void AMXStackFramePrinter::Print(const AMXStackFrame &frame) {
PrintReturnAddress(frame);
*stream_ << " in ";
AMXDebugSymbol caller = GetCallerSymbol(frame);
if (caller) {
PrintCallerName(frame, caller);
} else {
PrintCallerName(frame);
}
*stream_ << " (";
PrintArgumentList(frame);
*stream_ << ")";
if (HaveDebugInfo() && UsesAutomata(frame)) {
*stream_ << " ";
PrintState(frame);
}
if (HaveDebugInfo() && frame.return_address() != 0) {
*stream_ << " at ";
PrintSourceLocation(frame.return_address());
}
}
void AMXStackFramePrinter::PrintArgumentList(const AMXStackFrame &frame) {
AMXStackFrame prev_frame = frame.GetPrevious();
if (prev_frame) {
// Although the symbol's code start address points at the state
// switch code block, function arguments actually use the real
// function address for the code start because in different states
// they may be not the same.
cell arg_address = frame.caller_address();
if (UsesAutomata(frame)) {
arg_address = GetRealFunctionAddress(frame.amx(), frame.caller_address(),
frame.return_address());
}
std::vector<AMXDebugSymbol> args;
int num_actual_args = 0;
if (HaveDebugInfo()) {
std::remove_copy_if(debug_info_->GetSymbols().begin(),
debug_info_->GetSymbols().end(),
std::back_inserter(args),
std::not1(IsArgumentOf(arg_address)));
std::sort(args.begin(), args.end());
num_actual_args = static_cast<int>(args.size());
} else {
static const int kMaxRawArgs = 10;
num_actual_args = std::min(kMaxRawArgs,
GetNumArgs(frame.amx(), prev_frame.address()));
}
// Print a comma-separated list of arguments and their values.
// If debug info is not available argument names are omitted,
// so only the values are printed.
for (int i = 0; i < num_actual_args; i++) {
if (i > 0) {
*stream_ << ", ";
}
if (HaveDebugInfo()) {
PrintArgument(prev_frame, args[i], i);
} else {
PrintArgument(prev_frame, i);
}
}
// If the number of actual arguments passed to the function exceeds
// that obtained via debug info the function may take a variable
// number of arguments. In this case we don't evaluate them but just
// just say that they are present as we can't say anything about
// their names and types.
int num_var_args = GetNumArgs(frame.amx(), prev_frame.address())
- num_actual_args;
if (num_var_args > 0) {
if (num_actual_args != 0) {
*stream_ << ", ";
}
PrintVariableArguments(num_var_args);
}
}
}
void AMXStackFramePrinter::Print(const AMXStackFrame &frame) {
PrintReturnAddress(frame);
stream_ << " in ";
PrintCallerNameAndArguments(frame);
if (debug_info_.IsLoaded() && UsesAutomata(frame)) {
stream_ << " ";
PrintState(frame);
}
if (debug_info_.IsLoaded() && frame.return_address() != 0) {
stream_ << " at ";
PrintSourceLocation(frame.return_address());
}
}
