public void testMethodInInner2() throws Exception {
CtClass inner = sloader.get("test2.Nested3$Inner");
CtClass outer = sloader.get("test2.Nested3");
String src =
"public int f() {"
+ " int k = 0;"
+ " test2.Nested3 n = new test2.Nested3(3);"
+ " k += n.geti();"
+ " n = new test2.Nested3();"
+ " k += n.geti();"
+ " n = new test2.Nested3(\"foo\");"
+ " k += n.geti();"
+ " return k; }";
outer.stopPruning(true);
outer.writeFile();
try {
CtMethod m = CtNewMethod.make(src, inner);
fail();
} catch (RuntimeException e) {
}
outer.defrost();
CtMethod m = CtNewMethod.make(src, inner);
inner.addMethod(m);
inner.writeFile();
outer.writeFile();
Object iobj = make(inner.getName());
assertEquals(6, invoke(iobj, "f"));
}
public void testCodeGen() throws Exception {
CtClass cc = sloader.get("test2.CodeGen");
CtMethod m1 = cc.getDeclaredMethod("run");
m1.insertBefore(
"{ double d = true ? 1 : 0.1; "
+ " d = d > 0.5 ? 0.0 : - 1.0; "
+ " System.out.println(d); "
+ " String s = \"foo\"; "
+ " s = 1 + 2 + s + \"bar\"; "
+ " s += \"poi\" + 3 + seven() + seven(\":\" + ' '); "
+ " s += .14; "
+ " msg = s; "
+ " System.out.println(s); }");
// recursive type check is done if $proceed is used.
CtMethod m2 =
CtNewMethod.make(
"public int test() {"
+ " String s = $proceed(\"int\" + (3 + 0.14)) + '.'; "
+ " System.out.println(s); return s.length(); }",
cc,
"this",
"seven");
cc.addMethod(m2);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(19, invoke(obj, "run"));
assertEquals(9, invoke(obj, "test"));
}
public void testInsertLocal() throws Exception {
CtClass cc = sloader.get("test2.InsertLocal");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.insertBefore("{ i = s.length(); d = 0.14; }");
m1.insertAfter("{ field = i; }");
CtMethod m2 = cc.getDeclaredMethod("run2");
m2.insertAt(22, "{ s = \"12\"; k = 5; }");
CtMethod m3 = cc.getDeclaredMethod("run3");
m3.instrument(
new ExprEditor() {
public void edit(NewExpr n) throws CannotCompileException {
n.replace("{ i++; $_ = $proceed($$); }");
}
public void edit(FieldAccess f) throws CannotCompileException {
f.replace("{ i++; $_ = $proceed($$); }");
}
public void edit(MethodCall m) throws CannotCompileException {
m.replace("{ i++; $_ = $proceed($$); }");
}
});
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(317, invoke(obj, "run"));
assertEquals(7, invoke(obj, "run2"));
assertEquals(3, invoke(obj, "run3"));
}
public void testArrayLen() throws Exception {
CtClass cc = sloader.get("test2.ArrayLenTest");
cc.addMethod(CtNewMethod.make("public int foo(){ return this.length; }", cc));
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(1, invoke(obj, "foo"));
}
public void testNewArray() throws Exception {
ExprEditor ed =
new ExprEditor() {
int dim[] = {1, 2, 2, 1, 2, 2, 3};
int cdim[] = {1, 1, 2, 1, 1, 2, 2};
int counter = 0;
public void edit(NewArray expr) throws CannotCompileException {
try {
CtClass str = sloader.get("java.lang.String");
if (counter < 3) assertEquals(str, expr.getComponentType());
else assertEquals(CtClass.intType, expr.getComponentType());
assertEquals(dim[counter], expr.getDimension());
assertEquals(cdim[counter], expr.getCreatedDimensions());
expr.replace("{ i += $1; $_ = $proceed($$); }");
++counter;
} catch (NotFoundException e) {
throw new CannotCompileException(e);
}
}
};
CtClass cc = sloader.get("test2.NewArray");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.instrument(ed);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(48, invoke(obj, "run"));
