Class: ElmInstall::Resolver

Inherits:
Base
  • Object
show all
Defined in:
lib/elm_install/resolver.rb

Overview

Resolves dependencies

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier, options = {}) ⇒ Resolver

Initializes a resolver

Parameters:

  • identifier (Identifier) —

    The identifier

  • options (Hash) (defaults to: {}) —

    The options



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# File 'lib/elm_install/resolver.rb', line 14

def initialize(identifier, options = {})
  @graph = Solve::Graph.new
  @identifier = identifier
  @dependencies = {}
  @options = options
  self
end

Instance Attribute Details

#dependencies ⇒ Array<Dependency> (readonly)

Returns The dependencies.

Returns:



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# File 'lib/elm_install/resolver.rb', line 5

def dependencies
  @dependencies
end

Instance Method Details

#resolve ⇒ Solve::Graph

Resolves the constraints for a version

Returns:

  • (Solve::Graph) —

    Returns the graph



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# File 'lib/elm_install/resolver.rb', line 26

def resolve
  @identifier.initial_dependencies.each do |dependency|
    resolve_dependency dependency
  end

  @graph
end

#resolve_dependencies(main, version) ⇒ Object

Resolves the dependencies of a dependency and version

Parameters:

Returns:

  • nil



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# File 'lib/elm_install/resolver.rb', line 66

def resolve_dependencies(main, version)
  dependencies = @identifier.identify(main.source.fetch(version))
  artifact = @graph.artifact main.name, version

  dependencies.each do |dependency|
    dependency.constraints.each do |constraint|
      artifact.depends dependency.name, constraint
    end

    resolve_dependency dependency
  end

  nil
end

#resolve_dependency(dependency) ⇒ Object

Resolves the dependencies of a dependency

Parameters:

Returns:

  • nil



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# File 'lib/elm_install/resolver.rb', line 40

def resolve_dependency(dependency)
  @dependencies[dependency.name] ||= dependency

  dependency
    .source
    .versions(
      dependency.constraints,
      @identifier.initial_elm_version,
      !@options[:skip_update],
      @options[:only_update]
    )
    .each do |version|
      next if @graph.artifact?(dependency.name, version)
      resolve_dependencies(dependency, version)
    end

  nil
end