Perl/perl5/commit/1522c502c13558da629f51eeabb539b756bfb99d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add fields to xsub_decl Node

Add some fields to the newly-created ExtUtils::ParseXS::Node::xsub_decl
class. Currently the parse() method sets a bunch of $pxs->{xsub_foo}
values in the ExtUtils::ParseXS object. This commit adds local fields to
the Node::xsub_dec class and sets $self->{foo} to those same values
too.

For now, most code will continue to use the xsub_foo fields, but most of
those will be removed at some point in the future.

This commit also cleans up the code in parse() a bit, mainly by storing
values initially in lexical vars before saving them to the two sets of
object fields.


  Commit: 9b3514214af475310593f1021d730f2048996b47
      
https://github.com/Perl/perl5/commit/9b3514214af475310593f1021d730f2048996b47
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move some xsub_pdecl init stuff

During the last few commits which moved the XSUB declaration-parsing
code into a new Node::xsub_decl->parse() method, some per-xsub
initialisation code got moved with it. Move that code back up into the
main loop.

Shouldn't make any functional difference.


  Commit: 0777151212dc443f917cf9da77563525599defbf
      
https://github.com/Perl/perl5/commit/0777151212dc443f917cf9da77563525599defbf
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  parseXS: add tests for XSUB declaration errs

make sure that all the warnings/errors that can be emitted by
Node::xsub_decl->parse() have tests.


  Commit: a1ad2a3ddab88db46680fcad87b88c579d422d17
      
https://github.com/Perl/perl5/commit/a1ad2a3ddab88db46680fcad87b88c579d422d17
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  parseXS: refactor: delete whitespace lines Node.pm

During recent refactoring and reindenting, a bunch of blank lines ended
up with whitespace. Do s/^ +$//g.


  Commit: 352745ad4cea44c52efc73ca5eed7aef157f8f77
      
https://github.com/Perl/perl5/commit/352745ad4cea44c52efc73ca5eed7aef157f8f77
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor; fix a couple of comments


  Commit: 88d86f6ea85bb620190f915a4bda22d0e0159fba
      
https://github.com/Perl/perl5/commit/88d86f6ea85bb620190f915a4bda22d0e0159fba
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: prepare for xsub parsing move

Do some minor tweaks to the code which parses an XSUB at the top level,
in preparation for the next commit which will move that code to Node.pm.


  Commit: 70ab86158bb206967d2ee35c7a9d5553c92a8380
      
https://github.com/Perl/perl5/commit/70ab86158bb206967d2ee35c7a9d5553c92a8380
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: move xsub parse code to Node.pm

Move the big chunk of code in the main loop in ParseXS.pm which does the
top-level parsing of an XSUB into Node.pm

For now this is just a crude cut+paste  with no changes other than
s/next PARAGRAPH/return/. The next few commits will turn it into a
proper Node class.


  Commit: 84e4db40d57de464966c4cf1eb874cdeee21ef37
      
https://github.com/Perl/perl5/commit/84e4db40d57de464966c4cf1eb874cdeee21ef37
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  parseXS: refactor: add xsub Node class

Add this class:

    ExtUtils::ParseXS::Node::xsub

Thus isn't complete. Basically the code cut+parse from the main loop in
the previous commit has been turned into a parse() method, mainly via
lots of s/$self/$pxs/g. The parse() method is still doing both parsing
and code generation. The latter will be moved into as_code() shortly.


  Commit: 18f384792ecb69532d42c76c1a433df2cd38d70e
      
https://github.com/Perl/perl5/commit/18f384792ecb69532d42c76c1a433df2cd38d70e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reindent sub

Reindent Node::xsub->parse() after moving code from 2-indent ParseXS.pm
to 4-indent Node.pm

Whitespace-only


  Commit: 85c793c7eaf14435cb6e81ca94898b9681077b8f
      
https://github.com/Perl/perl5/commit/85c793c7eaf14435cb6e81ca94898b9681077b8f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add boot_code() in Node::xsub

Move the code which generates the "newXS(...)" boot code from the
parse() method into a new boot_code() method.

This is a straight cut+paste.


  Commit: 63537690733307e59a4b65f1c19f9c5b9f997ca5
      
https://github.com/Perl/perl5/commit/63537690733307e59a4b65f1c19f9c5b9f997ca5
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: boot_code(): remove block

Remove the { ...} surrounding most of the body of boot_code(), and
remove one level of indent.


  Commit: 19f0af6ae28447eba9a0cefafef2b765ab31d78b
      
https://github.com/Perl/perl5/commit/19f0af6ae28447eba9a0cefafef2b765ab31d78b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: make :boot_code() return val

Make the newly added/refactored Node::xsub::boot_code() method
return a list of C code strings, and leave it to the caller to push them
onto @{ $pxs->{bootcode_early}, rather than doing the pushing in the
sub itself.


  Commit: c9481ee5de72b18e622f7e8886eda56e9c52c3f4
      
https://github.com/Perl/perl5/commit/c9481ee5de72b18e622f7e8886eda56e9c52c3f4
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add decl field to Node::xsub

Don't immediately throw away the object holding the parsed xsub
declaration. Keep it in the tree.

Also clarify a code comment.


  Commit: 9866e3266b9d9f18d8084369ace6507e501042b0
      
https://github.com/Perl/perl5/commit/9866e3266b9d9f18d8084369ace6507e501042b0
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: add another CASE test

Test CASE with unconditional else.


  Commit: 9d87d60e22266e41a51ded86990c0cbd4d73ae0a
      
https://github.com/Perl/perl5/commit/9d87d60e22266e41a51ded86990c0cbd4d73ae0a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add CASE node type

Add this class:

    ExtUtils::ParseXS::Node::CASE;

This is the last Node subclass required to represent an entire XSUB as
an AST. It just requires some further refactoring of Node::xsub to be a
valid AST. (This commit actually comes in the middle of a series of
Node::xsub commits, as it was necessary for an xsub object to exist
first for CASE to work properly as a node.)

This commit also:

- makes the parse_keywords() method return a list of the nodes it has
  just created, rather than just a count. This makes accessing the
  just-created CASE node slightly easier. Can still be used as a
  boolean, which is all the return value has been used for up until
  now.

