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Contents
module Cucumber
module CreateMeta
module VariableExpression
def evaluate(expression, env)
return nil if expression.nil?
begin
expression.gsub(/\${(.*?)(?:(?<!\\)\/(.*)\/(.*))?}/) do
variable = $1
pattern = $2
replacement = $3
value = get_value(variable, env)
raise "Undefined variable #{variable}" if value.nil?
if pattern.nil?
value
else
regexp = Regexp.new(pattern.gsub('\/', '/'))
match = value.match(regexp)
raise "No match for variable #{variable}" if match.nil?
match[1..-1].each_with_index do |group, i|
replacement = replacement.gsub("\\#{i+1}", group)
end
replacement
end
end
rescue
nil
end
end
def get_value(variable, env)
if variable.index('*')
env.each do |name, value|
return value if Regexp.new(variable.gsub('*', '.*')) =~ name
end
end
env[variable]
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems