/**
* Returns a class which has a static method with the same name as 'method', whose body creates an
* new instance of 'specimen', casts it to 'iface' (including the type parameters) and invokes
* 'method' upon it via an invokeinterface instruction with 'args' as function call parameters.
*/
private Class invokeInterfaceHarness(
Class specimen, Extends iface, AbstractMethod method, String... args) {
Interface istub =
new Interface(
iface.getType().getName(),
iface.getType().getAccessFlags(),
iface.getType().getParameters(),
null,
Arrays.asList((Method) method));
Class cstub = new Class(specimen.getName());
String params = toJoinedString(args, ", ");
ConcreteMethod sm =
new ConcreteMethod(
"int",
SourceModel.stdMethodName,
String.format(
"return ((%s)(new %s())).%s(%s);",
iface.toString(), specimen.getName(), method.getName(), params),
new AccessFlag("public"),
new AccessFlag("static"));
sm.suppressWarnings();
Class ii = new Class("II_" + specimen.getName() + "_" + iface.getType().getName(), sm);
ii.addCompilationDependency(istub);
ii.addCompilationDependency(cstub);
ii.addCompilationDependency(method);
return ii;
}
/**
* Returns a class which has a static method with the same name as 'method', whose body creates an
* new instance of 'specimen' and invokes 'method' upon it via an invokevirtual instruction with
* 'args' as function call parameters.
*
* <p>'returns' is a dummy return value that need only match 'methods' return type (it is only
* used in the dummy class when compiling IV).
*/
private Class invokeVirtualHarness(
Class specimen, ConcreteMethod method, String returns, String... args) {
Method cm =
new ConcreteMethod(
method.getReturnType(),
method.getName(),
"return " + returns + ";",
method.getElements());
Class stub = new Class(specimen.getName(), cm);
String params = toJoinedString(args, ", ");
ConcreteMethod sm =
new ConcreteMethod(
method.getReturnType(),
method.getName(),
String.format(
"return (new %s()).%s(%s);", specimen.getName(), method.getName(), params),
new AccessFlag("public"),
new AccessFlag("static"));
Class iv = new Class("IV_" + specimen.getName(), sm);
iv.addCompilationDependency(stub);
iv.addCompilationDependency(cm);
return iv;
}