bdf873ed8f
Accept Java API interface types as arguments and return values from bound Go package functions and methods. Also, allow Go structs to extend Java classes and implement Java interfaces as well as override and implement methods. This is the third and final part of the implementation of the golang/go#16876 proposal. Fixes golang/go#16876 Change-Id: I6951dd87235553ce09abe5117a39a503466163c0 Reviewed-on: https://go-review.googlesource.com/28597 Reviewed-by: David Crawshaw <crawshaw@golang.org>
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#ifndef __GO_SEQ_HDR__
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#define __GO_SEQ_HDR__
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#include <stdint.h>
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#include <android/log.h>
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// For abort()
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#include <stdlib.h>
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#include <jni.h>
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#define LOG_INFO(...) __android_log_print(ANDROID_LOG_INFO, "go/Seq", __VA_ARGS__)
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#define LOG_FATAL(...) \
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{ \
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__android_log_print(ANDROID_LOG_FATAL, "go/Seq", __VA_ARGS__); \
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abort(); \
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}
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// Platform specific types
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typedef struct nstring {
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// UTF16 or UTF8 Encoded string. When converting from Java string to Go
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// string, UTF16. When converting from Go to Java, UTF8.
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void *chars;
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// length in bytes, regardless of encoding
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jsize len;
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} nstring;
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typedef struct nbyteslice {
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void *ptr;
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jsize len;
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} nbyteslice;
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typedef jlong nint;
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extern void go_seq_dec_ref(int32_t ref);
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extern void go_seq_inc_ref(int32_t ref);
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extern int32_t go_seq_to_refnum(JNIEnv *env, jobject o);
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extern int32_t go_seq_to_refnum_go(JNIEnv *env, jobject o);
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extern jobject go_seq_from_refnum(JNIEnv *env, int32_t refnum, jclass proxy_class, jmethodID proxy_cons);
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extern void go_seq_maybe_throw_exception(JNIEnv *env, jobject msg);
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// go_seq_wrap_exception wraps a pending exception in a Java object implementing the
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// golang/x/mobile/bind/errors.Error interface. If there is no pending exception, it returns NULL.
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extern jobject go_seq_wrap_exception(JNIEnv *env);
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extern jbyteArray go_seq_to_java_bytearray(JNIEnv *env, nbyteslice s, int copy);
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extern nbyteslice go_seq_from_java_bytearray(JNIEnv *env, jbyteArray s, int copy);
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extern void go_seq_release_byte_array(JNIEnv *env, jbyteArray arr, jbyte* ptr);
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extern jstring go_seq_to_java_string(JNIEnv *env, nstring str);
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extern nstring go_seq_from_java_string(JNIEnv *env, jstring s);
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// push_local_frame retrieves or creates the JNIEnv* for the current thread
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// and pushes a JNI reference frame. Must be matched with call to pop_local_frame.
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extern JNIEnv *go_seq_push_local_frame(jint cap);
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// Pop the current local frame, releasing all JNI local references in it
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extern void go_seq_pop_local_frame(JNIEnv *env);
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// Return a global reference to the given class. Return NULL and clear exception if not found.
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extern jclass go_seq_find_class(const char *name);
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extern jmethodID go_seq_get_static_method_id(jclass clazz, const char *name, const char *sig);
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extern jmethodID go_seq_get_method_id(jclass clazz, const char *name, const char *sig);
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#endif // __GO_SEQ_HDR__
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