bazel syntax: separate Parameter from Argument

A Parameter is not an Argument; this false relation was presumably
established to enable the reuse of one function of about two dozen lines
of code in the parser; this change forks that function,
and makes Parameter extend Node directly.

Also:
- Argument.Passed is now Argument.
  Its isX methods are removed; use 'arg instanceof Argument.X' instead.
- Argument.getName is un-deprecated; it seems useful and harmless.
  (But getIdentifier is gone; callers must cast to Argument.Keyword.)
- Document distribution of Node allocations.
- Delete ArgumentException

The only behavior changes are:
- wording of one error message.
- NodeVisitor: add missing descent into Parameter.identifier.

PiperOrigin-RevId: 272716872
11 files changed
tree: bcbe1490b5c80ff694ec9b1cf7daf9391b455d48
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

Bazel

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