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author | Takashi Kokubun <takashikkbn@gmail.com> | 2020-07-03 09:52:35 -0700 |
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committer | GitHub <noreply@github.com> | 2020-07-03 09:52:35 -0700 |
commit | f3a0d7a2035e9f5e0c70effd55732607e3def263 (patch) | |
tree | 697ff4e3c14edb8005ea2c361f026cec557fa1c6 /kernel.rb | |
parent | e8010c7401764f54173ffbe8c2bde38cd6d216fa (diff) |
Rewrite Kernel#tap with Ruby (#3281)
* Rewrite Kernel#tap with Ruby
This was good for VM too, but of course my intention is to unblock JIT's inlining of a block over yield
(inlining invokeyield has not been committed though).
* Fix test_settracefunc
About the :tap deletions, the :tap events are actually traced (we already have a TracePoint test for builtin methods),
but it's filtered out by tp.path == "xyzzy" (it became "<internal:kernel>"). We could trace tp.path == "<internal:kernel>"
cases too, but the lineno is impacted by kernel.rb changes and I didn't want to make it fragile for kernel.rb lineno changes.
Notes
Notes:
Merged-By: k0kubun <takashikkbn@gmail.com>
Diffstat (limited to 'kernel.rb')
-rw-r--r-- | kernel.rb | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -48,6 +48,28 @@ module Kernel Primitive.rb_obj_clone2(freeze) end + # + # call-seq: + # obj.tap {|x| block } -> obj + # + # Yields self to the block, and then returns self. + # The primary purpose of this method is to "tap into" a method chain, + # in order to perform operations on intermediate results within the chain. + # + # (1..10) .tap {|x| puts "original: #{x}" } + # .to_a .tap {|x| puts "array: #{x}" } + # .select {|x| x.even? } .tap {|x| puts "evens: #{x}" } + # .map {|x| x*x } .tap {|x| puts "squares: #{x}" } + # + #-- + # \private + #++ + # + def tap + yield(self) + self + end + module_function # |