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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-30 02:28:59 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-30 02:28:59 +0000 |
commit | 2e26fa48ffade18988e63eb9e0c9f9e2d7474576 (patch) | |
tree | add72ea5a4f487a58f983d11633b879d0f43b100 /lib | |
parent | 6ffebd1ab72c38497a48a9c87f1c1c9a388b7394 (diff) | |
download | ruby-2e26fa48ffade18988e63eb9e0c9f9e2d7474576.tar.gz |
forwardable.rb: adjust backtrace by tail call
* lib/forwardable.rb (def_instance_delegator): adjust backtrace of
method body by tail call optimization. adjusting the delegated
target is still done by deleting backtrace.
* lib/forwardable.rb (def_single_delegator): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53383 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib')
-rw-r--r-- | lib/forwardable.rb | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/lib/forwardable.rb b/lib/forwardable.rb index f27437af82..390e1460cf 100644 --- a/lib/forwardable.rb +++ b/lib/forwardable.rb @@ -182,23 +182,28 @@ module Forwardable accessor = "#{accessor}()" end - line_no = __LINE__; str = %{ + line_no = __LINE__; str = %{proc do def #{ali}(*args, &block) begin - #{accessor}.__send__(:#{method}, *args, &block) - rescue ::Exception - $@.delete_if{|s| ::Forwardable::FILE_REGEXP =~ s} unless ::Forwardable::debug - ::Kernel::raise - end + #{accessor} + ensure + $@.delete_if {|s| ::Forwardable::FILE_REGEXP =~ s} if $@ and !::Forwardable::debug + end.__send__(:#{method}, *args, &block) end - } + end} + + gen = RubyVM::InstructionSequence + .compile(str, __FILE__, __FILE__, line_no, + trace_instruction: false, + tailcall_optimization: true) + .eval + # If it's not a class or module, it's an instance begin - module_eval(str, __FILE__, line_no) + module_eval(&gen) rescue - instance_eval(str, __FILE__, line_no) + instance_eval(&gen) end - end alias delegate instance_delegate @@ -278,18 +283,23 @@ module SingleForwardable accessor = "#{accessor}()" end - line_no = __LINE__; str = %{ + line_no = __LINE__; str = %{proc do def #{ali}(*args, &block) begin - #{accessor}.__send__(:#{method}, *args, &block) - rescue ::Exception - $@.delete_if{|s| ::Forwardable::FILE_REGEXP =~ s} unless ::Forwardable::debug - ::Kernel::raise - end + #{accessor} + ensure + $@.delete_if {|s| ::Forwardable::FILE_REGEXP =~ s} if $@ and !::Forwardable::debug + end.__send__(:#{method}, *args, &block) end - } + end} + + gen = RubyVM::InstructionSequence + .compile(str, __FILE__, __FILE__, line_no, + trace_instruction: false, + tailcall_optimization: true) + .eval - instance_eval(str, __FILE__, line_no) + instance_eval(&gen) end alias delegate single_delegate |