- removes the no-longer-need ParseXS object fields:
    xsub_CASE_condition
    xsub_CASE_condition_count

- removes the process_keywords() ParseXS method, as all keywords
  which it used to process are now processed by the parse_keywords()
  Node method.


  Commit: 8d106304b3069b275d0353403401dfb637039578
      
https://github.com/Perl/perl5/commit/8d106304b3069b275d0353403401dfb637039578
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: some tweaks to Node::xsub

Fix a couple of issues in the newly-added Node::xsub class. These
don't cause problems at the moment, but will, once parsing and
code-emitting for this class are separated out.

It was pushing the xbody as a kid of xsub node twice, and wasn't passing
the $pxs object to the (currently NOOP) as_code() method.
Also fix a thinko in a comment.


  Commit: 97cfe3acb615e6fdacf6a59a6c3555b914dffba7
      
https://github.com/Perl/perl5/commit/97cfe3acb615e6fdacf6a59a6c3555b914dffba7
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: add per-xbody Params objects

Before this commit, there was a *single* Params object,
$pxs->{xsub_params}, which contained two lists of Param objects.

The {orig_params} field contained a list of Param objects generated by
parsing the XSUB's signature.

The {params} field contained a second list of Param objects, which
started out as copy of the {orig_params}, but was then augmented by
parsing INPUT and OUTPUT sections.

When there was more than one CASE, the {params} Param objects would
be emptied out and their contents re-copied from {orig_params} at the
start of each new CASE. Note that the physical Param hashes remained the
same, they were  merely emptied, i.e. %$param = (), rather then being
freed.

Each Params object also held a {names} hash which mapped param names to
Param objects - this was why they weren't deleted but merely emptied: to
maintain the mapping across CASESs.

This commit reorganises this. Now there is:

- a Params object in the {xsub}{decl} object, which holds a list of
  Param objects containing just the data derived from parsing the
  signature, plus a {names} hash which maps names to *those* Param
  objects.

- a Params object per {xbody}, which holds a list of Param objects
  containing both the data derived from parsing the signature plus any
  extra INPUT/OUTPUT data parsed from just the xbody associated with the
  current CASE, plus a {names} hash which maps names to *those* Param
  objects.  $pxs->{xsub_params} points to this Params object, and is
  updated to point to a new object at the start of every xbody (i.e. per
  CASE).

This commit causes a couple of prototype-related tests in t/001-basic.t
to fail; they will be fixed by the next commit. In fact the following
few commits are updates to this commit, fixing up various bits of
fallout - mostly relating to accessing $pxs->{xsub_params} within
as_code() methods, whereas it's value is really only meaningful now
within parse() methods.

It's also intended that in a few commits' time, the Param class will be
split into two: Param and a IOParam subclass, with only the latter
having the extra fields related to INPUT and OUTPUT. In anticipation of
this, some vars etc in this commit have been called '$ioparam' rather
than '$param' etc.


  Commit: fbdaa4b8d4181786f73bb168d6f4b6c85be4a7b8
      
https://github.com/Perl/perl5/commit/fbdaa4b8d4181786f73bb168d6f4b6c85be4a7b8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: add warning about varying prototype chars

It's possible for a particular typemap entry to override the default
('$') prototype. It's also possible, in the presence of multiple CASEs,
for a parameter to have multiple types, and thus potentially differing
prototype chars. But there can be only one proto char per param per XSUB
(as passed in the newXS_foo(...) call).

This commit checks whether the prototype char is consistent across all
branches, and if not, warns.

This commit also fixes overridden prototype handling generally, after it
it got broken by the previous param-refactoring commit. Since the
previous commit, there is now a per-XSUB list of Params (derived from
the XSUB's declaration) plus a per-xsub-body list of Params (derived
from the declaration plus any INPUT/OUTPUT updates for this body). For
each xbody (i.e. per CASE), calculate the proto char of each param, and
store it in the per-xbody Param, but also copy that value back to the
per-XSUB Param (and warn if there's already a different value there).


  Commit: e7bf5a236829b5c3263d219aaa394f0cc25c7676
      
https://github.com/Perl/perl5/commit/e7bf5a236829b5c3263d219aaa394f0cc25c7676
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: ensure C_ARGS per CASE

Ensure that the value of C_ARGS is stored per-CASE, at parse() time.
This is so that when shortly the parsing and code-emitting of an XSUB
is split into separate phases, the args to the generated autocall
function are correct per-CASE, rather than all cases having the final
value.


  Commit: f7be7e354215aabf3fe22bede08c7da0456cf60f
      
https://github.com/Perl/perl5/commit/f7be7e354215aabf3fe22bede08c7da0456cf60f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: pass xbody to foo_part::as_code

Pass the current Node::xbody object as an extra parameter to the various
foo_part::as_code() methods. The next few commits will make use of it.

Also, in one particular loop, use the full name of the foo_part classes
for easier searching in the src code (searching for "input_part" wasn't
finding where an object of that class was being created).


  Commit: 9b984417aa8b9ad69e9b86279171e1bfa0031eea
      
https://github.com/Perl/perl5/commit/9b984417aa8b9ad69e9b86279171e1bfa0031eea
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: avoid xsub_params in _part code

In the input_part->as_code() and output_part->as_code() methods,
avoid using the $pxs->{xsub_params} value. Once parsing and
code-emitting are fully split, that value will no longer be valid
during code emitting.

Add a few tests too.


  Commit: 19b43dbf3d593102f758634f6436959dd290c73a
      
https://github.com/Perl/perl5/commit/19b43dbf3d593102f758634f6436959dd290c73a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: give error on unmatched length(foo)

In this form of XSUB:

    foo(char *s, int length(s))

if the length pseudo-parameter's name didn't match another parameter,
e.g.

    foo(int length(s))

then it would quietly generate bad C code. This commit makes it produce
an error instead:

    Error: length() on non-parameter 's'

It does this by adding a new field, 'has_length' on Param objects,
which is set by a quick scan of all params just after the XSUB's
signature has been parsed.

This also removes one more "runtime" usage of the $pxs->{xsub_params}
value in an as_code() method.


