// Handle a continue cmd, or setup stepping.
void DebuggerProxy::processFlowControl(CmdInterrupt &cmd) {
TRACE(2, "DebuggerProxy::processFlowControl\n");
switch (m_flow->getType()) {
case DebuggerCommand::KindOfContinue:
if (!m_flow->decCount()) {
m_flow.reset();
}
break;
case DebuggerCommand::KindOfStep:
{
// allows the breakpoint to be hit again when returns
// from function call
BreakPointInfoPtr bp = getBreakPointAtCmd(cmd);
if (bp) {
bp->setBreakable(getRealStackDepth());
}
break;
}
case DebuggerCommand::KindOfOut:
case DebuggerCommand::KindOfNext:
m_flow->setStackDepth(getStackDepth());
m_flow->setVMDepth(g_vmContext->m_nesting);
m_flow->setFileLine(cmd.getFileLine());
break;
default:
assert(false);
break;
}
}
// Determine if an outstanding flow control cmd has run it's course and we
// should stop execution.
bool DebuggerProxy::breakByFlowControl(CmdInterrupt &cmd) {
TRACE(2, "DebuggerProxy::breakByFlowControl\n");
switch (m_flow->getType()) {
case DebuggerCommand::KindOfStep: {
if (!m_flow->decCount()) {
// if the line changes and the stack depth is the same
// pop the breakpoint depth stack
m_flow.reset();
return true;
}
break;
}
case DebuggerCommand::KindOfNext: {
int currentVMDepth = g_vmContext->m_nesting;
int currentStackDepth = getStackDepth();
if (currentVMDepth <= m_flow->getVMDepth() &&
currentStackDepth <= m_flow->getStackDepth() &&
m_flow->getFileLine() != cmd.getFileLine()) {
if (!m_flow->decCount()) {
m_flow.reset();
return true;
}
}
break;
}
case DebuggerCommand::KindOfOut: {
int currentVMDepth = g_vmContext->m_nesting;
int currentStackDepth = getStackDepth();
if (currentVMDepth < m_flow->getVMDepth()) {
// Cut corner here, just break when cross VM boundary no matter how
// many levels we want to go out of
m_flow.reset();
return true;
} else if (m_flow->getStackDepth() - currentStackDepth >=
m_flow->getCount()) {
m_flow.reset();
return true;
}
break;
}
default:
break;
}
return false;
}
void CDebugHelper::printBacktrace(lua_State* pState)
{
int depth = getStackDepth(pState);
for (int i = 0; i < depth; ++i)
{
printFrame(pState, i);
}
}
void CDebugHelper::returnHook(lua_State* pState, lua_Debug* ar)
{
if(ar->event != LUA_HOOKRET)
{
return;
}
int curStackDepth = getStackDepth(pState);
if(m_curStackDepth < curStackDepth)
{
return;
}
printLine(pState);
return run(pState);
}
void CDebugHelper::setNextHook(lua_State* pState)
{
m_hook = &CDebugHelper::nextHook;
m_curStackDepth = getStackDepth(pState);
}
void CDebugHelper::setReturnHook(lua_State* pState)
{
m_hook = &CDebugHelper::returnHook;
m_curStackDepth = getStackDepth(pState);
}
