public synchronized String getJSValue(String expression) {
// Don't try to evaluate js code again if the binding has already been destroyed
if (!destroyed) {
// see if this is an expression or a statement block
// Match ; followed by 0 or even quotes
Pattern pattern = Pattern.compile(";(?=([^\"]*\"[^\"]*\")*[^\"]*$)");
Matcher matcher = pattern.matcher(expression);
if (matcher.find()) {
String lastStmt = expression.substring(matcher.end(matcher.groupCount() - 1));
String stmtBlock = expression.substring(0, matcher.end(matcher.groupCount() - 1));
expression = stmtBlock + " return " + lastStmt;
} else {
expression = " return " + expression;
}
String code =
"_TiReturn.setValue((function(){try{"
+ expression
+ "+\"\";}catch(ti_eval_err){return '';}})());";
Log.d(TAG, "getJSValue:" + code, Log.DEBUG_MODE);
returnSemaphore.drainPermits();
synchronized (codeSnippets) {
codeSnippets.push(code);
}
try {
if (!returnSemaphore.tryAcquire(3500, TimeUnit.MILLISECONDS)) {
synchronized (codeSnippets) {
codeSnippets.removeElement(code);
}
Log.w(TAG, "Timeout waiting to evaluate JS");
}
return returnValue;
} catch (InterruptedException e) {
Log.e(TAG, "Interrupted", e);
}
}
return null;
}
public synchronized void free(Connection connection) {
busyConnections.removeElement(connection);
availableConnections.addElement(connection);
// Wake up threads that are waiting for a connection
notifyAll();
}
