模块 Gem::Molinillo::SpecificationProvider

返回是否可以安全地忽略此依赖项，因为它没有可能的匹配规范。

@param [Object] dependency @return [Boolean] 是否可以安全地跳过此依赖项。

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 108
def allow_missing?(dependency)
  false
end

确定两个依赖项数组是否相等，从而可以进行分组。

@param [Array<Object>] dependencies @param [Array<Object>] other_dependencies @return [Boolean] `dependencies` 和 `other_dependencies` 是否应该

be considered equal.

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 55
def dependencies_equal?(dependencies, other_dependencies)
  dependencies == other_dependencies
end

返回 `specification` 的依赖项。@note 此方法应为“纯”方法，即返回值应取决于

only on the `specification` parameter.

@param [Object] specification @return [Array<Object>] 给定规范所需的依赖项

`specification`.

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 31
def dependencies_for(specification)
  []
end

返回给定 `dependency` 的名称。@note 此方法应为“纯”方法，即返回值应取决于

only on the `dependency` parameter.

@param [Object] dependency @return [String] 给定 `dependency` 的名称。

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 65
def name_for(dependency)
  dependency.to_s
end

@return [String] 显式依赖项来源的名称，即

those passed to {Resolver#resolve} directly.

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 71
def name_for_explicit_dependency_source
  'user-specified dependency'
end

@return [String] “锁定”依赖项来源的名称，即

those passed to {Resolver#resolve} directly as the `base`

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 77
def name_for_locking_dependency_source
  'Lockfile'
end

确定在当前 `activated` 依赖图的上下文中，给定的 `spec` 是否满足给定的 `requirement`。

@param [Object] requirement @param [DependencyGraph] activated 当前依赖图中的

resolution process.

@param [Object] spec @return [Boolean] 在当前依赖图中，`spec` 是否满足 `requirement`

context of the current `activated` dependency graph.

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 44
def requirement_satisfied_by?(requirement, activated, spec)
  true
end

搜索与给定依赖项匹配的规范。返回数组中的规范将按相反顺序考虑，因此最新版本应放在最后。@note 此方法应为“纯”方法，即返回值应取决于

only on the `dependency` parameter.

@param [Object] dependency @return [Array<Object>] 满足给定要求的规范

`dependency`.

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 20
def search_for(dependency)
  []
end

对依赖项进行排序，以便首先处理那些最容易解决的依赖项。最容易解决的依赖项（通常）由以下因素定义

1) Is this dependency already activated?
2) How relaxed are the requirements?
3) Are there any conflicts for this dependency?
4) How many possibilities are there to satisfy this dependency?

@param [Array<Object>] dependencies @param [DependencyGraph] activated 当前依赖图中的

resolution process.

@param [{String => Array<Conflict>}] conflicts @return [Array<Object>] `dependencies` 的排序副本。

# File rubygems/vendor/molinillo/lib/molinillo/modules/specification_provider.rb, line 93
def sort_dependencies(dependencies, activated, conflicts)
  dependencies.sort_by do |dependency|
    name = name_for(dependency)
    [
      activated.vertex_named(name).payload ? 0 : 1,
      conflicts[name] ? 0 : 1,
    ]
  end
end