Class: URIPattern::ConstructorStringParser

Inherits:
Object
  • Object
show all
Defined in:
lib/uri_pattern/url_parser.rb

Overview

Implements the WHATWG URLPattern “constructor string parser” state machine. urlpattern.spec.whatwg.org/#constructor-string-parsing

Walks the (regexp-coalesced) token list with a state machine, recording each component into ‘result` as it is delimited. Component keys use the spec names (`:search` / `:hash`); URLParser.split_pattern maps them to `:query` / `:fragment`.

Constant Summary collapse

NON_SPECIAL_CHAR_TYPES = 
%i[char escaped_char invalid_char].freeze
SEARCH_PREFIX_BLOCKERS = 
%i[name regexp close asterisk].freeze

Instance Method Summary collapse

Constructor Details

#initialize(input, tokens) ⇒ ConstructorStringParser

Returns a new instance of ConstructorStringParser.



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# File 'lib/uri_pattern/url_parser.rb', line 239

def initialize(input, tokens)
  @input = input
  @tokens = tokens
  @result = {}
  @component_start = 0
  @token_index = 0
  @token_increment = 1
  @group_depth = 0
  @ipv6_depth = 0
  @protocol_special = false
  @state = :init
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/uri_pattern/url_parser.rb', line 252

def parse
  while @token_index < @tokens.length
    @token_increment = 1

    if current.type == :end
      case @state
      when :init
        rewind
        if hash_prefix?
          change_state(:hash, 1)
        elsif search_prefix?
          change_state(:search, 1)
        else
          change_state(:pathname, 0)
        end
        @token_index += @token_increment
        next
      when :authority
        rewind_and_set_state(:hostname)
        @token_index += @token_increment
        next
      else
        change_state(:done, 0)
        break
      end
    end

    if group_open?
      @group_depth += 1
      @token_index += @token_increment
      next
    end

    if @group_depth.positive?
      if group_close?
        @group_depth -= 1
      else
        @token_index += @token_increment
        next
      end
    end

    step_state

    @token_index += @token_increment
  end

  @result[:port] = "" if @result.key?(:hostname) && !@result.key?(:port)
  @result
end