CristalCaveGem » LustreC

%{

(********************************************************************)

(*                                                                  *)

(*  The LustreC compiler toolset   /  The LustreC Development Team  *)

(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)

(*                                                                  *)

(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)

(*  under the terms of the GNU Lesser General Public License        *)

(*  version 2.1.                                                    *)

(*                                                                  *)

(********************************************************************)

  open Utils

  open Corelang

  open LustreSpec

  let mkexpr x = mkexpr (Location.symbol_rloc ()) x

  let mkpredef_call x = mkpredef_call (Location.symbol_rloc ()) x

  let mkpredef_unary_call x = mkpredef_unary_call (Location.symbol_rloc ()) x

  let mkeexpr x = mkeexpr (Location.symbol_rloc ()) x

  (*

  let mkepredef_call x = mkepredef_call (Location.symbol_rloc ()) x

  let mkepredef_unary_call x = mkepredef_unary_call (Location.symbol_rloc ()) x

  *)

  let mktyp x = mktyp (Location.symbol_rloc ()) x

  let mkvar_decl x = mkvar_decl (Location.symbol_rloc ()) x

  let mkclock x = mkclock (Location.symbol_rloc ()) x

%}

%token <int> INT

%token <string> REAL

%token <float> FLOAT

%token <string> STRING

%token TRUE FALSE STATELESS ASSERT INCLUDE QUOTE

%token <string> IDENT

%token LPAR RPAR SCOL COL COMMA COLCOL

%token AMPERAMPER BARBAR NOT POWER

%token IF THEN ELSE

%token UCLOCK DCLOCK PHCLOCK TAIL

%token MERGE FBY WHEN WHENNOT EVERY

%token NODE LET TEL RETURNS VAR IMPORTED SENSOR ACTUATOR WCET TYPE CONST

%token TINT TFLOAT TREAL TBOOL TCLOCK

%token RATE DUE

%token EQ LT GT LTE GTE NEQ

%token AND OR XOR IMPL

%token MULT DIV MOD

%token MINUS PLUS UMINUS

%token PRE ARROW

%token EOF

%token REQUIRES ENSURES OBSERVER

%token INVARIANT BEHAVIOR ASSUMES

%token EXISTS FORALL

%nonassoc prec_exists prec_forall

%nonassoc COMMA POWER

%left MERGE IF

%nonassoc ELSE

%right ARROW FBY

%left WHEN WHENNOT UCLOCK DCLOCK PHCLOCK

%right COLCOL

%right IMPL

%left OR XOR BARBAR

%left AND AMPERAMPER

%left NOT

%nonassoc EQ LT GT LTE GTE NEQ

%left MINUS PLUS

%left MULT DIV MOD

%left PRE 

%nonassoc UMINUS

%start lustre_annot

%start lustre_spec

%type <LustreSpec.node_annot> lustre_spec

%%

lustre_spec:

| contract EOF { $1 }

contract:

requires ensures behaviors { { requires = $1; ensures = $2; behaviors = $3; } }

requires:

{ [] }

| REQUIRES qexpr SCOL requires { $2::$4 }

ensures:

{ [] }

| ENSURES qexpr SCOL ensures { (EnsuresExpr $2) :: $4 }

| OBSERVER IDENT LPAR tuple_qexpr RPAR SCOL ensures { (SpecObserverNode($2,$4)) :: $7 }

behaviors:

{ [] }

| BEHAVIOR IDENT COL assumes ensures behaviors { ($2,$4,$5)::$6 }

assumes:

{ [] }

| ASSUMES qexpr SCOL assumes { $2::$4 } 

tuple_qexpr:

| qexpr COMMA qexpr {[$3;$1]}

| tuple_qexpr COMMA qexpr {$3::$1}

tuple_expr:

    expr COMMA expr {[$3;$1]}

| tuple_expr COMMA expr {$3::$1}

// Same as tuple expr but accepting lists with single element

array_expr:

  expr {[$1]}

| expr COMMA array_expr {$1::$3}

dim_list:

  dim RBRACKET { fun base -> mkexpr (Expr_access (base, $1)) }

| dim RBRACKET LBRACKET dim_list { fun base -> $4 (mkexpr (Expr_access (base, $1))) }

expr:

/* constants */

  INT {mkexpr (Expr_const (Const_int $1))}

| REAL {mkexpr (Expr_const (Const_real $1))}

| FLOAT {mkexpr (Expr_const (Const_float $1))}

/* Idents or type enum tags */

| IDENT {

  if Hashtbl.mem tag_table $1

  then mkexpr (Expr_const (Const_tag $1))

  else mkexpr (Expr_ident $1)}

| LPAR ANNOT expr RPAR

    {update_expr_annot $3 $2}

| LPAR expr RPAR

    {$2}

| LPAR tuple_expr RPAR

    {mkexpr (Expr_tuple (List.rev $2))}

/* Array expressions */

| LBRACKET array_expr RBRACKET { mkexpr (Expr_array $2) }

| expr POWER dim { mkexpr (Expr_power ($1, $3)) }

| expr LBRACKET dim_list { $3 $1 }

/* Temporal operators */

| PRE expr 

    {mkexpr (Expr_pre $2)}

| expr ARROW expr 

    {mkexpr (Expr_arrow ($1,$3))}

| expr FBY expr 

    {(*mkexpr (Expr_fby ($1,$3))*)

