Examples with JavaType com.oracle.truffle.espresso.substitutions.JavaType used on opensource projects

Example 36 with JavaType

use of com.oracle.truffle.espresso.substitutions.JavaType in project graal by oracle.

the class VM method JVM_GetDeclaredClasses.

@VmImpl(isJni = true)
@JavaType(Class[].class)
public StaticObject JVM_GetDeclaredClasses(@JavaType(Class.class) StaticObject self) {
    Meta meta = getMeta();
    Klass klass = self.getMirrorKlass();
    if (klass.isPrimitive() || klass.isArray()) {
        return meta.java_lang_Class.allocateReferenceArray(0);
    }
    ObjectKlass instanceKlass = (ObjectKlass) klass;
    InnerClassesAttribute innerClasses = (InnerClassesAttribute) instanceKlass.getAttribute(InnerClassesAttribute.NAME);
    if (innerClasses == null || innerClasses.entries().length == 0) {
        return meta.java_lang_Class.allocateReferenceArray(0);
    }
    RuntimeConstantPool pool = instanceKlass.getConstantPool();
    List<Klass> innerKlasses = new ArrayList<>();
    for (InnerClassesAttribute.Entry entry : innerClasses.entries()) {
        if (entry.innerClassIndex != 0 && entry.outerClassIndex != 0) {
            // Check to see if the name matches the class we're looking for
            // before attempting to find the class.
            Symbol<Name> outerDescriptor = pool.classAt(entry.outerClassIndex).getName(pool);
            // Check decriptors/names before resolving.
            if (outerDescriptor.equals(instanceKlass.getName())) {
                Klass outerKlass = pool.resolvedKlassAt(instanceKlass, entry.outerClassIndex);
                if (outerKlass == instanceKlass) {
                    Klass innerKlass = pool.resolvedKlassAt(instanceKlass, entry.innerClassIndex);
                    // HotSpot:
                    // Throws an exception if outer klass has not declared k as
                    // an inner klass
                    // Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL);
                    // TODO(peterssen): The check in HotSpot is redundant.
                    innerKlasses.add(innerKlass);
                }
            }
        }
    }
    return meta.java_lang_Class.allocateReferenceArray(innerKlasses.size(), new IntFunction<StaticObject>() {

        @Override
        public StaticObject apply(int index) {
            return innerKlasses.get(index).mirror();
        }
    });
}

Example 37 with JavaType

use of com.oracle.truffle.espresso.substitutions.JavaType in project graal by oracle.

the class VM method JVM_GetStackTraceElement.

@VmImpl(isJni = true)
@JavaType(StackTraceElement.class)
public StaticObject JVM_GetStackTraceElement(@JavaType(Throwable.class) StaticObject self, int index, @Inject SubstitutionProfiler profiler) {
    Meta meta = getMeta();
    if (index < 0) {
        profiler.profile(0);
        throw meta.throwException(meta.java_lang_IndexOutOfBoundsException);
    }
    StaticObject ste = meta.java_lang_StackTraceElement.allocateInstance();
    StackTrace frames = EspressoException.getFrames(self, meta);
    if (frames == null || index >= frames.size) {
        profiler.profile(1);
        throw meta.throwException(meta.java_lang_IndexOutOfBoundsException);
    }
    StackElement stackElement = frames.trace[index];
    Method method = stackElement.getMethod();
    if (method == null) {
        return StaticObject.NULL;
    }
    int bci = stackElement.getBCI();
    getMeta().java_lang_StackTraceElement_init.invokeDirect(/* this */
    ste, /* declaringClass */
    meta.toGuestString(MetaUtil.internalNameToJava(method.getDeclaringKlass().getType().toString(), true, true)), /* methodName */
    meta.toGuestString(method.getName()), /* fileName */
    meta.toGuestString(method.getSourceFile()), /* lineNumber */
    method.bciToLineNumber(bci));
    return ste;
}

Example 38 with JavaType

use of com.oracle.truffle.espresso.substitutions.JavaType in project graal by oracle.

the class VM method JVM_GetProperties.

@VmImpl(isJni = true)
@TruffleBoundary
@JavaType(String[].class)
public StaticObject JVM_GetProperties() {
    Map<String, String> props = buildPropertiesMap();
    StaticObject array = getMeta().java_lang_String.allocateReferenceArray(props.size() * 2);
    int index = 0;
    for (Map.Entry<String, String> entry : props.entrySet()) {
        getInterpreterToVM().setArrayObject(getMeta().toGuestString(entry.getKey()), index * 2, array);
        getInterpreterToVM().setArrayObject(getMeta().toGuestString(entry.getValue()), index * 2 + 1, array);
        index++;
    }
    return array;
}

Example 39 with JavaType

use of com.oracle.truffle.espresso.substitutions.JavaType in project graal by oracle.

the class VM method JVM_GetSystemPackages.

@VmImpl(isJni = true)
@JavaType(String[].class)
public StaticObject JVM_GetSystemPackages() {
    String[] packages = getRegistries().getBootClassRegistry().getPackages();
    StaticObject[] array = new StaticObject[packages.length];
    for (int i = 0; i < packages.length; i++) {
        array[i] = getMeta().toGuestString(packages[i]);
    }
    return StaticObject.createArray(getMeta().java_lang_String.getArrayClass(), array);
}

Example 40 with JavaType

use of com.oracle.truffle.espresso.substitutions.JavaType in project graal by oracle.

the class VM method JVM_InitClassName.

@VmImpl(isJni = true)
@JavaType(String.class)
public StaticObject JVM_InitClassName(@JavaType(Class.class) StaticObject self) {
    StaticObject name = JVM_GetClassName(self);
    getMeta().java_lang_Class_name.set(self, name);
    return name;
}