}
public void testCodeGen2() throws Exception {
CtClass cc = sloader.makeClass("test2.CodeGen2");
CtMethod m1 =
CtNewMethod.make(
"public int test() {"
+ " int len;"
+ " String s = \"foo\" + \"bar\" + 3;"
+ " System.out.println(s); len = s.length();"
+ " len = -3 + len; len = len - (7 - 2 + -1);"
+ " int k = 3; len += ~k - ~3;"
+ " return len; }",
cc);
cc.addMethod(m1);
CtMethod m2 =
CtNewMethod.make(
"public int test2() {"
+ " double d = 0.2 - -0.1;"
+ " d += (0.2 + 0.3) * 1.0;"
+ " return (int)(d * 10); }",
cc);
cc.addMethod(m2);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(0, invoke(obj, "test"));
assertEquals(8, invoke(obj, "test2"));
}
public void testAddCatchForConstructor() throws Exception {
CtClass cc = sloader.get("test2.AddCatchForConstructor");
CtConstructor m1 = cc.getDeclaredConstructors()[0];
m1.addCatch("return;", sloader.get("java.lang.Exception"));
cc.writeFile();
Object obj = make(cc.getName());
}
public void testReplaceClassName() throws Exception {
String oldName = "test2.ReplaceClassName2";
String newName = "test2.ReplaceClassName3";
CtClass cc = sloader.get("test2.ReplaceClassName");
cc.replaceClassName(oldName, newName);
cc.writeFile();
CtClass cc2 = dloader.get(cc.getName());
CtMethod m = cc2.getDeclaredMethod("foo");
assertEquals(newName, m.getParameterTypes()[0].getName());
}
public void testArrayLength() throws Exception {
CtClass cc = sloader.makeClass("test2.ArrayLength");
CtMethod m2 =
CtNewMethod.make(
"public int f() { String[] s = new String[3]; " + "return s.length; }", cc);
cc.addMethod(m2);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(3, invoke(obj, "f"));
}
public void testLocalVar() throws Exception {
CtClass cc = sloader.get("test2.LocalVar");
CtMethod m = cc.getDeclaredMethod("toString");
m.addLocalVariable("var", CtClass.booleanType);
m.insertBefore("{var = true; }");
m.insertAfter("{if (var) hashCode(); }", false);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(3, invoke(obj, "foo"));
}
public void testAddLocalVar() throws Exception {
CtClass cc = sloader.get("test2.AddLocalVar");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.addLocalVariable("i", CtClass.intType);
m1.insertBefore("i = 3;");
m1.insertAfter("$_ = i + 1;");
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(4, invoke(obj, "foo"));
}
public void testConstBody() throws Exception {
CtClass cc = sloader.get("test2.ConstBody");
CtConstructor cons =
new CtConstructor(
new CtClass[] {sloader.get("java.lang.String"), sloader.get("java.lang.Integer")}, cc);
cons.setBody("super((String)$1, (Integer)$2);");
cc.addConstructor(cons);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(1, invoke(obj, "bar"));
}
public void testSetExceptions() throws Exception {
CtClass cc = sloader.get("test2.SetExceptions");
CtMethod m = cc.getDeclaredMethod("f");
CtClass ex = m.getExceptionTypes()[0];
assertEquals("java.lang.Exception", ex.getName());
m.setExceptionTypes(null);
assertEquals(0, m.getExceptionTypes().length);
m.setExceptionTypes(new CtClass[0]);
assertEquals(0, m.getExceptionTypes().length);
m.setExceptionTypes(new CtClass[] {ex});
assertEquals(ex, m.getExceptionTypes()[0]);
}
public void testMethodInInner() throws Exception {
CtClass inner = sloader.get("test2.Nested2$Inner");
CtClass outer = sloader.get("test2.Nested2");
String src = "public int f(test2.Nested2 n) {" + " n.i = 1; n.i++; n.i += 2; return n.i; }";
outer.writeFile();
try {
CtMethod m = CtNewMethod.make(src, inner);
