[all-commits] [llvm/llvm-project] d1e9d0: [LLDB][DataFormatter] Add data formatter for libcx...

[Michael137 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d1e9d0b27f3a59f80787bfe5cf10d4373275c477
      https://github.com/llvm/llvm-project/commit/d1e9d0b27f3a59f80787bfe5cf10d4373275c477
  Author: Michael Buch <michaelbuch12 at gmail.com>
  Date:   2022-07-12 (Tue, 12 Jul 2022)

  Changed paths:
    M lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
    M lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp
    M lldb/source/Plugins/Language/CPlusPlus/LibCxx.h
    A lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/unordered_map/Makefile
    A lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/unordered_map/TestDataFormatterLibccUnorderedMap.py
    A lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/unordered_map/main.cpp

  Log Message:
  -----------
  [LLDB][DataFormatter] Add data formatter for libcxx std::unordered_map iterator

This patch adds a formatter for libcxx's `std::unordered_map` iterators.
The implementation follows a similar appraoch to the `std::map` iterator
formatter. I was hesistant about coupling the two into a common
implementation since the libcxx layouts might change for one of the
the containers but not the other.

All `std::unordered_map` iterators are covered with this patch:
1. const/non-const key/value iterators
2. const/non-const bucket iterators

Note that, we currently don't have a formatter for `std::unordered_map`.
This patch doesn't change that, we merely add support for its iterators,
because that's what Xcode users requested. One can still see contents
of `std::unordered_map`, whereas with iterators it's less ergonomic.

**Testing**

* Added API test

Differential Revision: https://reviews.llvm.org/D129364