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annotate src/cjr_print.sml @ 121:91027db5a07c

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Multiple arguments to web functions
author Adam Chlipala <adamc@hcoop.net>
date Sun, 13 Jul 2008 20:24:05 -0400
parents 6230bdd122e7
children 78d59cf0a0cc
rev   line source
adamc@29 1 (* Copyright (c) 2008, Adam Chlipala
adamc@29 2 * All rights reserved.
adamc@29 3 *
adamc@29 4 * Redistribution and use in source and binary forms, with or without
adamc@29 5 * modification, are permitted provided that the following conditions are met:
adamc@29 6 *
adamc@29 7 * - Redistributions of source code must retain the above copyright notice,
adamc@29 8 * this list of conditions and the following disclaimer.
adamc@29 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@29 10 * this list of conditions and the following disclaimer in the documentation
adamc@29 11 * and/or other materials provided with the distribution.
adamc@29 12 * - The names of contributors may not be used to endorse or promote products
adamc@29 13 * derived from this software without specific prior written permission.
adamc@29 14 *
adamc@29 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@29 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@29 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@29 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@29 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@29 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@29 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@29 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@29 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@29 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@29 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@29 26 *)
adamc@29 27
adamc@29 28 (* Pretty-printing C jr. *)
adamc@29 29
adamc@29 30 structure CjrPrint :> CJR_PRINT = struct
adamc@29 31
adamc@29 32 open Print.PD
adamc@29 33 open Print
adamc@29 34
adamc@29 35 open Cjr
adamc@29 36
adamc@29 37 structure E = CjrEnv
adamc@29 38 structure EM = ErrorMsg
adamc@29 39
adamc@29 40 val debug = ref false
adamc@29 41
adamc@29 42 val dummyTyp = (TNamed 0, ErrorMsg.dummySpan)
adamc@29 43
adamc@29 44 fun p_typ' par env (t, loc) =
adamc@29 45 case t of
adamc@101 46 TTop => string "void*"
adamc@109 47 | TFun (t1, t2) => parenIf par (box [p_typ' true env t2,
adamc@109 48 space,
adamc@109 49 string "(*)",
adamc@109 50 space,
adamc@109 51 string "(",
adamc@109 52 p_typ env t1,
adamc@109 53 string ")"])
adamc@29 54 | TRecord i => box [string "struct",
adamc@29 55 space,
adamc@29 56 string "__lws_",
adamc@29 57 string (Int.toString i)]
adamc@29 58 | TNamed n =>
adamc@29 59 (string ("__lwt_" ^ #1 (E.lookupTNamed env n) ^ "_" ^ Int.toString n)
adamc@29 60 handle CjrEnv.UnboundNamed _ => string ("__lwt_UNBOUND__" ^ Int.toString n))
adamc@53 61 | TFfi (m, x) => box [string "lw_", string m, string "_", string x]
adamc@29 62
adamc@29 63 and p_typ env = p_typ' false env
adamc@29 64
adamc@29 65 fun p_rel env n = string ("__lwr_" ^ #1 (E.lookupERel env n) ^ "_" ^ Int.toString (E.countERels env - n - 1))
adamc@29 66 handle CjrEnv.UnboundRel _ => string ("__lwr_UNBOUND_" ^ Int.toString (E.countERels env - n - 1))
adamc@29 67
adamc@109 68 fun p_enamed env n =
adamc@109 69 string ("__lwn_" ^ #1 (E.lookupENamed env n) ^ "_" ^ Int.toString n)
adamc@109 70 handle CjrEnv.UnboundNamed _ => string ("__lwn_UNBOUND_" ^ Int.toString n)
adamc@109 71
adamc@29 72 fun p_exp' par env (e, _) =
adamc@29 73 case e of
adamc@29 74 EPrim p => Prim.p_t p
adamc@29 75 | ERel n => p_rel env n
adamc@109 76 | ENamed n => p_enamed env n
adamc@109 77
adamc@53 78 | EFfi (m, x) => box [string "lw_", string m, string "_", string x]
adamc@53 79 | EFfiApp (m, x, es) => box [string "lw_",
adamc@53 80 string m,
adamc@53 81 string "_",
adamc@53 82 string x,
adamc@117 83 string "(ctx, ",
adamc@53 84 p_list (p_exp env) es,
adamc@53 85 string ")"]
adamc@29 86 | EApp (e1, e2) => parenIf par (box [p_exp' true env e1,
adamc@29 87 string "(",
adamc@29 88 p_exp env e2,
adamc@29 89 string ")"])
adamc@29 90
adamc@29 91 | ERecord (i, xes) => box [string "({",
adamc@29 92 space,
adamc@29 93 string "struct",
adamc@29 94 space,
adamc@29 95 string ("__lws_" ^ Int.toString i),
adamc@29 96 space,
adamc@29 97 string "__lw_tmp",
adamc@29 98 space,
adamc@29 99 string "=",
adamc@29 100 space,
adamc@29 101 string "{",
adamc@29 102 p_list (fn (_, e) =>
adamc@29 103 p_exp env e) xes,
adamc@29 104 string "};",
adamc@29 105 space,
adamc@29 106 string "__lw_tmp;",
adamc@29 107 space,
adamc@29 108 string "})" ]
