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parser.mly
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%{
open Json
%}
%token <int> INT
%token <float> FLOAT
%token <string> STRING
%token TRUE
%token FALSE
%token NULL
%token LBRACE
%token RBRACE
%token LBRACK
%token RBRACK
%token COLON
%token COMMA
%token EOF
%start<Json.value option> json_unit
%%
json_unit:
| EOF { None }
| v=value { Some v }
;
value:
| LBRACE fs=separated_list(COMMA, objfield) RBRACE { Obj(fs) }
| LBRACK ls=separated_list(COMMA, value) RBRACK { List(ls) }
| s = STRING { String(s) }
| i = INT { Int(i) }
| f = FLOAT { Float(f) }
| TRUE { Bool(true) }
| FALSE { Bool(false) }
| NULL { Null }
;
objfield:
| k = STRING COLON v = value { (k, v) }
;