fail();
} catch (RuntimeException e) {
}
outer.defrost();
CtMethod m = CtNewMethod.make(src, inner);
inner.addMethod(m);
src =
"public int g(test2.Nested2 n) {"
+ " n.d = 1.0; n.d++; n.d += 2.0;"
+ " return n.d == 4.0 ? 7 : 8; }";
m = CtNewMethod.make(src, inner);
inner.addMethod(m);
src =
"public int h(test2.Nested2 n) {"
+ " n.s = \"poi\";"
+ "return n.s.length() + f(n) + g(n); }";
m = CtNewMethod.make(src, inner);
inner.addMethod(m);
inner.writeFile();
outer.writeFile();
Object nobj = make(outer.getName());
Object iobj = make(inner.getName());
Method mth = iobj.getClass().getMethod("h", new Class[] {nobj.getClass()});
Object resobj = mth.invoke(iobj, new Object[] {nobj});
int res = ((Integer) resobj).intValue();
assertEquals(14, res);
}
public void testRemoveCall() throws Exception {
CtClass cc = sloader.get("test2.RemoveCall");
CtMethod m1 = cc.getDeclaredMethod("bar");
m1.instrument(
new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
m.replace("{ $_ = ($r)null; }");
}
});
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(0, invoke(obj, "bar"));
}
public void testSuperCall() throws Exception {
CtClass cc = sloader.get("test2.SuperCall");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.instrument(
new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
m.replace("{ $_ = $proceed($$); }");
}
});
cc.writeFile();
Object obj = make(cc.getName());
invoke(obj, "bar");
}
public void testBrennan() throws Exception {
CtClass cc = sloader.get("test2.Brennan");
cc.addMethod(
CtNewMethod.make(
"public int foo(){"
+ " java.text.SimpleDateFormat df;"
+ " if((df = (java.text.SimpleDateFormat)format) == null)"
+ " df = new java.text.SimpleDateFormat(\"yyyyMMdd\");"
+ " return 1;}",
cc));
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(1, invoke(obj, "foo"));
}
public void testIncOp() throws Exception {
CtClass target = sloader.makeClass("test2.IncOp");
String src =
"public int sample() {"
+ " int ia[] = new int[50];"
+ " ia[0] = 1;"
+ " int v = ++(ia[0]);"
+ " return v; }";
CtMethod newmethod = CtNewMethod.make(src, target);
target.addMethod(newmethod);
target.writeFile();
Object obj = make(target.getName());
assertEquals(2, invoke(obj, "sample"));
}
public void testDeclaringClass() throws Exception {
try {
CtClass cc = sloader.get("test2.NotExistingClass");
} catch (NotFoundException e) {
System.out.println(e);
}
CtClass inner = sloader.get("test2.Nested$Inner");
CtClass outer = sloader.get("test2.Nested");
assertEquals(outer, inner.getDeclaringClass());
assertEquals(null, outer.getDeclaringClass());
assertEquals(null, CtClass.intType.getDeclaringClass());
CtClass inner3 = sloader.get("test2.Nested$Inner3");
outer.writeFile();
try {
CtMethod m = CtNewMethod.make("public void f(test2.Nested n) { return n.geti(); }", inner3);
fail();
} catch (RuntimeException e) {
}
outer.defrost();
CtMethod m =
CtNewMethod.make(
"public int f(test2.Nested n) { "
+ "return n.geti() + test2.Nested.getj(1) + f() + g(); } ",
inner3);
inner3.addMethod(m);
inner3.writeFile();
outer.writeFile();
Object nobj = make(outer.getName());
Object iobj = make(inner3.getName());
Method mth = iobj.getClass().getMethod("f", new Class[] {nobj.getClass()});
Object resobj = mth.invoke(iobj, new Object[] {nobj});
int res = ((Integer) resobj).intValue();
assertEquals(6, res);
}
public void testNewExprInTry() throws Exception {
ExprEditor ed =
new ExprEditor() {
public void edit(NewExpr expr) throws CannotCompileException {
