/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jjs.impl;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.javac.testing.impl.MockJavaResource;
import com.google.gwt.dev.jjs.ast.JField;
import com.google.gwt.dev.jjs.ast.JMethod;
import com.google.gwt.dev.jjs.ast.JNode;
import com.google.gwt.dev.jjs.ast.JPrimitiveType;
import com.google.gwt.dev.jjs.ast.JProgram;
import com.google.gwt.dev.jjs.impl.JsniRefLookup.ErrorReporter;
import com.google.gwt.dev.util.JsniRef;
/**
* Tests class {@link JsniRefLookup}.
*/
public class JsniRefLookupTest extends JJSTestBase {
private class MockErrorReporter implements ErrorReporter {
private String error = null;
public void assertHasError() {
assertTrue("Expected a lookup failure", error != null);
}
public void assertNoError() {
assertTrue("Unexpected error: " + error, error == null);
}
public void reportError(String error) {
this.error = error;
}
}
private JProgram program;
@Override
public void setUp() {
sourceOracle.addOrReplace(new MockJavaResource("test.Intf") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public interface Intf {\n");
code.append(" public int addTwoOverloaded(int x);\n");
code.append(" public int addOne(int x);\n");
code.append(" public int foo(int x);\n");
code.append(" public double foo(double x);\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.Foo") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public class Foo implements Intf {\n");
code.append(" public Foo() { }\n");
code.append(" public Foo(int x) { }\n");
code.append(" public static int intStatic;\n");
code.append(" public int intInstance;\n");
code.append(" public int addOne(int x) { return x+1; }\n");
code.append(" public int addTwoOverloaded(int x) { return x+2; }\n");
code.append(" public double addTwoOverloaded(double x) { return x+2; }\n");
code.append(" public int foo(int x) { return x+1; }\n");
code.append(" public double foo(double x) { return x+1; }\n");
code.append(" public int bar(int x) { return x+1; }\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.Bar") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public class Bar extends Foo {\n");
code.append(" public Bar() { }\n");
code.append(" public int foo(int x) { return x+1; }\n");
code.append(" public int bar(int x) { return x+1; }\n");
code.append(" public double bar(double x) { return x+1; }\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.GenericClass") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public abstract class GenericClass<T> {\n");
code.append(" abstract void set(T x);\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.ClassWithBridge") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("class ClassWithBridge extends GenericClass<String> {\n");
code.append(" void set(String x) { }\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.PrivateSup") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public class PrivateSup {\n");
code.append(" private static int field;\n");
code.append(" private static int method() { return 0; }\n");
code.append(" private static int fieldSup;\n");
code.append(" private static int methodSuP() { return 0; }\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.PrivateSub") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public class PrivateSub extends PrivateSup {\n");
code.append(" private static float field;\n");
code.append(" private static float method() { return 0; }\n");
code.append(" private static float methodSub() { return 0; }\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.DiffRetSuper") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public interface DiffRetSuper {\n");
code.append(" Object foo();\n");
code.append("}\n");
return code;
}
});
sourceOracle.addOrReplace(new MockJavaResource("test.DiffRetSub") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("public interface DiffRetSub extends DiffRetSuper {\n");
code.append(" String foo();\n");
code.append("}\n");
return code;
}
});
addSnippetImport("test.DiffRetSub");
try {
// The snippet must reference the classes so they will be compiled in
program = compileSnippet("void",
"new test.Foo(); new test.Bar(); new ClassWithBridge(); new PrivateSub();");
} catch (UnableToCompleteException e) {
throw new RuntimeException(e);
}
}
public void testBasicLookups() {
{
MockErrorReporter errors = new MockErrorReporter();
JField res = (JField) lookup("test.Foo::intStatic", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("intStatic", res.getName());
assertTrue(res.isStatic());
}
{
MockErrorReporter errors = new MockErrorReporter();
JField res = (JField) lookup("test.Foo::intInstance", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("intInstance", res.getName());
assertFalse(res.isStatic());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::addOne(I)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::addTwoOverloaded(I)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
assertEquals(JPrimitiveType.INT, res.getParams().get(0).getType());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::addTwoOverloaded(D)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
assertEquals(JPrimitiveType.DOUBLE, res.getParams().get(0).getType());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::new()", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("Foo", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::bogoField", errors);
errors.assertHasError();
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::bogoMethod()", errors);
errors.assertHasError();
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::new(J)", errors);
errors.assertHasError();
}
}
public void testBridgeMethods() {
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup(
"test.ClassWithBridge::set(Ljava/lang/String;)", errors);
errors.assertNoError();
assertEquals("test.ClassWithBridge", res.getEnclosingType().getName());
assertEquals("set", res.getName());
assertEquals("java.lang.String",
