Sha256: d13880ee7cae3a255eb60559a17767ef7504b38dc1b6a586e3b1ba9031dc430f
Contents?: true
Size: 946 Bytes
Versions: 5
Compression:
Stored size: 946 Bytes
Contents
module Funkr
# Should not be used directly
module Matchers
class SafeMatcher
def initialize(match)
@const, *@data = match
@runner = nil
@undefined = self.class.constructs.clone
end
def self.build_matchers(constructs)
@constructs = constructs
constructs.each do |c|
name, *data = c
define_method(name) do |&b|
@undefined.delete(name)
if @const == name then
@runner = b
end
end
end
end
def self.constructs; @constructs; end
def self.match_with(normal_form) # &block
m = self.new(normal_form)
yield m
m.run_match
end
def run_match
if @undefined.any? then
raise "Incomplete match, missing : #{@undefined.join(" ")}"
end
@runner.call(*@data)
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems