Java Code Examples for org.eclipse.xtext.xbase.XVariableDeclaration#getRight()

/** Generate the given object.
 *
 * @param varDeclaration the variable declaration.
 * @param it the target for the generated content.
 * @param context the context.
 * @return the statement.
 */
protected XExpression _generate(XVariableDeclaration varDeclaration, IAppendable it, IExtraLanguageGeneratorContext context) {
	final String name = it.declareUniqueNameVariable(varDeclaration, varDeclaration.getName());
	it.append(name);
	it.append(" = "); //$NON-NLS-1$
	if (varDeclaration.getRight() != null) {
		generate(varDeclaration.getRight(), it, context);
	} else if (varDeclaration.getType() != null) {
		it.append(toDefaultValue(varDeclaration.getType()));
	} else {
		it.append("None"); //$NON-NLS-1$
	}
	if (context.getExpectedExpressionType() != null) {
		it.newLine();
		it.append("return ").append(name); //$NON-NLS-1$
	}
	return varDeclaration;
}
 

/** Only the simple name of the type is specified.
 * The JvmTypeReference is not a proxy.
 */
@Test
public void testReferenceToString_0() throws Exception {
	XtendFile file = file(
			  "package org.eclipse.xtend.core.tests.validation.uistrings\n"
			+ "public interface InterfaceA { }\n"
			+ "public class ClassB implements InterfaceA { }\n"
			+ "public class ClassC extends ClassB {\n"
			+ "}\n"
			+ "class XtendClass1 {\n"
			+ "  def test() {\n"
			+ "    val x = new List<ClassC>\n"
			+ "  }\n"
			+ "}\n");
	XtendClass clazz = (XtendClass) file.getXtendTypes().get(3);
	XBlockExpression block = (XBlockExpression) ((XtendFunction) clazz.getMembers().get(0)).getExpression();
	XVariableDeclaration declaration = (XVariableDeclaration) block.getExpressions().get(0);
	XConstructorCall cons = (XConstructorCall) declaration.getRight();
	JvmTypeReference reference = cons.getTypeArguments().get(0);
	assertNotNull(reference);
	assertNotNull(reference.getType());
	assertFalse(reference.getType().eIsProxy());
	assertNotNull(reference.eResource());
	assertEquals("ClassC", this.uiStrings.referenceToString(reference, "the-default-label"));
}
 

@Test public void testRecursiveClosure_02() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val (int)=>int fun = [ self.apply(it) ] }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XClosure closure = (XClosure) variable.getRight();
	XBlockExpression body = (XBlockExpression) closure.getExpression();
	XMemberFeatureCall member = (XMemberFeatureCall) body.getExpressions().get(0);
	XFeatureCall recursive = (XFeatureCall) member.getMemberCallTarget();
	assertEquals(Functions.Function1.class.getName(), recursive.getFeature().getQualifiedName('$'));
}
 

@Ignore("TODO eager binding of type arguments to expectation")
@Test public void testStaticFeatureCall_26() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<CharSequence> iterable = testdata.MethodOverrides4.staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides3.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test
public void testImplicitLambdaParameter() throws Exception {
	XBlockExpression block = (XBlockExpression) parseHelper.parse("{ val Comparable<String> c = [ length ] c.toString } ");
	BatchLinkableResource resource = (BatchLinkableResource) block.eResource();
	resource.resolveLazyCrossReferences(null);
	XVariableDeclaration assignment = (XVariableDeclaration) Iterables.getFirst(block.getExpressions(), null);
	XClosure lambda = (XClosure) assignment.getRight();
	JvmFormalParameter implicitParameter = Iterables.getFirst(lambda.getImplicitFormalParameters(), null);
	Assert.assertEquals("String", implicitParameter.getParameterType().getSimpleName());
	resource.update(0, 0, "");
	Assert.assertNull(implicitParameter.eResource());
}
 

/** Only the simple name of the type is specified.
 * The JvmTypeReference is proxy.
 */
@Test
public void testReferenceToString_1() throws Exception {
	XtendFile file1 = file(
			  "package org.eclipse.xtend.core.tests.validation.uistrings\n"
			+ "public interface InterfaceA { }\n"
			+ "public class ClassB implements InterfaceA { }\n"
			+ "public class ClassC extends ClassB {\n"
			+ "}\n");
	assertNotNull(file1);
	XtendFile file2 = file(
			  "package org.eclipse.xtend.core.tests.validation.uistrings\n"
			+ "class XtendClass1 {\n"
			+ "  def test() {\n"
			+ "    val x = new List<ClassC>\n"
			+ "  }\n"
			+ "}\n");
	XtendClass clazz = (XtendClass) file2.getXtendTypes().get(0);
	XBlockExpression block = (XBlockExpression) ((XtendFunction) clazz.getMembers().get(0)).getExpression();
	XVariableDeclaration declaration = (XVariableDeclaration) block.getExpressions().get(0);
	XConstructorCall cons = (XConstructorCall) declaration.getRight();
	JvmTypeReference reference = cons.getTypeArguments().get(0);
	assertNotNull(reference);
	assertNotNull(reference.getType());
	assertTrue(reference.getType().eIsProxy());
	assertNotNull(reference.eResource());
	assertEquals("ClassC", this.uiStrings.referenceToString(reference, "the-default-label"));
}
 

