Class: JsonCompleter::Scanners::CompletionStringToken

Inherits:
Struct
  • Object
show all
Defined in:
lib/json_completer/scanners.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(buffer: nil, escape_state: nil, unicode_digits: nil) ⇒ CompletionStringToken 



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# File 'lib/json_completer/scanners.rb', line 6

def initialize(buffer: nil, escape_state: nil, unicode_digits: nil)
  buffer ||= StringIO.new
  buffer << '"' if buffer.string.empty?
  super
end

Instance Attribute Details

#buffer ⇒ Object

Returns the value of attribute buffer



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# File 'lib/json_completer/scanners.rb', line 5

def buffer
  @buffer
end

#escape_state ⇒ Object

Returns the value of attribute escape_state



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# File 'lib/json_completer/scanners.rb', line 5

def escape_state
  @escape_state
end

#unicode_digits ⇒ Object

Returns the value of attribute unicode_digits



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# File 'lib/json_completer/scanners.rb', line 5

def unicode_digits
  @unicode_digits
end

Instance Method Details

#append_simple_escape(byte) ⇒ Object

completion keeps escape bytes verbatim, so convert the ASCII byte back into a 1-byte string.



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# File 'lib/json_completer/scanners.rb', line 22

def append_simple_escape(byte)
  buffer << byte.chr(Encoding::UTF_8)
end

#append_slice(input, start_index, length) ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 17

def append_slice(input, start_index, length)
  buffer << input.byteslice(start_index, length)
end

#append_unicode_digit(byte) ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 35

def append_unicode_digit(byte)
  unicode_digits << byte
  buffer << byte.chr(Encoding::UTF_8)
end

#finalized_incomplete_value ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 55

def finalized_incomplete_value
  value = buffer.string.dup
  trailing_backslashes = 0
  index = value.length - 1

  while index >= 0 && value[index] == '\\'
    trailing_backslashes += 1
    index -= 1
  end

  value = value[0...-1] if trailing_backslashes.odd?
  value = value.sub(/\\u[0-9a-fA-F]{0,3}\z/, '')
  "#{value}\""
end

#finish_unicode_escape! ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 40

def finish_unicode_escape!; end

#invalid_unicode! ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 42

def invalid_unicode!
  current = buffer.string
  current = current.sub(/\\u[0-9a-fA-F]*\z/, '')
  self.buffer = StringIO.new
  buffer << current
  self.unicode_digits = nil
  self.escape_state = nil
end

#start_escape! ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 12

def start_escape!
  buffer << '\\'
  self.escape_state = :backslash
end

#start_unicode_escape! ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 30

def start_unicode_escape!
  self.unicode_digits = String.new
  buffer << 'u'
end

#terminate! ⇒ Object 



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# File 'lib/json_completer/scanners.rb', line 51

def terminate!
  buffer << '"'
end

#valid_simple_escape?(_byte) ⇒ Boolean 



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# File 'lib/json_completer/scanners.rb', line 26

def valid_simple_escape?(_byte)
  true
end