Class: SyntaxTree::RBS::NameAndTypeParams

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_tree/rbs/utils.rb

Overview

Prints out the name of a class, interface, or module declaration. Additionally loops through each type parameter if there are any and print them out joined by commas. Checks for validation and variance.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ NameAndTypeParams

Returns a new instance of NameAndTypeParams.



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# File 'lib/syntax_tree/rbs/utils.rb', line 129

def initialize(node)
  @node = node
end

Instance Attribute Details

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/syntax_tree/rbs/utils.rb', line 127

def node
  @node
end

Instance Method Details

#format(q) ⇒ Object 



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# File 'lib/syntax_tree/rbs/utils.rb', line 133

def format(q)
  node.name.format(q)
  return if node.type_params.empty?

  q.text("[")
  q.seplist(node.type_params, -> { q.text(", ") }) do |param|
    parts = []

    if param.unchecked?
      parts << "unchecked"
    end

    if param.variance == :covariant
      parts << "out"
    elsif param.variance == :contravariant
      parts << "in"
    end

    parts << param.name
    q.text(parts.join(" "))

    if param.upper_bound
      q.text(" < ")
      param.upper_bound.format(q)
    end
  end

  q.text("]")
end

#pretty_print(q) ⇒ Object 



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# File 'lib/syntax_tree/rbs/utils.rb', line 163

def pretty_print(q)
  q.breakable
  q.pp(node.name)

  if node.type_params.any?
    q.breakable
    q.group(2, "type_params=[", "]") do
      q.seplist(node.type_params) do |param|
        q.group(2, "(type-param", ")") do
          if param.unchecked?
            q.breakable
            q.text("unchecked")
          end

          if param.variance == :covariant
            q.breakable
            q.text("covariant")
          elsif param.variance == :contravariant
            q.breakable
            q.text("contravariant")
          end

          q.breakable
          q.text("name=")
          q.pp(param.name)

          if param.upper_bound
            q.breakable
            q.text("upper_bound=")
            q.pp(param.upper_bound)
          end
        end
      end
    end
  end
end