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|
(* 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.
*)
(* Grammar for Laconic/Web programs *)
open Source
val s = ErrorMsg.spanOf
fun uppercaseFirst "" = ""
| uppercaseFirst s = str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE)
%%
%header (functor LacwebLrValsFn(structure Token : TOKEN))
%term
EOF
| STRING of string | INT of Int64.int | FLOAT of Real64.real
| SYMBOL of string | CSYMBOL of string
| LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
| EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH | UNDER | UNDERUNDER | BAR
| DIVIDE | GT | DOTDOTDOT
| CON | LTYPE | VAL | REC | AND | FOLD | UNIT | KUNIT
| DATATYPE | OF
| TYPE | NAME
| ARROW | LARROW | DARROW | STAR
| FN | PLUSPLUS | MINUSMINUS | DOLLAR | TWIDDLE
| STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
| INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS | EXPORT
| CASE | IF | THEN | ELSE
| XML_BEGIN of string | XML_END
| NOTAGS of string
| BEGIN_TAG of string | END_TAG of string
%nonterm
file of decl list
| decls of decl list
| decl of decl
| vali of string * con option * exp
| valis of (string * con option * exp) list
| dargs of string list
| barOpt of unit
| dcons of (string * con option) list
| dcon of string * con option
| sgn of sgn
| sgntm of sgn
| sgi of sgn_item
| sgis of sgn_item list
| str of str
| kind of kind
| kcolon of explicitness
| path of string list * string
| cpath of string list * string
| spath of str
| mpath of string list
| cexp of con
| capps of con
| cterm of con
| ctuple of con list
| ident of con
| rcon of (con * con) list
| rconn of (con * con) list
| rcone of (con * con) list
| eexp of exp
| eapps of exp
| eterm of exp
| etuple of exp list
| rexp of (con * exp) list
| xml of exp
| xmlOne of exp
| tag of string * exp
| tagHead of string * exp
| branch of pat * exp
| branchs of (pat * exp) list
| pat of pat
| pterm of pat
| rpat of (string * pat) list * bool
| ptuple of pat list
| attrs of (con * exp) list
| attr of con * exp
| attrv of exp
%verbose (* print summary of errors *)
%pos int (* positions *)
%start file
%pure
%eop EOF
%noshift EOF
%name Lacweb
%nonassoc IF THEN ELSE
%nonassoc DARROW
%nonassoc COLON
%nonassoc DCOLON TCOLON
%right COMMA
%right ARROW LARROW
%right PLUSPLUS MINUSMINUS
%right STAR
%nonassoc TWIDDLE
%nonassoc DOLLAR
%left DOT
%%
file : decls (decls)
| SIG sgis ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
s (SIGleft, sgisright))])
decls : ([])
| decl decls (decl :: decls)
decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
| CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
| LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
s (LTYPEleft, cexpright))
| DATATYPE SYMBOL dargs EQ barOpt dcons(DDatatype (SYMBOL, dargs, dcons), s (DATATYPEleft, dconsright))
| DATATYPE SYMBOL dargs EQ DATATYPE CSYMBOL DOT path
(case dargs of
[] => (DDatatypeImp (SYMBOL, CSYMBOL :: #1 path, #2 path), s (DATATYPEleft, pathright))
| _ => raise Fail "Arguments specified for imported datatype")
| VAL vali (DVal vali, s (VALleft, valiright))
| VAL REC valis (DValRec valis, s (VALleft, valisright))
| SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
| STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
| STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
| FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
(DStr (CSYMBOL1, NONE,
(StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
s (FUNCTORleft, strright))
| FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
(DStr (CSYMBOL1, NONE,
(StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
s (FUNCTORleft, strright))
| EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
| OPEN mpath (case mpath of
[] => raise Fail "Impossible mpath parse [1]"
| m :: ms => (DOpen (m, ms), s (OPENleft, mpathright)))
| OPEN CONSTRAINTS mpath (case mpath of
[] => raise Fail "Impossible mpath parse [3]"
| m :: ms => (DOpenConstraints (m, ms), s (OPENleft, mpathright)))
| CONSTRAINT cterm TWIDDLE cterm (DConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
| EXPORT spath (DExport spath, s (EXPORTleft, spathright))
dargs : ([])
| SYMBOL dargs (SYMBOL :: dargs)
barOpt : ()
| BAR ()
dcons : dcon ([dcon])
| dcon BAR dcons (dcon :: dcons)
dcon : CSYMBOL (CSYMBOL, NONE)
| CSYMBOL OF cexp (CSYMBOL, SOME cexp)
vali : SYMBOL EQ eexp (SYMBOL, NONE, eexp)
| SYMBOL COLON cexp EQ eexp (SYMBOL, SOME cexp, eexp)
valis : vali ([vali])
| vali AND valis (vali :: valis)
sgn : sgntm (sgntm)
| FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
(SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))
sgntm : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
| mpath (case mpath of
