adamc@14: (* Copyright (c) 2008, Adam Chlipala
adamc@14:  * All rights reserved.
adamc@14:  *
adamc@14:  * Redistribution and use in source and binary forms, with or without
adamc@14:  * modification, are permitted provided that the following conditions are met:
adamc@14:  *
adamc@14:  * - Redistributions of source code must retain the above copyright notice,
adamc@14:  *   this list of conditions and the following disclaimer.
adamc@14:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@14:  *   this list of conditions and the following disclaimer in the documentation
adamc@14:  *   and/or other materials provided with the distribution.
adamc@14:  * - The names of contributors may not be used to endorse or promote products
adamc@14:  *   derived from this software without specific prior written permission.
adamc@14:  *
adamc@14:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@14:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@14:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@14:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@14:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@14:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@14:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@14:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@14:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@14:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@14:  * POSSIBILITY OF SUCH DAMAGE.
adamc@14:  *)
adamc@14: 
adamc@14: structure Prim :> PRIM = struct
adamc@14: 
adamc@14: datatype t =
adamc@14:          Int of Int64.int
adamc@14:        | Float of Real64.real
adamc@14:        | String of string
adamc@14: 
adamc@14: open Print.PD
adamc@14: open Print
adamc@14: 
adamc@14: fun p_t t =
adamc@14:     case t of
adamc@14:         Int n => string (Int64.toString n)
adamc@14:       | Float n => string (Real64.toString n)
adamc@95:       | String s => box [string "\"", string (String.toString s), string "\""]
adamc@14: 
adamc@276: fun int2s n =
adamc@276:     if Int64.compare (n, Int64.fromInt 0) = LESS then
adamc@276:         "-" ^ Int64.toString (Int64.~ n) ^ "LL"
adamc@276:     else
adamc@276:         Int64.toString n ^ "LL"
adamc@276: 
adamc@276: fun float2s n =
adamc@276:     if Real64.compare (n, Real64.fromInt 0) = LESS then
adamc@285:         "-" ^ Real64.toString (Real64.~ n)
adamc@276:     else
adamc@285:         Real64.toString n
adamc@276: 
adamc@567: fun toString t =
adamc@567:     case t of
adamc@567:         Int n => int2s n
adamc@567:       | Float n => float2s n
adamc@567:       | String s => s
adamc@567: 
adamc@276: fun p_t_GCC t =
adamc@276:     case t of
adamc@276:         Int n => string (int2s n)
adamc@276:       | Float n => string (float2s n)
adamc@276:       | String s => box [string "\"", string (String.toString s), string "\""]
adamc@276: 
adamc@183: fun equal x =
adamc@183:     case x of
adamc@183:         (Int n1, Int n2) => n1 = n2
adamc@183:       | (Float n1, Float n2) => Real64.== (n1, n2)
adamc@183:       | (String s1, String s2) => s1 = s2
adamc@183: 
adamc@183:       | _ => false
adamc@183: 
adamc@479: fun compare (p1, p2) =
adamc@479:     case (p1, p2) of
adamc@479:         (Int n1, Int n2) => Int64.compare (n1, n2)
adamc@479:       | (Int _, _) => LESS
adamc@479:       | (_, Int _) => GREATER
adamc@479: 
adamc@479:       | (Float n1, Float n2) => Real64.compare (n1, n2)
adamc@479:       | (Float _, _) => LESS
adamc@479:       | (_, Float _) => GREATER
adamc@479: 
adamc@479:       | (String n1, String n2) => String.compare (n1, n2)
adamc@479: 
adamc@14: end