[PATCH 0/6] qapi: Add support for aliases

[Kevin Wolf]

This series introduces alias definitions for QAPI object types (structs
and unions).

This allows using the same QAPI type and visitor even when the syntax
has some variations between different external interfaces such as QMP
and the command line.

It also provides a new tool for evolving the schema while maintaining
backwards compatibility (possibly during a deprecation period).

The first user is intended to be a QAPIfied -chardev command line
option, for which I'll send a separate series. A git tag is available
that contains both this series and the chardev changes that make use of
it:

    https://repo.or.cz/qemu/kevin.git qapi-alias-chardev-v1

Kevin Wolf (6):
  qapi: Add interfaces for alias support to Visitor
  qapi: Remember alias definitions in qobject-input-visitor
  qapi: Simplify full_name_nth() in qobject-input-visitor
  qapi: Apply aliases in qobject-input-visitor
  qapi: Add support for aliases
  tests/qapi-schema: Test cases for aliases

 docs/devel/qapi-code-gen.txt                  |  37 +-
 docs/sphinx/qapidoc.py                        |   2 +-
 include/qapi/visitor-impl.h                   |  12 +
 include/qapi/visitor.h                        |  37 ++
 qapi/qapi-visit-core.c                        |  21 ++
 qapi/qobject-input-visitor.c                  | 322 ++++++++++++++++--
 scripts/qapi/expr.py                          |  34 +-
 scripts/qapi/schema.py                        |  27 +-
 scripts/qapi/types.py                         |   4 +-
 scripts/qapi/visit.py                         |  33 +-
 tests/qapi-schema/test-qapi.py                |   7 +-
 tests/qapi-schema/alias-bad-type.err          |   2 +
 tests/qapi-schema/alias-bad-type.json         |   3 +
 tests/qapi-schema/alias-bad-type.out          |   0
 tests/qapi-schema/alias-missing-source.err    |   2 +
 tests/qapi-schema/alias-missing-source.json   |   3 +
 tests/qapi-schema/alias-missing-source.out    |   0
 tests/qapi-schema/alias-name-bad-type.err     |   2 +
 tests/qapi-schema/alias-name-bad-type.json    |   3 +
 tests/qapi-schema/alias-name-bad-type.out     |   0
 tests/qapi-schema/alias-source-bad-type.err   |   2 +
 tests/qapi-schema/alias-source-bad-type.json  |   3 +
 tests/qapi-schema/alias-source-bad-type.out   |   0
 .../alias-source-elem-bad-type.err            |   2 +
 .../alias-source-elem-bad-type.json           |   3 +
 .../alias-source-elem-bad-type.out            |   0
 tests/qapi-schema/alias-source-empty.err      |   2 +
 tests/qapi-schema/alias-source-empty.json     |   3 +
 tests/qapi-schema/alias-source-empty.out      |   0
 tests/qapi-schema/alias-unknown-key.err       |   3 +
 tests/qapi-schema/alias-unknown-key.json      |   3 +
 tests/qapi-schema/alias-unknown-key.out       |   0
 tests/qapi-schema/aliases-bad-type.err        |   2 +
 tests/qapi-schema/aliases-bad-type.json       |   3 +
 tests/qapi-schema/aliases-bad-type.out        |   0
 tests/qapi-schema/double-type.err             |   2 +-
 tests/qapi-schema/meson.build                 |   8 +
 tests/qapi-schema/qapi-schema-test.json       |  24 ++
 tests/qapi-schema/qapi-schema-test.out        |  29 ++
 tests/qapi-schema/unknown-expr-key.err        |   2 +-
 40 files changed, 596 insertions(+), 46 deletions(-)
 create mode 100644 tests/qapi-schema/alias-bad-type.err
 create mode 100644 tests/qapi-schema/alias-bad-type.json
 create mode 100644 tests/qapi-schema/alias-bad-type.out
 create mode 100644 tests/qapi-schema/alias-missing-source.err
 create mode 100644 tests/qapi-schema/alias-missing-source.json
 create mode 100644 tests/qapi-schema/alias-missing-source.out
 create mode 100644 tests/qapi-schema/alias-name-bad-type.err
 create mode 100644 tests/qapi-schema/alias-name-bad-type.json
 create mode 100644 tests/qapi-schema/alias-name-bad-type.out
 create mode 100644 tests/qapi-schema/alias-source-bad-type.err
 create mode 100644 tests/qapi-schema/alias-source-bad-type.json
 create mode 100644 tests/qapi-schema/alias-source-bad-type.out
 create mode 100644 tests/qapi-schema/alias-source-elem-bad-type.err
 create mode 100644 tests/qapi-schema/alias-source-elem-bad-type.json
 create mode 100644 tests/qapi-schema/alias-source-elem-bad-type.out
 create mode 100644 tests/qapi-schema/alias-source-empty.err
 create mode 100644 tests/qapi-schema/alias-source-empty.json
 create mode 100644 tests/qapi-schema/alias-source-empty.out
 create mode 100644 tests/qapi-schema/alias-unknown-key.err
 create mode 100644 tests/qapi-schema/alias-unknown-key.json
 create mode 100644 tests/qapi-schema/alias-unknown-key.out
 create mode 100644 tests/qapi-schema/aliases-bad-type.err
 create mode 100644 tests/qapi-schema/aliases-bad-type.json
 create mode 100644 tests/qapi-schema/aliases-bad-type.out

-- 
2.28.0