  Commit: 693690d6e94f9f8f816b3e5d7bd98c9567e2346a
      
https://github.com/Perl/perl5/commit/693690d6e94f9f8f816b3e5d7bd98c9567e2346a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add cur_xbody, rm xsub_params

Add a new field, cur_xbody, to the ParseXS class. This tracks
the current Node::xbody object during parsing (an XSUB can have multiple
bodies, one per CASE).

Then remove the field xsub_params from the ParseXS class. This can now
be derived as $pxs->{cur_xbody}{ioparams}.


  Commit: efbae92910f6c2eb70242e2d2019cb959ead0450
      
https://github.com/Perl/perl5/commit/efbae92910f6c2eb70242e2d2019cb959ead0450
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: split xsub parse() method

Move the code-emitting actions of the recently-created
Node::xsub:parse() method into a separate as_code() method.

This means that *all* the parsing actions for an XSUB take place before
any code-emitting. This is a major milestone in this branch, which has
been moving towards creating an AST, and *then* walking it to emit code.

This commit actually introduces a lot of subtle bugs when there is more
than one CASE in an XSUB. These will be fixed in the following commits.
In particular, one test now fails; this has been temporarily disabled.

The issue is that much parsing state is stored as 'global' state in the
xsub_foo fields within a ParseXS object. These fields tend to get
initialised at the start of each CASE, then get set to values and are
used to to emit code, during the parsing of that CASE. The field's value
thus might be different for each CASE.

Now, the parsing for *all* CASEs is done before code emitting, so those
field values which are used to determine how to emit code, now all have
values relevant to the *last* CASE, but are then used to emit the code
for *all* CASES.

The follow-up commits to this commit will remove all those 'global'
fields and replace them with similar fields within the relevant Node
classes. This ensures that there will be such values in separate nodes
for *each* CASE, so each branch gets its own state.


  Commit: 21a697b5ef9d91814365d46887fae5ec019a4e37
      
https://github.com/Perl/perl5/commit/21a697b5ef9d91814365d46887fae5ec019a4e37
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: pass xsub obj to as_code meths

Currently, calls to as_code() methods in middle-level nodes of the AST
pass the current Node::xbody node as an extra argument.

This commit makes the current Node::xsub object also be passed. This
helps lower-level nodes access state held in a higher part of the tree.

Note that there is one xsub node per XSUB, plus at least one xbody child
- or multiple xbody children in the presence of CASE keywords.


  Commit: 58f5bf57acf05e1f1ed676f712a2c2cf233cfd6e
      
https://github.com/Perl/perl5/commit/58f5bf57acf05e1f1ed676f712a2c2cf233cfd6e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_targ_declared_early

Remove the field 'xsub_targ_declared_early' from the ParseXS class,
and instead add a 'use_early_targ' field to the ReturnType Node class.

This is the first in a series of commits which will remove many of the
'global' parse state fields from the ParseXS object and instead add them
as fields of the relevant Node objects.


  Commit: 66410ce6ea90356b02a5c7a0b6991348b0e88abb
      
https://github.com/Perl/perl5/commit/66410ce6ea90356b02a5c7a0b6991348b0e88abb
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: remove xsub_targ_used

Remove the field 'xsub_targ_used' from the ParseXS class,
and instead add a 'targ_used' field to the xbody Node class.

This allows a TARG to be declared and used within *every* CASE (i.e.
xbody) of an XSUB. This fixes a bug which was introduced a couple of
commits ago when the xsub node's parsing and code-emitting actions were
split into separate subs and no longer interleaved.

Accordingly, a test which was temporarily disabled then is now
re-enabled.


  Commit: 14d25ad857a04162fa0e7c1b745d28d48b300ee4
      
https://github.com/Perl/perl5/commit/14d25ad857a04162fa0e7c1b745d28d48b300ee4
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: tidy up some code comments

Update some code comments following recent refactoring.


  Commit: 685e46b92632aa9e4dd973880b65cc3dd31845a5
      
https://github.com/Perl/perl5/commit/685e46b92632aa9e4dd973880b65cc3dd31845a5
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: re-add SCOPE dup err message

Refactoring earlier in this branch accidentally deleted the check
for duplicate SCOPE: entries in the same XSUB.

This commit restores the check (with a slightly better error message),
makes it a blurt() rather than death(), and adds a test for the error
message.


  Commit: fbabbf92918abdcdf3e8de8a9dffa9a619d901a0
      
https://github.com/Perl/perl5/commit/fbabbf92918abdcdf3e8de8a9dffa9a619d901a0
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Eval.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: remove xsub_seen_ALIAS

Remove the xsub_seen_ALIAS field of the ExtUtils::ParseXS class and
instead add a seen_ALIAS field to the ExtUtils::ParseXS::Node::xsub
class.

Set this field from within ALIAS::parse(), rather than peeking ahead
by grepping through the unprocessed lines of the current XSUB looking
for /ALIAS:/.

This is part of a process of moving per-XSUB state into the relevant
nodes of the AST.

This particular change was made slightly more complex due to the fact
that typemap evals set an $ALIAS variable if the XSUB contains aliases -
this is typically used by typemap entries to decide how to identify the
name of the function when croaking. So this commit makes sure the value
is still passed to eval, and adds a test.


  Commit: 54b32d10fcc2d46fcfb0ef7daa6c390a373b3595
      
https://github.com/Perl/perl5/commit/54b32d10fcc2d46fcfb0ef7daa6c390a373b3595
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: remove various xsub_seen_FOO

Remove the following fields from the ExtUtils::ParseXS class:

    xsub_seen_PPCODE
    xsub_seen_INTERFACE
    xsub_seen_PROTOTYPE
    xsub_seen_SCOPE
    xsub_seen_INTERFACE_or_MACRO

and replace them with these new fields in the
ExtUtils::ParseXS::Node::xsub class:

    seen_INTERFACE
    seen_INTERFACE_MACRO
    seen_PPCODE
    seen_PROTOTYPE
    seen_SCOPE

Note that the combined flag xsub_seen_INTERFACE_or_MACRO has been
replaced with a flag which indicates the presence of just a
INTERFACE_MACRO keyword, rather than that *or* INTERFACE. Where the old
flag was tested, we now test for two flags (seen_I *or* seen_I_M).

