public void eventHandler(
ThreadContext context, String event, String file, int line, String name, IRubyObject type) {
// Line numbers are 1s based. Arrays are zero based. We need to compensate for that.
line -= 1;
// Make sure that we have SCRIPT_LINES__ and it's a hash
RubyHash scriptLines = getScriptLines(context.getRuntime());
if (scriptLines == null || !scriptLines.containsKey(file)) {
return;
}
// make sure the file's source lines are in SCRIPT_LINES__
cover = getCover(context.getRuntime());
RubyArray lines = (RubyArray) scriptLines.get(file);
if (lines == null || cover == null) {
return;
}
// make sure file's counts are in COVER and set to zero
RubyArray counts = (RubyArray) cover.get(file);
if (counts == null) {
counts = context.getRuntime().newArray();
for (int i = 0; i < lines.size(); i++) {
counts.add(Long.valueOf(0));
}
cover.put(file, counts);
}
// in the case of code generation (one example is instance_eval for routes optimization)
// We could get here and see that we are not matched up with what we expect
if (counts.size() <= line) {
for (int i = counts.size(); i <= line; i++) {
counts.add(Long.valueOf(0));
}
}
if (!context.isWithinTrace()) {
try {
context.setWithinTrace(true);
// update counts in COVER
Long count = (Long) counts.get(line);
if (count == null) {
count = Long.valueOf(0);
}
count = Long.valueOf(count.longValue() + 1);
counts.set(line, count);
} finally {
context.setWithinTrace(false);
}
}
}
