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author | drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-06-23 22:11:55 +0000 |
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committer | drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-06-23 22:11:55 +0000 |
commit | d001539a0538cba0e48be2ebdafe29e67b006a4e (patch) | |
tree | abf1591ca3b56f04f46cc2cce9918700620a3ab1 /lib/rake/cloneable.rb | |
parent | 3fbc9440feb66cf762834b6d66e6f3a893bab5b7 (diff) | |
download | ruby-d001539a0538cba0e48be2ebdafe29e67b006a4e.tar.gz |
* lib/rake: Import Rake 0.9.2
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/rake/cloneable.rb')
-rw-r--r-- | lib/rake/cloneable.rb | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/rake/cloneable.rb b/lib/rake/cloneable.rb new file mode 100644 index 0000000000..19c780bff6 --- /dev/null +++ b/lib/rake/cloneable.rb @@ -0,0 +1,25 @@ +module Rake + # ########################################################################## + # Mixin for creating easily cloned objects. + # + module Cloneable + # Clone an object by making a new object and setting all the instance + # variables to the same values. + def dup + sibling = self.class.new + instance_variables.each do |ivar| + value = self.instance_variable_get(ivar) + new_value = value.clone rescue value + sibling.instance_variable_set(ivar, new_value) + end + sibling.taint if tainted? + sibling + end + + def clone + sibling = dup + sibling.freeze if frozen? + sibling + end + end +end |