Available list of platforms for targeting Gem installations.
See ‘gem help platform` for information on platform matching.
RemoteFetcher handles the details of fetching gems and gem information from a remote source.
Given a set of Gem::Dependency objects as needed and a way to query the set of available specs via set, calculates a set of ActivationRequest objects which indicate all the specs that should be activated to meet the all the requirements.
The SourceList represents the sources rubygems has been configured to use. A source may be created from an array of sources:
Gem::SourceList.from %w[https://rubygems.example https://internal.example]
Or by adding them:
sources = Gem::SourceList.new sources << 'https://rubygems.example'
The most common way to get a SourceList is Gem.sources.
Gem::StubSpecification reads the stub: line from the gemspec. This prevents us having to eval the entire gemspec in order to find out certain information.
An Uninstaller.
The uninstaller fires pre and post uninstall hooks. Hooks can be added either through a rubygems_plugin.rb file in an installed gem or via a rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb file. See Gem.pre_uninstall and Gem.post_uninstall for details.
The UriFormatter handles URIs from user-input and escaping.
uf = Gem::UriFormatter.new 'example.com' p uf.normalize #=> 'http://example.com'
Raised by Timeout.timeout when the block times out.
Base class for all URI exceptions.
Not a URI.
Not a URI component.
URI is valid, bad usage is not.
The default port for HTTPS URIs is 443, and the scheme is ‘https:’ rather than ‘http:’. Other than that, HTTPS URIs are identical to HTTP URIs; see URI::HTTP.
The default port for LDAPS URIs is 636, and the scheme is ‘ldaps:’ rather than ‘ldap:’. Other than that, LDAPS URIs are identical to LDAP URIs; see URI::LDAP.
RFC6068, the mailto URL scheme.
Raised when a mathematical function is evaluated outside of its domain of definition.
For example, since cos returns values in the range -1..1, its inverse function acos is only defined on that interval:
Math.acos(42)
produces:
Math::DomainError: Numerical argument is out of domain - "acos"
Process::Status encapsulates the information on the status of a running or terminated system process. The built-in variable $? is either nil or a Process::Status object.
fork { exit 99 } #=> 26557 Process.wait #=> 26557 $?.class #=> Process::Status $?.to_i #=> 25344 $? >> 8 #=> 99 $?.stopped? #=> false $?.exited? #=> true $?.exitstatus #=> 99
Posix systems record information on processes using a 16-bit integer. The lower bits record the process status (stopped, exited, signaled) and the upper bits possibly contain additional information (for example the program’s return code in the case of exited processes). Pre Ruby 1.8, these bits were exposed directly to the Ruby program. Ruby now encapsulates these in a Process::Status object. To maximize compatibility, however, these objects retain a bit-oriented interface. In the descriptions that follow, when we talk about the integer value of stat, we’re referring to this 16 bit value.
Raised on an attempt to access an object which was moved in Ractor#send or Ractor.yield.
r = Ractor.new { sleep } ary = [1, 2, 3] r.send(ary, move: true) ary.inspect # Ractor::MovedError (can not send any methods to a moved object)
Raised when an attempt is made to send a message to a closed port, or to retrieve a message from a closed and empty port. Ports may be closed explicitly with Ractor#close_outgoing/close_incoming and are closed implicitly when a Ractor terminates.
r = Ractor.new { sleep(500) } r.close_outgoing r.take # Ractor::ClosedError
ClosedError is a descendant of StopIteration, so the closing of the ractor will break the loops without propagating the error:
r = Ractor.new do loop do msg = receive # raises ClosedError and loop traps it puts "Received: #{msg}" end puts "loop exited" end 3.times{|i| r << i} r.close_incoming r.take puts "Continue successfully"
This will print:
Received: 0 Received: 1 Received: 2 loop exited Continue successfully