bool Debugger::hasBreakpoint(SourceID sourceID, const TextPosition& position, Breakpoint *hitBreakpoint)
{
if (!m_breakpointsActivated)
return false;
SourceIDToBreakpointsMap::const_iterator it = m_sourceIDToBreakpoints.find(sourceID);
if (it == m_sourceIDToBreakpoints.end())
return false;
unsigned line = position.m_line.zeroBasedInt();
unsigned column = position.m_column.zeroBasedInt();
LineToBreakpointsMap::const_iterator breaksIt = it->value.find(line);
if (breaksIt == it->value.end())
return false;
bool hit = false;
const BreakpointsList& breakpoints = *breaksIt->value;
Breakpoint* breakpoint;
for (breakpoint = breakpoints.head(); breakpoint; breakpoint = breakpoint->next()) {
unsigned breakLine = breakpoint->line;
unsigned breakColumn = breakpoint->column;
// Since frontend truncates the indent, the first statement in a line must match the breakpoint (line,0).
ASSERT(this == m_currentCallFrame->codeBlock()->globalObject()->debugger());
if ((line != m_lastExecutedLine && line == breakLine && !breakColumn)
|| (line == breakLine && column == breakColumn)) {
hit = true;
break;
}
}
if (!hit)
return false;
if (hitBreakpoint)
*hitBreakpoint = *breakpoint;
if (breakpoint->condition.isEmpty())
return true;
// We cannot stop in the debugger while executing condition code,
// so make it looks like the debugger is already paused.
TemporaryPausedState pausedState(*this);
JSValue exception;
DebuggerCallFrame* debuggerCallFrame = currentDebuggerCallFrame();
JSValue result = debuggerCallFrame->evaluate(breakpoint->condition, exception);
// We can lose the debugger while executing JavaScript.
if (!m_currentCallFrame)
return false;
if (exception) {
// An erroneous condition counts as "false".
handleExceptionInBreakpointCondition(m_currentCallFrame, exception);
return false;
}
return result.toBoolean(m_currentCallFrame);
}
BreakpointID Debugger::setBreakpoint(Breakpoint& breakpoint, bool& existing)
{
ASSERT(breakpoint.resolved);
ASSERT(breakpoint.sourceID != noSourceID);
SourceID sourceID = breakpoint.sourceID;
unsigned line = breakpoint.line;
unsigned column = breakpoint.column;
SourceIDToBreakpointsMap::iterator it = m_sourceIDToBreakpoints.find(breakpoint.sourceID);
if (it == m_sourceIDToBreakpoints.end())
it = m_sourceIDToBreakpoints.set(sourceID, LineToBreakpointsMap()).iterator;
LineToBreakpointsMap::iterator breaksIt = it->value.find(line);
if (breaksIt == it->value.end())
breaksIt = it->value.set(line, adoptRef(new BreakpointsList)).iterator;
BreakpointsList& breakpoints = *breaksIt->value;
for (Breakpoint* current = breakpoints.head(); current; current = current->next()) {
if (current->column == column) {
// Found existing breakpoint. Do not create a duplicate at this location.
existing = true;
return current->id;
}
}
existing = false;
BreakpointID id = ++m_topBreakpointID;
RELEASE_ASSERT(id != noBreakpointID);
breakpoint.id = id;
Breakpoint* newBreakpoint = new Breakpoint(breakpoint);
breakpoints.append(newBreakpoint);
m_breakpointIDToBreakpoint.set(id, newBreakpoint);
toggleBreakpoint(*newBreakpoint, BreakpointEnabled);
return id;
}
BreakpointID Debugger::setBreakpoint(Breakpoint breakpoint, unsigned& actualLine, unsigned& actualColumn)
{
SourceID sourceID = breakpoint.sourceID;
unsigned line = breakpoint.line;
unsigned column = breakpoint.column;
SourceIDToBreakpointsMap::iterator it = m_sourceIDToBreakpoints.find(sourceID);
if (it == m_sourceIDToBreakpoints.end())
it = m_sourceIDToBreakpoints.set(sourceID, LineToBreakpointsMap()).iterator;
LineToBreakpointsMap::iterator breaksIt = it->value.find(line);
if (breaksIt == it->value.end())
breaksIt = it->value.set(line, adoptRef(new BreakpointsList)).iterator;
BreakpointsList& breakpoints = *breaksIt->value;
for (Breakpoint* current = breakpoints.head(); current; current = current->next()) {
if (current->column == column) {
// The breakpoint already exists. We're not allowed to create a new
// breakpoint at this location. Rather than returning the breakpointID
// of the pre-existing breakpoint, we need to return noBreakpointID
// to indicate that we're not creating a new one.
return noBreakpointID;
}
}
BreakpointID id = ++m_topBreakpointID;
RELEASE_ASSERT(id != noBreakpointID);
breakpoint.id = id;
actualLine = line;
actualColumn = column;
Breakpoint* newBreakpoint = new Breakpoint(breakpoint);
breakpoints.append(newBreakpoint);
m_breakpointIDToBreakpoint.set(id, newBreakpoint);
toggleBreakpoint(breakpoint, BreakpointEnabled);
return id;
}
void Debugger::removeBreakpoint(BreakpointID id)
{
ASSERT(id != noBreakpointID);
BreakpointIDToBreakpointMap::iterator idIt = m_breakpointIDToBreakpoint.find(id);
ASSERT(idIt != m_breakpointIDToBreakpoint.end());
Breakpoint* breakpoint = idIt->value;
SourceID sourceID = breakpoint->sourceID;
ASSERT(sourceID);
SourceIDToBreakpointsMap::iterator it = m_sourceIDToBreakpoints.find(sourceID);
ASSERT(it != m_sourceIDToBreakpoints.end());
LineToBreakpointsMap::iterator breaksIt = it->value.find(breakpoint->line);
ASSERT(breaksIt != it->value.end());
toggleBreakpoint(*breakpoint, BreakpointDisabled);
BreakpointsList& breakpoints = *breaksIt->value;
#if !ASSERT_DISABLED
bool found = false;
for (Breakpoint* current = breakpoints.head(); current && !found; current = current->next()) {
if (current->id == breakpoint->id)
found = true;
}
ASSERT(found);
#endif
m_breakpointIDToBreakpoint.remove(idIt);
breakpoints.remove(breakpoint);
delete breakpoint;
if (breakpoints.isEmpty()) {
it->value.remove(breaksIt);
if (it->value.isEmpty())
m_sourceIDToBreakpoints.remove(it);
}
}
