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);
List classes = Env.vm().allClasses();
Iterator iter = classes.iterator();
while (iter.hasNext()) {
ReferenceType type = ((ReferenceType) iter.next());
if (type.name().endsWith(idToken)) {
cls = type;
break;
}
}
} else {
// It's a class name
List classes = Env.vm().classesByName(idToken);
if (classes.size() > 0) {
// TO DO: handle multiples
cls = (ReferenceType) classes.get(0);
}
}
return cls;
}
static synchronized String sourceLine(Location location, int lineNumber) throws IOException {
if (lineNumber == -1) {
throw new IllegalArgumentException();
}
try {
String fileName = location.sourceName();
Iterator iter = sourceCache.iterator();
SourceCode code = null;
while (iter.hasNext()) {
SourceCode candidate = (SourceCode) iter.next();
if (candidate.fileName().equals(fileName)) {
code = candidate;
iter.remove();
break;
}
}
if (code == null) {
BufferedReader reader = sourceReader(location);
if (reader == null) {
throw new FileNotFoundException(fileName);
}
code = new SourceCode(fileName, reader);
if (sourceCache.size() == SOURCE_CACHE_SIZE) {
sourceCache.remove(sourceCache.size() - 1);
}
}
sourceCache.add(0, code);
return code.sourceLine(lineNumber);
} catch (AbsentInformationException e) {
throw new IllegalArgumentException();
}
}