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Combine AbstractPos, PosAdapter, and Pos

Browse source 
Also move `SourcePath` into `libutil`.

These changes allow `error.hh` and `error.cc` to access source path and
position information, which we can use to produce better error messages
(for example, we could consider omitting filenames when two or more
consecutive stack frames originate from the same file).
This commit is contained in:
Rebecca Turner 2023-12-18 13:14:42 -08:00
parent 6a243e5ed2
commit 4feb7d9f71
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30 changed files with 561 additions and 489 deletions
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9
src/libexpr/eval.cc
View file

@ -19,6 +19,7 @@
#include "signals.hh"
#include "gc-small-vector.hh"
#include "url.hh"
#include "fetch-to-store.hh"
#include <algorithm>
#include <chrono>
@ -870,7 +871,7 @@ void EvalState::runDebugRepl(const Error * error, const Env & env, const Expr &
? std::make_unique<DebugTraceStacker>(
*this,
DebugTrace {
.pos = error->info().errPos ? error->info().errPos : static_cast<std::shared_ptr<AbstractPos>>(positions[expr.getPos()]),
.pos = error->info().errPos ? error->info().errPos : positions[expr.getPos()],
.expr = expr,
.env = env,
.hint = error->info().msg,
@ -909,7 +910,7 @@ static std::unique_ptr<DebugTraceStacker> makeDebugTraceStacker(
EvalState & state,
Expr & expr,
Env & env,
std::shared_ptr<AbstractPos> && pos,
std::shared_ptr<Pos> && pos,
const char * s,
const std::string & s2)
{
@ -1187,7 +1188,7 @@ void EvalState::evalFile(const SourcePath & path, Value & v, bool mustBeTrivial)
*this,
*e,
this->baseEnv,
e->getPos() ? static_cast<std::shared_ptr<AbstractPos>>(positions[e->getPos()]) : nullptr,
e->getPos() ? std::make_shared<Pos>(positions[e->getPos()]) : nullptr,
"while evaluating the file '%1%':", resolvedPath.to_string())
: nullptr;
@ -2368,7 +2369,7 @@ StorePath EvalState::copyPathToStore(NixStringContext & context, const SourcePat
auto dstPath = i != srcToStore.end()
? i->second
: [&]() {
auto dstPath = path.fetchToStore(*store, path.baseName(), FileIngestionMethod::Recursive, nullptr, repair);
auto dstPath = fetchToStore(*store, path, path.baseName(), FileIngestionMethod::Recursive, nullptr, repair);
allowPath(dstPath);
srcToStore.insert_or_assign(path, dstPath);
printMsg(lvlChatty, "copied source '%1%' -> '%2%'", path, store->printStorePath(dstPath));