// ignore_for_file: prefer_function_declarations_over_variables, non_constant_identifier_names, no_leading_underscores_for_local_identifiers
import 'dart:convert' as cvt;
import 'package:js/js.dart';
import 'common.dart';

@JS("Module.ccall")
external dynamic ccall(String name, String? returnType, List<String> argTypes, List<dynamic> args);

class _Bindings
{
  static final pkpy_delete = (dynamic p) => ccall("pkpy_delete", null, ["number"], [p]);
  static final pkpy_new_repl = (dynamic vm) => ccall("pkpy_new_repl", "number", ["number"], [vm]);
  static final pkpy_repl_input = (dynamic r, String line) => ccall("pkpy_repl_input", "number", ["number", "string"], [r, line]);
  static final pkpy_new_vm = (bool use_stdio) => ccall("pkpy_new_vm", "number", ["boolean"], [use_stdio]);
  static final pkpy_vm_add_module = (dynamic vm, String name, String source) => ccall("pkpy_vm_add_module", null, ["number", "string", "string"], [vm, name, source]);
  static final pkpy_vm_eval = (dynamic vm, String source) => ccall("pkpy_vm_eval", "string", ["number", "string"], [vm, source]);
  static final pkpy_vm_exec = (dynamic vm, String source) => ccall("pkpy_vm_exec", null, ["number", "string"], [vm, source]);
  static final pkpy_vm_get_global = (dynamic vm, String name) => ccall("pkpy_vm_get_global", "string", ["number", "string"], [vm, name]);
  static final pkpy_vm_read_output = (dynamic vm) => ccall("pkpy_vm_read_output", "string", ["number"], [vm]);
}

class REPL {
  late final dynamic pointer;

  REPL(VM vm) {
    pointer = _Bindings.pkpy_new_repl(vm.pointer);
  }

  void dispose() {
    _Bindings.pkpy_delete(pointer);
  }

  /// Input a source line to an interactive console.
  int input(String line)
  {
    var ret = _Bindings.pkpy_repl_input(pointer, line);
    return ret;
  }

}