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author | Conrad Irwin <conrad.irwin@gmail.com> | 2013-03-28 00:31:04 -0700 |
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committer | Conrad Irwin <conrad.irwin@gmail.com> | 2013-03-28 01:02:13 -0700 |
commit | 29397efb371b34cefbf7c1f1d30b38f59888b49b (patch) | |
tree | 88ef96fa58bc106933d13513c4d4627992d128f1 | |
parent | da1283b0009ee052c41a3b3b2659949dff794b7b (diff) | |
download | pry-29397efb371b34cefbf7c1f1d30b38f59888b49b.tar.gz |
Modify methods using Pry::Method#redefine
I considered calling redefine source=, but Pry::Method objects are not
designed to be mutable.
-rw-r--r-- | lib/pry/commands/edit.rb | 2 | ||||
-rw-r--r-- | lib/pry/method.rb | 6 | ||||
-rw-r--r-- | lib/pry/method/patcher.rb | 17 | ||||
-rw-r--r-- | spec/method/patcher_spec.rb | 27 |
4 files changed, 40 insertions, 12 deletions
diff --git a/lib/pry/commands/edit.rb b/lib/pry/commands/edit.rb index 6e8a806a..08ccd515 100644 --- a/lib/pry/commands/edit.rb +++ b/lib/pry/commands/edit.rb @@ -83,7 +83,7 @@ class Pry ExceptionPatcher.new(_pry_, state, file_and_line_for_current_exception).perform_patch else if code_object.is_a?(Pry::Method) - Method::Patcher.new(code_object).perform_patch + code_object.redefine Pry::Editor.edit_tempfile_with_content(code_object.source) else raise NotImplementedError, "Cannot yet patch #{code_object} objects!" end diff --git a/lib/pry/method.rb b/lib/pry/method.rb index bdb589f7..acf91e46 100644 --- a/lib/pry/method.rb +++ b/lib/pry/method.rb @@ -270,6 +270,12 @@ class Pry end end + # Update the live copy of the method's source. + def redefine(source) + Patcher.new(self).patch_in_ram source + Pry::Method(owner.instance_method(name)) + end + # Can we get the source code for this method? # @return [Boolean] def source? diff --git a/lib/pry/method/patcher.rb b/lib/pry/method/patcher.rb index 687b46ce..07dfa8fb 100644 --- a/lib/pry/method/patcher.rb +++ b/lib/pry/method/patcher.rb @@ -14,30 +14,25 @@ class Pry end # perform the patch - def perform_patch - source = patched_code + def patch_in_ram(source) if method.alias? with_method_transaction do - cached_eval source + redefine source end else - cached_eval source + redefine source end end private - def cached_eval(source) + def redefine(source) @@source_cache[cache_key] = source - TOPLEVEL_BINDING.eval source, cache_key - end - - def patched_code - @patched_code ||= wrap(Pry::Editor.edit_tempfile_with_content(method.source.lines.to_a)) + TOPLEVEL_BINDING.eval wrap(source), cache_key end def cache_key - "pry!#{method.owner.object_id}!#{method.name}" + "pry-redefined(0x#{method.owner.object_id.to_s(16)}##{method.name})" end # Run some code ensuring that at the end target#meth_name will not have changed. diff --git a/spec/method/patcher_spec.rb b/spec/method/patcher_spec.rb new file mode 100644 index 00000000..14d59441 --- /dev/null +++ b/spec/method/patcher_spec.rb @@ -0,0 +1,27 @@ +require 'helper' + +describe Pry::Method::Patcher do + + before do + @x = Object.new + def @x.test; :before; end + @method = Pry::Method(@x.method(:test)) + end + + it "should change the behaviour of the method" do + @x.test.should == :before + @method.redefine "def @x.test; :after; end\n" + @x.test.should == :after + end + + it "should return a new method with new source" do + @method.source.strip.should == "def @x.test; :before; end" + @method.redefine("def @x.test; :after; end\n"). + source.strip.should == "def @x.test; :after; end" + end + + it "should change the source of new Pry::Method objects" do + @method.redefine "def @x.test; :after; end\n" + Pry::Method(@x.method(:test)).source.strip.should == "def @x.test; :after; end" + end +end |