static ReferenceType getReferenceTypeFromToken(String idToken) {
ReferenceType cls = null;
if (Character.isDigit(idToken.charAt(0))) {
cls = null;
} else if (idToken.startsWith("*.")) {
// This notation saves typing by letting the user omit leading
// package names. The first
// loaded class whose name matches this limited regular
// expression is selected.
idToken = idToken.substring(1);
for (ReferenceType type : Env.vm().allClasses()) {
if (type.name().endsWith(idToken)) {
cls = type;
break;
}
}
} else {
// It's a class name
List<ReferenceType> classes = Env.vm().classesByName(idToken);
if (classes.size() > 0) {
// TO DO: handle multiples
cls = classes.get(0);
}
}
return cls;
}
/**
* False iff there is some evidence that no class described by this pattern exists in the
* classpath. Conservatively returns true for patterns containing "*", for cases where the virtual
* machine is not a PathSearchingVirtualMachine, and for anonymous classes for a parent class
* exists.
*/
boolean classIsPlausible() {
if (classId.startsWith("*")
|| classId.endsWith("*")
|| !(Env.vm() instanceof PathSearchingVirtualMachine)) return true;
else return Env.classMayExist(transClassId);
}