(* Copyright (c) 2008, Adam Chlipala * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - The names of contributors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. *) structure Prim :> PRIM = struct datatype t = Int of Int64.int | Float of Real64.real | String of string | Char of char open Print.PD open Print fun p_t t = case t of Int n => string (Int64.toString n) | Float n => string (Real64.toString n) | String s => box [string "\"", string (String.toString s), string "\""] | Char ch => box [string "#\"", string (String.toString (String.str ch)), string "\""] fun int2s n = if Int64.compare (n, Int64.fromInt 0) = LESS then "-" ^ Int64.toString (Int64.~ n) ^ "LL" else Int64.toString n ^ "LL" fun int2s' n = if Int64.compare (n, Int64.fromInt 0) = LESS then "-" ^ Int64.toString (Int64.~ n) else Int64.toString n fun float2s n = if Real64.compare (n, Real64.fromInt 0) = LESS then "-" ^ Real64.toString (Real64.~ n) else Real64.toString n fun toString t = case t of Int n => int2s' n | Float n => float2s n | String s => s | Char ch => str ch fun p_t_GCC t = case t of Int n => string (int2s n) | Float n => string (float2s n) | String s => box [string "\"", string (String.toString s), string "\""] | Char ch => box [string "'", string (String.toString (str ch)), string "'"] fun equal x = case x of (Int n1, Int n2) => n1 = n2 | (Float n1, Float n2) => Real64.== (n1, n2) | (String s1, String s2) => s1 = s2 | (Char ch1, Char ch2) => ch1 = ch2 | _ => false fun compare (p1, p2) = case (p1, p2) of (Int n1, Int n2) => Int64.compare (n1, n2) | (Int _, _) => LESS | (_, Int _) => GREATER | (Float n1, Float n2) => Real64.compare (n1, n2) | (Float _, _) => LESS | (_, Float _) => GREATER | (String n1, String n2) => String.compare (n1, n2) | (String _, _) => LESS | (_, String _) => GREATER | (Char ch1, Char ch2) => Char.compare (ch1, ch2) end