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Contents
# frozen_string_literal: true
module Unparser
class Emitter
# Emitter for begin nodes
class Begin < self
children :body
private
# Emit inner nodes
#
# @return [undefined]
#
# @api private
#
def emit_inner
children.each_with_index do |child, index|
visit_plain(child)
write(NL) if index < children.length - 1
end
end
# Emitter for implicit begins
class Implicit < self
handle :begin
# Test if begin is terminated
#
# @return [Boolean]
#
# @api private
#
def terminated?
children.empty?
end
TERMINATING_PARENT = %i[root interpolated dyn_str_body].to_set.freeze
private
# Perform dispatch
#
# @return [undefined]
#
# @api private
#
def dispatch
if terminated? && !TERMINATING_PARENT.include?(parent_type)
write('()')
else
emit_inner
end
end
end # Implicit
# Emitter for explicit begins
class Explicit < self
include Terminated
handle :kwbegin
private
# Perform dispatch
#
# @return [undefined]
#
# @api private
#
def dispatch
write(K_BEGIN)
emit_body
k_end
end
# Emit body
#
# @return [undefined]
#
# @api private
#
def emit_body
if body.nil?
nl
elsif NOINDENT.include?(body.type)
emit_inner
else
indented { emit_inner }
end
end
end # Explicit
end # Begin
end # Emitter
end # Unparser
Version data entries
11 entries across 11 versions & 1 rubygems