Java Code Examples for org.eclipse.xtext.common.types.JvmGenericType#getMembers()

@Test public void testInferredFunction_02() throws Exception {
	XtendFile xtendFile = file("class Foo { def create result: newArrayList(s) newList(String s) {} }");
	JvmGenericType inferredType = getInferredType(xtendFile);
	XtendClass xtendClass = (XtendClass) xtendFile.getXtendTypes().get(0);
	EList<JvmMember> jvmMembers = inferredType.getMembers();
	assertEquals(4, jvmMembers.size());
	JvmMember jvmMember = jvmMembers.get(1);
	assertTrue(jvmMember instanceof JvmOperation);
	XtendFunction xtendFunction = (XtendFunction) xtendClass.getMembers().get(0);
	assertEquals(xtendFunction.getName(), jvmMember.getSimpleName());
	assertEquals(JvmVisibility.PUBLIC, jvmMember.getVisibility());
	assertEquals("java.util.ArrayList<java.lang.String>", ((JvmOperation) jvmMember).getReturnType().getIdentifier());
	
	JvmField cacheVar = (JvmField) jvmMembers.get(2);
	assertEquals("_createCache_" + xtendFunction.getName(), cacheVar.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, cacheVar.getVisibility());
	assertEquals("java.util.HashMap<java.util.ArrayList<? extends java.lang.Object>, java.util.ArrayList<java.lang.String>>", cacheVar.getType().getIdentifier());
	
	JvmOperation privateInitializer = (JvmOperation) jvmMembers.get(3);
	assertEquals("_init_"+xtendFunction.getName(), privateInitializer.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, privateInitializer.getVisibility());
	assertEquals("java.util.ArrayList<java.lang.String>", privateInitializer.getParameters().get(0).getParameterType().getIdentifier());
	assertEquals("java.lang.String", privateInitializer.getParameters().get(1).getParameterType().getIdentifier());
}
 

@Test
public void test_staticNestedTypes_constructor() {
	String typeName = Bug347739.class.getName();
	JvmGenericType type = (JvmGenericType) getTypeProvider().findTypeByName(typeName);
	List<JvmMember> members = type.getMembers();
	for (JvmMember member : members) {
		if (member instanceof JvmGenericType) {
			if ("StackItem".equals(member.getSimpleName())) {
				JvmGenericType stackItem = (JvmGenericType) member;
				Iterable<JvmConstructor> constructors = stackItem.getDeclaredConstructors();
				for (JvmConstructor constructor : constructors) {
					assertEquals(2, constructor.getParameters().size());
				}
				return;
			}
		}
	}
	fail("could not find inner class");
}
 

@Test public void testDispatchFunction_00() throws Exception {
	XtendFile xtendFile = file("class Foo { def dispatch foo(Object x) {null} def dispatch foo(String x) {null}}");
	JvmGenericType inferredType = getInferredType(xtendFile);

	// one main dispatch
	Iterable<JvmOperation> operations = inferredType.getDeclaredOperations();
	JvmOperation dispatch = findByNameAndFirstParameterType(operations, "foo", Object.class);
	assertEquals("java.lang.Object", dispatch.getReturnType().getIdentifier());
	
	// two internal case methods
	findByNameAndFirstParameterType(operations, "_foo", Object.class);
	findByNameAndFirstParameterType(operations, "_foo", String.class);
	for(JvmMember member: inferredType.getMembers()) {
		if (member instanceof JvmExecutable) {
			if (member.getSimpleName().startsWith("_"))
				assertEquals(JvmVisibility.PROTECTED, member.getVisibility());
			else
				assertEquals(JvmVisibility.PUBLIC, member.getVisibility());
		} else {
			assertEquals(JvmVisibility.PRIVATE, member.getVisibility());
		}
	}
}
 

@Test
public void test_staticNestedTypes_constructor() {
	String typeName = Bug347739.class.getName();
	JvmGenericType type = (JvmGenericType) getTypeProvider().findTypeByName(typeName);
	List<JvmMember> members = type.getMembers();
	for (JvmMember member : members) {
		if (member instanceof JvmGenericType) {
			if ("StackItem".equals(member.getSimpleName())) {
				JvmGenericType stackItem = (JvmGenericType) member;
				Iterable<JvmConstructor> constructors = stackItem.getDeclaredConstructors();
				for (JvmConstructor constructor : constructors) {
					assertEquals(2, constructor.getParameters().size());
				}
				return;
			}
		}
	}
	fail("could not find inner class");
}
 

@Test public void testXtendField_00() throws Exception {
	XtendFile xtendFile = file("class Foo { @Inject String string }");
	JvmGenericType type = getInferredType(xtendFile);
	Iterable<JvmField> iterable = type.getDeclaredFields();
	JvmField next = iterable.iterator().next();
	assertEquals("string",next.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, next.getVisibility());
	assertEquals("java.lang.String", next.getType().getIdentifier());
	for(JvmMember member: type.getMembers()) {
		if (member instanceof JvmExecutable) {
			assertEquals(JvmVisibility.PUBLIC, member.getVisibility());
		} else {
			assertEquals(JvmVisibility.PRIVATE, member.getVisibility());
		}
	}
}
 

@Test public void testInferredFunction_05() throws Exception {
	XtendFile xtendFile = file("class Foo { def Iterable<? extends CharSequence> create result: newArrayList(s) newList(String s) {} }");
	JvmGenericType inferredType = getInferredType(xtendFile);
	XtendClass xtendClass = (XtendClass) xtendFile.getXtendTypes().get(0);
	EList<JvmMember> jvmMembers = inferredType.getMembers();
	assertEquals(4, jvmMembers.size());
	JvmMember jvmMember = jvmMembers.get(1);
	assertTrue(jvmMember instanceof JvmOperation);
	XtendFunction xtendFunction = (XtendFunction) xtendClass.getMembers().get(0);
	assertEquals(xtendFunction.getName(), jvmMember.getSimpleName());
	assertEquals(JvmVisibility.PUBLIC, jvmMember.getVisibility());
	assertEquals("java.lang.Iterable<? extends java.lang.CharSequence>", ((JvmOperation) jvmMember).getReturnType().getIdentifier());
	
	JvmField cacheVar = (JvmField) jvmMembers.get(2);
	assertEquals("_createCache_" + xtendFunction.getName(), cacheVar.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, cacheVar.getVisibility());
	assertEquals("java.util.HashMap<java.util.ArrayList<? extends java.lang.Object>, java.lang.Iterable<? extends java.lang.CharSequence>>", cacheVar.getType().getIdentifier());
	
	JvmOperation privateInitializer = (JvmOperation) jvmMembers.get(3);
	assertEquals("_init_"+xtendFunction.getName(), privateInitializer.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, privateInitializer.getVisibility());
	assertEquals("java.util.ArrayList<java.lang.String>", privateInitializer.getParameters().get(0).getParameterType().getIdentifier());
	assertEquals("java.lang.String", privateInitializer.getParameters().get(1).getParameterType().getIdentifier());
}
 

@Test
public void testCompilationStrategy() {
  try {
    final XExpression expression = this.expression("null", false);
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      EList<JvmMember> _members = it.getMembers();
      JvmField _field = this.builder.toField(expression, "x", this.typeRef(expression, String.class));
      this.builder.<JvmField>operator_add(_members, _field);
      EList<JvmMember> _members_1 = it.getMembers();
      JvmOperation _getter = this.builder.toGetter(expression, "x", this.typeRef(expression, String.class));
      this.builder.<JvmOperation>operator_add(_members_1, _getter);
      EList<JvmMember> _members_2 = it.getMembers();
      JvmOperation _setter = this.builder.toSetter(expression, "x", this.typeRef(expression, String.class));
      this.builder.<JvmOperation>operator_add(_members_2, _setter);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Foo", _function);
    final Class<?> compiled = this.compile(expression.eResource(), clazz);
    final Object inst = compiled.getDeclaredConstructor().newInstance();
    final Method getter = compiled.getMethod("getX");
    final Method setter = compiled.getMethod("setX", String.class);
    setter.invoke(inst, "FOO");
    Assert.assertEquals("FOO", getter.invoke(inst));
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Test
public void testBug377925No_Nullpointer() {
  try {
    final XExpression expression = this.expression("[Object o| null]");
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      EList<JvmMember> _members = it.getMembers();
      final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
        this.builder.setBody(it_1, expression);
      };
      JvmOperation _method = this.builder.toMethod(expression, "doStuff", this.references.getTypeForName("java.lang.Object", expression), _function_1);
      this.builder.<JvmOperation>operator_add(_members, _method);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Foo", _function);
    this.compile(expression.eResource(), clazz);
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Test
public void test_staticNestedTypes_constructor() {
	String typeName = Bug347739.class.getName();
	JvmGenericType type = (JvmGenericType) getTypeProvider().findTypeByName(typeName);
	List<JvmMember> members = type.getMembers();
	for (JvmMember member : members) {
		if (member instanceof JvmGenericType) {
			if ("StackItem".equals(member.getSimpleName())) {
				JvmGenericType stackItem = (JvmGenericType) member;
				Iterable<JvmConstructor> constructors = stackItem.getDeclaredConstructors();
				for (JvmConstructor constructor : constructors) {
					assertEquals(2, constructor.getParameters().size());
				}
				return;
			}
		}
	}
	fail("could not find inner class");
}
 

@Test public void testInferredFunction_06() throws Exception {
	XtendFile xtendFile = file("class Foo { def Iterable<? super CharSequence> create result: newArrayList(s) newList(String s) {} }");
	JvmGenericType inferredType = getInferredType(xtendFile);
	XtendClass xtendClass = (XtendClass) xtendFile.getXtendTypes().get(0);
	EList<JvmMember> jvmMembers = inferredType.getMembers();
	assertEquals(4, jvmMembers.size());
	JvmMember jvmMember = jvmMembers.get(1);
	assertTrue(jvmMember instanceof JvmOperation);
	XtendFunction xtendFunction = (XtendFunction) xtendClass.getMembers().get(0);
	assertEquals(xtendFunction.getName(), jvmMember.getSimpleName());
	assertEquals(JvmVisibility.PUBLIC, jvmMember.getVisibility());
	assertEquals("java.lang.Iterable<? extends java.lang.Object & super java.lang.CharSequence>", ((JvmOperation) jvmMember).getReturnType().getIdentifier());
	
	JvmField cacheVar = (JvmField) jvmMembers.get(2);
	assertEquals("_createCache_" + xtendFunction.getName(), cacheVar.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, cacheVar.getVisibility());
	assertEquals("java.util.HashMap<java.util.ArrayList<? extends java.lang.Object>, java.lang.Iterable<? extends java.lang.Object & super java.lang.CharSequence>>", cacheVar.getType().getIdentifier());
	
	JvmOperation privateInitializer = (JvmOperation) jvmMembers.get(3);
	assertEquals("_init_"+xtendFunction.getName(), privateInitializer.getSimpleName());
	assertEquals(JvmVisibility.PRIVATE, privateInitializer.getVisibility());
	assertEquals("java.util.ArrayList<java.lang.CharSequence>", privateInitializer.getParameters().get(0).getParameterType().getIdentifier());
	assertEquals("java.lang.String", privateInitializer.getParameters().get(1).getParameterType().getIdentifier());
}
 

@Test
public void testBug426073() {
  try {
    final XExpression expression = this.expression("org.eclipse.emf.common.util.URI.createURI(\"dummy\")");
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      EList<JvmMember> _members = it.getMembers();
      final Procedure1<JvmField> _function_1 = (JvmField it_1) -> {
        this.builder.setInitializer(it_1, expression);
      };
      JvmField _field = this.builder.toField(expression, "URI", this.typeRef(expression, URI.class), _function_1);
      this.builder.<JvmField>operator_add(_members, _field);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Foo", _function);
    this.compile(expression.eResource(), clazz);
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Test
public void testNestedAnnotationType() {
  try {
    final XExpression expression = this.expression("42");
    final JvmGenericType outerClass = this.builder.toClass(expression, "my.outer.Clazz");
    EList<JvmMember> _members = outerClass.getMembers();
    final Procedure1<JvmAnnotationType> _function = (JvmAnnotationType it) -> {
      EList<JvmMember> _members_1 = it.getMembers();
      final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
        this.builder.setBody(it_1, expression);
      };
      JvmOperation _method = this.builder.toMethod(expression, "theTruth", this.references.getTypeForName(int.class, expression), _function_1);
      this.builder.<JvmOperation>operator_add(_members_1, _method);
    };
    JvmAnnotationType _annotationType = this.builder.toAnnotationType(expression, "MyAnnotation", _function);
    this.builder.<JvmAnnotationType>operator_add(_members, _annotationType);
    final Class<?> compiled = IterableExtensions.<Class<?>>head(((Iterable<Class<?>>)Conversions.doWrapArray(this.compile(expression.eResource(), outerClass).getDeclaredClasses())));
    Assert.assertEquals("my.outer.Clazz.MyAnnotation", compiled.getCanonicalName());
    Assert.assertEquals(Integer.valueOf(42), IterableExtensions.<Method>head(((Iterable<Method>)Conversions.doWrapArray(compiled.getDeclaredMethods()))).getDefaultValue());
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Test
public void testBug380754_2() {
  try {
    final XExpression expression = this.expression("null");
    final JvmAnnotationReferenceBuilder jvmAnnotationReferenceBuilder = this.jvmAnnotationReferenceBuilderFactory.create(expression.eResource().getResourceSet());
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      EList<JvmMember> _members = it.getMembers();
      final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
        this.builder.setBody(it_1, expression);
        final JvmFormalParameter parameter = this.builder.toParameter(expression, "s", this.references.getTypeForName(String.class, expression));
        EList<JvmFormalParameter> _parameters = it_1.getParameters();
        this.builder.<JvmFormalParameter>operator_add(_parameters, parameter);
        EList<JvmAnnotationReference> _annotations = parameter.getAnnotations();
        JvmAnnotationReference _annotationRef = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotation.class);
        this.builder.<JvmAnnotationReference>operator_add(_annotations, _annotationRef);
        EList<JvmAnnotationReference> _annotations_1 = parameter.getAnnotations();
        JvmAnnotationReference _annotationRef_1 = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotation2.class);
        this.builder.<JvmAnnotationReference>operator_add(_annotations_1, _annotationRef_1);
      };
      JvmOperation _method = this.builder.toMethod(expression, "doStuff", this.references.getTypeForName("java.lang.Object", expression), _function_1);
      this.builder.<JvmOperation>operator_add(_members, _method);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Foo", _function);
    this.compile(expression.eResource(), clazz);
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

public JvmConstructor getSuperTypeConstructor(AnonymousClass anonymousClass) {
	JvmGenericType superType = getSuperType(anonymousClass);
	if(superType != null) {
		JvmConstructor constructor = anonymousClass.getConstructorCall().getConstructor();
		for(JvmMember superMember: superType.getMembers()) {
			if(superMember instanceof JvmConstructor && isSameSignature(constructor, (JvmConstructor) superMember)) 
				return (JvmConstructor) superMember;
		}
	}
	return null;
}
 

protected void _infer(final Model m, final IJvmDeclaredTypeAcceptor acceptor, final boolean prelinkingPhase) {
  final XBlockExpression e = m.getBlock();
  final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
    EList<JvmMember> _members = it.getMembers();
    final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
      EList<JvmTypeReference> _exceptions = it_1.getExceptions();
      JvmTypeReference _typeRef = this._typeReferenceBuilder.typeRef(Throwable.class);
      this._jvmTypesBuilder.<JvmTypeReference>operator_add(_exceptions, _typeRef);
      this._jvmTypesBuilder.setBody(it_1, e);
    };
    JvmOperation _method = this._jvmTypesBuilder.toMethod(e, "myMethod", this._jvmTypesBuilder.inferredType(), _function_1);
    this._jvmTypesBuilder.<JvmOperation>operator_add(_members, _method);
  };
  acceptor.<JvmGenericType>accept(this._jvmTypesBuilder.toClass(e, this.name(e.eResource())), _function);
}
 

