mirror of https://github.com/adamdruppe/arsd.git
accessing java fields
This commit is contained in:
Adam D. Ruppe
parent
4ba062f093
commit
d668889235
387
jni.d
387
jni.d
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@ -21,6 +21,11 @@
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// and even forward exceptions (sort of, it puts it in a RuntimeException right now)
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h.throwException();
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}
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public void printMember() {
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System.out.println("Member: " + member);
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}
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public int member;
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}
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```
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@ -48,6 +53,13 @@
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import std.stdio;
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writefln("hello from D, %s", name);
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}
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// D can also access Java methods
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@Import void printMember();
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// and fields, as properties
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@Import @property int member(); // getter for java's `int member`
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@Import @property void member(int); // setter for java's `int member`
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}
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---
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@ -1227,6 +1239,57 @@ private void exceptionCheck(JNIEnv* env) {
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}
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}
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E[] translateJavaArray(E)(JNIEnv* env, jarray jarr) {
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auto len = (*env).GetArrayLength(env, jarr);
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static if(is(E == int)) {
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auto eles = (*env).GetIntArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup; // FIXME: is this dup strictly necessary? I think it is
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(*env).ReleaseIntArrayElements(env, jarr, eles, 0);
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} else static if(is(E == bool)) {
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auto eles = (*env).GetBooleanArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseBooleanArrayElements(env, jarr, eles, 0);
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} else static if(is(E == long)) {
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auto eles = (*env).GetLongArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseLongArrayElements(env, jarr, eles, 0);
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} else static if(is(E == short)) {
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auto eles = (*env).GetShortArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseShortArrayElements(env, jarr, eles, 0);
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} else static if(is(E == wchar)) {
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auto eles = (*env).GetCharArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseCharArrayElements(env, jarr, eles, 0);
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} else static if(is(E == float)) {
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auto eles = (*env).GetFloatArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseFloatArrayElements(env, jarr, eles, 0);
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} else static if(is(E == double)) {
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auto eles = (*env).GetDoubleArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseDoubleArrayElements(env, jarr, eles, 0);
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} else static if(is(E == byte)) {
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auto eles = (*env).GetByteArrayElements(env, jarr, null);
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auto res = eles[0 .. len].dup;
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(*env).ReleaseByteArrayElements(env, jarr, eles, 0);
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} else static if(is(E == string)) {
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/*
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auto eles = (*env).GetByteArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseByteArrayElements(env, jarr, eles, 0);
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*/
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string[] res; // FIXME
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} else static if(is(E : IJavaObject)) {
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// FIXME: implement this
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typeof(return) res = null;
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} else static if(true) {
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E[] res; // FIXME FIXME
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} else static assert(0, E.stringof ~ " not supported array element type yet"); // FIXME handle object arrays too. which would also prolly include arrays of arrays.
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return res;
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}
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private enum ImportImplementationString = q{
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static if(is(typeof(return) == void)) {
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(*env).CallSTATICVoidMethod(env, jobj, _jmethodID, DDataToJni(env, args).args);
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@ -1297,53 +1360,7 @@ private enum ImportImplementationString = q{
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auto jarr = (*env).CallSTATICObjectMethod(env, jobj, _jmethodID, DDataToJni(env, args).args);
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exceptionCheck(env);
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auto len = (*env).GetArrayLength(env, jarr);
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static if(is(E == int)) {
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auto eles = (*env).GetIntArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseIntArrayElements(env, jarr, eles, 0);
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} else static if(is(E == bool)) {
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auto eles = (*env).GetBooleanArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseBooleanArrayElements(env, jarr, eles, 0);
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} else static if(is(E == long)) {
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auto eles = (*env).GetLongArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseLongArrayElements(env, jarr, eles, 0);
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} else static if(is(E == short)) {
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auto eles = (*env).GetShortArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseShortArrayElements(env, jarr, eles, 0);
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} else static if(is(E == wchar)) {
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auto eles = (*env).GetCharArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseCharArrayElements(env, jarr, eles, 0);
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} else static if(is(E == float)) {
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auto eles = (*env).GetFloatArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseFloatArrayElements(env, jarr, eles, 0);
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} else static if(is(E == double)) {
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auto eles = (*env).GetDoubleArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseDoubleArrayElements(env, jarr, eles, 0);
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} else static if(is(E == byte)) {
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auto eles = (*env).GetByteArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseByteArrayElements(env, jarr, eles, 0);
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} else static if(is(E == string)) {
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/*
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auto eles = (*env).GetByteArrayElements(env, jarr, null);
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auto res = eles[0 .. len];
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(*env).ReleaseByteArrayElements(env, jarr, eles, 0);
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*/
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string[] res; // FIXME
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} else static if(is(E : IJavaObject)) {
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// FIXME: implement this
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typeof(return) res = null;
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} else static if(true) {
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E[] res; // FIXME FIXME
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} else static assert(0, E.stringof ~ " not supported array element type yet"); // FIXME handle object arrays too. which would also prolly include arrays of arrays.
