%{
  #include <stdio.h>
  #define YYSTYPE char const *
  int yylex (void);
  void yyerror (char const *);
%}

%token TYPENAME ID

%right '='
%left '+'

%require "3.2"
%language "c++"

%skeleton "glr2.cc"
%glr-parser

%%

prog:
    %empty
  | prog stmt                           { printf ("\n"); }
;

stmt:
    expr ';'  %dprec 1
  | decl      %dprec 2
;

expr:
    ID                                  { printf ("%s ", $$); }
  | TYPENAME '(' expr ')'               { printf ("%s <cast> ", $1); }
  | expr '+' expr                       { printf ("+ "); }
  | expr '=' expr                       { printf ("= "); }
;

decl:
    TYPENAME declarator ';'             { printf ("%s <declare> ", $1); }
  | TYPENAME declarator '=' expr ';'    { printf ("%s <init-declare> ", $1); }
;

declarator:
    ID                                  { printf ("\"%s\" ", $1); }
  | '(' declarator ')'
;