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# File 'lib/wechat/bot/pattern.rb', line 48
def to_r(msg = nil)
pattern = Pattern.resolve_proc(@pattern, msg)
case pattern
when Regexp, NilClass
prefix = Pattern.obj_to_r(Pattern.resolve_proc(@prefix, msg), :start)
suffix = Pattern.obj_to_r(Pattern.resolve_proc(@suffix, msg), :end)
/#{prefix}#{pattern}#{suffix}/
else
prefix = Pattern.obj_to_r(Pattern.resolve_proc(@prefix, msg))
suffix = Pattern.obj_to_r(Pattern.resolve_proc(@suffix, msg))
/^#{prefix}#{Pattern.obj_to_r(pattern)}#{suffix}$/
end
end
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