Issue #12747 has been updated by Koichi Sasada.
Sorry for late response.
I missed incompatibility.
How about to commit it before next preview and ask feedback from users?
Thansk,
Koichi
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Feature #12747: Add TracePoint#callee_id
https://bugs.ruby-lang.org/issues/12747#change-61191
* Author: Kazuki Tsujimoto
* Status: Assigned
* Priority: Normal
* Assignee: Koichi Sasada
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# Abstract
I propose to add TracePoint#callee_id which returns the called name of the method.
~~~ruby
def m
end
alias am m
TracePoint.new(:call) do |tp|
p [tp.method_id, tp.callee_id] #=> [:m, :am]
end.enable do
am
end
~~~
# Background
We can get callee id by `tp.binding.eval('__callee__'))`,
but it is slow(10x~) and can't get callee id of CFUNC.
~~~
class Object
alias aitself itself
end
TracePoint.new(:c_call) do |tp|
p [tp.method_id, tp.binding.eval('__callee__')] #=> [:itself, nil]
end.enable do
aitself
end
~~~~
# Implementation
I attached 2 patches.
* 0001-TracePoint-method_id-should-return-method_id-not-cal.patch
* Now, TracePoint#method_id returns not only method id(`__method__`) but callee id.
This patch makes TracePoint#method_id return method id always, so it introduces some incompatibility.
* 0002-Add-TracePoint-callee_id.patch
* Add TracePoint#callee_id.
# Usecase
power_assert gem wants this method to get column number of each method calls.
---Files--------------------------------
0001-TracePoint-method_id-should-return-method_id-not-cal.patch (9.76 KB)
0002-Add-TracePoint-callee_id.patch (19.4 KB)
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