Class: Gem::Resolver::InstallerSet

Inherits:
Set
  • Object
show all
Defined in:
lib/rubygems/resolver/installer_set.rb

Overview

A set of gems for installation sourced from remote sources and local .gem files

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Set

#prefetch

Constructor Details

#initialize(domain) ⇒ InstallerSet

Creates a new InstallerSet that will look for gems in domain.



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# File 'lib/rubygems/resolver/installer_set.rb', line 26

def initialize domain
  @domain = domain

  @f = Gem::SpecFetcher.fetcher

  @all = Hash.new { |h,k| h[k] = [] }
  @always_install      = []
  @ignore_dependencies = false
  @ignore_installed    = false
  @loaded_remote_specs = []
  @specs               = {}
end

Instance Attribute Details

#always_install ⇒ Object (readonly)

List of Gem::Specification objects that must always be installed.



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# File 'lib/rubygems/resolver/installer_set.rb', line 10

def always_install
  @always_install
end

#ignore_dependencies ⇒ Object

Only install gems in the always_install list



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# File 'lib/rubygems/resolver/installer_set.rb', line 15

def ignore_dependencies
  @ignore_dependencies
end

#ignore_installed ⇒ Object

Do not look in the installed set when finding specifications. This is used by the –install-dir option to ‘gem install`



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# File 'lib/rubygems/resolver/installer_set.rb', line 21

def ignore_installed
  @ignore_installed
end

Instance Method Details

#consider_local? ⇒ Boolean

Should local gems should be considered?

Returns:

  • (Boolean) 


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# File 'lib/rubygems/resolver/installer_set.rb', line 42

def consider_local? # :nodoc:
  @domain == :both or @domain == :local
end

#consider_remote? ⇒ Boolean

Should remote gems should be considered?

Returns:

  • (Boolean) 


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# File 'lib/rubygems/resolver/installer_set.rb', line 49

def consider_remote? # :nodoc:
  @domain == :both or @domain == :remote
end

#find_all(req) ⇒ Object

Returns an array of IndexSpecification objects matching DependencyRequest req.



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# File 'lib/rubygems/resolver/installer_set.rb', line 57

def find_all req
  res = []

  dep  = req.dependency

  return res if @ignore_dependencies and
            @always_install.none? { |spec| dep.matches_spec? spec }

  name = dep.name

  dep.matching_specs.each do |gemspec|
    next if @always_install.include? gemspec

    res << Gem::Resolver::InstalledSpecification.new(self, gemspec)
  end unless @ignore_installed

  if consider_local? then
    local_source = Gem::Source::Local.new

    if spec = local_source.find_gem(name, dep.requirement) then
      res << Gem::Resolver::IndexSpecification.new(
        self, spec.name, spec.version, local_source, spec.platform)
    end
  end

  if consider_remote? then
    load_remote_specs dep

    @all[name].each do |remote_source, n|
      if dep.match? n then
        res << Gem::Resolver::IndexSpecification.new(
          self, n.name, n.version, remote_source, n.platform)
      end
    end
  end

  res
end

#inspect ⇒ Object

:nodoc:



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# File 'lib/rubygems/resolver/installer_set.rb', line 96

def inspect # :nodoc:
  always_install = @always_install.map { |s| s.full_name }

  '#<%s domain: %s specs: %p always install: %p>' % [
    self.class, @domain, @specs.keys, always_install,
  ]
end

#load_remote_specs(dep) ⇒ Object

Loads remote prerelease specs if dep is a prerelease dependency



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# File 'lib/rubygems/resolver/installer_set.rb', line 107

def load_remote_specs dep # :nodoc:
  types = [:released]
  types << :prerelease if dep.prerelease?

  types.each do |type|
    next if @loaded_remote_specs.include? type
    @loaded_remote_specs << type

    list, = @f.available_specs type

    list.each do |uri, specs|
      specs.each do |n|
        @all[n.name] << [uri, n]
      end
    end
  end
end

#load_spec(name, ver, platform, source) ⇒ Object

Called from IndexSpecification to get a true Specification object.



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# File 'lib/rubygems/resolver/installer_set.rb', line 129

def load_spec name, ver, platform, source # :nodoc:
  key = "#{name}-#{ver}-#{platform}"

  @specs.fetch key do
    tuple = Gem::NameTuple.new name, ver, platform

    @specs[key] = source.fetch_spec tuple
  end
end

#pretty_print(q) ⇒ Object

:nodoc:



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# File 'lib/rubygems/resolver/installer_set.rb', line 139

def pretty_print q # :nodoc:
  q.group 2, '[InstallerSet', ']' do
    q.breakable
    q.text "domain: #{@domain}"

    q.breakable
    q.text 'specs: '
    q.pp @specs.keys

    q.breakable
    q.text 'always install: '
    q.pp @always_install
  end
end