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Versions: 24
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Contents
# frozen_string_literal: true
module Unparser
class Emitter
# Dynamic execute string literal emitter
class XStr < self
handle :xstr
private
def dispatch
if heredoc?
emit_heredoc
else
emit_xstr
end
end
def heredoc?
children.any? { |node| node.eql?(s(:str, '')) }
end
def emit_heredoc
write(%(<<~`HEREDOC`))
buffer.indent
nl
children.each do |child|
if n_str?(child)
write(child.children.first)
else
emit_begin(child)
end
end
buffer.unindent
write("HEREDOC\n")
end
def emit_xstr
write('`')
children.each do |child|
if n_begin?(child)
emit_begin(child)
else
emit_string(child)
end
end
write('`')
end
def emit_string(value)
write(escape_xstr(value.children.first))
end
def escape_xstr(input)
input.chars.map do |char|
if char.eql?('`')
'\\`'
else
char
end
end.join
end
def emit_begin(component)
write('#{')
visit(unwrap_single_begin(component))
write('}')
end
end # XStr
end # Emitter
end # Unparser
Version data entries
24 entries across 24 versions & 2 rubygems