Class: JsRegex::Converter::LiteralConverter

Inherits:
Base
  • Object
show all
Defined in:
lib/js_regex/converter/literal_converter.rb

Overview

Template class implementation.

Instance Attribute Summary

Attributes inherited from Base

#context, #target

Class Method Summary collapse

Methods inherited from Base

#convert, #initialize

Constructor Details

This class inherits a constructor from JsRegex::Converter::Base

Class Method Details

.convert(data, converter) ⇒ Object 



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# File 'lib/js_regex/converter/literal_converter.rb', line 9

def self.convert(data, converter)
  utf8_data = data.dup.force_encoding('UTF-8')
  if /[\u{10000}-\u{FFFFF}]/ =~ utf8_data
    converter.send(:warn_of_unsupported_feature, 'astral plane character')
  else
    escape_literal_forward_slashes(utf8_data)
    ensure_json_compatibility(utf8_data)
    utf8_data
  end
end

.ensure_json_compatibility(data) ⇒ Object 



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# File 'lib/js_regex/converter/literal_converter.rb', line 25

def self.ensure_json_compatibility(data)
  data.gsub!(/\\?[\f\n\r\t]/) { |lit| Regexp.escape(lit.delete('\\')) }
end

.escape_literal_forward_slashes(data) ⇒ Object 



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# File 'lib/js_regex/converter/literal_converter.rb', line 20

def self.escape_literal_forward_slashes(data)
  # literal slashes would be mistaken for the pattern end in JsRegex#to_s
  data.gsub!('/', '\\/')
end