dart-native-extension | 易学教程

Is it possible to call Dart method from C++?

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问题 How to call Dart method from C++ code? I want to try use Dart as scripting language in my application. 回答1: You have two possibilities: First, you can embed the Dart VM into your C++ program . See this discussion (there is a GitHub example). This allows you to write you program in C++ and run Dart scripts. I don't think that this way is supported by the Dart team directly, you need to do many things yourself. Second, you can embed your C++ code into the Dart VM as a native extension. See this

Does Dart support interfacing with the native libraries?

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问题 As the server-side part becomes more complex, developers will need to leverage the existing software. So, does Dart support interfacing with the native libraries (C libraries, in particular)? 回答1: Yes, it is quite possible, here is the official guide. Dart programs running on the standalone Dart VM (command-line apps) can call C or C++ functions in a shared library, by means of native extensions. This article shows how to write and build such native extensions on Windows, Mac OS X, and Linux.

Does Dart support interfacing with the native libraries?

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Dart: How to create stream in native extension

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问题 In my native extension I need to stream ints to my Dart console apps. Very similar in concept to stdin. How do I create a native Dart Stream object which is exposed to console app? 回答1: I've tried to create an example for you and put it on github. https://github.com/mezoni/native_extension_with_stream If you wish to see it in action you should compile it and run. Build script located at bin/makefile.dart . Example script located at bin/example_use_sample_extension.dart . If you only want to

Why native wrapped functions in Dart are such heavyweight in comparison with “DEFINE NATIVE ENTRY” functions that are very lightweight?

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问题 I cannot understand: "Why this reassurance?". This is wrapper for custom native function from dart/runtime/vm/native_entry.cc : It intended for the Dart programmers that want write native extensions . void NativeEntry::NativeCallWrapper(Dart_NativeArguments args, Dart_NativeFunction func) { CHECK_STACK_ALIGNMENT; VERIFY_ON_TRANSITION; NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args); Isolate* isolate = arguments->isolate(); ApiState* state = isolate->api_state(); ASSERT

Why native wrapped functions in Dart are such heavyweight in comparison with “DEFINE NATIVE ENTRY” functions that are very lightweight?

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I cannot understand: "Why this reassurance?". This is wrapper for custom native function from dart/runtime/vm/native_entry.cc : It intended for the Dart programmers that want write native extensions . void NativeEntry::NativeCallWrapper(Dart_NativeArguments args, Dart_NativeFunction func) { CHECK_STACK_ALIGNMENT; VERIFY_ON_TRANSITION; NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args); Isolate* isolate = arguments->isolate(); ApiState* state = isolate->api_state(); ASSERT(state != NULL); ApiLocalScope* current_top_scope = state->top_scope(); ApiLocalScope* scope = state-