res.getParams().get(0).getType().getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.ClassWithBridge::set(*)", errors);
errors.assertNoError();
assertEquals("test.ClassWithBridge", res.getEnclosingType().getName());
assertEquals("set", res.getName());
assertEquals("java.lang.String",
res.getParams().get(0).getType().getName());
}
{
// For backward compatibility, allow calling a bridge method directly
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup(
"test.ClassWithBridge::set(Ljava/lang/Object;)", errors);
errors.assertNoError();
assertEquals("test.ClassWithBridge", res.getEnclosingType().getName());
assertEquals("set", res.getName());
assertEquals("java.lang.Object",
res.getParams().get(0).getType().getName());
}
}
public void testConstructors() {
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::new()", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("Foo", res.getName());
assertEquals(0, res.getParams().size());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::new(I)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("Foo", res.getName());
assertEquals(1, res.getParams().size());
assertSame(JPrimitiveType.INT, res.getParams().get(0).getType());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::new(*)", errors);
errors.assertHasError();
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::new()", errors);
errors.assertNoError();
assertEquals("test.Bar", res.getEnclosingType().getName());
assertEquals("Bar", res.getName());
assertEquals(0, res.getParams().size());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::new(*)", errors);
errors.assertNoError();
assertEquals("test.Bar", res.getEnclosingType().getName());
assertEquals("Bar", res.getName());
assertEquals(0, res.getParams().size());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Bar::new(I)", errors);
errors.assertHasError();
}
}
public void testInheritance() {
// test lookups of methods where the subtype is specified
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::addOne(I)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::addTwoOverloaded(I)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
assertEquals(JPrimitiveType.INT, res.getParams().get(0).getType());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::addTwoOverloaded(D)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
assertEquals(JPrimitiveType.DOUBLE, res.getParams().get(0).getType());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::addOne(*)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Bar::addTwoOverloaded(*)", errors);
errors.assertHasError();
}
/*
* test wildcard lookups when the subtype overloads but the supertype does
* not, and vice versa
*/
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::foo(I)", errors);
errors.assertNoError();
assertEquals("test.Bar", res.getEnclosingType().getName());
assertEquals("foo", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::bar(I)", errors);
errors.assertNoError();
assertEquals("test.Bar", res.getEnclosingType().getName());
assertEquals("bar", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Bar::bar(D)", errors);
errors.assertNoError();
assertEquals("test.Bar", res.getEnclosingType().getName());
assertEquals("bar", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Bar::foo(*)", errors);
errors.assertHasError();
}
/*
* Test a lookup where the subtype has a narrower return type than the
* supertype.
*/
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.DiffRetSub::foo()", errors);
errors.assertNoError();
assertEquals("test.DiffRetSub", res.getEnclosingType().getName());
assertEquals("foo", res.getName());
}
}
public void testInterfaces() {
// Test lookups in the interface that specify the types
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::addTwoOverloaded(I)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::addOne(I)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::foo(I)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("foo", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::foo(D)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("foo", res.getName());
}
// Test lookups that use wildcards
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::addTwoOverloaded(*)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("addTwoOverloaded", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Intf::addOne(*)", errors);
errors.assertNoError();
assertEquals("test.Intf", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Intf::foo(*)", errors);
errors.assertHasError();
}
}
public void testPrivate() {
// test private entries in the requested class
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.PrivateSub::method()", errors);
errors.assertNoError();
assertEquals("test.PrivateSub", res.getEnclosingType().getName());
assertEquals("method", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
JField res = (JField) lookup("test.PrivateSub::field", errors);
errors.assertNoError();
assertEquals("test.PrivateSub", res.getEnclosingType().getName());
assertEquals("field", res.getName());
}
// test private entries in the superclass
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.PrivateSub::methodSup()", errors);
errors.assertHasError();
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.PrivateSub::fieldSup", errors);
errors.assertHasError();
}
}
public void testWildcardLookups() {
{
MockErrorReporter errors = new MockErrorReporter();
JMethod res = (JMethod) lookup("test.Foo::addOne(*)", errors);
errors.assertNoError();
assertEquals("test.Foo", res.getEnclosingType().getName());
assertEquals("addOne", res.getName());
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::addTwoOverloaded(*)", errors);
errors.assertHasError();
}
{
MockErrorReporter errors = new MockErrorReporter();
lookup("test.Foo::bogoMethod(*)", errors);
errors.assertHasError();
}
}
private JNode lookup(String refString, MockErrorReporter errors) {
return JsniRefLookup.findJsniRefTarget(JsniRef.parse(refString), program,
errors);
}
}