This commit also adds a few tests for some of the unloved keywords being
flagged.


  Commit: 1e5d04259a61091e16ef436aedf7cb71354bd4db
      
https://github.com/Perl/perl5/commit/1e5d04259a61091e16ef436aedf7cb71354bd4db
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: remove xsub_seen_RETVAL_in_CODE

Remove the following field from the ExtUtils::ParseXS class:

    xsub_seen_RETVAL_in_CODE

and replace it with this new field in the ExtUtils::ParseXS::Node::xbody
class:

    seen_RETVAL_in_CODE

Note that the previous commit did similar things, but for fields added
to the Node::xsub class. This flag is per-CASE, so goes in Node::xbody
instead. Also add a test for multiple CASEs.


  Commit: 324cbcabc2facdd0bb5504a69e6640e32a6a4ec8
      
https://github.com/Perl/perl5/commit/324cbcabc2facdd0bb5504a69e6640e32a6a4ec8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: rm xsub_FOO's for return and fix CASE

Remove these fields from the ExtUtils::ParseXS class which relate to
returning SVs from the XSUB call:

    xsub_seen_CODE
    xsub_XSRETURN_count

and replace them with these new fields in the
ExtUtils::ParseXS::Node::xsub class:

    CODE_sets_ST0
    XSRETURN_count_basic
    XSRETURN_count_extra

As well as being part of a series of commits which are moving state into
the AST, this commit in particular also changes how the N is calculated
for EXTEND(SP,N) and XSRETURN(N). As well as the code being cleaner now,
it fixes a number of bugs related to multiple CASEs and OUTLIST
variables. For each branch, the number of OUTLIST variables used to get
added to the running total, so the later EXTEND()s and final XSRETURN()
would have a count too large, and the ST(N) numbers could be wrong.
Tests have been added for these cases.

This commit also has a slight change of behaviour in a hacky edge case.
XSUB's declared void but which have something like 'ST(0) = ...' in
their body cause XSRETURN(1) to be emitted whereas normally the 'void'
would imply 'XSRETURN_EMPTY'. This was a hack put into place around 1996
to accommodate code which had been following a poor coding style
recommendation in the then-docs.

Prior to this commit, early on in the parsing of an XSUB, it would peek
ahead and see if there is a 'CODE:' keyword, and if so would peek ahead
again and look for 'ST(0) = ...' and similar in *any* of the as-yet
unparsed lines of the current XSUB.  After this commit, it now looks
for such assigns *only* in the text of a CODE: body.

Either approach can be argued to be right or wrong: for example, perhaps
a POSTCALL block is doing the naughty assign. But if so, and there's no
CODE: block too, then previously it wouldn't have been spotted either. At
least the new approach is consistent.


  Commit: 0d12ffb2283e675699e21e53a7a5b1e73c0be506
      
https://github.com/Perl/perl5/commit/0d12ffb2283e675699e21e53a7a5b1e73c0be506
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: cosmetic: change SCOPE indent

For an XSUB which has 'SCOPE: ENABLE', an extra

    ENTER:
    {

and

    LEAVE:
    }

are added to the generated C code. These used to have a 3-indent; this
commit changes them to a 6-indent. They are added where there's
currently a transition between a 4- and 8-indent, so 6 makes more sense.


  Commit: ceb48740932dad930ad0a01e6e076b27265e609a
      
https://github.com/Perl/perl5/commit/ceb48740932dad930ad0a01e6e076b27265e609a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: use $open/close_brace more

the Q() quoting method converts [[ into { and ]] into }, but it's
not obvious, so I added $open_brace and $close_brace lexicals to make
it more obvious. This commit uses them in the couple of places in
Node.pm which I missed earlier.


  Commit: 261c2a8101f8cd82ad57a693a153dd28c67bfaac
      
https://github.com/Perl/perl5/commit/261c2a8101f8cd82ad57a693a153dd28c67bfaac
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm return-type xsub_foo fields

Remove these fields from the ExtUtils::ParseXS class:

    xsub_return_type
    xsub_seen_extern_C
    xsub_seen_NO_OUTPUT
    xsub_seen_static

and instead use the analogous fields of the Node::ReturnType class.


  Commit: b0bb121100f3cf5b473c2a0dd67bf272c00c047b
      
https://github.com/Perl/perl5/commit/b0bb121100f3cf5b473c2a0dd67bf272c00c047b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: add seen_an_XSUB EU::PXS field

Add a new field to the ExtUtils::ParseXS class:

    seen_an_XSUB

(this bucks the trend of recent commits which have been *removing* fields
from that class).

The code currently uses the field 'xsub_func_full_C_name' being defined
to indicate that at least one XSUB has been parsed. That field is going
away shortly, so so add a different field just for that one explicit
purpose.


  Commit: 6404deb9352f02066fe12f4c9d158060a2737048
      
https://github.com/Perl/perl5/commit/6404deb9352f02066fe12f4c9d158060a2737048
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Eval.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm fn name/class xsub_FOO's

Remove these fields from the ExtUtils::ParseXS class which relate to
storing the XSUB's class and name in various formats:

    xsub_class
    xsub_func_name
    xsub_func_full_perl_name
    xsub_func_full_C_name

and instead use the analogous fields of the Node::decl class


  Commit: 70cc7a213027525d9171cc5880053a2680f6638a
      
https://github.com/Perl/perl5/commit/70cc7a213027525d9171cc5880053a2680f6638a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_implicit_OUTPUT_RETVAL

Remove the following field from the ExtUtils::ParseXS class:

    xsub_implicit_OUTPUT_RETVAL

and replace it with this new field in the ExtUtils::ParseXS::Node::xbody
class:

    seen_autocall

Basically there is some logic which says that a bodiless (i.e. autocall)
XSUB has an implicit 'OUTPUT: RETVAL' - i.e. return RETVAL even though
it hasn't explicitly been requested. This commit moves the logic
to the point where is RETVAL is emitted, and earlier just notes that an
autocall is present.

This commit also fixes a bug introduced by the earlier refactoring in
this branch which split out parsing and code emitting. When an XSUB has
two or more CASEs, the xbody's weren't treated independently - so the
behaviour of all CASE branches was determined by the state of the last
branch. With seen_autocall being set per xbody, the corrrect behaviour is
now restored. This commit adds a couple of tests to confirm this.


  Commit: bd5b89d3a43211fa5560b1ce58bbe7cbb5e8415f
      
https://github.com/Perl/perl5/commit/bd5b89d3a43211fa5560b1ce58bbe7cbb5e8415f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: fix alias/attr cv, add need_boot_cv field

Add a new field to the ExtUtils::ParseXS class:

    need_boot_cv

and remove the

    seen_INTERFACE_or_MACRO

field.

The boot XSUB emitted by the XS parser will sometimes declare a 'cv'
variable within a narrow scope when it knows that part of the boot code
will need it, e.g. for:

        cv = newXS_deffile("Foo::foo", XS_Foo_foo);
        apply_attrs_string("Foo", cv, "x y", 0);

Previously it would guess whether to to emit '{ CV *cv; ... }' based on
flags indicating the presence of various keywords which were known to
generate such code. This commit changes it so that instead, it sets a
new flag, 'need_boot_cv', any time code is generated which uses 'cv'.
This seems more logical to me. It also allows us to remove the flag
indicating that INTERFACE: or INTERFACE_MACRO: was seen, since the only
remaining use of that flag was for cv-emitting.

This commit also fixes a bug whereby the cv declaration wasn't being
emitted for the ALIAS and ATTR keywords (even though it uses it to call
e.g. apply_attrs_string() as shown above). This was in fact *fairly*
harmless, since the boot XSUB has a cv parameter anyway (the CV of the
BOOT sub), and as long as nothing in the boot XSUB needs the original
value held in cv, no harm was done.

In the case of ALIAS, it checked for the existence of
$pxs->{xsub_map_alias_name_to_value} as an indication of the presence
of ALIAS, that field is undeffed after each each XSUB has been parsed.

In the case of ATTR, I don't think it ever added cv..


  Commit: 308c5192cf46595f0fcfa03c539ac0b6af6b6b3a
      
https://github.com/Perl/perl5/commit/308c5192cf46595f0fcfa03c539ac0b6af6b6b3a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm various xsub_*alias* fields

Remove the following fields from the ExtUtils::ParseXS class:

    xsub_map_alias_name_to_value
    xsub_map_alias_value_to_name_seen_hash
    xsub_alias_clash_hinted

and replace them with these new fields in the
ExtUtils::ParseXS::Node::xsub class:

    map_alias_name_to_value
    map_alias_value_to_name_seen_hash
    alias_clash_hinted


  Commit: bd0f043e95526c48942f06edfe43898914f0990f
      
https://github.com/Perl/perl5/commit/bd0f043e95526c48942f06edfe43898914f0990f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_map_interface_foo field

Remove the following field from the ExtUtils::ParseXS class:

    xsub_map_interface_name_short_to_original

and replace it with this new field in the
ExtUtils::ParseXS::Node::xsub class:

    map_interface_name_short_to_original

In addition, remove the 'map_short_orig' field from the Node::INTERFACE
class - that was added by me earlier in this branch (initially unused)
with the intent to become what 'map_interface_name_short_to_original' is
now, but it turned out not to be suitable for this purpose, as the
latter can accumulate data over multiple INTERFACE keywords.


  Commit: 89ad7a1bc721f7e5a72e894c150dc682d04b066f
      
https://github.com/Perl/perl5/commit/89ad7a1bc721f7e5a72e894c150dc682d04b066f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_attributes field

Remove the following field from the ExtUtils::ParseXS class:

    xsub_attributes

and replace it with this new field in the
ExtUtils::ParseXS::Node::xsub class:

    attributes


  Commit: c933ea6dec23b461464f93fb289fd53caab61d06
      
https://github.com/Perl/perl5/commit/c933ea6dec23b461464f93fb289fd53caab61d06
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: tweak some code comments and indents

Make small tweaks to some of my recent work.


  Commit: 765b04d7b832da4ad9b4a76c0d55b552b21877f6
      
https://github.com/Perl/perl5/commit/765b04d7b832da4ad9b4a76c0d55b552b21877f6
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: make OUTPUT: SETMAGIC per-CASE

In code like:

    int
    foo(int a, int b)
        CASE: X
            OUTPUT:
                a
                SETMAGIC: DISABLE
                b
        CASE: Y
            OUTPUT:
                a
                SETMAGIC: DISABLE
                b

when the caller's two args are updated with the final values of a and b,
the first CASE calls SvSETMAGIC() after updating ST(0), but not after
updating ST(1).  This is as expected.

However in the second CASE, the current setting of SETMAGIC (i.e
disabled) from the first CASE is passed on and "inherited' by the second
CASE: so in the second branch, magic isn't called on ST(0).

This commit fixes that (i.e. calls SvSETMAGIC on ST(0) in the second
CASE) by making the current SETMAGIC state per-xbody rather than
per-xsub.

This commit achieves that by:

Remove the following field from the ExtUtils::ParseXS class:

    xsub_SETMAGIC_state

and replace it with this new field in the
ExtUtils::ParseXS::Node::xbody class:

    OUTPUT_SETMAGIC_state

and adds 4 tests (the latter two of which failed before this commit).


  Commit: 288da2da06dd45ccb820cb5658cf03ba4e9606b1
      
https://github.com/Perl/perl5/commit/288da2da06dd45ccb820cb5658cf03ba4e9606b1
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_deferred_code_lines

Remove the following field from the ExtUtils::ParseXS class:

    xsub_deferred_code_lines

and replace it with this new field in the
ExtUtils::ParseXS::Node::input_part class:

    deferred_code_lines

This field contains initialisation lines which have been deferred
to after any declarations emitted by INPUT and/or PREINIT lines.
As such, it can be local to just the code generation phase (i.e. calling
as_code()) during processing the input part of the xbody of an xsub -
so store the field in the input_part node.

Also, add input_part, init_part etc fields to the Node::xbody object.
These are aliases to make access to its children easier - i.e. these
were all already accessible as $xbody->{kids}{N}, but are now
accessible as, e.g. $xbody->{input_part} too.


  Commit: 72fc64a9396552e9a9d23f045627ffcb82aa676f
      
https://github.com/Perl/perl5/commit/72fc64a9396552e9a9d23f045627ffcb82aa676f
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: reduce scope of targ_used field

Move this field from Node::xbody to Node::output_part, as it's only
used while generating the code for the output part of the xsub.

No functional change.


  Commit: d308837c7642026ea843e9364f55886b853107b8
      
https://github.com/Perl/perl5/commit/d308837c7642026ea843e9364f55886b853107b8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_stack_was_reset field

Remove the following field from the ExtUtils::ParseXS class:

    xsub_stack_was_reset

and replace it with this new field in the
ExtUtils::ParseXS::Node::output_part class:

    stack_was_reset


  Commit: 0e253e5bb57aaf51e77de7d4bcc4a2a2fc3a42e2
      
https://github.com/Perl/perl5/commit/0e253e5bb57aaf51e77de7d4bcc4a2a2fc3a42e2
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rm xsub_interface_macro fields

Remove the following fields from the ExtUtils::ParseXS class:

    xsub_interface_macro
    xsub_interface_macro_set

and replace them with these new fields in the
ExtUtils::ParseXS::Node::xsub class:

    interface_macro
    interface_macro_set

There is also a slight change in the way these two fields are used.
Formerly they were initialised to the default values "XSINTERFACE_FUNC"
and "XSINTERFACE_FUNC_SET", then potentially changed by the
INTERFACE_MACRO keyword, then the current values were used to emit the
interface function pointer getting and setting code.

Now, the values are initially undef, and the emitting code checks for
defined-ness and if so uses the default value. This means that the logic
for using default or overridden value is local to where that value is
used rather than being hidden away elsewhere.No change in functionality
though.


  Commit: 23afacdff4f4af6a0d927ee8f16a2afda5d770bd
      
https://github.com/Perl/perl5/commit/23afacdff4f4af6a0d927ee8f16a2afda5d770bd
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: remove misc xsub_foo fields

Remove the following fields from the ExtUtils::ParseXS class:

    xsub_map_overload_name_to_seen
    xsub_prototype

and replace them with these new fields in the
ExtUtils::ParseXS::Node::xsub class:

    overload_name_seen
    prototype


  Commit: 1a928b362b98c6992f4907bb3f7fe5c89df41e4a
      
https://github.com/Perl/perl5/commit/1a928b362b98c6992f4907bb3f7fe5c89df41e4a
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: sort out SCOPE object fields

This commit renames the ExtUtils::ParseXS class field

    xsub_SCOPE_enabled
to
    file_SCOPE_enabled

and adds a new field in the ExtUtils::ParseXS::Node::xsub class:

    SCOPE_enabled

This is because SCOPE can be used either in file scope:

    SCOPE: ENABLE
    int
    foo(...)

or in XSUB scope,

    int
    foo(...)
        SCOPE: ENABLE

The file_SCOPE_enabled field records whether a SCOPE keyword has been
encountered just before the XSUB, while the Node::xsub  SCOPE_enabled
field is initialised to the current value of file_SCOPE_enabled when
XSUB parsing starts, and is updated if the SCOPE keyword is encountered
within the XSUB.


  Commit: 9d3d5b5a1650d7f7ec7d9609a83dae72cfc7cf77
      
https://github.com/Perl/perl5/commit/9d3d5b5a1650d7f7ec7d9609a83dae72cfc7cf77
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: avoid cur_xsub/xbody in as_code

During the course of the refactoring in this branch, perl code has
gradually been split between doing parsing in Node::FOO::parse() methods
and code emitting in Node::FOO::as_code() methods (before, both were
completely interleaved).

How the current xsub and xbody nodes are tracked varies between those
two types of methods: the as_code() methods pass them as explicit
parameters, while the parse() methods rely on two 'global' fields
within the ExtUtils::ParseXS object, cur_xsub and cur_xbody.

However, some some as_code() methods were still relying on
cur_xsub/xbody rather than the passed $xsub and $xbody params. This
commit fixes that. At the moment it is mostly harmless, as each XSUB's
top_level as_code() is called immediately after it's top-level parse(),
so cur_xsub still points to the right XSUB. But that will change in
future, so get it right now. The next commit will in fact explicitly
undef cur_xsub/xbody immediately after parsing is finished.

This commit includes a test for one edge case where the cur_xbody being
wrong did make a difference.


  Commit: 6700da40e79cb549693336a4d573824da28faaf2
      
https://github.com/Perl/perl5/commit/6700da40e79cb549693336a4d573824da28faaf2
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: undef cur_xsub/xbody after use

Currently, the fields cur_xsub and cur_xbody of ExtUtils::ParseXS track
the current xsub and body nodes during parsing. This commit undefs them
immediately after use so that they can't be inadvertently used
elsewhere. The fixups in the previous commit were all discovered
by this undeffing.


  Commit: 6bcce5e00942921c372d57743b498a763b620c81
      
https://github.com/Perl/perl5/commit/6bcce5e00942921c372d57743b498a763b620c81
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: remove cur_xsub/xbody fields

Currently all the Node::FOO::as_code() methods get passed two args,
$xsub and xbody, to indicate the current Node::xsub and Node::xbody
objects.

Conversely, all the Node::FOO::parse() methods access the current two
objects via two 'global' fields in the ExtUtils:;ParseXS object:

    cur_xsub
    cur_xbody

This commit deletes these two fields and instead passes the objects as
extra parameters to all the parse() methods. Less action-at-a-distance.


  Commit: 06d618e0ccbf9e3ee1d1bd331537e9b884f56075
      
https://github.com/Perl/perl5/commit/06d618e0ccbf9e3ee1d1bd331537e9b884f56075
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: tweak some code comments

Add comments about keywords which can be both inside or outside an XSUB.


  Commit: f88d94abf7c220c07029941e5a2c41a2b72ee7f5
      
https://github.com/Perl/perl5/commit/f88d94abf7c220c07029941e5a2c41a2b72ee7f5
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: delete param field from Params

The Node::Params class has a 'params' field which holds a list of
Node::Param objects. This class was one of the first Node classes to be
created during my recent refactoring work, and at the time, Node
subclasses didn't have a generic 'kids' field. They do now, so just
store the list of Param objects of 'kids' of the Params object.


  Commit: 669b19baa6f79a5898c3740f9504fadbf833d558
      
https://github.com/Perl/perl5/commit/669b19baa6f79a5898c3740f9504fadbf833d558
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add Node:IO_Param class

Add a ExtUtils::ParseXS::Node::IO_Param class as a subclass of the
existing ExtUtils::ParseXS::Node::Param class.

Then Param objects will be used solely to hold the details of a
parameter which have been extracted from an XSUB's signature, while
IO_Param objects contain a copy of that info, but augmented with any
further info gleaned from INPUT or OUTPUT lines. For example with

    void
    foo(a)
        int a
        OUTPUT:
            a

Then the Param object for 'a' will look something like:

   {
     arg_num => 1
     var     => 'a',
   }

while the corresponding IO_Param object will look something like:

   {
     arg_num   => 1,
     var       => 'a',
     type      => 'int',
     in_input  => 1,
     in_output => 1,
     ....
   }

All the code-emitting methods have been moved from Param to IO_Param,
and the as_code() method has been renamed to as_input_code(), to better
match the naming convention of the existing as_output_code() method:
an IO_Param can generate code both to declare/initialise a var, and to
update/return a var.


  Commit: b11bfb7e060a656277b6cb8a98e41cbfea9a8f2b
      
https://github.com/Perl/perl5/commit/b11bfb7e060a656277b6cb8a98e41cbfea9a8f2b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: set default alias at parse time

If the list of aliases for an XSUB doesn't include the XSUB's main name,
an extra alias entry is added, mapping the main name to ix 0.

Move this setting from the code generation phase to the end of the
parsing phase, because the AST should really be complete by the end of
parsing.

Also add a test for this behaviour.

Shouldn't affect hat code is generated.


  Commit: 76e99d9f1deb7258e1e8273ed460618c0d389bad
      
https://github.com/Perl/perl5/commit/76e99d9f1deb7258e1e8273ed460618c0d389bad
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

  Log Message:
  -----------
  ParseXS: refactor: remove print_section()

This method is no longer used anywhere


  Commit: 9514ad1ef738cad02823822d0649697f2f46bd33
      
https://github.com/Perl/perl5/commit/9514ad1ef738cad02823822d0649697f2f46bd33
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: turn param parsing into a sub

Currently the parsing of an XSUB's signature, and the parsing of
the individual comma-separated items within that signature, are done in
the same function, Params->parse(). This commit is the first of three
which will extract out the latter into a separate Param->parse() method.

For now, the per-param code is kept in-place (to make the diff easier to
understand), but is wrapped within an immediately-called anon sub, in
preparation to be moved.

So before, the code was (very simplified):

    for (split /,/, $params_text) {
        ... parse type, name, init etc ...
        next if can't parse;
        my $param = Param->new(var = $var, type => $type, ...);
        push @{$params->{kids}}, $param;
    }

After this commit, it looks more like:

    for (split /,/, $params_text) {
        my $param = Param->new();
        sub {
            my $param = shift;
            ...
            ... parse type, name, init etc ...
            return if can't parse;
            $param->{var} = $var; ...
            return 1;
        }->{$param, ...)
            or next;

        push @{$params->{kids}}, $param;
    }

Note that the inner sub leaves pushing the new param, updating the names
hash and setting the arg_num to the caller.

In theory there are no functional changes, except that when a synthetic
RETVAL is being kept (but its position within kids moved), we now keep
the Param hash and update its contents, rather than replace it with a new
hash. This shouldn't make any difference.


  Commit: 6b7167819fe6b975036ec94d69bef43cb8ec2b5d
      
https://github.com/Perl/perl5/commit/6b7167819fe6b975036ec94d69bef43cb8ec2b5d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add Param->parse() method.

This commit just moves a block of code of the form sub {...}->()
into its own named sub. There are no changes to the moved lines of code
apart from indentation.

This is the second of three commits to create the parse() method.
The next commit will do any final tidying up.


  Commit: c20945f92d9daa80477cb65421f4c6cde03bb96e
      
https://github.com/Perl/perl5/commit/c20945f92d9daa80477cb65421f4c6cde03bb96e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: clean-up Param->parse() method

This is the third of three commits to create the parse() method.
Mainly do s/$param/$self/g, and add a call to set file/line number foer
the object.


  Commit: f051302bcb10aae09c063a5fd542b19a4547b750
      
https://github.com/Perl/perl5/commit/f051302bcb10aae09c063a5fd542b19a4547b750
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: IO_Param::lookup_input_typemap

Move all the code out of

ExtUtils::ParseXS::Node::IO_Param::as_input_code()

which is responsible for looking up the template initialisation code in
the typemap (or elsewhere) and put it in it's own method,
lookup_input_typemap().

As well as splitting a 300-line method into two approx 150-line methods,
this will also allow us shortly to move the template lookup to earlier,
at parse time rather than code-emitting time.

Also add some more tests for the length(foo) pseudo-parameter, which I
broke while working on this commit, and then noticed it was under-tested.


  Commit: a4ef2a4cb7e57ff12fdcd1ac2c462a07bda0f583
      
https://github.com/Perl/perl5/commit/a4ef2a4cb7e57ff12fdcd1ac2c462a07bda0f583
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: IO_Param::lookup_output_typemap

Move all the code out of

ExtUtils::ParseXS::Node::IO_Param::as_output_code()

which is responsible for looking up the template output code in the
typemap (or elsewhere) and put it in it's own method,
lookup_output_typemap().

As well as splitting a 490-line method into two 200 and 340-line methods,
this will also allow us shortly to move the template lookup to earlier,
at parse time rather than code-emitting time.

It may also be possible at some point to merge the two methods added by
these last two commits, lookup_intput_typemap and lookup_output_typemap,
into a single method, since they share a lot of common code.


  Commit: ec74ddd6aadba9ead8aa0147843852d593fc3729
      
https://github.com/Perl/perl5/commit/ec74ddd6aadba9ead8aa0147843852d593fc3729
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: refactor: set XSRETURN_count_* earlier

Previously these two values were set at the end of parsing an XSUB:

    XSRETURN_count_basic
    XSRETURN_count_extra

They represent whether a RETVAL SV will be returned by the XSUB, and
how many extra SVs are returned due to parameters declared as OUTLIST.

