9.2: the shared glue — python_glue<Host>, for tap.python and tap.python~

[tap]

Plan item 9.2 (docs/TAP-PYTHON-PLAN.md): what tap.python~ does on the Max side that tap.python (9.3) needs too now lives in one place, templated on the host object.

What moved

• tap.python_glue.h (new, beside the object) holds:
  • python_attr<Host>, python_message<Host> and python_members<Host>. Together they cover the attributes and messages made for a class, keeping them in step across reloads, attribute get/set, and the guard (answered_by_max).
  • The C trampolines, instantiated per host type as python_glue<Host>. Each one finds its object through Host::self().
  • Moved in from the object: start_runtime(), watch_source(), to_values(), found_method() / not_found_method(), and the console hooks.
  • reserved_messages(audio), which now takes the audio names as a parameter (audio_messages()).
• tap.python_tilde_{attribute,message,cglue}.h are folded into it and deleted.
• tap.python_tilde_{filewatch,package}.h are renamed to tap.python_{filewatch,package}.h, since both objects use them.
• tap.python_tilde.cpp loses its hand-written trampolines.

Why it's a pure move

• tap.python~ reserves the same 53 names in the same order (checked against main). Its errors and console text are the same strings.
• The glue test changes only two call sites (found_method, not_found_method). One new scenario pins what an audio object reserves beyond what every object reserves.
• The data-import check is unaffected: the external imports no CPython data symbols.
• The guard's comment now matches what 9.0 found: an attribute answers its name, but a message added with object_addmethod() does not.
• style.yml's clang-tidy header filter now covers tap.python_tilde/tap.python*, so the glue headers stay in scope.

For 9.3

reserved_messages(false) still includes anything, which comes from 8.2's list. The plan says tap.python exposes a class's anything, so 9.3 needs to take it out of that object's list and add dumpout.

Verified (macOS 15, Max 9.1.5)

• Glue test: 10 cases, 138 assertions; ctest green
• clang-format (pre-commit) and clang-tidy-18, using CI's commands with the widened filter
• nm: no CPython data imports
• runtime-tests/run.py: every runtime test passes in Max, including attributes-and-messages (22 assertions), which goes through the new trampolines

🤖 Generated with Claude Code

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