@return [Symbol] The method which handles this list of patterns.
This method should exist inside the {Handlers} module
@return [Array] A list of patterns
@param [Array] pattern A list of patterns to match tokens against @param [Symbol] #handler_method The method to be invoked when patterns
are matched. This method should exist inside the {Handlers} module
# File lib/chronic/handler.rb, line 14 def initialize(pattern, handler_method) @pattern = pattern @handler_method = handler_method end
@param [Handler] The handler to compare @return [Boolean] True if these handlers match
# File lib/chronic/handler.rb, line 75 def ==(other) @pattern == other.pattern end
# File lib/chronic/handler.rb, line 64 def invoke(type, tokens, options) if Chronic.debug puts "-#{type}" puts "Handler: #{@handler_method}" end Handlers.send(@handler_method, tokens, options) end
@param [Array] tokens @param [Hash] definitions @return [Boolean] @see Chronic.tokens_to_span
# File lib/chronic/handler.rb, line 23 def match(tokens, definitions) token_index = 0 @pattern.each do |element| name = element.to_s optional = name[-1, 1] == '?' name = name.chop if optional case element when Symbol if tags_match?(name, tokens, token_index) token_index += 1 next else if optional next else return false end end when String return true if optional && token_index == tokens.size if definitions.key?(name.to_sym) sub_handlers = definitions[name.to_sym] else raise ChronicPain, "Invalid subset #{name} specified" end sub_handlers.each do |sub_handler| return true if sub_handler.match(tokens[token_index..tokens.size], definitions) end else raise ChronicPain, "Invalid match type: #{element.class}" end end return false if token_index != tokens.size return true end