@Test
public void testBug380754() {
  try {
    final XExpression expression = this.expression("null");
    final JvmAnnotationReferenceBuilder jvmAnnotationReferenceBuilder = this.jvmAnnotationReferenceBuilderFactory.create(expression.eResource().getResourceSet());
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      EList<JvmMember> _members = it.getMembers();
      final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
        this.builder.setBody(it_1, expression);
        final JvmAnnotationReference annotation = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotations.class);
        final JvmAnnotationAnnotationValue annotationAnnotationValue = this.typesFactory.createJvmAnnotationAnnotationValue();
        EList<JvmAnnotationReference> _values = annotationAnnotationValue.getValues();
        JvmAnnotationReference _annotationRef = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotation.class);
        this.builder.<JvmAnnotationReference>operator_add(_values, _annotationRef);
        EList<JvmAnnotationReference> _values_1 = annotationAnnotationValue.getValues();
        JvmAnnotationReference _annotationRef_1 = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotation.class);
        this.builder.<JvmAnnotationReference>operator_add(_values_1, _annotationRef_1);
        EList<JvmAnnotationReference> _values_2 = annotationAnnotationValue.getValues();
        JvmAnnotationReference _annotationRef_2 = jvmAnnotationReferenceBuilder.annotationRef(TestAnnotation.class);
        this.builder.<JvmAnnotationReference>operator_add(_values_2, _annotationRef_2);
        EList<JvmAnnotationValue> _explicitValues = annotation.getExplicitValues();
        this.builder.<JvmAnnotationAnnotationValue>operator_add(_explicitValues, annotationAnnotationValue);
        EList<JvmAnnotationReference> _annotations = it_1.getAnnotations();
        this.builder.<JvmAnnotationReference>operator_add(_annotations, annotation);
      };
      JvmOperation _method = this.builder.toMethod(expression, "doStuff", this.references.getTypeForName("java.lang.Object", expression), _function_1);
      this.builder.<JvmOperation>operator_add(_members, _method);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Foo", _function);
    this.compile(expression.eResource(), clazz);
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

protected void assertMembers(String typeName, Set<String> memberNames) {
	JvmGenericType type = (JvmGenericType) getTypeProvider().findTypeByName(typeName);
	assertEquals(memberNames.size(), type.getMembers().size());
	for (JvmMember member : type.getMembers()) {
		assertTrue(member.getIdentifier(), member instanceof JvmOperation);
		JvmOperation op = (JvmOperation) member;
		assertTrue(op.getSimpleName(), memberNames.remove(op.getSimpleName()));
	}
	assertTrue(memberNames.isEmpty());
}
 

protected void assertMembers(String typeName, Set<String> memberNames) {
	JvmGenericType type = (JvmGenericType) getTypeProvider().findTypeByName(typeName);
	List<JvmMember> members = type.getMembers();
	assertEquals(memberNames.size(), members.size());
	for (org.eclipse.xtext.common.types.JvmMember member : members) {
		assertTrue(member.getIdentifier(), member instanceof JvmOperation);
		JvmOperation op = (JvmOperation) member;
		assertTrue(op.getSimpleName(), memberNames.remove(op.getSimpleName()));
	}
	assertTrue(memberNames.isEmpty());
}
 

