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Diffstat (limited to 'src/mono_print.sml')
| -rw-r--r-- | src/mono_print.sml | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/mono_print.sml b/src/mono_print.sml new file mode 100644 index 00000000..a23296f9 --- /dev/null +++ b/src/mono_print.sml @@ -0,0 +1,141 @@ +(* 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. + *) + +(* Pretty-printing monomorphic Laconic/Web *) + +structure MonoPrint :> MONO_PRINT = struct + +open Print.PD +open Print + +open Mono + +structure E = MonoEnv + +val debug = ref false + +fun p_typ' par env (t, _) = + case t of + TFun (t1, t2) => parenIf par (box [p_typ' true env t1, + space, + string "->", + space, + p_typ env t2]) + | TRecord xcs => box [string "{", + p_list (fn (x, t) => + box [string x, + space, + string ":", + space, + p_typ env t]) xcs, + string "}"] + | TNamed n => + if !debug then + string (#1 (E.lookupTNamed env n) ^ "__" ^ Int.toString n) + else + string (#1 (E.lookupTNamed env n)) + +and p_typ env = p_typ' false env + +fun p_exp' par env (e, _) = + case e of + EPrim p => Prim.p_t p + | ERel n => + if !debug then + string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n) + else + string (#1 (E.lookupERel env n)) + | ENamed n => + if !debug then + string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n) + else + string (#1 (E.lookupENamed env n)) + | EApp (e1, e2) => parenIf par (box [p_exp env e1, + space, + p_exp' true env e2]) + | EAbs (x, t, e) => parenIf par (box [string "fn", + space, + string x, + space, + string ":", + space, + p_typ env t, + space, + string "=>", + space, + p_exp (E.pushERel env x t) e]) + + | ERecord xes => box [string "{", + p_list (fn (x, e) => + box [string x, + space, + string "=", + space, + p_exp env e]) xes, + string "}"] + | EField (e, x) => + box [p_exp' true env e, + string ".", + string x] + +and p_exp env = p_exp' false env + +fun p_decl env ((d, _) : decl) = + case d of + DVal (x, n, t, e) => + let + val xp = if !debug then + box [string x, + string "__", + string (Int.toString n)] + else + string x + in + box [string "val", + space, + xp, + space, + string ":", + space, + p_typ env t, + space, + string "=", + space, + p_exp env e] + end + +fun p_file env file = + let + val (_, pds) = ListUtil.mapfoldl (fn (d, env) => + (E.declBinds env d, + p_decl env d)) + env file + in + p_list_sep newline (fn x => x) pds + end + +end |