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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
%%
%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
| CON | LTYPE | VAL
| TYPE | NAME
| ARROW | LARROW | DARROW
| FN | PLUSPLUS | DOLLAR
| STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE
%nonterm
file of decl list
| decls of decl list
| decl of decl
| 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
| cexp of con
| capps of con
| cterm of con
| ident of con
| rcon of (con * con) list
| rcone of (con * con) list
| eexp of exp
| eapps of exp
| eterm of exp
| rexp of (con * exp) list
%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 DOLLAR
%left DOT
%%
file : decls (decls)
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 SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
| VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
| 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))
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))
| CSYMBOL (SgnVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
| 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))
| FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
(SgiStr (CSYMBOL1,
(SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
s (FUNCTORleft, sgn2right))
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 : 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))
| 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 DCOLON kind DARROW cexp (CAbs (SYMBOL, kind, cexp), s (FNleft, 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)
cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
| LBRACK rcon RBRACK (CRecord rcon, 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))
rcon : ([])
| ident EQ cexp ([(ident, cexp)])
| ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
rcone : ([])
| ident COLON cexp ([(ident, cexp)])
| ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
| SYMBOL (CVar ([], SYMBOL), s (SYMBOLleft, SYMBOLright))
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))
| 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))
| INT (EPrim (Prim.Int INT), s (INTleft, INTright))
| FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
| STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
rexp : ([])
| ident EQ eexp ([(ident, eexp)])
| ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)
|
