[PATCH v2 0/5] Create MI commands using python

[Jan Vrany <jan.vrany@fit.cvut.cz>]

This is a rework of previous patch series based on Tom's and Simon's
comments. I may happen that I overlooked something since some of
the issues were addressed in subsequent commits and a lot of code
was moved around.

This version *does not* use std::shared_ptr to hold on MI commands, instead
it makes sure that `this` pointer is not used after it me become stale.

Changes v1 -> v2

* squashed following commits into one:
  - 8e65585bdab0 Create MI commands using python.
  - 9e2afadd2d4d03 mi/python: C++ify python MI command handling code
  - 0491a0634f7de4 mi/python: Polish MI output of python commands
* moved class mi_command_py to python code
* use gdbpy_ref<> instead of void* to hold on Python object
  in mi_command_py
* release python objects held on by mi_command_py objects
  when finalizing Python
* merged py_mi_invoke() into mi_command_py::invoke()
* added missing copyright headers
* dropped micmdpy_parse_command_name()
* prefixed error messages by MI command name except for
  "Problem parsing arguments:" since old C-implemented MI
  commands do not prefix command name.
* make do_suppress_notification() to return gdb::optional
* split invoke to invoke and do_invoke, making invoke to perform
  common initialization
* add test redefining Python MI command while the very same command
  is running
* documented the fact that in mi_command_py::do_invoke() `this` pointer cannot
  be used after invoking python code since it may got stale.

Didier Nadeau (3):
  Use std::map for MI commands in mi-cmds.c
  Use classes to represent MI Command instead of structures
  Create MI commands using python.

Jan Vrany (2):
  mi/python: Allow redefinition of python MI commands
  mi/python: Add tests for python-defined MI commands

 gdb/ChangeLog                          |  88 +++++
 gdb/Makefile.in                        |   1 +
 gdb/mi/mi-cmd-info.c                   |   4 +-
 gdb/mi/mi-cmds.c                       | 501 +++++++++++++------------
 gdb/mi/mi-cmds.h                       |  87 +++--
 gdb/mi/mi-main.c                       |  18 +-
 gdb/mi/mi-main.h                       |   1 +
 gdb/mi/mi-parse.c                      |  20 +-
 gdb/mi/mi-parse.h                      |   6 +-
 gdb/python/py-micmd.c                  | 308 +++++++++++++++
 gdb/python/py-micmd.h                  |  52 +++
 gdb/python/python-internal.h           |   2 +
 gdb/python/python.c                    |  13 +-
 gdb/testsuite/ChangeLog                |   5 +
 gdb/testsuite/gdb.python/py-mi-cmd.exp | 109 ++++++
 gdb/testsuite/gdb.python/py-mi-cmd.py  |  39 ++
 16 files changed, 959 insertions(+), 295 deletions(-)
 create mode 100644 gdb/python/py-micmd.c
 create mode 100644 gdb/python/py-micmd.h
 create mode 100644 gdb/testsuite/gdb.python/py-mi-cmd.exp
 create mode 100644 gdb/testsuite/gdb.python/py-mi-cmd.py

-- 
2.20.1