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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/ext/core.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/ext/core.rb')
-rw-r--r-- | lib/rake/ext/core.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/rake/ext/core.rb b/lib/rake/ext/core.rb new file mode 100644 index 0000000000..1f3a738906 --- /dev/null +++ b/lib/rake/ext/core.rb @@ -0,0 +1,27 @@ +###################################################################### +# Core extension library +# +class Module + # Check for an existing method in the current class before extending. IF + # the method already exists, then a warning is printed and the extension is + # not added. Otherwise the block is yielded and any definitions in the + # block will take effect. + # + # Usage: + # + # class String + # rake_extension("xyz") do + # def xyz + # ... + # end + # end + # end + # + def rake_extension(method) + if method_defined?(method) + $stderr.puts "WARNING: Possible conflict with Rake extension: #{self}##{method} already exists" + else + yield + end + end +end |