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# frozen_string_literal: true
module Gitlab
module Ci
module Pipeline
module Expression
module Lexeme
require_dependency 're2'
class Pattern < Lexeme::Value
PATTERN = %r{^\/([^\/]|\\/)+[^\\]\/[ismU]*}.freeze
def initialize(regexp)
super(regexp.gsub(%r{\\/}, '/'))
unless Gitlab::UntrustedRegexp::RubySyntax.valid?(@value)
raise Lexer::SyntaxError, 'Invalid regular expression!'
end
end
def evaluate(variables = {})
Gitlab::UntrustedRegexp::RubySyntax.fabricate!(@value)
rescue RegexpError
raise Expression::RuntimeError, 'Invalid regular expression!'
end
def inspect
"/#{value}/"
end
def self.pattern
PATTERN
end
def self.build(string)
new(string)
end
def self.build_and_evaluate(data, variables = {})
return data if data.is_a?(Gitlab::UntrustedRegexp)
begin
new_pattern = build(data)
rescue Lexer::SyntaxError
return data
end
new_pattern.evaluate(variables)
end
end
end
end
end
end
end
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