Class: Bundler::Patch::ConservativeResolver

Inherits:
Resolver
  • Object
show all
Defined in:
lib/bundler/patch/conservative_resolver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(index, source_requirements, base) ⇒ ConservativeResolver

Returns a new instance of ConservativeResolver.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 5

def initialize(index, source_requirements, base)
  # hack for 1.10 and 1.11 support
  case Bundler::Resolver.instance_method(:initialize).arity
  when 3
    super(index, source_requirements, base)
  when 4
    super(index, source_requirements, base, nil)
  end
end

Instance Attribute Details

#gems_to_update ⇒ Object

Returns the value of attribute gems_to_update.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 3

def gems_to_update
  @gems_to_update
end

#locked_specs ⇒ Object

Returns the value of attribute locked_specs.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 3

def locked_specs
  @locked_specs
end

#minor_preferred ⇒ Object

Returns the value of attribute minor_preferred.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 3

def minor_preferred
  @minor_preferred
end

#prefer_minimal ⇒ Object

Returns the value of attribute prefer_minimal.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 3

def prefer_minimal
  @prefer_minimal
end

#strict ⇒ Object

Returns the value of attribute strict.



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# File 'lib/bundler/patch/conservative_resolver.rb', line 3

def strict
  @strict
end

Instance Method Details

#debug_format_result(dep, res) ⇒ Object 



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# File 'lib/bundler/patch/conservative_resolver.rb', line 41

def debug_format_result(dep, res)
  a = [dep.to_s,
       res.map { |sg| [sg.version, sg.dependencies_for_activated_platforms.map { |dp| [dp.name, dp.requirement.to_s] }] }]
  [a.first, a.last.map { |sg_data| [sg_data.first.version, sg_data.last.map { |aa| aa.join(' ') }] }]
end

#filter_specs(specs, locked_spec) ⇒ Object 



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# File 'lib/bundler/patch/conservative_resolver.rb', line 47

def filter_specs(specs, locked_spec)
  res = specs.select do |sg|
    # SpecGroup is grouped by name/version, multiple entries for multiple platforms.
    # We only need the name, which will be the same, so hard coding to first is ok.
    gem_spec = sg.first

    if locked_spec
      gsv = gem_spec.version
      lsv = locked_spec.version

      must_match = @minor_preferred ? [0] : [0, 1]

      matches = must_match.map { |idx| gsv.segments[idx] == lsv.segments[idx] }
      (matches.uniq == [true]) ? gsv.send(:>=, lsv) : false
    else
      true
    end
  end

  sort_specs(res, locked_spec)
end

#move_version_to_end(specs, version, result) ⇒ Object 



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# File 'lib/bundler/patch/conservative_resolver.rb', line 108

def move_version_to_end(specs, version, result)
  spec_group = specs.detect { |s| s.first.version.to_s == version.to_s }
  if spec_group
    result.reject! { |s| s.first.version.to_s === version.to_s }
    result << spec_group
  end
end

#search_for(dependency) ⇒ Object 



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# File 'lib/bundler/patch/conservative_resolver.rb', line 15

def search_for(dependency)
  res = super(dependency)

  dep = dependency.dep unless dependency.is_a? Gem::Dependency

  @conservative_search_for ||= {}
  res = @conservative_search_for[dep] ||= begin
    gem_name = dep.name

    # An Array per version returned, different entries for different platforms.
    # We just need the version here so it's ok to hard code this to the first instance.
    locked_spec = @locked_specs[gem_name].first

    (@strict ?
      filter_specs(res, locked_spec) :
      sort_specs(res, locked_spec)).tap do |res|
      STDERR.puts debug_format_result(dep, res).inspect if ENV['DEBUG_PATCH_RESOLVER']
    end
  end

  # dup is important, in weird (large) cases Bundler will empty the result array corrupting the cache.
  # Bundler itself doesn't have this problem because the super search_for does a select on its cached
  # search results, effectively duping it.
  res.dup
end

#sort_specs(specs, locked_spec) ⇒ Object

reminder: sort still filters anything older than locked version



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# File 'lib/bundler/patch/conservative_resolver.rb', line 70

def sort_specs(specs, locked_spec)
  return specs unless locked_spec
  gem_name = locked_spec.name
  locked_version = locked_spec.version

  filtered = specs.select { |s| s.first.version >= locked_version }

  filtered.sort do |a, b|
    a_ver = a.first.version
    b_ver = b.first.version
    gem_patch = @gems_to_update.gem_patch_for(gem_name)
    new_version = gem_patch ? gem_patch.new_version : nil
    case
    when a_ver.segments[0] != b_ver.segments[0]
      b_ver <=> a_ver
    when !@minor_preferred && (a_ver.segments[1] != b_ver.segments[1])
      b_ver <=> a_ver
    when @prefer_minimal && !@gems_to_update.unlocking_gem?(gem_name)
      b_ver <=> a_ver
    when @prefer_minimal && @gems_to_update.unlocking_gem?(gem_name) &&
      (![a_ver, b_ver].include?(locked_version) &&
        (!new_version || (new_version && a_ver >= new_version && b_ver >= new_version)))
      b_ver <=> a_ver
    else
      a_ver <=> b_ver
    end
  end.tap do |result|
    if @gems_to_update.unlocking_gem?(gem_name)
      gem_patch = @gems_to_update.gem_patch_for(gem_name)
      if gem_patch && gem_patch.new_version && @prefer_minimal
        move_version_to_end(specs, gem_patch.new_version, result)
      end
    else
      move_version_to_end(specs, locked_version, result)
    end
  end
end