expr.replace("$_ = new test2.HashMapWrapper($1, 1);");
}
};
CtClass cc = sloader.get("test2.NewExprInTry");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.instrument(ed);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(1, invoke(obj, "run"));
}
public void testImportPackage() throws Exception {
CtClass cc2 = sloader.makeClass("test2.Imported");
cc2.writeFile();
CtClass cc = sloader.makeClass("test2.Importer");
sloader.importPackage("test2");
cc.addMethod(
CtNewMethod.make(
"public int foo(){ "
+ " Imported obj = new Imported();"
+ " return obj.getClass().getName().length(); }",
cc));
sloader.clearImportedPackages();
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(14, invoke(obj, "foo"));
}
private void testDotClass4(String cname, boolean java5) throws Exception {
CtClass cc = sloader.makeClass(cname);
if (java5) cc.getClassFile2().setVersionToJava5();
CtMethod m =
CtNewMethod.make(
"public int test() {"
+ " String s = Object.class.getName()"
+ " + Object[].class.getName();"
+ " return s.length(); }",
cc);
cc.addMethod(m);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(35, invoke(obj, "test"));
}
public void testStaticFinal() throws Exception {
CtClass cc = sloader.makeClass("test2.StaticFinal");
CtField f = new CtField(CtClass.intType, "sff1", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "5");
assertEquals(new Integer(5), f.getConstantValue());
f = new CtField(CtClass.longType, "sff2", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "6");
assertEquals(new Long(6), f.getConstantValue());
f = new CtField(CtClass.floatType, "sff3", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "7");
assertEquals(new Float(7.0F), f.getConstantValue());
f = new CtField(CtClass.floatType, "sff4", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "8.0");
assertEquals(new Float(8.0F), f.getConstantValue());
f = new CtField(CtClass.doubleType, "sff5", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "9");
assertEquals(new Double(9.0), f.getConstantValue());
f = new CtField(CtClass.doubleType, "sff6", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "10.0");
assertEquals(new Double(10.0), f.getConstantValue());
f = new CtField(sloader.get("java.lang.String"), "sff7", cc);
f.setModifiers(Modifier.STATIC | Modifier.FINAL);
cc.addField(f, "\"test\"");
assertEquals("test", f.getConstantValue());
f = new CtField(sloader.get("java.lang.String"), "sff8", cc);
f.setModifiers(Modifier.STATIC);
cc.addField(f, "\"static\"");
assertEquals(null, f.getConstantValue());
cc.addMethod(CtNewMethod.make("public int foo(){ return sff1 + sff7.length(); }", cc));
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(9, invoke(obj, "foo"));
}
public void testMakeStaticMethod() throws Exception {
CtClass cc = sloader.makeClass("test2.MakeStaticMethod");
CtMethod m =
CtNewMethod.make(
Modifier.PUBLIC | Modifier.STATIC,
CtClass.intType,
"create",
new CtClass[] {CtClass.intType},
null,
"{ return $1; }",
cc);
cc.addMethod(m);
cc.addMethod(CtNewMethod.make("public int test() { return create(13); }", cc));
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(13, invoke(obj, "test"));
}
private void testDotClass2(String cname, boolean java5) throws Exception {
CtClass cc = sloader.makeClass(cname);
CtClass cc3 = sloader.makeClass("test2.DotClass3");
if (java5) cc.getClassFile2().setVersionToJava5();
CtMethod m =
CtNewMethod.make(
"public int test() {" + " return test2.DotClass3.class.getName().length(); }", cc);
