ff6f6e8d8e
Before this CL, the type of the implicit "this" parameter to Java methods
implemented in Go could only be a super class of the generated Java
class. For example, the following GoRunnable type is an implementation of
the Java interface java.lang.Runnable with a toString method:
package somepkg
import "Java/java/lang"
type GoRunnable struct {
lang.Runnable
}
func (r *GoRunnable) ToString(this lang.Runnable) string {
...
}
The "this" parameter is implicit in the sense that the reverse generator
automatically fills it with a reference to the Java instance of
GoRunnable.
Note that "this" has the type Java/java/lang.Runnable, not
Java/go/somepkg.GoRunnable, which renders it impossible to call Java
methods and functions that expect GoRunnable. The most practical example
of this is the Android databinding libraries.
This CL changes the implicit this parameter to always match the exact
type. In the example, the toString implementation becomes:
import gopkg "Java/go/somepkg"
func (r *GoRunnable) ToString(this gopkg.GoRunnable) string {
...
}
One strategy would be to simply treat the generated Java classes
(GoRunnable in our example) as any other Java class and import it
through javap. However, since the Java classes are generated after
importing, this present a chicken-and-egg problem.
Instead, use the newly added support for structs with embedded prefixed types
and synthesize class descriptors for every exported Go struct type.
Change-Id: Ic5ce4a151312bd89f91798ed4088c9959225b448
Reviewed-on: https://go-review.googlesource.com/34776
Reviewed-by: David Crawshaw <crawshaw@golang.org>
72 lines
1.3 KiB
Plaintext
72 lines
1.3 KiB
Plaintext
// File is generated by gobind. Do not edit.
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#include <jni.h>
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#include "seq.h"
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extern void init_proxies();
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typedef struct ret_jint {
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jint res;
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jint exc;
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} ret_jint;
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typedef struct ret_jboolean {
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jboolean res;
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jint exc;
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} ret_jboolean;
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typedef struct ret_jshort {
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jshort res;
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jint exc;
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} ret_jshort;
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typedef struct ret_jchar {
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jchar res;
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jint exc;
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} ret_jchar;
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typedef struct ret_jbyte {
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jbyte res;
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jint exc;
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} ret_jbyte;
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typedef struct ret_jlong {
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jlong res;
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jint exc;
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} ret_jlong;
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typedef struct ret_jfloat {
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jfloat res;
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jint exc;
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} ret_jfloat;
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typedef struct ret_jdouble {
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jdouble res;
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jint exc;
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} ret_jdouble;
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typedef struct ret_nstring {
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nstring res;
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jint exc;
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} ret_nstring;
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typedef struct ret_nbyteslice {
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nbyteslice res;
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jint exc;
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} ret_nbyteslice;
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// JNI function headers for the Go <=> Java bridge.
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// gobind -lang=java java
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//
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// File is generated by gobind. Do not edit.
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#ifndef __Java_H__
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#define __Java_H__
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#include <jni.h>
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extern jclass proxy_class_java_F;
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extern jmethodID proxy_class_java_F_cons;
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extern jclass proxy_class_java_O;
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extern jmethodID proxy_class_java_O_cons;
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extern jclass proxy_class_java_R;
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extern jmethodID proxy_class_java_R_cons;
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extern jclass proxy_class_java_S;
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extern jmethodID proxy_class_java_S_cons;
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#endif
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