mirror of
https://github.com/encounter/engine.git
synced 2026-03-30 11:09:55 -07:00
gaaclarke
0a455a8207
Added channel buffers to 'ui' so that messages have a place to go until message handling is setup.
91 lines
3.0 KiB
Dart
91 lines
3.0 KiB
Dart
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// TODO(dnfield): remove unused_element ignores when https://github.com/dart-lang/sdk/issues/35164 is resolved.
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part of dart.ui;
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// Corelib 'print' implementation.
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void _print(dynamic arg) {
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_Logger._printString(arg.toString());
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}
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void _printDebug(dynamic arg) {
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_Logger._printDebugString(arg.toString());
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}
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class _Logger {
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static void _printString(String s) native 'Logger_PrintString';
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static void _printDebugString(String s) native 'Logger_PrintDebugString';
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}
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// If we actually run on big endian machines, we'll need to do something smarter
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// here. We don't use [Endian.Host] because it's not a compile-time
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// constant and can't propagate into the set/get calls.
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const Endian _kFakeHostEndian = Endian.little;
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// A service protocol extension to schedule a frame to be rendered into the
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// window.
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Future<developer.ServiceExtensionResponse> _scheduleFrame(
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String method,
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Map<String, String> parameters
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) async {
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// Schedule the frame.
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window.scheduleFrame();
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// Always succeed.
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return developer.ServiceExtensionResponse.result(json.encode(<String, String>{
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'type': 'Success',
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}));
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}
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@pragma('vm:entry-point')
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void _setupHooks() { // ignore: unused_element
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assert(() {
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// In debug mode, register the schedule frame extension.
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developer.registerExtension('ext.ui.window.scheduleFrame', _scheduleFrame);
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return true;
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}());
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}
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/// Returns runtime Dart compilation trace as a UTF-8 encoded memory buffer.
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///
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/// The buffer contains a list of symbols compiled by the Dart JIT at runtime up
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/// to the point when this function was called. This list can be saved to a text
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/// file and passed to tools such as `flutter build` or Dart `gen_snapshot` in
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/// order to pre-compile this code offline.
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///
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/// The list has one symbol per line of the following format:
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/// `<namespace>,<class>,<symbol>\n`.
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///
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/// Here are some examples:
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///
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/// ```
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/// dart:core,Duration,get:inMilliseconds
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/// package:flutter/src/widgets/binding.dart,::,runApp
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/// file:///.../my_app.dart,::,main
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/// ```
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///
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/// This function is only effective in debug and dynamic modes, and will throw in AOT mode.
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List<int> saveCompilationTrace() {
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final dynamic result = _saveCompilationTrace();
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if (result is Error)
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throw result;
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return result;
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}
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dynamic _saveCompilationTrace() native 'SaveCompilationTrace';
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void _scheduleMicrotask(void callback()) native 'ScheduleMicrotask';
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int _getCallbackHandle(Function closure) native 'GetCallbackHandle';
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Function _getCallbackFromHandle(int handle) native 'GetCallbackFromHandle';
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// Required for gen_snapshot to work correctly.
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int _isolateId; // ignore: unused_element
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@pragma('vm:entry-point')
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Function _getPrintClosure() => _print; // ignore: unused_element
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@pragma('vm:entry-point')
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Function _getScheduleMicrotaskClosure() => _scheduleMicrotask; // ignore: unused_element
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