diff options
Diffstat (limited to 'lib/rubygems/name_tuple.rb')
-rw-r--r-- | lib/rubygems/name_tuple.rb | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/lib/rubygems/name_tuple.rb b/lib/rubygems/name_tuple.rb new file mode 100644 index 0000000000..d16fad26f1 --- /dev/null +++ b/lib/rubygems/name_tuple.rb @@ -0,0 +1,110 @@ +## +# +# Represents a gem of name +name+ at +version+ of +platform+. These +# wrap the data returned from the indexes. + +require 'rubygems/platform' + +class Gem::NameTuple + def initialize(name, version, platform="ruby") + @name = name + @version = version + + unless platform.kind_of? Gem::Platform + platform = "ruby" if !platform or platform.empty? + end + + @platform = platform + end + + attr_reader :name, :version, :platform + + ## + # Turn an array of [name, version, platform] into an array of + # NameTuple objects. + + def self.from_list list + list.map { |t| new(*t) } + end + + ## + # Turn an array of NameTuple objects back into an array of + # [name, version, platform] tuples. + + def self.to_basic list + list.map { |t| t.to_a } + end + + ## + # A null NameTuple, ie name=nil, version=0 + + def self.null + new nil, Gem::Version.new(0), nil + end + + ## + # Indicate if this NameTuple matches the current platform. + + def match_platform? + Gem::Platform.match @platform + end + + ## + # Indicate if this NameTuple is for a prerelease version. + def prerelease? + @version.prerelease? + end + + ## + # Return the name that the gemspec file would be + + def spec_name + case @platform + when nil, 'ruby', '' + "#{@name}-#{@version}.gemspec" + else + "#{@name}-#{@version}-#{@platform}.gemspec" + end + end + + ## + # Convert back to the [name, version, platform] tuple + + def to_a + [@name, @version, @platform] + end + + def to_s + "#<Gem::NameTuple #{@name}, #{@version}, #{@platform}>" + end + + def <=> other + to_a <=> other.to_a + end + + include Comparable + + ## + # Compare with +other+. Supports another NameTuple or an Array + # in the [name, version, platform] format. + + def == other + case other + when self.class + @name == other.name and + @version == other.version and + @platform == other.platform + when Array + to_a == other + else + false + end + end + + alias_method :eql?, :== + + def hash + to_a.hash + end + +end |