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48 lines
1002 B
48 lines
1002 B
9 years ago
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/*
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* vim: set ft=rust:
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* vim: set ft=reason:
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*
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* Copyright (c) 2009 - 2013 Monoidics ltd.
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* Copyright (c) 2013 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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open! Utils;
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/** The Smallfoot Intermediate Language: Unary Operators */
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let module L = Logging;
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let module F = Format;
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/** Unary operations */
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type t =
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| Neg /** Unary minus */
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| BNot /** Bitwise complement (~) */
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| LNot /** Logical Not (!) */;
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let compare o1 o2 =>
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switch (o1, o2) {
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| (Neg, Neg) => 0
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| (Neg, _) => (-1)
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| (_, Neg) => 1
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| (BNot, BNot) => 0
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| (BNot, _) => (-1)
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| (_, BNot) => 1
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| (LNot, LNot) => 0
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};
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let equal o1 o2 => compare o1 o2 == 0;
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/** String representation of unary operator. */
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let str =
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fun
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| Neg => "-"
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| BNot => "~"
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| LNot => "!";
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