Switched to bigint in lexer

new_ast.cpp

@@ -316,13 +316,18 @@ ast_float(Token *pos, F64 value){
 }
 
 function Ast_Atom *
-ast_int(Token *pos, U64 integer){
+ast_int(Token *pos, BigInt val){
   AST_NEW(Atom, VALUE, pos, AST_EXPR | AST_ATOM);
   result->type = untyped_int;
-  bigint_init_unsigned(&result->big_int_val, integer);
+  bigint_init_bigint(&result->big_int_val, &val);
   return result;
 }
 
+function Ast_Atom *
+ast_int(Token *pos, U64 value){
+  return ast_int(pos, bigint_u64(value));
+}
+
 function Ast_Expr *
 ast_expr_binary(Ast_Expr *left, Ast_Expr *right, Token *op){
   AST_NEW(Binary, BINARY, op, AST_EXPR);