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debugTraceIndex

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This commit is contained in:
Ben Burdette 2022-03-28 12:09:21 -06:00
parent 1bec3fb337
commit 14f515544b
1 changed files with 78 additions and 21 deletions
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99
src/libcmd/repl.cc
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@ -49,7 +49,8 @@ struct NixRepl
ref<EvalState> state;
Bindings * autoArgs;
const Error *debugError;
const Error *debugError;
int debugTraceIndex;
Strings loadedFiles;
@ -96,6 +97,7 @@ string removeWhitespace(string s)
NixRepl::NixRepl(ref<EvalState> state)
: state(state)
, debugTraceIndex(0)
, staticEnv(new StaticEnv(false, state->staticBaseEnv.get()))
, historyFile(getDataDir() + "/nix/repl-history")
{
@ -403,6 +405,28 @@ StorePath NixRepl::getDerivationPath(Value & v) {
return drvPath;
}
std::ostream& showDebugTrace(std::ostream &out, const DebugTrace &dt)
{
if (dt.is_error)
out << ANSI_RED "error: " << ANSI_NORMAL;
out << dt.hint.str() << "\n";
if (dt.pos.has_value() && (*dt.pos)) {
auto pos = dt.pos.value();
out << "\n";
printAtPos(pos, out);
auto loc = getCodeLines(pos);
if (loc.has_value()) {
out << "\n";
printCodeLines(out, "", pos, *loc);
out << "\n";
}
}
return out;
}
bool NixRepl::processLine(string line)
{
if (line == "") return true;
@ -444,7 +468,7 @@ bool NixRepl::processLine(string line)
<< " :d <cmd> Debug mode commands\n"
<< " :d stack Show call stack\n"
<< " :d env Show env stack\n"
<< " :d error Show current error\n"
<< " :d show <idx> Show current trace, or change to call stack index\n"
<< " :d go Go until end of program, exception, or builtins.break().\n"
<< " :d step Go one step\n"
;
@ -453,30 +477,63 @@ bool NixRepl::processLine(string line)
else if (command == ":d" || command == ":debug") {
if (arg == "stack") {
int idx = 0;
for (auto iter = this->state->debugTraces.begin();
iter != this->state->debugTraces.end(); ++iter) {
std::cout << "\n" << "… " << iter->hint.str() << "\n";
if (iter->pos.has_value() && (*iter->pos)) {
auto pos = iter->pos.value();
std::cout << "\n";
printAtPos(pos, std::cout);
auto loc = getCodeLines(pos);
if (loc.has_value()) {
std::cout << "\n";
printCodeLines(std::cout, "", pos, *loc);
std::cout << "\n";
}
}
}
iter != this->state->debugTraces.end();
++iter, ++idx) {
std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
showDebugTrace(std::cout, *iter);
}
} else if (arg == "env") {
auto iter = this->state->debugTraces.begin();
if (iter != this->state->debugTraces.end()) {
printStaticEnvBindings(iter->expr);
int idx = 0;
for (auto iter = this->state->debugTraces.begin();
iter != this->state->debugTraces.end();
++iter, ++idx) {
if (idx == this->debugTraceIndex)
{
// std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
printStaticEnvBindings(iter->expr);
break;
}
// std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
// showDebugTrace(std::cout, *iter);
}
// auto iter = this->state->debugTraces.begin();
// if (iter != this->state->debugTraces.end()) {
// printStaticEnvBindings(iter->expr);
// }
}
else if (arg.compare(0,4,"show") == 0) {
try {
// change the DebugTrace index.
debugTraceIndex = stoi(arg.substr(4));
// std::cout << "idx: " << idx << std::endl;
// debugTraceIndex = idx;
}
catch (...)
{
debugTraceIndex = 0;
}
int idx = 0;
for (auto iter = this->state->debugTraces.begin();
iter != this->state->debugTraces.end();
++iter, ++idx) {
if (idx == this->debugTraceIndex)
{
std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
showDebugTrace(std::cout, *iter);
break;
}
// std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
// showDebugTrace(std::cout, *iter);
}
}
else if (arg == "error") {
// TODO: remove, along with debugError.
if (this->debugError) {
showErrorInfo(std::cout, debugError->info(), true);
}