[] => raise Fail "Impossible mpath parse [2]"
| [x] => SgnVar x
| m :: ms => SgnProj (m,
List.take (ms, length ms - 1),
List.nth (ms, length ms - 1)),
s (mpathleft, mpathright))
| sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
| sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
| LPAREN sgn RPAREN (sgn)
sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
| LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
s (LTYPEleft, SYMBOLright))
| CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
| CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
| LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
s (LTYPEleft, cexpright))
| DATATYPE SYMBOL dargs EQ barOpt dcons(SgiDatatype (SYMBOL, dargs, dcons), s (DATATYPEleft, dconsright))
| DATATYPE SYMBOL dargs EQ DATATYPE CSYMBOL DOT path
(case dargs of
[] => (SgiDatatypeImp (SYMBOL, CSYMBOL :: #1 path, #2 path), s (DATATYPEleft, pathright))
| _ => raise Fail "Arguments specified for imported datatype")
| VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
| STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
| SIGNATURE CSYMBOL EQ sgn (SgiSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
| FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
(SgiStr (CSYMBOL1,
(SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
s (FUNCTORleft, sgn2right))
| INCLUDE sgn (SgiInclude sgn, s (INCLUDEleft, sgnright))
| CONSTRAINT cterm TWIDDLE cterm (SgiConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
sgis : ([])
| sgi sgis (sgi :: sgis)
str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
| spath (spath)
| FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
(StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
| FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
(StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
| spath LPAREN str RPAREN (StrApp (spath, str), s (spathleft, RPARENright))
spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
| spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
kind : TYPE (KType, s (TYPEleft, TYPEright))
| NAME (KName, s (NAMEleft, NAMEright))
| LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
| kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
| LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
| KUNIT (KUnit, s (KUNITleft, KUNITright))
| UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
capps : cterm (cterm)
| capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
cexp : capps (capps)
| cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
| SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
| cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
| FN SYMBOL DARROW cexp (CAbs (SYMBOL, NONE, cexp), s (FNleft, cexpright))
| FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, SOME kind, cexp), s (FNleft, cexpright))
| cterm TWIDDLE cterm DARROW cexp(CDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
| cterm TWIDDLE cterm ARROW cexp (TDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
| LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
| UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
| ctuple (let
val loc = s (ctupleleft, ctupleright)
in
(TRecord (CRecord (ListUtil.mapi (fn (i, c) =>
((CName (Int.toString (i + 1)), loc),
c)) ctuple),
loc), loc)
end)
kcolon : DCOLON (Explicit)
| TCOLON (Implicit)
path : SYMBOL ([], SYMBOL)
| CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
cpath : CSYMBOL ([], CSYMBOL)
| CSYMBOL DOT cpath (let val (ms, x) = cpath in (CSYMBOL :: ms, x) end)
mpath : CSYMBOL ([CSYMBOL])
| CSYMBOL DOT mpath (CSYMBOL :: mpath)
cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
| LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
| LBRACK rconn RBRACK (CRecord rconn, s (LBRACKleft, RBRACKright))
| LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
s (LBRACEleft, RBRACEright))
| DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
| HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
| HASH INT (CName (Int64.toString INT), s (HASHleft, INTright))
| path (CVar path, s (pathleft, pathright))
| UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
| FOLD (CFold, s (FOLDleft, FOLDright))
| UNIT (CUnit, s (UNITleft, UNITright))
ctuple : capps STAR capps ([capps1, capps2])
| capps STAR ctuple (capps :: ctuple)
rcon : ([])
| ident EQ cexp ([(ident, cexp)])
| ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
rconn : ident ([(ident, (CUnit, s (identleft, identright)))])
| ident COMMA rconn ((ident, (CUnit, s (identleft, identright))) :: rconn)
rcone : ([])
| ident COLON cexp ([(ident, cexp)])
| ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
| INT (CName (Int64.toString INT), s (INTleft, INTright))
| path (CVar path, s (pathleft, pathright))
