/*
* Copyright 2010 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.GeneratedUnit;
import com.google.gwt.dev.javac.JdtCompiler.AdditionalTypeProviderDelegate;
import com.google.gwt.dev.javac.testing.impl.MockJavaResource;
import com.google.gwt.dev.jjs.ast.JDeclaredType;
import com.google.gwt.dev.jjs.ast.JMethod;
import com.google.gwt.dev.jjs.ast.JProgram;
/**
* Tests that a AdditionalTypeProviderDelegate correctly gets control when an unknown
* class is found, and that source for an unknown class gets correctly parsed.
*/
public class AdditionalTypeProviderDelegateTest extends OptimizerTestBase {
/**
* Compilation unit for a class generated at runtime when an unknown
* reference appears.
*/
private class JavaWrapperCompilationUnit implements GeneratedUnit {
private final long createTime = System.currentTimeMillis();
public String optionalFileLocation() {
// The named file location requires a non-Java extension,
// or else the file won't get compiled correctly.
return "myPackage/InsertedClass.notjava";
}
public String getStrongHash() {
return "InsertedClass";
}
public long creationTime() {
return createTime;
}
public String getSource() {
String classSource =
"package myPackage;\n" +
"public class InsertedClass {\n" +
" public static int getSmallNumber() {\n" +
" return 5;\n" +
" }\n" +
"}";
return classSource;
}
public String getTypeName() {
return "myPackage.InsertedClass";
}
public long getSourceToken() {
return -1;
}
}
public boolean insertInsertedClass = false;
public void setUp() {
// Create a source class that passes fine (just to test infrastructure.)
sourceOracle.addOrReplace(new MockJavaResource("test.A") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("class A {\n");
code.append(" void myFunc() {\n");
code.append(" }\n");
code.append("}\n");
return code;
}
});
// Create a source file containing a reference to a class in another
// package that we don't yet know about. That code will be inserted
// by the AdditionalTypeProviderDelegate.
sourceOracle.addOrReplace(new MockJavaResource("test.B") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("import myPackage.InsertedClass;");
code.append("class B {\n");
code.append(" int func() {\n");
// Reference an unknown class that will be substituted on the fly.
code.append(" return myPackage.InsertedClass.getSmallNumber();\n");
code.append(" }\n");
code.append("}\n");
return code;
}
});
// Create a source file containing a reference to a class in another
// package, but that lacks an import directive. Are we creating the
// class anyway?
sourceOracle.addOrReplace(new MockJavaResource("test.B1") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("class B1 {\n");
code.append(" int func() {\n");
// Reference an unknown class that will be substituted on the fly.
code.append(" return myPackage.InsertedClass.getSmallNumber();\n");
code.append(" }\n");
code.append("}\n");
return code;
}
});
}
public void testInsertedClass() throws UnableToCompleteException {
JProgram program = compileSnippet("void", "new test.B().func();");
// Make sure the compiled classes appeared.
JDeclaredType bType = findType(program, "test.B");
assertNotNull("Unknown type B", bType);
JDeclaredType insertedClassType = findType(program, "myPackage.InsertedClass");
assertNotNull("Unknown type InsertedClass", insertedClassType);
}
public void testInsertedClass2() throws UnableToCompleteException {
JProgram program = compileSnippet("void", "new test.B1().func();");
// Make sure the compiled classes appeared.
JDeclaredType bType = findType(program, "test.B1");
assertNotNull("Unknown type B1", bType);
JDeclaredType insertedClassType = findType(program, "myPackage.InsertedClass");
assertNotNull("Unknown type InsertedClass", insertedClassType);
}
// Make sure regular code not using the AdditionalTypeProviderDelegate still works.
public void testSimpleParse() throws UnableToCompleteException {
JProgram program = compileSnippet("void", "new test.A();");
JDeclaredType goodClassType = findType(program, "test.A");
assertNotNull("Unknown class A", goodClassType);
}
public void testUnknownClass() {
// Create a source file containing a reference to an unknown class.
sourceOracle.addOrReplace(new MockJavaResource("test.C") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("import myPackage.UnknownClass;");
code.append("class C {\n");
code.append(" int func() {\n");
// Reference an unknown class.
code.append(" return myPackage.UnknownClass.getSmallNumber();\n");
code.append(" }\n");
code.append("}\n");
return code;
}
});
try {
compileSnippet("void", "new test.C();");
fail("Shouldn't have compiled");
} catch (UnableToCompleteException expected) {
}
}
public void testUnknownClassNoImport() {
// Create a source file with a reference to an unknown class and no
// import statement.
sourceOracle.addOrReplace(new MockJavaResource("test.D") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package test;\n");
code.append("class D {\n");
code.append(" int func() {\n");
// Reference an unknown class.
code.append(" return myPackage.UnknownClass.getSmallNumber();\n");
code.append(" }\n");
code.append("}\n");
return code;
}
});
try {
compileSnippet("void", "new test.D();");
fail("Shouldn't have compiled");
} catch (UnableToCompleteException expected) {
}
}
@Override
protected AdditionalTypeProviderDelegate getAdditionalTypeProviderDelegate() {
// We'll provide a simple compiler delegate that will provide source
// for a class called myPackage.InsertedClass.
return new AdditionalTypeProviderDelegate() {
public boolean doFindAdditionalPackage(String slashedPackageName) {
if (slashedPackageName.compareTo("myPackage") == 0) {
return true;
}
return false;
}
public GeneratedUnit doFindAdditionalType(String binaryName) {
if (binaryName.compareTo("myPackage/InsertedClass") == 0) {
return new JavaWrapperCompilationUnit();
}
return null;
}
};
}
protected boolean optimizeMethod(JProgram program, JMethod method) {
return false;
}
}