@Test public void testTypeParamInference_09() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ var this = new testdata.ClosureClient() var Integer i = invoke1([e|null],'foo') }");
	XVariableDeclaration var = (XVariableDeclaration) block.getExpressions().get(1);
	XFeatureCall fc = (XFeatureCall) var.getRight();
	final XExpression closure = fc.getFeatureCallArguments().get(0);
	assertExpected(Functions.class.getCanonicalName()+"$Function1<java.lang.String, java.lang.Integer>", closure);
}
 

@Test public void testTypeParamInference_04() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ var Integer i = new testdata.ClosureClient().invoke1([e|null],'foo') }");
	XVariableDeclaration var = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall fc = (XMemberFeatureCall) var.getRight();
	final XExpression closure = fc.getMemberCallArguments().get(0);
	assertExpected(Functions.class.getCanonicalName()+"$Function1<java.lang.String, java.lang.Integer>", closure);
}
 

protected Object _doEvaluate(XVariableDeclaration variableDecl, IEvaluationContext context, CancelIndicator indicator) {
	Object initialValue = null;
	if (variableDecl.getRight()!=null) {
		initialValue = internalEvaluate(variableDecl.getRight(), context, indicator);
	} else {
		if (services.getPrimitives().isPrimitive(variableDecl.getType())) {
			Primitive primitiveKind = services.getPrimitives().primitiveKind((JvmPrimitiveType) variableDecl.getType().getType());
			switch(primitiveKind) {
				case Boolean:
					initialValue = Boolean.FALSE; break;
				case Char:
					initialValue = Character.valueOf((char) 0); break;
				case Double:
					initialValue = Double.valueOf(0d); break;
				case Byte:
					initialValue = Byte.valueOf((byte) 0); break;
				case Float:
					initialValue = Float.valueOf(0f); break;
				case Int:
					initialValue = Integer.valueOf(0); break;
				case Long:
					initialValue = Long.valueOf(0L); break;
				case Short:
					initialValue = Short.valueOf((short) 0); break;
				case Void:
					throw new IllegalStateException("Void is not a valid variable type.");
				default:
					throw new IllegalStateException("Unknown primitive type " + primitiveKind);
			}
		}
	}
	context.newValue(QualifiedName.create(variableDecl.getName()), initialValue);
	return null;
}
 

@Test public void testConstructorCall_01() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ var java.util.List<String> list = new java.util.ArrayList() }");
	XVariableDeclaration variableDeclaration = (XVariableDeclaration) block.getExpressions().get(0);
	XConstructorCall constructorCall = (XConstructorCall) variableDeclaration.getRight();
	assertExpected("java.util.List<java.lang.String>", constructorCall);
}
 

@Test public void testStaticFeatureCall_30() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val boolean x = nested.NestedTypes.isInterface}");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("nested.NestedTypes.isInterface()", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_29() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val int x = nested.NestedTypes.array }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("nested.NestedTypes$array", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_07() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<java.io.Serializable> iterable = testdata::MethodOverrides4::staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_28() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<Object> iterable = testdata.MethodOverrides4.staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_09() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<Object> iterable = testdata::MethodOverrides4::staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_27() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<Object> iterable = testdata.MethodOverrides4.staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_16() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<java.io.Serializable> iterable = testdata.MethodOverrides4::staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_25() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<java.io.Serializable> iterable = testdata.MethodOverrides4.staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_18() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val Iterable<Object> iterable = testdata.MethodOverrides4::staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}
 

@Test public void testStaticFeatureCall_24() throws Exception {
	XBlockExpression block = (XBlockExpression) expression("{ val iterable = testdata.MethodOverrides4.staticM5(null) }");
	XVariableDeclaration variable = (XVariableDeclaration) block.getExpressions().get(0);
	XMemberFeatureCall featureCall = (XMemberFeatureCall) variable.getRight();
	assertEquals("testdata.MethodOverrides4.staticM5(T)", featureCall.getFeature().getIdentifier());
}