eapps : eterm (eterm)
| eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
| eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
eexp : eapps (eapps)
| FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
| FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
| FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
| LBRACK cterm TWIDDLE cterm RBRACK DARROW eexp(EDisjoint (cterm1, cterm2, eexp), s (LBRACKleft, RBRACKright))
| FN UNIT DARROW eexp (let
val loc = s (FNleft, eexpright)
in
(EAbs ("_", SOME (TRecord (CRecord [], loc), loc), eexp), loc)
end)
| eexp COLON cexp (EAnnot (eexp, cexp), s (eexpleft, cexpright))
| eexp MINUSMINUS cexp (ECut (eexp, cexp), s (eexpleft, cexpright))
| CASE eexp OF barOpt branch branchs (ECase (eexp, branch :: branchs), s (CASEleft, branchsright))
| IF eexp THEN eexp ELSE eexp (let
val loc = s (IFleft, eexp3right)
in
(ECase (eexp1, [((PCon (["Basis"], "True", NONE), loc), eexp2),
((PCon (["Basis"], "False", NONE), loc), eexp3)]), loc)
end)
eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
| LPAREN etuple RPAREN (let
val loc = s (LPARENleft, RPARENright)
in
(ERecord (ListUtil.mapi (fn (i, e) =>
((CName (Int.toString (i + 1)), loc),
e)) etuple), loc)
end)
| path (EVar path, s (pathleft, pathright))
| cpath (EVar cpath, s (cpathleft, cpathright))
| LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
| UNIT (ERecord [], s (UNITleft, UNITright))
| INT (EPrim (Prim.Int INT), s (INTleft, INTright))
| FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
| STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
| path DOT ident (EField ((EVar path, s (pathleft, pathright)), ident), s (pathleft, identright))
| FOLD (EFold, s (FOLDleft, FOLDright))
| XML_BEGIN xml XML_END (xml)
| XML_BEGIN XML_END (EApp ((EVar (["Basis"], "cdata"), s (XML_BEGINleft, XML_ENDright)),
(EPrim (Prim.String ""), s (XML_BEGINleft, XML_ENDright))),
s (XML_BEGINleft, XML_ENDright))
etuple : eexp COMMA eexp ([eexp1, eexp2])
| eexp COMMA etuple (eexp :: etuple)
branch : pat DARROW eexp (pat, eexp)
branchs: ([])
| BAR branch branchs (branch :: branchs)
pat : pterm (pterm)
| cpath pterm (PCon (#1 cpath, #2 cpath, SOME pterm), s (cpathleft, ptermright))
pterm : SYMBOL (PVar SYMBOL, s (SYMBOLleft, SYMBOLright))
| cpath (PCon (#1 cpath, #2 cpath, NONE), s (cpathleft, cpathright))
| UNDER (PWild, s (UNDERleft, UNDERright))
| INT (PPrim (Prim.Int INT), s (INTleft, INTright))
| STRING (PPrim (Prim.String STRING), s (STRINGleft, STRINGright))
| LPAREN pat RPAREN (pat)
| LBRACE RBRACE (PRecord ([], false), s (LBRACEleft, RBRACEright))
| UNIT (PRecord ([], false), s (UNITleft, UNITright))
| LBRACE rpat RBRACE (PRecord rpat, s (LBRACEleft, RBRACEright))
| LPAREN ptuple RPAREN (PRecord (ListUtil.mapi (fn (i, p) => (Int.toString (i + 1), p)) ptuple,
false),
s (LPARENleft, RPARENright))
rpat : CSYMBOL EQ pat ([(CSYMBOL, pat)], false)
| DOTDOTDOT ([], true)
| CSYMBOL EQ pat COMMA rpat ((CSYMBOL, pat) :: #1 rpat, #2 rpat)
ptuple : pat COMMA pat ([pat1, pat2])
| pat COMMA ptuple (pat :: ptuple)
rexp : ([])
| ident EQ eexp ([(ident, eexp)])
| ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)
xml : xmlOne xml (let
val pos = s (xmlOneleft, xmlright)
in
(EApp ((EApp (
(EVar (["Basis"], "join"), pos),
xmlOne), pos),
xml), pos)
end)
| xmlOne (xmlOne)
xmlOne : NOTAGS (EApp ((EVar (["Basis"], "cdata"), s (NOTAGSleft, NOTAGSright)),
(EPrim (Prim.String NOTAGS), s (NOTAGSleft, NOTAGSright))),
s (NOTAGSleft, NOTAGSright))
| tag DIVIDE GT (let
val pos = s (tagleft, GTright)
in
(EApp (#2 tag,
(EApp ((EVar (["Basis"], "cdata"), pos),
(EPrim (Prim.String ""), pos)),
pos)), pos)
end)
| tag GT xml END_TAG (let
val pos = s (tagleft, GTright)
in
if #1 tag = END_TAG then
if END_TAG = "lform" then
(EApp ((EVar (["Basis"], "lform"), pos),
xml), pos)
else
(EApp (#2 tag, xml), pos)
else
(ErrorMsg.errorAt pos "Begin and end tags don't match.";
(EFold, pos))
end)
| LBRACE eexp RBRACE (eexp)
tag : tagHead attrs (let
val pos = s (tagHeadleft, attrsright)
in
(#1 tagHead,
(EApp ((EApp ((EVar (["Basis"], "tag"), pos),
(ERecord attrs, pos)), pos),
(EApp (#2 tagHead,
(ERecord [], pos)), pos)),
pos))
end)
tagHead: BEGIN_TAG (let
val pos = s (BEGIN_TAGleft, BEGIN_TAGright)
in
(BEGIN_TAG,
(EVar ([], BEGIN_TAG), pos))
end)
| tagHead LBRACE cexp RBRACE (#1 tagHead, (ECApp (#2 tagHead, cexp), s (tagHeadleft, RBRACEright)))
attrs : ([])
| attr attrs (attr :: attrs)
attr : SYMBOL EQ attrv ((CName (uppercaseFirst SYMBOL), s (SYMBOLleft, SYMBOLright)), attrv)
attrv : INT (EPrim (Prim.Int INT), s (INTleft, INTright))
| FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
| STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
| LBRACE eexp RBRACE (eexp)
|