adamc@29 109 | EField (e, x) =>
adamc@29 110 box [p_exp' true env e,
adamc@29 111 string ".",
adamc@29 112 string x]
adamc@29 113
adamc@117 114 | EWrite e => box [string "(lw_write(ctx, ",
adamc@102 115 p_exp env e,
adamc@102 116 string "), lw_unit_v)"]
adamc@102 117
adamc@106 118 | ESeq (e1, e2) => box [string "(",
adamc@106 119 p_exp env e1,
adamc@106 120 string ",",
adamc@106 121 space,
adamc@106 122 p_exp env e2,
adamc@106 123 string ")"]
adamc@106 124
adamc@29 125 and p_exp env = p_exp' false env
adamc@29 126
adamc@29 127 fun p_decl env ((d, _) : decl) =
adamc@29 128 case d of
adamc@29 129 DStruct (n, xts) =>
adamc@29 130 box [string "struct",
adamc@29 131 space,
adamc@29 132 string ("__lws_" ^ Int.toString n),
adamc@29 133 space,
adamc@29 134 string "{",
adamc@29 135 newline,
adamc@29 136 p_list_sep (box []) (fn (x, t) => box [p_typ env t,
adamc@29 137 space,
adamc@29 138 string x,
adamc@29 139 string ";",
adamc@29 140 newline]) xts,
adamc@29 141 string "};"]
adamc@29 142
adamc@29 143 | DVal (x, n, t, e) =>
adamc@29 144 box [p_typ env t,
adamc@29 145 space,
adamc@29 146 string ("__lwn_" ^ x ^ "_" ^ Int.toString n),
adamc@29 147 space,
adamc@29 148 string "=",
adamc@29 149 space,
adamc@29 150 p_exp env e,
adamc@29 151 string ";"]
adamc@121 152 | DFun (fx, n, args, ran, e) =>
adamc@29 153 let
adamc@121 154 val nargs = length args
adamc@121 155 val env' = foldl (fn ((x, dom), env) => E.pushERel env x dom) env args
adamc@29 156 in
adamc@106 157 box [string "static",
adamc@106 158 space,
adamc@106 159 p_typ env ran,
adamc@29 160 space,
adamc@109 161 string ("__lwn_" ^ fx ^ "_" ^ Int.toString n),
adamc@121 162 string "(",
adamc@121 163 p_list_sep (box [string ",", space]) (fn x => x)
adamc@121 164 (string "lw_context ctx" :: ListUtil.mapi (fn (i, (_, dom)) =>
adamc@121 165 box [p_typ env dom,
adamc@121 166 space,
adamc@121 167 p_rel env' (nargs - i - 1)]) args),
adamc@29 168 string ")",
adamc@29 169 space,
adamc@29 170 string "{",
adamc@29 171 newline,
adamc@29 172 box[string "return(",
adamc@29 173 p_exp env' e,
adamc@101 174 string ");"],
adamc@29 175 newline,
adamc@29 176 string "}"]
adamc@29 177 end
adamc@29 178
adamc@120 179 fun unurlify (t, loc) =
adamc@120 180 case t of
adamc@120 181 TFfi ("Basis", "int") => string "lw_unurlifyInt(&request)"
adamc@120 182 | TFfi ("Basis", "float") => string "lw_unurlifyFloat(&request)"
adamc@120 183 | TFfi ("Basis", "string") => string "lw_unurlifyString(&request)"
adamc@120 184
adamc@120 185 | TRecord 0 => string "lw_unit_v"
adamc@120 186
adamc@120 187 | _ => (ErrorMsg.errorAt loc "Unable to choose a URL decoding function";
adamc@120 188 space)
adamc@120 189
adamc@120 190 fun p_page env (s, n, ts) =
adamc@120 191 box [string "if (!strncmp(request, \"",
adamc@116 192 string (String.toString s),
adamc@120 193 string "\", ",
adamc@120 194 string (Int.toString (size s)),
adamc@120 195 string ")) {",
adamc@116 196 newline,
adamc@120 197 string "request += ",
adamc@120 198 string (Int.toString (size s)),
adamc@120 199 string ";",
adamc@116 200 newline,
adamc@120 201 string "if (*request == '/') ++request;",
adamc@119 202 newline,
adamc@120 203 box [string "{",
adamc@120 204 newline,
adamc@120 205 box (ListUtil.mapi (fn (i, t) => box [p_typ env t,
adamc@120 206 space,
adamc@120 207 string "arg",
adamc@120 208 string (Int.toString i),
adamc@120 209 space,
adamc@120 210 string "=",
adamc@120 211 space,
adamc@120 212 unurlify t,
adamc@120 213 string ";",
adamc@120 214 newline]) ts),
adamc@120 215 p_enamed env n,
adamc@120 216 string "(",
adamc@120 217 p_list_sep (box [string ",", space])
adamc@120 218 (fn x => x)
adamc@120 219 (string "ctx" :: ListUtil.mapi (fn (i, _) => string ("arg" ^ Int.toString i)) ts),
adamc@120 220 string ");",
adamc@120 221 newline,
adamc@120 222 string "return;",
adamc@120 223 newline,
adamc@120 224 string "}",
adamc@120 225 newline,
adamc@120 226 string "}"]
adamc@120 227 ]
adamc@101 228
adamc@101 229 fun p_file env (ds, ps) =
adamc@29 230 let
adamc@101 231 val (pds, env) = ListUtil.foldlMap (fn (d, env) =>
adamc@31 232 (p_decl env d,
adamc@31 233 E.declBinds env d))
adamc@101 234 env ds
adamc@101 235 val pds' = map (p_page env) ps
adamc@29 236 in
adamc@101 237 box [string "#include \"lacweb.h\"",
adamc@101 238 newline,
adamc@101 239 newline,
adamc@101 240 p_list_sep newline (fn x => x) pds,
adamc@101 241 newline,
adamc@117 242 string "void lw_handle(lw_context ctx, char *request) {",
adamc@101 243 newline,
adamc@101 244 p_list_sep newline (fn x => x) pds',
adamc@101 245 newline,
adamc@101 246 string "}",
adamc@101 247 newline]
adamc@29 248 end
adamc@29 249
adamc@29 250 end