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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
| DIVIDE | GT
| CON | LTYPE | VAL | REC | AND | FOLD | UNIT | KUNIT
| TYPE | NAME
| ARROW | LARROW | DARROW
| FN | PLUSPLUS | DOLLAR | TWIDDLE
| STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
| INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS | EXPORT
| 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
| 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
| spath of str
| mpath of string list
| cexp of con
| capps of con
| cterm of con
| 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
| rexp of (con * exp) list
| xml of exp
| xmlOne of exp
| 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 DARROW
%nonassoc COLON
%nonassoc DCOLON TCOLON
%right COMMA
%right ARROW LARROW
%right PLUSPLUS
%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))
| 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))
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))
| 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))
kcolon : DCOLON (Explicit)
| TCOLON (Implicit)
path : SYMBOL ([], SYMBOL)
| CSYMBOL DOT path (let val (ms, x) = path 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))
| 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))
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))
| 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)
| LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
| eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
| path (EVar path, s (pathleft, pathright))
| 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))
| 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))
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 (
(ECApp ((EVar (["Basis"], "join"), pos),
(CWild (KRecord (KUnit, pos), pos), pos)), 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))
| BEGIN_TAG attrs DIVIDE GT (let
val pos = s (BEGIN_TAGleft, GTright)
in
(EApp ((EApp ((EApp ((EVar (["Basis"], "tag"), pos),
(ERecord attrs, pos)), pos),
(EVar ([], BEGIN_TAG), pos)),
pos),
(EApp ((EVar (["Basis"], "cdata"), pos),
(EPrim (Prim.String ""), pos)),
pos)), pos)
end)
| BEGIN_TAG attrs GT xml END_TAG(let
val pos = s (BEGIN_TAGleft, GTright)
in
if BEGIN_TAG = END_TAG then
(EApp ((EApp ((EApp ((EVar (["Basis"], "tag"), pos),
(ERecord attrs, pos)), pos),
(EVar ([], BEGIN_TAG), pos)),
pos),
xml), pos)
else
(ErrorMsg.errorAt pos "Begin and end tags don't match.";
(EFold, pos))
end)
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)
|
