Class Gem::Requirement
In: lib/rubygems/requirement.rb
Parent: Object

Requirement version includes a prefaced comparator in addition to a version number.

A Requirement object can actually contain multiple, er, requirements, as in (> 1.2, < 2.0).

Methods

as_list   create   default   new   normalize   parse   prerelease?   satisfied_by?   satisfy?  

Included Modules

Comparable

Constants

OPS = { "=" => 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 = v.release;
OP_RE = OPS.keys.map{ |k| Regexp.quote k }.join '|'

Attributes

requirements  [R] 

Public Class methods

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.

A default "version requirement" can surely only be ’>= 0’.

Constructs a Requirement from requirements which can be a String, a Gem::Version, or an Array of those. See parse for details on the formatting of requirement strings.

Public Instance methods

Parse the version requirement obj returning the operator and version.

The requirement can be a String or a Gem::Version. A String can be an operator (<, <=, =, >=, >, !=, ~>), a version number, or both, operator first.

True if this requirement satisfied by the Gem::Version version.

Is "version op required_version" satisfied?

[Validate]