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# frozen_string_literal: true
module Gitlab
module Ci
module Pipeline
module Expression
module Lexeme
class Variable < Lexeme::Value
PATTERN = /\$(?<name>\w+)/.freeze
def initialize(name)
@name = name
end
def evaluate(variables = {})
variables.with_indifferent_access.fetch(@name, nil)
end
def self.build(string)
new(string.match(PATTERN)[:name])
end
end
end
end
end
end
end
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