      mkexpr (Expr_arrow ($1, mkexpr (Expr_pre $3)))}

| expr WHEN IDENT 

    {mkexpr (Expr_when ($1,$3,tag_true))}

| expr WHENNOT IDENT

    {mkexpr (Expr_when ($1,$3,tag_false))}

| expr WHEN IDENT LPAR IDENT RPAR

    {mkexpr (Expr_when ($1, $5, $3))}

| MERGE IDENT handler_expr_list

    {mkexpr (Expr_merge ($2,$3))}

/* Applications */

| IDENT LPAR expr RPAR

    {mkexpr (Expr_appl ($1, $3, None))}

| IDENT LPAR expr RPAR EVERY IDENT

    {mkexpr (Expr_appl ($1, $3, Some ($6, tag_true)))}

| IDENT LPAR expr RPAR EVERY IDENT LPAR IDENT RPAR

    {mkexpr (Expr_appl ($1, $3, Some ($8, $6))) }

| IDENT LPAR tuple_expr RPAR

    {mkexpr (Expr_appl ($1, mkexpr (Expr_tuple (List.rev $3)), None))}

| IDENT LPAR tuple_expr RPAR EVERY IDENT

    {mkexpr (Expr_appl ($1, mkexpr (Expr_tuple (List.rev $3)), Some ($6, tag_true))) }

| IDENT LPAR tuple_expr RPAR EVERY IDENT LPAR IDENT RPAR

    {mkexpr (Expr_appl ($1, mkexpr (Expr_tuple (List.rev $3)), Some ($8, $6))) }

/* Boolean expr */

| expr AND expr 

    {mkpredef_call "&&" [$1;$3]}

| expr AMPERAMPER expr 

    {mkpredef_call "&&" [$1;$3]}

| expr OR expr 

    {mkpredef_call "||" [$1;$3]}

| expr BARBAR expr 

    {mkpredef_call "||" [$1;$3]}

| expr XOR expr 

    {mkpredef_call "xor" [$1;$3]}

| NOT expr 

    {mkpredef_unary_call "not" $2}

| expr IMPL expr 

    {mkpredef_call "impl" [$1;$3]}

/* Comparison expr */

| expr EQ expr 

    {mkpredef_call "=" [$1;$3]}

| expr LT expr 

    {mkpredef_call "<" [$1;$3]}

| expr LTE expr 

    {mkpredef_call "<=" [$1;$3]}

| expr GT expr 

    {mkpredef_call ">" [$1;$3]}

| expr GTE  expr 

    {mkpredef_call ">=" [$1;$3]}

| expr NEQ expr 

    {mkpredef_call "!=" [$1;$3]}

/* Arithmetic expr */

| expr PLUS expr 

    {mkpredef_call "+" [$1;$3]}

| expr MINUS expr 

    {mkpredef_call "-" [$1;$3]}

| expr MULT expr 

    {mkpredef_call "*" [$1;$3]}

| expr DIV expr 

    {mkpredef_call "/" [$1;$3]}

| MINUS expr %prec UMINUS

  {mkpredef_unary_call "uminus" $2}

| expr MOD expr 

    {mkpredef_call "mod" [$1;$3]}

/* If */

| IF expr THEN expr ELSE expr

    {mkexpr (Expr_ite ($2, $4, $6))}

handler_expr_list:

   { [] }

| handler_expr handler_expr_list { $1 :: $2 }

handler_expr:

 LPAR IDENT ARROW expr RPAR { ($2, $4) }

qexpr:

| expr { mkeexpr [] $1 }

  /* Quantifiers */

| EXISTS vdecl SCOL qexpr %prec prec_exists { extend_eepxr (Exists, $2) $4 } 

| FORALL vdecl SCOL qexpr %prec prec_forall { extend_eepxr (Forall, $2) $4 }

vdecl:

| ident_list COL typ clock 

    {List.map mkvar_decl (List.map (fun id -> (id, $3, $4, false)) $1)}

| CONST ident_list COL typ clock 

    {List.map mkvar_decl (List.map (fun id -> (id, $4, $5, true)) $2)}

ident_list:

  IDENT {[$1]}

| ident_list COMMA IDENT {$3::$1}

typ:

    {mktyp Tydec_any}

| TINT {mktyp Tydec_int}

| IDENT {

  try 

    mktyp (Hashtbl.find Corelang.type_table (Tydec_const $1))

  with Not_found -> raise (Corelang.Error (Location.symbol_rloc(), Corelang.Unbound_symbol ("type " ^ $1)))

}

| TFLOAT {mktyp Tydec_float}

| TREAL {mktyp Tydec_real}

| TBOOL {mktyp Tydec_bool}

| TCLOCK {mktyp (Tydec_clock Tydec_bool) }

| typ POWER INT {mktyp Tydec_any (*(mktyptuple $3 $1)*)}

| typ POWER IDENT {mktyp Tydec_any (*(mktyptuple (try 

					match get_const $3 with Const_int i -> i with _ -> failwith "Const power error") $1)*)}

clock:

    {mkclock Ckdec_any}

| when_list

    {mkclock (Ckdec_bool (List.rev $1))}

when_cond:

    WHEN IDENT {($2, tag_true)}

| WHENNOT IDENT {($2, tag_false)}

when_list:

    when_cond {[$1]}

| when_list when_cond {$2::$1}

const:

| INT {Const_int $1}

| REAL {Const_real $1}

| FLOAT {Const_float $1}

| TRUE {Const_bool true}

| FALSE {Const_bool false}

| STRING {Const_string $1}

lustre_annot:

lustre_annot_list:

  { [] } 

| kwd COL expr SCOL lustre_annot_list { ($1,$3)::$5 }

| IDENT COL expr SCOL lustre_annot_list { ([$1],$3)::$5 }

| INVARIANT COL expr SCOL lustre_annot_list{ (["invariant"],$3)::$5 }

| OBSERVER COL expr SCOL lustre_annot_list { (["observer"],$3)::$5 }

kwd:

DIV { [] }

| DIV IDENT kwd { $2::$3}