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Debugger: evaluate expression before assigning when using python dumper

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Fixes: QTCREATORBUG-23711
Change-Id: Ic386b3e4bdd948e74f52116248de1b33a35fe03a
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
This commit is contained in:
David Schulz
2020-04-23 10:00:23 +02:00
parent f057adcff2
commit f71286db98
2 changed files with 69 additions and 42 deletions
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100
src/libs/qtcreatorcdbext/qtcreatorcdbextension.cpp
View File

@@ -160,7 +160,7 @@ static const CommandDescription commandDescriptions[] = {
{"assign","Assigns a value to a variable in current symbol group.",
"[-t token] [-h] <iname=value>\n"
"-h Data are hex-encoded, binary data\n"
"-u Data are hex-encoded, UTF16 data"
"-e iname is an hex-encoded expression to be evaluated "
},
{"threads","Lists threads in GDBMI format.","[-t token]"},
{"registers","Lists registers in GDBMI format","[-t token]"},
@@ -819,57 +819,77 @@ extern "C" HRESULT CALLBACK assign(CIDebugClient *client, PCSTR argsIn)
ExtensionCommandContext exc(client);
std::string errorMessage;
bool success = false;
bool encoded = false;
bool evaluateExpression = false;
int token = 0;
do {
StringList tokens = commandTokens<StringList>(argsIn, &token);
if (tokens.empty()) {
errorMessage = singleLineUsage(commandDescriptions[CmdAssign]);
break;
}
StringList tokens = commandTokens<StringList>(argsIn, &token);
while (!tokens.empty()) {
if (tokens.front() == "-h") {
encoded = true;
tokens.pop_front();
continue;
}
if (tokens.empty()) {
errorMessage = singleLineUsage(commandDescriptions[CmdAssign]);
break;
if (tokens.front() == "-e") {
evaluateExpression = true;
tokens.pop_front();
continue;
}
break;
};
// Parse 'assign locals.x=5'
const std::string::size_type equalsPos = tokens.front().find('=');
if (equalsPos == std::string::npos) {
errorMessage = singleLineUsage(commandDescriptions[CmdAssign]);
break;
}
const std::string iname = tokens.front().substr(0, equalsPos);
const std::string value = tokens.front().substr(equalsPos + 1, tokens.front().size() - equalsPos - 1);
// get the symbolgroup
int currentFrame = ExtensionContext::instance().symbolGroupFrame();
if (currentFrame < 0) {
CIDebugControl *control = ExtensionCommandContext::instance()->control();
DEBUG_STACK_FRAME frame;
if (FAILED(control->GetStackTrace(0, 0, 0, &frame, 1, NULL))) {
errorMessage = "No current frame.";
break;
// Parse 'assign locals.x=5'
const std::string::size_type equalsPos = tokens.empty() ? std::string::npos
: tokens.front().find('=');
if (equalsPos == std::string::npos) {
errorMessage = singleLineUsage(commandDescriptions[CmdAssign]);
} else {
std::string iname = tokens.front().substr(0, equalsPos);
const std::string value = tokens.front().substr(equalsPos + 1,
tokens.front().size() - equalsPos - 1);
SymbolGroup *symGroup = nullptr;
if (evaluateExpression) {
WatchesSymbolGroup *watchesSymGroup
= ExtensionContext::instance().watchesSymbolGroup(exc.symbols(), &errorMessage);
std::string tempAssignIname = "watch.tmpassign";
if (watchesSymGroup) {
if (watchesSymGroup->addWatch(exc.symbols(),
tempAssignIname,
stringFromHex(iname),
&errorMessage)) {
iname = tempAssignIname;
symGroup = watchesSymGroup;
}
}
} else {
// get the symbolgroup
int currentFrame = ExtensionContext::instance().symbolGroupFrame();
if (currentFrame < 0) {
CIDebugControl *control = ExtensionCommandContext::instance()->control();
DEBUG_STACK_FRAME frame;
if (FAILED(control->GetStackTrace(0, 0, 0, &frame, 1, NULL)))
errorMessage = "No current frame.";
else
currentFrame = frame.FrameNumber;
}
if (currentFrame >= 0) {
symGroup = ExtensionContext::instance().symbolGroup(exc.symbols(),
exc.threadId(),
currentFrame,
&errorMessage);
}
currentFrame = frame.FrameNumber;
}
SymbolGroup *symGroup = ExtensionContext::instance().symbolGroup(exc.symbols(), exc.threadId(), currentFrame, &errorMessage);
if (!symGroup)
break;
success = symGroup->assign(iname, encoded ? stringFromHex(value) : value,
SymbolGroupValueContext(exc.dataSpaces(), exc.symbols()),
&errorMessage);
} while (false);
if (symGroup
&& symGroup->assign(iname,
encoded ? stringFromHex(value) : value,
SymbolGroupValueContext(exc.dataSpaces(), exc.symbols()),
&errorMessage)) {
ExtensionContext::instance().report('R', token, 0, "assign", "Ok");
return S_OK;
}
}
if (success)
ExtensionContext::instance().report('R', token, 0, "assign", "Ok");
else
ExtensionContext::instance().report('N', token, 0, "assign", errorMessage.c_str());
ExtensionContext::instance().report('N', token, 0, "assign", errorMessage.c_str());
return S_OK;
}

11
src/plugins/debugger/cdb/cdbengine.cpp
View File

@@ -929,8 +929,15 @@ void CdbEngine::assignValueInDebugger(WatchItem *w, const QString &expr, const Q
qWarning("Internal error: assignValueInDebugger: Invalid state or no stack frame.");
return;
}
runCommand({m_extensionCommandPrefix + "assign -h " + w->iname + '=' + toHex(value.toString()),
NoFlags});
if (m_pythonVersion > 0x030000 && w->isWatcher()) {
runCommand({m_extensionCommandPrefix + "assign -h -e " + toHex(w->expression()) + '='
+ toHex(value.toString()),
NoFlags});
} else {
runCommand({m_extensionCommandPrefix + "assign -h " + w->iname + '=' + toHex(value.toString()),
NoFlags});
}
// Update all locals in case we change a union or something pointed to
// that affects other variables, too.
updateLocals();