adamc@1: (* Copyright (c) 2008, Adam Chlipala
adamc@1:  * All rights reserved.
adamc@1:  *
adamc@1:  * Redistribution and use in source and binary forms, with or without
adamc@1:  * modification, are permitted provided that the following conditions are met:
adamc@1:  *
adamc@1:  * - Redistributions of source code must retain the above copyright notice,
adamc@1:  *   this list of conditions and the following disclaimer.
adamc@1:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@1:  *   this list of conditions and the following disclaimer in the documentation
adamc@1:  *   and/or other materials provided with the distribution.
adamc@1:  * - The names of contributors may not be used to endorse or promote products
adamc@1:  *   derived from this software without specific prior written permission.
adamc@1:  *
adamc@1:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@1:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@1:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@1:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@1:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@1:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@1:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@1:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@1:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@1:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@1:  * POSSIBILITY OF SUCH DAMAGE.
adamc@1:  *)
adamc@1: 
adamc@1: (* Grammar for Laconic/Web programs *)
adamc@1: 
adamc@4: open Source
adamc@1: 
adamc@1: val s = ErrorMsg.spanOf
adamc@1: 
adamc@1: %%
adamc@1: %header (functor LacwebLrValsFn(structure Token : TOKEN))
adamc@1: 
adamc@1: %term 
adamc@1:    EOF
adamc@14:  | STRING of string | INT of Int64.int | FLOAT of Real64.real
adamc@1:  | SYMBOL of string | CSYMBOL of string
adamc@1:  | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
adamc@18:  | EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH | UNDER | UNDERUNDER
adamc@8:  | CON | LTYPE | VAL
adamc@7:  | TYPE | NAME
adamc@1:  | ARROW | LARROW | DARROW
adamc@1:  | FN | PLUSPLUS | DOLLAR
adamc@30:  | STRUCTURE | SIGNATURE | STRUCT | SIG | END
adamc@1: 
adamc@30: %nonterm
adamc@1:    file of decl list
adamc@1:  | decls of decl list
adamc@1:  | decl of decl
adamc@1: 
adamc@30:  | sgn of sgn
adamc@30:  | sgi of sgn_item
adamc@30:  | sgis of sgn_item list
adamc@30: 
adamc@30:  | str of str
adamc@30: 
adamc@1:  | kind of kind
adamc@1:  | kcolon of explicitness
adamc@1: 
adamc@34:  | path of string list * string
adamc@34:  | spath of str
adamc@34: 
adamc@1:  | cexp of con
adamc@1:  | capps of con
adamc@1:  | cterm of con
adamc@1:  | ident of con
adamc@1:  | rcon of (con * con) list
adamc@1:  | rcone of (con * con) list
adamc@1: 
adamc@8:  | eexp of exp
adamc@8:  | eapps of exp
adamc@8:  | eterm of exp
adamc@12:  | rexp of (con * exp) list
adamc@8: 
adamc@1: %verbose                                (* print summary of errors *)
adamc@1: %pos int                                (* positions *)
adamc@1: %start file
adamc@1: %pure
adamc@1: %eop EOF
adamc@1: %noshift EOF
adamc@1: 
adamc@1: %name Lacweb
adamc@1: 
adamc@1: %nonassoc DARROW
adamc@1: %nonassoc COLON
adamc@6: %nonassoc DCOLON TCOLON
adamc@1: %right COMMA
adamc@1: %right ARROW LARROW
adamc@1: %right PLUSPLUS
adamc@1: %nonassoc DOLLAR
adamc@1: %left DOT
adamc@1: 
adamc@1: %%
adamc@1: 
adamc@1: file   : decls                          (decls)
adamc@1: 
adamc@1: decls  :                                ([])
adamc@1:        | decl decls                     (decl :: decls)
adamc@1: 
adamc@1: decl   : CON SYMBOL EQ cexp             (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1:        | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7:        | LTYPE SYMBOL EQ cexp           (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7:                                          s (LTYPEleft, cexpright))
adamc@8:        | VAL SYMBOL EQ eexp             (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8:        | VAL SYMBOL COLON cexp EQ eexp  (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1: 
adamc@30:        | SIGNATURE CSYMBOL EQ sgn       (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30:        | STRUCTURE CSYMBOL EQ str       (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30:        | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@30: 
adamc@30: sgn    : SIG sgis END                   (SgnConst sgis, s (SIGleft, ENDright))
adamc@30:        | CSYMBOL                        (SgnVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@30: 
adamc@30: sgi    : CON SYMBOL DCOLON kind         (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30:        | LTYPE SYMBOL                   (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30:                                          s (LTYPEleft, SYMBOLright))
adamc@30:        | CON SYMBOL EQ cexp             (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30:        | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30:        | LTYPE SYMBOL EQ cexp           (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30:                                          s (LTYPEleft, cexpright))
adamc@30:        | VAL SYMBOL COLON cexp          (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30: 
adamc@30:        | STRUCTURE CSYMBOL COLON sgn    (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@30: 
adamc@30: sgis   :                                ([])
adamc@30:        | sgi sgis                       (sgi :: sgis)
adamc@30: 
adamc@30: str    : STRUCT decls END               (StrConst decls, s (STRUCTleft, ENDright))
adamc@34:        | spath                          (spath)
adamc@34: 
adamc@34: spath  : CSYMBOL                        (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34:        | spath DOT CSYMBOL              (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30: 
adamc@1: kind   : TYPE                           (KType, s (TYPEleft, TYPEright))
adamc@1:        | NAME                           (KName, s (NAMEleft, NAMEright))
adamc@1:        | LBRACE kind RBRACE             (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1:        | kind ARROW kind                (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1:        | LPAREN kind RPAREN             (#1 kind, s (LPARENleft, RPARENright))
adamc@18:        | UNDERUNDER                     (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1: 
adamc@1: capps  : cterm                          (cterm)
adamc@1:        | capps cterm                    (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1: 
adamc@1: cexp   : capps                          (capps)
adamc@1:        | cexp ARROW cexp                (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15:        | SYMBOL kcolon kind ARROW cexp  (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1: 
adamc@1:        | cexp PLUSPLUS cexp             (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1: 
adamc@8:        | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, kind, cexp), s (FNleft, cexpright))
adamc@1: 
adamc@8:        | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6: 
adamc@18:        | UNDER DCOLON kind              (CWild kind, s (UNDERleft, UNDERright))
adamc@18: 
adamc@1: kcolon : DCOLON                         (Explicit)
adamc@1:        | TCOLON                         (Implicit)
adamc@1: 
adamc@34: path   : SYMBOL                         ([], SYMBOL)
adamc@34:        | CSYMBOL DOT path               (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34: 
adamc@1: cterm  : LPAREN cexp RPAREN             (#1 cexp, s (LPARENleft, RPARENright))
adamc@1:        | LBRACK rcon RBRACK             (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@1:        | LBRACE rcone RBRACE            (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1: 					 s (LBRACEleft, RBRACEright))
adamc@1:        | DOLLAR cterm                   (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1:        | HASH CSYMBOL                   (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1: 
adamc@34:        | path                           (CVar path, s (pathleft, pathright))
adamc@18:        | UNDER                          (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@1: 
adamc@1: rcon   :                                ([])
adamc@1:        | ident EQ cexp                  ([(ident, cexp)])
adamc@1:        | ident EQ cexp COMMA rcon       ((ident, cexp) :: rcon)
adamc@1: 
adamc@1: rcone  :                                ([])
adamc@1:        | ident COLON cexp               ([(ident, cexp)])
adamc@1:        | ident COLON cexp COMMA rcone   ((ident, cexp) :: rcone)
adamc@1: 
adamc@1: ident  : CSYMBOL                        (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34:        | SYMBOL                         (CVar ([], SYMBOL), s (SYMBOLleft, SYMBOLright))
adamc@8: 
adamc@8: eapps  : eterm                          (eterm)
adamc@8:        | eapps eterm                    (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8:        | eapps LBRACK cexp RBRACK       (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8: 
adamc@8: eexp   : eapps                          (eapps)
adamc@8:        | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8:        | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8:        | FN SYMBOL DARROW eexp          (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@8: 
adamc@8:        | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12:        | eterm DOT ident                (EField (eterm, ident), s (etermleft, identright))
adamc@8: 
adamc@8: eterm  : LPAREN eexp RPAREN             (#1 eexp, s (LPARENleft, RPARENright))
adamc@8: 
adamc@34:        | path                           (EVar path, s (pathleft, pathright))
adamc@12:        | LBRACE rexp RBRACE             (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12: 
adamc@14:        | INT                            (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14:        | FLOAT                          (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14:        | STRING                         (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14: 
adamc@12: rexp   :                                ([])
adamc@12:        | ident EQ eexp                  ([(ident, eexp)])
adamc@12:        | ident EQ eexp COMMA rexp       ((ident, eexp) :: rexp)