Sha256: d2bdd48134e26ca57744b14fc7af2b620d51bf9de3397e971fd6599415667446
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Versions: 5
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Stored size: 1.28 KB
Contents
module Turnip
class Placeholder
class Match < Struct.new(:regexp, :block);end
class << self
def add(name, &block)
placeholders[name] = Placeholder.new(name, &block)
end
def resolve(name)
find(name).regexp
end
def apply(name, value)
find(name).apply(value)
end
def find(name)
placeholders[name] or default
end
private
def placeholders
@placeholders ||= {}
end
def default
@default ||= new(:default) do
match %r((?:"([^"]*)"|'([^']*)'|([a-zA-Z0-9_-]+))) do |first, second, third|
first or second or third
end
end
end
end
def initialize(name, &block)
@name = name
@matches = []
instance_eval(&block)
end
def apply(value)
match, params = find_match(value)
if match and match.block then match.block.call(*params) else value end
end
def match(regexp, &block)
@matches << Match.new(regexp, block)
end
def regexp
Regexp.new(@matches.map(&:regexp).join('|'))
end
private
def find_match(value)
@matches.each do |m|
result = value.scan(m.regexp)
return m, result.flatten unless result.empty?
end
nil
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems