Class: TextExtractor::Directives

Inherits:
Object
  • Object
show all
Defined in:
lib/text_extractor/directives.rb,
lib/text_extractor/directives/group.rb,
lib/text_extractor/directives/classes.rb

Overview

Directives can only be named with lowercase ascii letters (a-z) and _ (underscore).

Directives can take an argument. An argument can contain any sequence of characters other than newlines, parenthesis, or dot (.). The argument appears after the name, in parenthesis, with no whitespace between the name and left parenthesis. Whitespace inside the parenthesis is taken literally and not ignored.

When used, each directive name is preceeded by a dot (.). There should be no whitespace on either side of the dot. Some directives can be chained one after another, still using a dot to separate the earlier directive from the later one.

Defined Under Namespace

Classes: Any, AnyGroup, Begin, Capture, CaptureGroup, Comment, Directive, End, Group, Maybe, Repeat, Rest

Instance Method Summary collapse

Constructor Details

#initialize(original) ⇒ Directives

Returns a new instance of Directives.



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# File 'lib/text_extractor/directives.rb', line 25

def initialize(original)
  @source = original.source
  @options = original.options
  @output = nil
  @directives = []
end

Instance Method Details

#expand ⇒ Object 



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# File 'lib/text_extractor/directives.rb', line 32

def expand
  return @output if @output
  @state = State.new
  scanner = StringScanner.new(@source)
  read_line(scanner) until scanner.eos?
  raise 'Unterminated line group' unless @state.groups.empty?
  @output = Regexp.new(@state.target.join(''), @options)
end

#values ⇒ Object 



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# File 'lib/text_extractor/directives.rb', line 41

def values
  @directives.flat_map(&:values)
end