Class | Gem::Requirement |
In: |
lib/rubygems/requirement.rb
|
Parent: | Object |
A Requirement is a set of one or more version restrictions. It supports a few (=, !=, >, <, >=, <=, ~>) different restriction operators.
OPS | = | { #:nodoc: "=" => lambda { |v, r| v == r }, "!=" => lambda { |v, r| v != r }, ">" => lambda { |v, r| v > r }, "<" => lambda { |v, r| v < r }, ">=" => lambda { |v, r| v >= r }, "<=" => lambda { |v, r| v <= r }, "~>" => lambda { |v, r| v >= r && v.release < r.bump } |
PATTERN | = | /\A\s*(#{quoted})?\s*(#{Gem::Version::VERSION_PATTERN})\s*\z/ |
Factory method to create a Gem::Requirement object. Input may be a Version, a String, or nil. Intended to simplify client code.
If the input is "weird", the default version requirement is returned.
Constructs a requirement from requirements. Requirements can be Strings, Gem::Versions, or Arrays of those. nil and duplicate requirements are ignored. An empty set of requirements is the same as ">= 0".
Parse obj, returning an [op, version] pair. obj can be a String or a Gem::Version.
If obj is a String, it can be either a full requirement specification, like ">= 1.2", or a simple version number, like "1.2".
parse("> 1.0") # => [">", "1.0"] parse("1.0") # => ["=", "1.0"] parse(Gem::Version.new("1.0")) # => ["=, "1.0"]