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'debugMode'

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This commit is contained in:
Ben Burdette 2022-05-19 17:01:23 -06:00
parent 7ddef73d02
commit 0600df86b8
7 changed files with 103 additions and 69 deletions
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38
src/libexpr/eval.cc
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@ -463,6 +463,7 @@ EvalState::EvalState(
, emptyBindings(0)
, store(store)
, buildStore(buildStore ? buildStore : store)
, debugMode(false)
, debugStop(false)
, debugQuit(false)
, regexCache(makeRegexCache())
@ -810,6 +811,31 @@ std::unique_ptr<ValMap> mapStaticEnvBindings(const SymbolTable & st, const Stati
return vm;
}
void EvalState::debugRepl(const Error * error, const Env & env, const Expr & expr)
{
auto dts =
error && expr.getPos()
? std::make_unique<DebugTraceStacker>(
*this,
DebugTrace {
.pos = error->info().errPos ? *error->info().errPos : positions[expr.getPos()],
.expr = expr,
.env = env,
.hint = error->info().msg,
.isError = true
})
: nullptr;
if (error)
printError("%s\n\n" ANSI_BOLD "Starting REPL to allow you to inspect the current state of the evaluator.\n" ANSI_NORMAL, error->what());
auto se = getStaticEnv(expr);
if (se) {
auto vm = mapStaticEnvBindings(symbols, *se.get(), env);
runRepl(*this, *vm);
}
}
/* Every "format" object (even temporary) takes up a few hundred bytes
of stack space, which is a real killer in the recursive
evaluator. So here are some helper functions for throwing
@ -1043,8 +1069,8 @@ DebugTraceStacker::DebugTraceStacker(EvalState & evalState, DebugTrace t)
, trace(std::move(t))
{
evalState.debugTraces.push_front(trace);
if (evalState.debugStop && debuggerHook)
debuggerHook(evalState, nullptr, trace.env, trace.expr);
if (evalState.debugStop && evalState.debugMode)
evalState.debugRepl(nullptr, trace.env, trace.expr);
}
void Value::mkString(std::string_view s)
@ -1241,7 +1267,7 @@ void EvalState::cacheFile(
fileParseCache[resolvedPath] = e;
try {
auto dts = debuggerHook
auto dts = debugMode
? makeDebugTraceStacker(
*this,
*e,
@ -1475,7 +1501,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
e->eval(state, env, vTmp);
try {
auto dts = debuggerHook
auto dts = state.debugMode
? makeDebugTraceStacker(
state,
*this,
@ -1644,7 +1670,7 @@ void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value &
/* Evaluate the body. */
try {
auto dts = debuggerHook
auto dts = debugMode
? makeDebugTraceStacker(
*this, *lambda.body, env2, positions[lambda.pos],
"while evaluating %s",
@ -2072,7 +2098,7 @@ void EvalState::forceValueDeep(Value & v)
for (auto & i : *v.attrs)
try {
// If the value is a thunk, we're evaling. Otherwise no trace necessary.
auto dts = debuggerHook && i.value->isThunk()
auto dts = debugMode && i.value->isThunk()
? makeDebugTraceStacker(*this, *i.value->thunk.expr, *i.value->thunk.env, positions[i.pos],
"while evaluating the attribute '%1%'", symbols[i.name])
: nullptr;