This commit sets them earlier, as in particular, the next commit will
need to access XSRETURN_count_basic earlier.

XSRETURN_count_extra is now set right after parsing the XSUB's
declaration, as its value can't change after then.

XSRETURN_count_basic is now set after parsing the output part of the
each body of the XSUB (an XSUB can have a body per CASE). Its value
*aught* to be consistent across all bodies, but it's possible for the
CODE_sets_ST0 hack (which looks for code like like 'ST(0) = ...' in any
CODE: block) to vary across bodies; so this commit also adds a new
warning and test for that.


  Commit: 534703019e7050d5258f1d8a02d8dc9dc00acaa5
      
https://github.com/Perl/perl5/commit/534703019e7050d5258f1d8a02d8dc9dc00acaa5
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: lookup typemaps at parse time

The last few commits have moved the looking-up and processing of
typemap entries (but not the evalling) for parameters from
Param::as_input_code() and Param::as_output_code() into their
own subs, lookup_input_typemap() and lookup_output_typemap().

This commit takes that one step further, and makes those new subs be
called at parse time, rather than at code-generation time.
This is needed because in principle, XSUB ASTs should be completely
self-contained, and the code they emit shouldn't vary depending on when
their top-level as_code() methods are called. But via the

    TYPEMAP: <<EOF

mechanism, its possible for the typemap to change between XSUBs.

This commit does this in a very crude way. Formerly, at code-emitting
time, as_input_code() etc would do:

    my ($foo, $bar, ...) = lookup_input_typemap(...);

Now, the parsing code does

    $self->{input_typemap_vals} = [ lookup_input_typemap(...) ];

and as_input_code() etc does:

    my ($foo, $bar, ...) = @{$self->{input_typemap_vals}};

Note that there are both output_typemap_vals and
output_typemap_vals_outlist fields, as it's possible for the same
parameter to be used both for updating the original arg (OUTPUT) and for
returning the current value as a new SV (OUTLIST). So potentially we
save the results of *two* calls to lookup_output_typemap() for each
parameter.


  Commit: e7eafae96a651229e7057d690dedbfd5370bc120
      
https://github.com/Perl/perl5/commit/e7eafae96a651229e7057d690dedbfd5370bc120
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-23 (Wed, 23 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
    M dist/ExtUtils-ParseXS/t/001-basic.t

  Log Message:
  -----------
  ParseXS: clean up error messages and tests

Rationalise warning and error messages which appear in Node.pm:

- always prefix with Warning: / Error: / Internal error:
- lower-case the first letter following Error: etc
- fix grammar
- ensure full test coverage (except 'Internal error', which
  shouldn't be reproducible).


  Commit: bcb52afc1fb92c15eaa02b164ffffbbe18441571
      
https://github.com/Perl/perl5/commit/bcb52afc1fb92c15eaa02b164ffffbbe18441571
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: always store kid nodes in kids

Some node types have fields to point to particular children. Make these
kids also be in the generic @{$self->{kids}} array.

That way, hypothetical generic tree-walking code will be able to access
the whole tree just by following @{$self->{kids}}, without needing to
know for example that the xsub_decl Node type has a child pointed to by
$self->{return_type}.


  Commit: d2513afc9ebcce00d2122304c03dfc86493048bf
      
https://github.com/Perl/perl5/commit/d2513afc9ebcce00d2122304c03dfc86493048bf
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: tidy up Node.pm

Do a general tidy-up of this src file: white space, plus wrap long lines
and strings.


  Commit: a9bd1a1182dc84d3a891f4f6fa9454f2621e07b5
      
https://github.com/Perl/perl5/commit/a9bd1a1182dc84d3a891f4f6fa9454f2621e07b5
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: give $build_subclass parent arg

For aesthetic reasons, give the $build_subclass sub an extra first arg
which must be the string 'parent'. Then change invocations from:

    BEGIN { $build_subclass->('Foo', # parent
        'field1', # ...
        ...
    }

to
    BEGIN { $build_subclass->(parent => 'Foo',
        'field1', # ...
        ...
    }


  Commit: 4855002a44c34224bf5abf607abb9c38930adc4b
      
https://github.com/Perl/perl5/commit/4855002a44c34224bf5abf607abb9c38930adc4b
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: fixup some code comments


  Commit: d71ad706e21fea47e131cdf950f3a3ced25d00f1
      
https://github.com/Perl/perl5/commit/d71ad706e21fea47e131cdf950f3a3ced25d00f1
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: update field code comments

Update the code comments in calls to $build_subclass->() to indicate
more consistently the 'type' of each field being declared.


  Commit: 894cafd3c29d278e671e0cf590e1ac125e70d70d
      
https://github.com/Perl/perl5/commit/894cafd3c29d278e671e0cf590e1ac125e70d70d
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: rename some fields to ioparam

In the INPUT_line and OUTPUT_line subclasses, rename the 'param' field
to 'ioparam', to better reflect that it holds an IO_Param object rather
than a Param object.


  Commit: 5b6a30f3f13a60c12b40ab9b67d0a7ee02e132d8
      
https://github.com/Perl/perl5/commit/5b6a30f3f13a60c12b40ab9b67d0a7ee02e132d8
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: add basic POD for Node.pm


  Commit: 5d95e1601d73b02c32894a64efdba42eef82755e
      
https://github.com/Perl/perl5/commit/5d95e1601d73b02c32894a64efdba42eef82755e
  Author: David Mitchell <da...@iabyn.com>
  Date:   2025-04-24 (Thu, 24 Apr 2025)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm

  Log Message:
  -----------
  ParseXS: refactor: fix for 5.8.9 builds

The work in this branch broke the parser under 5.8.9. Fix it, by not
trying to autovivify an undef object pointer (which under 5.8.9 is a
pseudo-hash thingy and generally behaves weirdly).

The attempt to autovivify an undef $xsub was always wrong, but harmless:
the value wasn't needed and was soon discarded. But under 5.8.9, it
became a runtime error.


Compare: https://github.com/Perl/perl5/compare/c3581ccfdd8b%5E...5d95e1601d73

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