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|
%{
open Ast
module Sset = Set.Make(String)
let type_names = ref Sset.empty
%}
%token <int> INTVAL
%token <string> STRVAL
%token <string> IDENT
%token <string> TIDENT
/* this is stupid */
%token INCLUDE_IOSTREAM
/* keywords */
%token CLASS ELSE FALSE FOR IF INT NEW NULL PUBLIC RETURN
%token THIS TRUE VIRTUAL VOID WHILE
/* operators */
%token ASSIGN LOR LAND EQ NE LT LE GT GE PLUS MINUS
%token TIMES DIV MOD NOT INCR DECR REF
%token LPAREN RPAREN RARROW DOT
/* other symbols */
%token SEMICLON COLON DOUBLECOLON LFLOW LBRACE RBRACE
/* operator priority */
%right ASSIGN
%left LOR
%left LAND
%left EQ NE
%left LT LE GT GE
%left PLUS MINUS
%left TIMES DIV MOD
/* opérateurs unaires associatifs à droite */
%left RARROW DOT LPAREN
%start prog
%type <unit> prog
%%
prog:
INCLUDE_IOSTREAM?
decls = declaration*
EOF
{ () }
;
declaration:
| d = decl_var
{ d }
| d = decl_class
{ d }
| p = proto
b = block
{ () }
;
decl_vars:
| t = ty
vars = separated_nonempty_list(COMMA, var)
SEMICOLON
;
decl_class:
| CLASS i = IDENT
s = supers?
LBRACE
PUBLIC COLON
m = members*
RBRACE SEMICOLON
{ () }
;
supers:
| COLON
s = separated_nonempty_list(COMMA, super_id)
{ s }
;
super_id:
| PUBLIC i = TIDENT
{ i }
;
member:
| d = decl_vars
{ () }
| v = VIRTUAL?
p = proto
{ () }
;
proto:
| t = ty
qv = qvar
LPAREN args = separated_list(COMMA, argument) RPAREN
{ () }
| qi = TIDENT
LPAREN args = separated_list(COMMA, arg) RPAREN
{ () }
| qa = TIDENT DOUBLECOLON
qb = TIDENT
LPAREN args = separated_list(COMMA, arg) RPAREN
{ () }
;
argument:
| t = ty
v = var
{ () }
;
var:
| i = IDENT
{ () }
| TIMES v = var
{ () }
| REF v = var
{ () }
;
qvar:
| qi = qident
{ qi }
| TIMES v = qvar
{ () }
| REF v = qvar
{ () }
;
qident:
| i = IDENT
{ () }
| i = IDENT DOUBLECOLON j = IDENT
{ () }
;
expression:
| i = INTVAL { EIntConst(i) }
| THIS { EThis }
| FALSE { EBoolConst(false) }
| TRUE { EBoolConst(true) }
| NULL { ENull }
| q = qident { () }
| TIMES expression { EUnary(Deref, e) }
| e1 = expression DOT e2 = IDENT { () }
| e1 = expression RARROW e2 = IDENT { () }
| e1 = expression ASSIGN e2 = expression { () }
| f = expression LPAREN
a = separated_list(COLON, expression)
{ () }
| NEW c = IDENT LPAREN
a = separated_list(COLON, expression)
{ () }
| INCR e = expression { EUnary(PreIncr, e) }
| DECR e = expression { EUnary(PreDecr, e) }
| e = expression INCR { EUnary(PostIncr, e) }
| e = expression DECR { EUnary(PostDecr, e) }
| REF e = expression { EUnary(Ref, e) }
| NOT e = expression { EUnary(Not, e) }
| MINUS e = expression { EUnary(Minus, e) }
| PLUS e = expression { EUnary(Plus, e) }
| e1 = expression
o = operator
e2 = expression
{ EBinop(e1, o, e2) }
| LPAREN e = expression RPAREN { e }
;
operator:
| EQ { Equal }
| NEQ { NotEqual }
| LT { Lt }
| LE { Le }
| GT { Gt }
| GE { Ge }
| PLUS { Add }
| MINUS { Sub }
| TIMES { Mul }
| DIV { Div }
| MOD { Modulo }
| LAND { Land }
| LOR { Lor }
;
|
