java.lang.invoke.MethodType#appendParameterTypes ( )源码实例Demo

下面列出了java.lang.invoke.MethodType#appendParameterTypes ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： TencentKona-8 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码2 项目： jdk8u60 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码3 项目： jdk8u60 文件： TypeMap.java

MethodType getCallSiteType(final FunctionNode functionNode) {
    final Type[] types = paramTypeMap.get(functionNode.getId());
    if (types == null) {
        return null;
    }

    MethodType mt = MethodType.methodType(returnTypeMap.get(functionNode.getId()).getTypeClass());
    if (needsCallee) {
        mt = mt.appendParameterTypes(ScriptFunction.class);
    }

    mt = mt.appendParameterTypes(Object.class); //this

    for (final Type type : types) {
        if (type == null) {
            return null; // not all parameter information is supplied
        }
        mt = mt.appendParameterTypes(type.getTypeClass());
    }

    return mt;
}

源代码4 项目： openjdk-jdk8u 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码5 项目： openjdk-jdk8u-backup 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码6 项目： openjdk-jdk9 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码7 项目： hottub 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码8 项目： jdk8u_nashorn 文件： RecompilableScriptFunctionData.java

private MethodType explicitParams(final MethodType callSiteType) {
    if (CompiledFunction.isVarArgsType(callSiteType)) {
        return null;
    }

    final MethodType noCalleeThisType = callSiteType.dropParameterTypes(0, 2); // (callee, this) is always in call site type
    final int callSiteParamCount = noCalleeThisType.parameterCount();

    // Widen parameters of reference types to Object as we currently don't care for specialization among reference
    // types. E.g. call site saying (ScriptFunction, Object, String) should still link to (ScriptFunction, Object, Object)
    final Class<?>[] paramTypes = noCalleeThisType.parameterArray();
    boolean changed = false;
    for (int i = 0; i < paramTypes.length; ++i) {
        final Class<?> paramType = paramTypes[i];
        if (!(paramType.isPrimitive() || paramType == Object.class)) {
            paramTypes[i] = Object.class;
            changed = true;
        }
    }
    final MethodType generalized = changed ? MethodType.methodType(noCalleeThisType.returnType(), paramTypes) : noCalleeThisType;

    if (callSiteParamCount < getArity()) {
        return generalized.appendParameterTypes(Collections.<Class<?>>nCopies(getArity() - callSiteParamCount, Object.class));
    }
    return generalized;
}

源代码9 项目： openjdk-8-source 文件： ValueConversions.java

public static MethodHandle identity(Wrapper wrap) {
    EnumMap<Wrapper, MethodHandle> cache = CONSTANT_FUNCTIONS[1];
    MethodHandle mh = cache.get(wrap);
    if (mh != null) {
        return mh;
    }
    // slow path
    MethodType type = MethodType.methodType(wrap.primitiveType());
    if (wrap != Wrapper.VOID)
        type = type.appendParameterTypes(wrap.primitiveType());
    try {
        mh = IMPL_LOOKUP.findStatic(THIS_CLASS, "identity", type);
    } catch (ReflectiveOperationException ex) {
        mh = null;
    }
    if (mh == null && wrap == Wrapper.VOID) {
        mh = EMPTY;  // #(){} : #()void
    }
    if (mh != null) {
        cache.put(wrap, mh);
        return mh;
    }

    if (mh != null) {
        cache.put(wrap, mh);
        return mh;
    }
    throw new IllegalArgumentException("cannot find identity for " + wrap);
}

源代码10 项目： openjdk-8 文件： ValueConversions.java

public static MethodHandle identity(Wrapper wrap) {
    EnumMap<Wrapper, MethodHandle> cache = CONSTANT_FUNCTIONS[1];
    MethodHandle mh = cache.get(wrap);
    if (mh != null) {
        return mh;
    }
    // slow path
    MethodType type = MethodType.methodType(wrap.primitiveType());
    if (wrap != Wrapper.VOID)
        type = type.appendParameterTypes(wrap.primitiveType());
    try {
        mh = IMPL_LOOKUP.findStatic(THIS_CLASS, "identity", type);
    } catch (ReflectiveOperationException ex) {
        mh = null;
    }
    if (mh == null && wrap == Wrapper.VOID) {
        mh = EMPTY;  // #(){} : #()void
    }
    if (mh != null) {
        cache.put(wrap, mh);
        return mh;
    }

    if (mh != null) {
        cache.put(wrap, mh);
        return mh;
    }
    throw new IllegalArgumentException("cannot find identity for " + wrap);
}