Java 类jdk.nashorn.internal.runtime.linker.JavaAdapterFactory 实例源码

private <T> T getInterfaceInner(final Object thiz, final Class<T> clazz) {
    if (clazz == null || !clazz.isInterface()) {
        throw new IllegalArgumentException(getMessage("interface.class.expected"));
    }

    // perform security access check as early as possible
    final SecurityManager sm = System.getSecurityManager();
    if (sm != null) {
        if (! Modifier.isPublic(clazz.getModifiers())) {
            throw new SecurityException(getMessage("implementing.non.public.interface", clazz.getName()));
        }
        Context.checkPackageAccess(clazz);
    }

    ScriptObject realSelf = null;
    ScriptObject realGlobal = null;
    if(thiz == null) {
        // making interface out of global functions
        realSelf = realGlobal = getNashornGlobalFrom(context);
    } else if (thiz instanceof ScriptObjectMirror) {
        final ScriptObjectMirror mirror = (ScriptObjectMirror)thiz;
        realSelf = mirror.getScriptObject();
        realGlobal = mirror.getHomeGlobal();
        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    } else if (thiz instanceof ScriptObject) {
        // called from script code.
        realSelf = (ScriptObject)thiz;
        realGlobal = Context.getGlobal();
        if (realGlobal == null) {
            throw new IllegalArgumentException(getMessage("no.current.nashorn.global"));
        }

        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    }

    if (realSelf == null) {
        throw new IllegalArgumentException(getMessage("interface.on.non.script.object"));
    }

    try {
        final ScriptObject oldGlobal = Context.getGlobal();
        final boolean globalChanged = (oldGlobal != realGlobal);
        try {
            if (globalChanged) {
                Context.setGlobal(realGlobal);
            }

            if (! isInterfaceImplemented(clazz, realSelf)) {
                return null;
            }
            return clazz.cast(JavaAdapterFactory.getConstructor(realSelf.getClass(), clazz,
                    MethodHandles.publicLookup()).invoke(realSelf));
        } finally {
            if (globalChanged) {
                Context.setGlobal(oldGlobal);
            }
        }
    } catch(final RuntimeException|Error e) {
        throw e;
    } catch(final Throwable t) {
        throw new RuntimeException(t);
    }
}

private <T> T getInterfaceInner(final Object thiz, final Class<T> clazz) {
    if (clazz == null || !clazz.isInterface()) {
        throw new IllegalArgumentException(getMessage("interface.class.expected"));
    }

    // perform security access check as early as possible
    final SecurityManager sm = System.getSecurityManager();
    if (sm != null) {
        if (! Modifier.isPublic(clazz.getModifiers())) {
            throw new SecurityException(getMessage("implementing.non.public.interface", clazz.getName()));
        }
        Context.checkPackageAccess(clazz.getName());
    }

    ScriptObject realSelf = null;
    ScriptObject realGlobal = null;
    if(thiz == null) {
        // making interface out of global functions
        realSelf = realGlobal = getNashornGlobalFrom(context);
    } else if (thiz instanceof ScriptObjectMirror) {
        final ScriptObjectMirror mirror = (ScriptObjectMirror)thiz;
        realSelf = mirror.getScriptObject();
        realGlobal = mirror.getHomeGlobal();
        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    } else if (thiz instanceof ScriptObject) {
        // called from script code.
        realSelf = (ScriptObject)thiz;
        realGlobal = Context.getGlobal();
        if (realGlobal == null) {
            throw new IllegalArgumentException(getMessage("no.current.nashorn.global"));
        }

        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    }

    if (realSelf == null) {
        throw new IllegalArgumentException(getMessage("interface.on.non.script.object"));
    }

    try {
        final ScriptObject oldGlobal = Context.getGlobal();
        final boolean globalChanged = (oldGlobal != realGlobal);
        try {
            if (globalChanged) {
                Context.setGlobal(realGlobal);
            }

            if (! isInterfaceImplemented(clazz, realSelf)) {
                return null;
            }
            return clazz.cast(JavaAdapterFactory.getConstructor(realSelf.getClass(), clazz).invoke(realSelf));
        } finally {
            if (globalChanged) {
                Context.setGlobal(oldGlobal);
            }
        }
    } catch(final RuntimeException|Error e) {
        throw e;
    } catch(final Throwable t) {
        throw new RuntimeException(t);
    }
}

private <T> T getInterfaceInner(final Object thiz, final Class<T> clazz) {
    if (clazz == null || !clazz.isInterface()) {
        throw new IllegalArgumentException(getMessage("interface.class.expected"));
    }

    // perform security access check as early as possible
    final SecurityManager sm = System.getSecurityManager();
    if (sm != null) {
        if (! Modifier.isPublic(clazz.getModifiers())) {
            throw new SecurityException(getMessage("implementing.non.public.interface", clazz.getName()));
        }
        Context.checkPackageAccess(clazz.getName());
    }

    ScriptObject realSelf = null;
    ScriptObject realGlobal = null;
    if(thiz == null) {
        // making interface out of global functions
        realSelf = realGlobal = getNashornGlobalFrom(context);
    } else if (thiz instanceof ScriptObjectMirror) {
        final ScriptObjectMirror mirror = (ScriptObjectMirror)thiz;
        realSelf = mirror.getScriptObject();
        realGlobal = mirror.getHomeGlobal();
        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    } else if (thiz instanceof ScriptObject) {
        // called from script code.
        realSelf = (ScriptObject)thiz;
        realGlobal = Context.getGlobal();
        if (realGlobal == null) {
            throw new IllegalArgumentException(getMessage("no.current.nashorn.global"));
        }

        if (! isOfContext(realGlobal, nashornContext)) {
            throw new IllegalArgumentException(getMessage("script.object.from.another.engine"));
        }
    }

    if (realSelf == null) {
        throw new IllegalArgumentException(getMessage("interface.on.non.script.object"));
    }

    try {
        final ScriptObject oldGlobal = Context.getGlobal();
        final boolean globalChanged = (oldGlobal != realGlobal);
        try {
            if (globalChanged) {
                Context.setGlobal(realGlobal);
            }

            if (! isInterfaceImplemented(clazz, realSelf)) {
                return null;
            }
            return clazz.cast(JavaAdapterFactory.getConstructor(realSelf.getClass(), clazz).invoke(realSelf));
        } finally {
            if (globalChanged) {
                Context.setGlobal(oldGlobal);
            }
        }
    } catch(final RuntimeException|Error e) {
        throw e;
    } catch(final Throwable t) {
        throw new RuntimeException(t);
    }
}