Pratt parsing, basic ast, decl parse const

ast.c

@@ -353,7 +353,7 @@ expr_new(Arena *p, Expr_Kind kind, Token *token){
 
 function Expr *
 expr_int(Arena *p, Token *token){
-  assert(token->kind == TK_Int);
+  assert(token->kind == TK_Integer);
   Expr *expr = expr_new(p, EK_Int, token);
   expr->int_val = token->int_val;
   return expr;