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auto res = translateJavaArray!E(env, jarr);
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return res;
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} else {
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static assert(0, "Unsupported return type for JNI: " ~ typeof(return).stringof);
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@ -1355,9 +1372,284 @@ import std.string;
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static immutable ImportImplementationString_static = ImportImplementationString.replace("STATIC", "Static");
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static immutable ImportImplementationString_not = ImportImplementationString.replace("STATIC", "");
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bool isProperty(string[] items...) {
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foreach(item; items)
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if(item == "@property")
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return true;
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return false;
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}
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private mixin template JavaImportImpl(T, alias method, size_t overloadIndex) {
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import std.traits;
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static if(isProperty(__traits(getFunctionAttributes, method))) {
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private static jfieldID _jfieldID;
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static if(__traits(isStaticFunction, method))
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pragma(mangle, method.mangleof)
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private static ReturnType!method implementation(Parameters!method args) {
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auto env = activeEnv;
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if(env is null)
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throw new Exception("JNI not active in this thread");
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static if(is(typeof(return) == void)) {
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static assert(Parameters!method.length == 1, "Java Property setters must take exactly one argument and return void");
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alias FieldType = Parameters!method[0];
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} else {
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static assert(Parameters!method.length == 0, "Java Property getters must take no arguments");
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alias FieldType = typeof(return);
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}
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if(!_jfieldID) {
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jclass jc;
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if(!T.internalJavaClassHandle_) {
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jc = (*env).FindClass(env, (T._javaParameterString[1 .. $-1] ~ "\0").ptr);
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if(!jc)
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throw new Exception("Cannot find Java class " ~ T._javaParameterString[1 .. $-1]);
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T.internalJavaClassHandle_ = jc;
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} else {
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jc = T.internalJavaClassHandle_;
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}
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_jfieldID = (*env).GetStaticFieldID(env, jc,
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getJavaName!method.ptr,
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(DTypesToJniString!(FieldType) ~ "\0").ptr
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);
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if(!_jfieldID)
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throw new Exception("Cannot find Java static field " ~ T.stringof ~ "." ~ __traits(identifier, method));
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}
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auto jobj = T.internalJavaClassHandle_; // for static
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static if(is(typeof(return) == void)) {
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// setter
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static if(is(FieldType == string) || is(FieldType == wstring)) {
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(*env).SetStaticObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == int)) {
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(*env).SetStaticIntField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == short)) {
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(*env).SetStaticShortField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType : IJavaObject)) {
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(*env).SetStaticObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == long)) {
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(*env).SetStaticLongField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == float)) {
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(*env).SetStaticFloatField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == double)) {
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(*env).SetStaticDoubleField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == bool)) {
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(*env).SetStaticBooleanField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == byte)) {
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(*env).SetStaticByteField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == wchar)) {
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(*env).SetStaticCharField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == E[], E)) {
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// Java arrays are represented as objects
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(*env).SetStaticObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else {
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static assert(0, "Unsupported return type for JNI: " ~ FieldType.stringof);
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//return DDataToJni(env, __traits(getMember, dobj, __traits(identifier, method))(JavaParamsToD!(Parameters!method)(env, args).args));
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}
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} else {
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// getter
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static if(is(FieldType == string) || is(FieldType == wstring)) {
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// I can't just use JavaParamsToD here btw because of lifetime worries.
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// maybe i should fix it down there though because there is a lot of duplication
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auto jret = (*env).GetStaticObjectField(env, jobj, _jfieldID);
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FieldType ret;
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auto len = (*env).GetStringLength(env, jret);
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auto ptr = (*env).GetStringChars(env, jret, null);
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static if(is(FieldType == wstring)) {
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if(ptr !is null) {
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ret = ptr[0 .. len].idup;
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(*env).ReleaseStringChars(env, jret, ptr);
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}
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} else {
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import std.conv;
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if(ptr !is null) {
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ret = to!string(ptr[0 .. len]);
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(*env).ReleaseStringChars(env, jret, ptr);
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}
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}
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return ret;
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} else static if(is(FieldType == int)) {
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auto ret = (*env).GetStaticIntField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == short)) {
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auto ret = (*env).GetStaticShortField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType : IJavaObject)) {
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auto ret = (*env).GetStaticObjectField(env, jobj, _jfieldID);
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return fromExistingJavaObject!(FieldType)(ret);
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} else static if(is(FieldType == long)) {
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auto ret = (*env).GetStaticLongField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == float)) {
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auto ret = (*env).GetStaticFloatField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == double)) {
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auto ret = (*env).GetStaticDoubleField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == bool)) {
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auto ret = (*env).GetStaticBooleanField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == byte)) {
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auto ret = (*env).GetStaticByteField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == wchar)) {
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auto ret = (*env).GetStaticCharField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == E[], E)) {
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// Java arrays are represented as objects