@Test
public void bug390290InnerClassMemberImport() {
  try {
    final XExpression expression = this.expression("null");
    final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
      final JvmGenericType innerClass = this.builder.toClass(it, "InnerClass");
      final JvmGenericType innerClassString = this.builder.toClass(it, "String");
      EList<JvmMember> _members = it.getMembers();
      this.builder.<JvmGenericType>operator_add(_members, innerClass);
      EList<JvmMember> _members_1 = it.getMembers();
      this.builder.<JvmGenericType>operator_add(_members_1, innerClassString);
      EList<JvmMember> _members_2 = it.getMembers();
      final Procedure1<JvmOperation> _function_1 = (JvmOperation fooMethod) -> {
        EList<JvmFormalParameter> _parameters = fooMethod.getParameters();
        JvmFormalParameter _parameter = this.builder.toParameter(it, "p1", this.references.createTypeRef(innerClass));
        this.builder.<JvmFormalParameter>operator_add(_parameters, _parameter);
        EList<JvmFormalParameter> _parameters_1 = fooMethod.getParameters();
        JvmFormalParameter _parameter_1 = this.builder.toParameter(it, "p2", this.references.createTypeRef(innerClassString));
        this.builder.<JvmFormalParameter>operator_add(_parameters_1, _parameter_1);
        this.builder.setBody(fooMethod, expression);
      };
      JvmOperation _method = this.builder.toMethod(it, "foo", this.references.getTypeForName(String.class, expression), _function_1);
      this.builder.<JvmOperation>operator_add(_members_2, _method);
    };
    final JvmGenericType clazz = this.builder.toClass(expression, "my.test.Outer", _function);
    expression.eResource().eSetDeliver(false);
    EList<EObject> _contents = expression.eResource().getContents();
    this.builder.<JvmGenericType>operator_add(_contents, clazz);
    expression.eResource().eSetDeliver(true);
    final InMemoryFileSystemAccess fsa = new InMemoryFileSystemAccess();
    this.generator.doGenerate(expression.eResource(), fsa);
    Map<String, CharSequence> _textFiles = fsa.getTextFiles();
    String _replace = clazz.getIdentifier().replace(".", "/");
    String _plus = (IFileSystemAccess.DEFAULT_OUTPUT + _replace);
    String _plus_1 = (_plus + ".java");
    final String code = _textFiles.get(_plus_1).toString();
    Assert.assertFalse(code.contains("import"));
    Assert.assertTrue(code, code.contains("java.lang.String foo"));
    final Class<?> compiledClass = this.javaCompiler.compileToClass(clazz.getIdentifier(), code);
    this.helper.assertNoErrors(IterableExtensions.<EObject>head(expression.eResource().getContents()));
    Assert.assertEquals(2, ((List<Class<?>>)Conversions.doWrapArray(compiledClass.getDeclaredClasses())).size());
    Assert.assertNotNull(compiledClass.getMethod("foo", IterableExtensions.<Class<?>>head(((Iterable<Class<?>>)Conversions.doWrapArray(compiledClass.getDeclaredClasses()))), IterableExtensions.<Class<?>>last(((Iterable<Class<?>>)Conversions.doWrapArray(compiledClass.getDeclaredClasses())))));
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

/**
 * The dispatch method {@code infer} is called for each instance of the
 * given element's type that is contained in a resource.
 * 
 * @param element
 *            the model to create one or more
 *            {@link org.eclipse.xtext.common.types.JvmDeclaredType declared
 *            types} from.
 * @param acceptor
 *            each created
 *            {@link org.eclipse.xtext.common.types.JvmDeclaredType type}
 *            without a container should be passed to the acceptor in order
 *            get attached to the current resource. The acceptor's
 *            {@link IJvmDeclaredTypeAcceptor#accept(org.eclipse.xtext.common.types.JvmDeclaredType)
 *            accept(..)} method takes the constructed empty type for the
 *            pre-indexing phase. This one is further initialized in the
 *            indexing phase using the closure you pass to the returned
 *            {@link org.eclipse.xtext.xbase.jvmmodel.IJvmDeclaredTypeAcceptor.IPostIndexingInitializing#initializeLater(org.eclipse.xtext.xbase.lib.Procedures.Procedure1)
 *            initializeLater(..)}.
 * @param isPreIndexingPhase
 *            whether the method is called in a pre-indexing phase, i.e.
 *            when the global index is not yet fully updated. You must not
 *            rely on linking using the index if isPreIndexingPhase is
 *            <code>true</code>.
 */
protected void _infer(final ContentAssistFragmentTestLanguageRoot element, final IJvmDeclaredTypeAcceptor acceptor, final boolean isPreIndexingPhase) {
  final Procedure1<JvmGenericType> _function = (JvmGenericType it) -> {
    EList<JvmMember> _members = it.getMembers();
    final Procedure1<JvmOperation> _function_1 = (JvmOperation it_1) -> {
      this._jvmTypesBuilder.setBody(it_1, element.getExpression());
    };
    JvmOperation _method = this._jvmTypesBuilder.toMethod(element, "hello", this._typeReferenceBuilder.typeRef(Void.class), _function_1);
    this._jvmTypesBuilder.<JvmOperation>operator_add(_members, _method);
  };
  acceptor.<JvmGenericType>accept(this._jvmTypesBuilder.toClass(element, "my.test.MyClass"), _function);
}