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|
class Rack::Mount::StrexpParser
rule
target: expr { result = anchor ? "\\A#{val.join}\\Z" : "\\A#{val.join}" }
expr: expr token { result = val.join }
| token
token: PARAM {
name = val[0].to_sym
requirement = requirements[name]
result = REGEXP_NAMED_CAPTURE % [name, requirement]
}
| GLOB {
name = val[0].to_sym
requirement = requirements[name]
result = REGEXP_NAMED_CAPTURE % [name, '.+' || requirement]
}
| LPAREN expr RPAREN { result = "(?:#{val[1]})?" }
| CHAR { result = Regexp.escape(val[0]) }
end
---- header ----
require 'rack/mount/utils'
require 'rack/mount/strexp/tokenizer'
---- inner
if Regin.regexp_supports_named_captures?
REGEXP_NAMED_CAPTURE = '(?<%s>%s)'.freeze
else
REGEXP_NAMED_CAPTURE = '(?:<%s>%s)'.freeze
end
attr_accessor :anchor, :requirements
|
