#209
241.md
Updated at 2016-11-23 01:46

Fwd: [ruby-co45253] [RFC] RubyVM::FrameInfo.caller method

May 28, 2012 From: ko1@a...

誰からも反応が無く寂しいので,

どなたか考えて下さい....

結局,保守的に倒して,新しいメソッド名を加えた,という感じです.

- ----- Original Message --------

Subject: [ruby-core:45253] [RFC] RubyVM::FrameInfo.caller method

Date: Sat, 26 May 2012 14:07:16 +0900

From: SASADA Koichi <ko1@a...>

Reply-To: ruby-core@r...

To: ruby-core@r...

Hi,

I added a class RubyVM::FrameInfo.caller and methods of it. The

following text is quoted from ChangeLog.

vm.c (RubyVM::FrameInfo): add a class to access each frame

information. You don't need to parse strings from caller(). FrameInfo has the following methods: FrameInfo#name: method name, class name, etc with decorations. FrameInfo#basename: name without decorations. FrameInfo#line_no: line number. FrameInfo#filename: file name. FrameInfo#filepath: full filepath. FrameInfo#iseq: iseq if it is iseq frame (defined by ruby script) FrameInfo#to_s: return caller() method style string. RubyVM::FrameInfo.caller(n, lev) returns array of FrameInfo objects. The name "RubyVM::FrameInfo.caller" is long and ambiguous (it is confusing with Kernel::caller() method), we need to change the name before Ruby 2.0 release. Good names or comments are welcome.

I think it is strange a bit that the singleton method of the FrameInfo

class returns a collection (array) of FrameInfo objects. And the name

`caller()' is confusing with Kernel.caller().

Any good name?

Or any comment of this new feature?

BTW, I added second argument of Kernel::caller(). You can specify

required array size with it. For example, caller(0, 1) returns only 1

frame (the current frame which calls caller() method) information string.


// SASADA Koichi at atdot dot net

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