[cfe-dev] RFC: Adding a rename refactoring tool to clang

[Amin Shali]

Folks,

At Google we are working on a tool and set of APIs for refactoring C++
programs based on LibTooling. Particularly, we have targeted rename
refactoring for C++ as our first step.

In our first iteration we want to offer two things:
1- A command line tool similar to clang-format which will semantically
rename a symbol (specified by a position in a file) in a set of input files.
2- An API for doing the above task which can effectively be used to provide
this functionality for any editor (Emacs, Vim, CodeMirror, etc.).

== Renaming capabilities
In the first iteration, we are offering the following features for the
rename refactoring:
=== Supported C++ constructs:
         - Global and local variables (including function arguments)
         - Functions
         - C and CXX record types (structs/unions/classes)
           - For classes this includes renaming the constructor and
destructor
         - User defined types
         - Enumerations (names and constants)
         - Record member variables and methods
         - Namespace specifiers
         - Template parameters
         - Lambda captures
         - Overloaded operators
=== Unsupported C++ constructs:
         - Macros
         - Symbols in comments

== Command line program
=== Current support:
         - Input from stdin, output to stdout
         - Input and output from/to disk
         - Option to specify include path
         - Option to predefine macros
=== Possible improvements:
         - Multiple files from stdin
         - Making backups of renamed files

We think this tool should reside in clang-tools-extra.

Please let us know what you think. Any comment and feedback is appreciated.

 Thank you.

*Λ*MIN シ | amshali@ <amshali at google.com> | Google Inc.
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