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auto jarr = (*env).GetStaticObjectField(env, jobj, _jfieldID);
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auto res = translateJavaArray!E(env, jarr);
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return res;
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} else {
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static assert(0, "Unsupported return type for JNI: " ~ FieldType.stringof);
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//return DDataToJni(env, __traits(getMember, dobj, __traits(identifier, method))(JavaParamsToD!(Parameters!method)(env, args).args));
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}
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}
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}
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else
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pragma(mangle, method.mangleof)
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private static ReturnType!method implementation(Parameters!method args, T this_) {
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auto env = activeEnv;
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if(env is null)
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throw new Exception("JNI not active in this thread");
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static if(is(typeof(return) == void)) {
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static assert(Parameters!method.length == 1, "Java Property setters must take exactly one argument and return void");
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alias FieldType = Parameters!method[0];
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} else {
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static assert(Parameters!method.length == 0, "Java Property getters must take no arguments");
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alias FieldType = typeof(return);
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}
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if(!_jfieldID) {
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jclass jc;
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if(!T.internalJavaClassHandle_) {
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jc = (*env).FindClass(env, (T._javaParameterString[1 .. $-1] ~ "\0").ptr);
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if(!jc)
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throw new Exception("Cannot find Java class " ~ T._javaParameterString[1 .. $-1]);
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T.internalJavaClassHandle_ = jc;
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} else {
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jc = T.internalJavaClassHandle_;
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}
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_jfieldID = (*env).GetFieldID(env, jc,
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getJavaName!method.ptr,
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(DTypesToJniString!(FieldType) ~ "\0").ptr
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);
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if(!_jfieldID)
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throw new Exception("Cannot find Java field " ~ T.stringof ~ "." ~ __traits(identifier, method));
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}
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// auto jobj = T.internalJavaClassHandle_; // for static
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auto jobj = this_.getJavaHandle();
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static if(is(typeof(return) == void)) {
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// setter
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static if(is(FieldType == string) || is(FieldType == wstring)) {
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(*env).SetObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == int)) {
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(*env).SetIntField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == short)) {
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(*env).SetShortField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType : IJavaObject)) {
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(*env).SetObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == long)) {
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(*env).SetLongField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == float)) {
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(*env).SetFloatField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == double)) {
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(*env).SetDoubleField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == bool)) {
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(*env).SetBooleanField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == byte)) {
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(*env).SetByteField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == wchar)) {
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(*env).SetCharField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else static if(is(FieldType == E[], E)) {
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// Java arrays are represented as objects
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(*env).SetObjectField(env, jobj, _jfieldID, DDataToJni(env, args).args);
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} else {
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static assert(0, "Unsupported return type for JNI: " ~ FieldType.stringof);
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//return DDataToJni(env, __traits(getMember, dobj, __traits(identifier, method))(JavaParamsToD!(Parameters!method)(env, args).args));
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}
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} else {
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// getter
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static if(is(FieldType == string) || is(FieldType == wstring)) {
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// I can't just use JavaParamsToD here btw because of lifetime worries.
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// maybe i should fix it down there though because there is a lot of duplication
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auto jret = (*env).GetObjectField(env, jobj, _jfieldID);
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FieldType ret;
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auto len = (*env).GetStringLength(env, jret);
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auto ptr = (*env).GetStringChars(env, jret, null);
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static if(is(FieldType == wstring)) {
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if(ptr !is null) {
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ret = ptr[0 .. len].idup;
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(*env).ReleaseStringChars(env, jret, ptr);
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}
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} else {
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import std.conv;
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if(ptr !is null) {
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ret = to!string(ptr[0 .. len]);
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(*env).ReleaseStringChars(env, jret, ptr);
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}
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}
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return ret;
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} else static if(is(FieldType == int)) {
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auto ret = (*env).GetIntField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType == short)) {
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auto ret = (*env).GetShortField(env, jobj, _jfieldID);
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return ret;
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} else static if(is(FieldType : IJavaObject)) {
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auto ret = (*env).GetObjectField(env, jobj, _jfieldID);
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return fromExistingJavaObject!(FieldType)(ret);
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} else static if(is(FieldType == long)) {
|
||||
auto ret = (*env).GetLongField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == float)) {
|
||||
auto ret = (*env).GetFloatField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == double)) {
|
||||
auto ret = (*env).GetDoubleField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == bool)) {
|
||||
auto ret = (*env).GetBooleanField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == byte)) {
|
||||
auto ret = (*env).GetByteField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == wchar)) {
|
||||
auto ret = (*env).GetCharField(env, jobj, _jfieldID);
|
||||
return ret;
|
||||
} else static if(is(FieldType == E[], E)) {
|
||||
// Java arrays are represented as objects
|
||||
auto jarr = (*env).GetObjectField(env, jobj, _jfieldID);
|
||||
|
||||
auto res = translateJavaArray!E(env, jarr);
|
||||
return res;
|
||||
} else {
|
||||
static assert(0, "Unsupported return type for JNI: " ~ FieldType.stringof);
|
||||
//return DDataToJni(env, __traits(getMember, dobj, __traits(identifier, method))(JavaParamsToD!(Parameters!method)(env, args).args));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
} else {
|
||||
private static jmethodID _jmethodID;
|
||||
|
||||
static if(__traits(identifier, method) == "__ctor")
|
||||
|
|
@ -1456,6 +1748,7 @@ private mixin template JavaImportImpl(T, alias method, size_t overloadIndex) {
|
|||
|
||||
mixin(ImportImplementationString_not);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private template DTypesToJniString(Types...) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue