bool CmdWhere::onClient(DebuggerClient *client) {
if (DebuggerCommand::onClient(client)) return true;
if (client->argCount() > 1) {
return help(client);
}
Array st = fetchStackTrace(client);
if (st.empty()) {
client->info("(no stacktrace to display or in global scope)");
client->info("if you hit serialization limit, consider do "
"\"set sa off\" and then get the stack without args");
return true;
}
// so list command can default to current frame
client->moveToFrame(client->getFrame(), false);
if (client->argCount() == 0) {
int i = 0;
for (ArrayIter iter(st); iter; ++iter) {
client->printFrame(i, iter.second());
++i;
if (!client->isApiMode() &&
i % DebuggerClient::ScrollBlockSize == 0 &&
client->ask("There are %d more frames. Continue? [Y/n]",
st.size() - i) == 'n') {
break;
}
}
} else {
string snum = client->argValue(1);
int num = atoi(snum.c_str());
if (snum[0] == '-') {
snum = snum.substr(1);
}
if (!DebuggerClient::IsValidNumber(snum)) {
client->error("The argument, if specified, has to be numeric.");
return true;
}
if (num > 0) {
for (int i = 0; i < num && i < st.size(); i++) {
client->printFrame(i, st[i]);
}
} else if (num < 0) {
for (int i = st.size() + num; i < st.size(); i++) {
client->printFrame(i, st[i]);
}
} else {
client->error("0 was specified for the number of frames");
client->tutorial(
"The optional argument is the number of frames to print out. "
"Use a positive number to print out innermost frames. Use a negative "
"number to print out outermost frames."
);
}
}
return true;
}
void CmdWhere::onClient(DebuggerClient &client) {
if (DebuggerCommand::displayedHelp(client)) return;
if (client.argCount() > 2) {
help(client);
return;
}
int argBase = 1;
if ((client.argCount() > 0) && client.arg(argBase, "async")) {
// We use a different command type for an async stack trace, so we
// can both send and receive different data and still keep the
// existing Where command unchanged. This ensures that old clients
// can still get a stack trace from a newer server, and vice
// versa.
m_type = KindOfWhereAsync;
argBase++;
client.info("Fetching async stacktrace...");
}
Array st = fetchStackTrace(client);
if (st.empty()) {
if (m_type != KindOfWhereAsync) {
client.info("(no stacktrace to display or in global scope)");
client.info("If you hit the serialization limit, try "
"\"set sa off\" to get the stack without args");
} else {
client.info("(no async stacktrace to display)");
}
return;
}
// so list command can default to current frame
client.moveToFrame(client.getFrame(), false);
if (client.argCount() < argBase) {
int i = 0;
for (ArrayIter iter(st); iter; ++iter) {
client.printFrame(i, iter.second().toArray());
++i;
if (i % DebuggerClient::ScrollBlockSize == 0 &&
client.ask("There are %zd more frames. Continue? [Y/n]",
st.size() - i) == 'n') {
break;
}
}
} else {
std::string snum = client.argValue(argBase);
int num = atoi(snum.c_str());
if (snum[0] == '-') {
snum = snum.substr(1);
}
if (!DebuggerClient::IsValidNumber(snum)) {
client.error("The argument, if specified, has to be numeric.");
return;
}
if (num > 0) {
for (int i = 0; i < num && i < st.size(); i++) {
client.printFrame(i, st[i].toArray());
}
} else if (num < 0) {
for (int i = st.size() + num; i < st.size(); i++) {
client.printFrame(i, st[i].toArray());
}
} else {
client.error("0 was specified for the number of frames");
client.tutorial(
"The optional argument is the number of frames to print out. "
"Use a positive number to print out innermost frames. Use a negative "
"number to print out outermost frames."
);
}
}
}
