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18 lines
512 B
18 lines
512 B
6 years ago
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(*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! IStd
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module F = Format
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(**
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If fn is empty, prints [pp_lhs_alone lhs]
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Otherwise prints [pp_lhs lhs ^ sep ^ fn]
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*)
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let pp ~pp_lhs ~pp_lhs_alone ~sep f lhs fn =
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let fieldname = Typ.Fieldname.to_flat_string fn in
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if String.is_empty fieldname then pp_lhs_alone f lhs
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else F.fprintf f "%a%s%s" pp_lhs lhs sep fieldname
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