mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 11:30:18 +00:00
77 lines
2.0 KiB
Dart
77 lines
2.0 KiB
Dart
// ignore_for_file: non_constant_identifier_names
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import 'dart:convert';
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import 'dart:ffi' as ffi;
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import 'package:ffi/ffi.dart';
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Map<String, Function> _mappings = {};
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class StrWrapper {
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static final Finalizer<ffi.Pointer<Utf8>> finalizer =
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Finalizer((p) => malloc.free(p));
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late final ffi.Pointer<Utf8> _p;
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StrWrapper(String s) {
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_p = s.toNativeUtf8();
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finalizer.attach(this, _p);
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}
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ffi.Pointer<Utf8> get p => _p;
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}
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dynamic invoke_f_any(ffi.Pointer<Utf8> p) {
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String s = p.toDartString();
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var parts = s.split(' ');
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List<dynamic> args = [];
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for (int i = 1; i < parts.length; i++) {
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args.add(jsonDecode(parts[i]));
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}
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var f = _mappings[parts[0]];
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return Function.apply(f!, args);
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}
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int invoke_f_int(ffi.Pointer<Utf8> p) => invoke_f_any(p);
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double invoke_f_float(ffi.Pointer<Utf8> p) => invoke_f_any(p);
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bool invoke_f_bool(ffi.Pointer<Utf8> p) => invoke_f_any(p);
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ffi.Pointer<Utf8> invoke_f_str(ffi.Pointer<Utf8> p) =>
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StrWrapper(invoke_f_any(p)).p;
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void invoke_f_None(ffi.Pointer<Utf8> p) => invoke_f_any(p);
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ffi.Pointer f_int() {
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return ffi.Pointer.fromFunction<ffi.Int64 Function(ffi.Pointer<Utf8>)>(
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invoke_f_int, 0);
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}
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ffi.Pointer f_float() {
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return ffi.Pointer.fromFunction<ffi.Double Function(ffi.Pointer<Utf8>)>(
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invoke_f_float, 0.0);
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}
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ffi.Pointer f_bool() {
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return ffi.Pointer.fromFunction<ffi.Bool Function(ffi.Pointer<Utf8>)>(
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invoke_f_bool, false);
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}
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ffi.Pointer f_str() {
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return ffi.Pointer.fromFunction<
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ffi.Pointer<Utf8> Function(ffi.Pointer<Utf8>)>(invoke_f_str);
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}
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ffi.Pointer f_None() {
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return ffi.Pointer.fromFunction<ffi.Void Function(ffi.Pointer<Utf8>)>(
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invoke_f_None);
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}
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void register(String? key, Function value) {
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_mappings[key!] = value;
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}
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int t_code<T>() {
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if (T == int) return 'i'.codeUnitAt(0);
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if (T == double) return 'f'.codeUnitAt(0);
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if (T == bool) return 'b'.codeUnitAt(0);
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if (T == String) return 's'.codeUnitAt(0);
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return 'N'.codeUnitAt(0);
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// throw Exception("Type must be int/double/bool/String");
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}
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