+(* HCoop Domtool (http://hcoop.sourceforge.net/)
+ * Copyright (c) 2006, Adam Chlipala
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *)
+
+(* Pretty-printing Domtool configuration file ASTs for HTML *)
+
+structure HtmlPrint :> HTML_PRINT = struct
+
+open Ast Order
+
+val prov : providers option ref = ref NONE
+fun setProviders p = prov := SOME p
+
+structure TextToken = struct
+type token = string
+type style = HTMLDev.style
+fun string t = t
+fun style t = HTMLDev.styleTT
+fun size t = String.size t
+end
+
+structure SM = PPStreamFn(structure Token = TextToken
+ structure Device = HTMLDev)
+
+structure PD = PPDescFn(SM)
+open PD
+
+fun dBox ds = hovBox (PPS.Rel 1, ds)
+fun dvBox ds = vBox (PPS.Rel 0, ds)
+fun ivBox ds = vBox (PPS.Rel 1, ds)
+
+fun keyword s = style (HTMLDev.styleB, [string s])
+val punct = string
+
+fun modify file =
+ let
+ val file' = #file (OS.Path.splitDirFile file)
+ val file' = #base (OS.Path.splitBaseExt file')
+ in
+ file'
+ end
+
+fun context s =
+ case providesContext (valOf (!prov), s) of
+ NONE => string s
+ | SOME m => style (HTMLDev.link (modify m ^ ".html#C_" ^ s), [string s])
+fun typ s =
+ case providesType (valOf (!prov), s) of
+ NONE => string s
+ | SOME m => style (HTMLDev.link (modify m ^ ".html#T_" ^ s), [string s])
+fun exp s =
+ case providesValue (valOf (!prov), s) of
+ NONE => string s
+ | SOME m => style (HTMLDev.link (modify m ^ ".html#V_" ^ s), [string s])
+
+val field = string
+val lit = string
+val ident = string
+
+fun parenIf pn ds =
+ if pn then
+ dBox (punct "(" :: ds @ [punct ")"])
+ else
+ dBox ds
+
+fun p_pred' pn (p, _) =
+ case p of
+ CRoot => keyword "Root"
+ | CConst s => context s
+ | CPrefix p => dBox [punct "^", p_pred' true p]
+ | CNot p => dBox [punct "!", p_pred' true p]
+ | CAnd (p1, p2) =>
+ parenIf pn [p_pred' true p1, space 1, punct "&", space 1, p_pred' true p2]
+
+val p_pred = p_pred' false
+
+fun p_predBoxed p = dBox [punct "[", p_pred p, punct "]"]
+
+fun p_typ' pn (t, _) =
+ case t of
+ TBase s => typ s
+ | TList t => dBox [punct "[", p_typ' false t, punct "]"]
+ | TArrow (t1, t2) =>
+ parenIf pn [p_typ' true t1, space 1, punct "->", space 1, p_typ' true t2]
+ | TAction (p, r1, r2) =>
+ parenIf pn [p_predBoxed p, space 1, p_record r1, space 1,
+ punct "=>", space 1, p_record r2]
+ | TNested (p, t) =>
+ parenIf pn [p_pred' false p, space 1, punct "=>", space 1, p_typ' false t]
+
+ | TError => keyword "<error>"
+ | TUnif (_, ref (SOME t)) => p_typ' pn t
+ | TUnif (name, ref NONE) => string ("<" ^ name ^ ">")
+
+and p_record r =
+ case StringMap.foldri (fn (name, t, d) =>
+ SOME (case d of
+ NONE => dBox [field name, space 1,
+ punct ":", space 1, p_typ t]
+ | SOME d => dBox [dBox [field name, space 1,
+ punct ":", space 1, p_typ t],
+ punct ",", space 1, d]))
+ NONE r of
+ NONE => punct "{}"
+ | SOME d => dBox [punct "{", d, punct "}"]
+
+and p_typ t = p_typ' false t
+
+fun p_exp (e, _) =
+ case e of
+ EInt n => lit (Int.toString n)
+ | EString s => lit (String.concat ["\"", String.toString s, "\""])
+ | EList es =>
+ (case foldr (fn (e, d) =>
+ SOME (case d of
+ NONE => p_exp e
+ | SOME d => dBox [p_exp e, punct ",", space 1, d]))
+ NONE es of
+ NONE => punct "[]"
+ | SOME d => dBox [punct "[", d, punct "]"])
+
+ | ELam (x, NONE, e) => dBox [punct "(\\", space 1, exp x, space 1,
+ punct "->", space 1, p_exp e, punct ")"]
+ | ELam (x, SOME t, e) => dBox [punct "(\\", space 1, exp x, space 1,
+ punct ":", space 1,
+ dBox [punct "(", p_typ t, punct ")"],
+ space 1, punct "->", space 1, p_exp e, punct ")"]
+
+ | EVar x => exp x
+ | EApp (e1, e2) => dBox [punct "(", p_exp e1, break {nsp = 1, offset = 0}, p_exp e2, punct ")"]
+
+ | ESkip => keyword "_"
+ | ESet (x, e) => dBox [exp x, space 1, punct "=", space 1, p_exp e]
+ | EGet (x1, x2, e) => dBox [dBox [exp x1, space 1, punct "<-",
+ space 1, exp x2, punct ";", space 1],
+ p_exp e]
+ | ESeq es => dBox (valOf (foldr (fn (e, NONE) => SOME [p_exp e]
+ | (e, SOME ds) => SOME (dBox [p_exp e, punct ";", newline] :: ds))
+ NONE es))
+ | ELocal (e1, e2) => dBox [keyword "let", space 1,
+ p_exp e1, space 1,
+ keyword "in", space 1,
+ p_exp e2, space 1,
+ keyword "end"]
+ | EWith (e1, (ESkip, _)) => dBox [p_exp e1, space 1, keyword "with", space 1, keyword "end"]
+ | EWith (e1, e2) => dBox [p_exp e1, space 1, keyword "with", p_exp e2, space 1, keyword "end"]
+
+fun p_decl d =
+ case d of
+ DExternType name => style (HTMLDev.anchor ("T_" ^ name),
+ [dBox [keyword "extern", space 1,
+ keyword "type", space 1,
+ ident name]])
+ | DExternVal (name, t) => style (HTMLDev.anchor ("V_" ^ name),
+ [dBox [keyword "extern", space 1,
+ keyword "val", space 1,
+ ident name, space 1,
+ string ":", space 1,
+ p_typ t]])
+ | DVal (name, NONE, _) => string "Unannotated val declaration!"
+ | DVal (name, SOME t, _) => style (HTMLDev.anchor ("V_" ^ name),
+ [dBox [keyword "val", space 1,
+ ident name, space 1,
+ punct ":", space 1,
+ p_typ t]])
+ | DContext name => style (HTMLDev.anchor ("C_" ^ name),
+ [dBox [keyword "context", space 1,
+ ident name]])
+
+fun output d =
+ let
+ val dev = HTMLDev.openDev {wid = 80,
+ textWid = NONE}
+ val myStream = SM.openStream dev
+ in
+ description (myStream, d);
+ SM.flushStream myStream;
+ HTMLDev.done dev
+ end
+
+end
HCoop / hcoop / domtool2.git / commitdiff