module Regexp::Syntax
Define the base module and the simplest of tokens.
After loading all the tokens the map is full. Extract all tokens and types into the All and Types constants.
Constants
- VERSION_CONST_REGEXP
- VERSION_FORMAT
- VERSION_REGEXP
Public Instance Methods
Source
# File lib/regexp_parser/syntax/version_lookup.rb, line 62 def comparable(name) # add .99 to treat versions without a patch value as latest patch version Gem::Version.new((name.to_s.scan(/\d+/) << 99).join('.')) end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 45 def const_missing(const_name) if const_name =~ VERSION_CONST_REGEXP return fallback_version_class(const_name) end super end
Calls superclass method
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# File lib/regexp_parser/syntax/version_lookup.rb, line 52 def fallback_version_class(version) sorted = (specified_versions + [version]).sort_by { |ver| comparable(ver) } index = sorted.index(version) index > 0 && const_get(sorted[index - 1]) end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 22 def for(name) (@alias_map ||= {})[name] ||= version_class(name) end
Returns the syntax specification class for the given syntax version name. The special names βanyβ and β*β return Syntax::Any
.
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# File lib/regexp_parser/syntax/version_lookup.rb, line 26 def new(name) warn 'Regexp::Syntax.new is deprecated in favor of Regexp::Syntax.for. '\ 'It does not return distinct instances and will be removed in v3.0.0.' self.for(name) end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 58 def specified_versions constants.select { |const_name| const_name =~ VERSION_CONST_REGEXP } end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 32 def supported?(name) name =~ VERSION_REGEXP && comparable(name) >= comparable('1.8.6') end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 36 def version_class(version) return Regexp::Syntax::Any if ['*', 'any'].include?(version.to_s) version =~ VERSION_REGEXP || raise(InvalidVersionNameError, version) warn_if_future_version(version) version_const_name = "V#{version.to_s.scan(/\d+/).join('_')}" const_get(version_const_name) || raise(UnknownSyntaxNameError, version) end
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# File lib/regexp_parser/syntax/version_lookup.rb, line 67 def warn_if_future_version(const_name) return if comparable(const_name) < comparable('4.0.0') warn('This library has only been tested up to Ruby 3.x, '\ "but you are running with #{const_name}") end