Package java.lang.invoke

Examples of java.lang.invoke.CallSite

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    public static CallSite array(Lookup lookup, String name, MethodType type) {
        MethodHandle handle = Binder
                .from(type)
                .collect(1, IRubyObject[].class)
                .invokeStaticQuiet(MethodHandles.lookup(), Bootstrap.class, "array");
        CallSite site = new ConstantCallSite(handle);
        return site;
    }
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    return result.toString();
  }

  @Test
  public void check_bootstrap() throws Throwable {
    CallSite callSite = ClosureReferenceSupport.bootstrap(lookup(), "to_list", methodType(MethodHandle.class), KLASS, 2, 0);
    assertThat(callSite.type(), is(methodType(MethodHandle.class)));

    Object result = callSite.dynamicInvoker().invoke();
    assertThat(result, instanceOf(MethodHandle.class));

    MethodHandle handle = (MethodHandle) result;
    assertThat(handle.type(), is(methodType(Object.class, Object.class, Object.class)));
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    assertThat(((List) result).size(), is(2));
  }

  @Test
  public void check_bootstrap_varargs() throws Throwable {
    CallSite callSite = ClosureReferenceSupport.bootstrap(lookup(), "concat", methodType(MethodHandle.class), KLASS, 0, 1);
    assertThat(callSite.type(), is(methodType(MethodHandle.class)));

    Object result = callSite.dynamicInvoker().invoke();
    assertThat(result, instanceOf(MethodHandle.class));

    MethodHandle handle = (MethodHandle) result;
    assertThat(handle.type(), is(methodType(Object.class, Object[].class)));
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  @Test
  public void check_bootstrapFunctionInvocation_on_local_static_method() throws Throwable {
    Lookup lookup = lookup();
    MethodType type = MethodType.methodType(Object.class, Object.class);
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, "echo", type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments("Hey!"), is("Hey!"));
  }
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  @Test
  public void check_bootstrapFunctionInvocation_on_class_static_method() throws Throwable {
    Lookup lookup = lookup();
    MethodType type = MethodType.methodType(Object.class);
    String name = "fr#insalyon#citi#golo#runtime#FunctionCallSupportTest$Foo#someInt";
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((Integer) callSite.dynamicInvoker().invokeWithArguments(), is(42));
  }
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  @Test
  public void check_bootstrapFunctionInvocation_on_static_field() throws Throwable {
    Lookup lookup = lookup();
    MethodType type = MethodType.methodType(Object.class);
    String name = "fr#insalyon#citi#golo#runtime#FunctionCallSupportTest$Foo#FOO";
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments(), is("Foo"));
  }
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  @Test(expectedExceptions = NoSuchMethodError.class)
  public void check_bootstrapFunctionInvocation_on_unexisting_method() throws Throwable {
    Lookup lookup = lookup();
    MethodType type = MethodType.methodType(Object.class, Object.class);
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, "echoz", type);
    callSite.dynamicInvoker().invokeWithArguments("foo");
  }
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  @Test(expectedExceptions = NoSuchMethodError.class)
  public void check_bootstrapFunctionInvocation_on_method_with_wrong_number_of_parameters() throws Throwable {
    Lookup lookup = lookup();
    MethodType type = MethodType.methodType(Object.class, Object.class, Object.class);
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, "echo", type);
    callSite.dynamicInvoker().invokeWithArguments("foo", "foo");
  }
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  @Test
  public void check_varargs() throws Throwable {
    Lookup lookup = lookup();
    String name = "fr#insalyon#citi#golo#runtime#FunctionCallSupportTest$Foo#concat";
    MethodType type = MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class);
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments("-", "a", "b", "c"), is("a-b-c"));

    type = MethodType.methodType(Object.class, Object.class, Object.class);
    callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments("-", new String[]{"a", "b", "c"}), is("a-b-c"));
  }
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  public void check_varargs_only() throws Throwable {
    Lookup lookup = lookup();
    String name = "fr#insalyon#citi#golo#runtime#FunctionCallSupportTest$Foo#defaultConcat";

    MethodType type = MethodType.methodType(Object.class, Object.class, Object.class, Object.class);
    CallSite callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments("a", "b", "c"), is("a-b-c"));

    type = MethodType.methodType(Object.class, Object.class);
    callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments("a"), is("a"));

    type = MethodType.methodType(Object.class);
    callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments(), is(""));

    type = MethodType.methodType(Object.class, Object.class);
    callSite = FunctionCallSupport.bootstrap(lookup, name, type);
    assertThat((String) callSite.dynamicInvoker().invokeWithArguments((Object)new String[]{"a", "b", "c"}), is("a-b-c"));
  }
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  • fr.insalyon.citi.golo.runtime.ClosureCallSupportTest
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