Class: Molinillo::Resolver::Resolution

Inherits:
Object
  • Object
show all
Includes:
Delegates::ResolutionState, Delegates::SpecificationProvider
Defined in:
lib/molinillo/resolution.rb

Overview

A specific resolution from a given Molinillo::Resolver

Defined Under Namespace

Classes: Conflict, PossibilitySet, UnwindDetails

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Delegates::SpecificationProvider

#allow_missing?, #dependencies_equal?, #dependencies_for, #name_for, #name_for_explicit_dependency_source, #name_for_locking_dependency_source, #requirement_satisfied_by?, #search_for, #sort_dependencies

Methods included from Delegates::ResolutionState

#activated, #conflicts, #depth, #name, #possibilities, #requirement, #requirements, #unused_unwind_options

Constructor Details

#initialize(specification_provider, resolver_ui, requested, base) ⇒ Resolution

Initializes a new resolution.

Parameters:



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# File 'lib/molinillo/resolution.rb', line 152

def initialize(specification_provider, resolver_ui, requested, base)
  @specification_provider = specification_provider
  @resolver_ui = resolver_ui
  @original_requested = requested
  @base = base
  @states = []
  @iteration_counter = 0
  @parents_of = Hash.new { |h, k| h[k] = [] }
end

Instance Attribute Details

#base ⇒ DependencyGraph (readonly)

Returns the base dependency graph to which dependencies should be ‘locked’.

Returns:

  • (DependencyGraph) —

    the base dependency graph to which dependencies should be ‘locked’



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# File 'lib/molinillo/resolution.rb', line 141

def base
  @base
end

#iteration_rate=(value) ⇒ Integer

Returns the number of resolver iterations in between calls to #resolver_ui‘s UI#indicate_progress method.

Returns:



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# File 'lib/molinillo/resolution.rb', line 192

def iteration_rate=(value)
  @iteration_rate = value
end

#original_requested ⇒ Array (readonly)

Returns the dependencies that were explicitly required.

Returns:

  • (Array) —

    the dependencies that were explicitly required



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# File 'lib/molinillo/resolution.rb', line 144

def original_requested
  @original_requested
end

#resolver_ui ⇒ UI (readonly)

Returns the UI that knows how to communicate feedback about the resolution process back to the user.

Returns:

  • (UI) —

    the UI that knows how to communicate feedback about the resolution process back to the user



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# File 'lib/molinillo/resolution.rb', line 137

def resolver_ui
  @resolver_ui
end

#specification_provider ⇒ SpecificationProvider (readonly)

Returns the provider that knows about dependencies, requirements, specifications, versions, etc.

Returns:

  • (SpecificationProvider) —

    the provider that knows about dependencies, requirements, specifications, versions, etc.



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# File 'lib/molinillo/resolution.rb', line 133

def specification_provider
  @specification_provider
end

#started_at=(value) ⇒ Time

Returns the time at which resolution began.

Returns:

  • (Time) —

    the time at which resolution began



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# File 'lib/molinillo/resolution.rb', line 196

def started_at=(value)
  @started_at = value
end

#states=(value) ⇒ Array<ResolutionState>

Returns the stack of states for the resolution.

Returns:



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# File 'lib/molinillo/resolution.rb', line 200

def states=(value)
  @states = value
end

Instance Method Details

#resolve ⇒ DependencyGraph

Resolves the #original_requested dependencies into a full dependency

graph

Returns:

  • (DependencyGraph) —

    the dependency graph of successfully resolved dependencies

Raises:



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# File 'lib/molinillo/resolution.rb', line 167

def resolve
  start_resolution

  while state
    break if !state.requirement && state.requirements.empty?
    indicate_progress
    if state.respond_to?(:pop_possibility_state) # DependencyState
      debug(depth) { "Creating possibility state for #{requirement} (#{possibilities.count} remaining)" }
      state.pop_possibility_state.tap do |s|
        if s
          states.push(s)
          activated.tag(s)
        end
      end
    end
    process_topmost_state
  end

  resolve_activated_specs
ensure
  end_resolution
end