cc.addMethod(m);
cc.writeFile();
// don't execute cc3.writeFile();
Object obj = make(cc.getName());
try {
assertEquals(15, invoke(obj, "test"));
} catch (java.lang.reflect.InvocationTargetException e) {
Throwable t = e.getCause();
assertTrue(t instanceof java.lang.NoClassDefFoundError);
}
}
public void testRemove() throws Exception {
CtClass cc = sloader.get("test2.Remove");
testRemove2(cc, "f1");
testRemove2(cc, "f6");
testRemove2(cc, "f3");
CtField p = cc.getField("p");
try {
cc.removeField(p);
fail("non-existing field has been removed");
} catch (NotFoundException e) {
}
testRemove3(cc, "bar");
testRemove3(cc, "bar2");
testRemove4(cc, "(I)V");
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(7, invoke(obj, "foo"));
}
public void testNewExprTry() throws Exception {
ExprEditor ed =
new ExprEditor() {
public void edit(NewExpr expr) throws CannotCompileException {
StringBuffer code = new StringBuffer(300);
code.append("{ try ");
code.append("{ $_ = $proceed($$); }");
code.append("catch (OutOfMemoryError e) {}}");
expr.replace(code.toString());
}
};
CtClass cc = sloader.get("test2.NewExprTry");
CtMethod m1 = cc.getDeclaredMethod("foo");
m1.instrument(ed);
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(16, invoke(obj, "run"));
}
public void testSetSuper() throws Exception {
CtClass cc = sloader.makeClass("test2.SetSuper");
CtClass cc2 = sloader.makeClass("test2.SetSuperParent");
CtClass intf = sloader.makeInterface("test2.SetSuperIntf");
CtClass remote = sloader.get("java.rmi.Remote");
cc.setSuperclass(cc2);
cc.setInterfaces(new CtClass[] {intf});
intf.setSuperclass(remote);
intf.writeFile();
cc2.writeFile();
cc.writeFile();
assertEquals(cc2, cc.getSuperclass());
assertEquals(intf, cc.getInterfaces()[0]);
assertEquals(sloader.get("java.lang.Object"), intf.getSuperclass());
assertEquals(remote, intf.getInterfaces()[0]);
make(cc.getName());
}
public void testStaticMember2() throws Exception {
CtClass cc = sloader.get("test2.StaticMember2");
cc.addMethod(
CtNewMethod.make(
"public int run() {"
+ " return test2.StaticMember2.k + test2.StaticMember2.seven()"
+ " + (test2.StaticMember2.f + f)"
+ " + test2.StaticMember2.f + f; }",
cc));
cc.addMethod(
CtNewMethod.make(
"public int run1() {"
+ " long j = 1L;"
+ " return (int)(j + (test2.StaticMember2.fj + fj)"
+ " + test2.StaticMember2.fj + fj); }",
cc));
cc.addMethod(
CtNewMethod.make(
"public int run2() {"
+ " double x = 1.0;"
+ " double d = x + test2.StaticMember2.fd + fd"
+ " + (test2.StaticMember2.fd + fd);"
+ " return (int)(d * 10); }",
cc));
cc.addMethod(
CtNewMethod.make(
"public int run3() {" + " return (test2.StaticMember2.fb & fb) ? 1 : 0; }", cc));
cc.writeFile();
Object obj = make(cc.getName());
assertEquals(54, invoke(obj, "run"));
assertEquals(53, invoke(obj, "run1"));
assertEquals(958, invoke(obj, "run2"));
assertEquals(0, invoke(obj, "run3"));
}
public void testMakeNestedClass() throws Exception {
CtClass outer = sloader.get("test2.Nested4");
try {
CtClass inner = outer.makeNestedClass("Inner", false);
fail();
} catch (RuntimeException e) {
print(e.getMessage());
}
CtClass nested = outer.makeNestedClass("Inner", true);
outer.stopPruning(true);
outer.writeFile();
outer.defrost();
String src = "public int f() { return test2.Nested4.value; }";
CtMethod m = CtNewMethod.make(src, nested);
nested.addMethod(m);
nested.writeFile();
outer.writeFile();
Object iobj = make(nested.getName());
assertEquals(6, invoke(iobj, "f"));
}