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Contents
# frozen_string_literal: true
require "ruby-next/language/rewriters/pattern_matching"
module RubyNext
module Language
module Rewriters
using RubyNext
# Separate pattern matching rewriter for Ruby 2.7 to
# transpile only case...in with a find pattern
class FindPattern < PatternMatching
NAME = "pattern-matching-find-pattern"
SYNTAX_PROBE = "case 0; in [*,0,*]; true; else; 1; end"
MIN_SUPPORTED_VERSION = Gem::Version.new("3.0.0")
def on_case_match(node)
@has_find_pattern = false
process_regular_node(node).then do |new_node|
return new_node unless has_find_pattern
super(node)
end
end
def on_in_match(node)
@has_find_pattern = false
process_regular_node(node).then do |new_node|
return new_node unless has_find_pattern
super(node)
end
end
def on_find_pattern(node)
@has_find_pattern = true
super(node)
end
private
attr_reader :has_find_pattern
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems