Examples with MethodHandle java.lang.invoke.MethodHandle used on opensource projects

Example 46 with MethodHandle

use of java.lang.invoke.MethodHandle in project invokebinder by headius.

the class BinderTest method testFrom.

@Test
public void testFrom() throws Throwable {
    MethodHandle target = Subjects.concatHandle();
    Binder binder1 = Binder.from(String.class, String.class, Object.class).drop(1);
    MethodHandle handle = Binder.from(binder1).insert(1, "world").invoke(target);
    assertEquals(MethodType.methodType(String.class, String.class, Object.class), handle.type());
    assertEquals("Hello, world", (String) handle.invokeExact("Hello, ", new Object()));
}

Example 47 with MethodHandle

use of java.lang.invoke.MethodHandle in project invokebinder by headius.

the class BinderTest method testAppend.

@Test
public void testAppend() throws Throwable {
    MethodHandle target = Subjects.concatHandle();
    MethodHandle handle = Binder.from(String.class, String.class, Object.class).append("world").drop(1).invoke(target);
    assertEquals(MethodType.methodType(String.class, String.class, Object.class), handle.type());
    assertEquals("Hello, world", (String) handle.invokeExact("Hello, ", new Object()));
    MethodHandle target2 = Subjects.concatCharSequenceHandle();
    MethodHandle handle2 = Binder.from(String.class, String.class, Object.class).append(CharSequence.class, "world").drop(1).invoke(target2);
    assertEquals(MethodType.methodType(String.class, String.class, Object.class), handle2.type());
    assertEquals("Hello, world", (String) handle2.invokeExact("Hello, ", new Object()));
}

Example 48 with MethodHandle

use of java.lang.invoke.MethodHandle in project invokebinder by headius.

the class BinderTest method testSetField2.

@Test
public void testSetField2() throws Throwable {
    Fields fields = new Fields();
    MethodHandle handle = Binder.from(void.class, Fields.class, String.class).setFieldQuiet(LOOKUP, "instanceField");
    assertEquals(MethodType.methodType(void.class, Fields.class, String.class), handle.type());
    handle.invokeExact(fields, "modified");
    assertEquals("modified", fields.instanceField);
}

Example 49 with MethodHandle

use of java.lang.invoke.MethodHandle in project invokebinder by headius.

the class BinderTest method testTryFinally.

@Test
public void testTryFinally() throws Throwable {
    MethodHandle post = Binder.from(void.class, String[].class).invokeStatic(LOOKUP, BinderTest.class, "finallyLogic");
    MethodHandle handle = Binder.from(void.class, String[].class).tryFinally(post).invokeStatic(LOOKUP, BinderTest.class, "setZeroToFoo");
    assertEquals(MethodType.methodType(void.class, String[].class), handle.type());
    String[] stringAry = new String[1];
    handle.invokeExact(stringAry);
    assertEquals("foofinally", stringAry[0]);
}

Example 50 with MethodHandle

use of java.lang.invoke.MethodHandle in project invokebinder by headius.

the class BinderTest method testTryFinallyReturn.

@Test
public void testTryFinallyReturn() throws Throwable {
    MethodHandle post = Binder.from(void.class, String[].class).invokeStatic(LOOKUP, BinderTest.class, "finallyLogic");
    MethodHandle handle = Binder.from(int.class, String[].class).tryFinally(post).invokeStatic(LOOKUP, BinderTest.class, "setZeroToFooReturnInt");
    assertEquals(MethodType.methodType(int.class, String[].class), handle.type());
    String[] stringAry = new String[1];
    assertEquals(1, (int) handle.invokeExact(stringAry));
    assertEquals("foofinally", stringAry[0]);
}