37 lines
966 B
Go
37 lines
966 B
Go
// +build cgo
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package bridge
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// #include "stdint.h"
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// #include "include/dart_api_dl.c"
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//
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// // Go does not allow calling C function pointers directly. So we are
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// // forced to provide a trampoline.
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// bool GoDart_PostCObject(Dart_Port_DL port, Dart_CObject* obj) {
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// return Dart_PostCObject_DL(port, obj);
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// }
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import "C"
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import (
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"fmt"
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"unsafe"
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)
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func InitializeDartApi(api unsafe.Pointer) {
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if C.Dart_InitializeApiDL(api) != 0 {
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panic("failed to initialize Dart DL C API: version mismatch. " +
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"must update include/ to match Dart SDK version")
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}
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}
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func SendStringToPort(port int64, msg string) {
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var obj C.Dart_CObject
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obj._type = C.Dart_CObject_kString
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msg_obj := C.CString(msg) // go string -> char*s
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// union type, we do a force conversion
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ptr := unsafe.Pointer(&obj.value[0])
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*(**C.char)(ptr) = msg_obj
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ret := C.GoDart_PostCObject(C.Dart_Port_DL(port), &obj)
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if !ret {
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fmt.Println("ERROR: post to port ", port, " failed", msg)
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}
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}
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