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Merge pull request #9925 from 9999years/fmt-cleanup

Browse source 
Cleanup `fmt.hh`

(cherry picked from commit 47a1dbb4b8e7913cbb9b4d604728b912e76e4ca0)
Change-Id: Id076a45cb39652f437fe3f8bda10c310a9894777
This commit is contained in:
eldritch horrors 2024-03-08 08:10:05 +01:00
parent 3d9c7fc1e7
commit b221a14f0a
31 changed files with 548 additions and 497 deletions
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2
src/build-remote/build-remote.cc
View file

@ -202,7 +202,7 @@ static int main_build_remote(int argc, char * * argv)
else
drvstr = "<unknown>";
auto error = hintformat(errorText);
auto error = HintFmt(errorText);
error
% drvstr
% neededSystem

10
src/libexpr/eval-error.cc
View file

@ -28,7 +28,7 @@ template<class T>
EvalErrorBuilder<T> & EvalErrorBuilder<T>::withTrace(PosIdx pos, const std::string_view text)
{
error.err.traces.push_front(
Trace{.pos = error.state.positions[pos], .hint = hintfmt(std::string(text)), .frame = false});
Trace{.pos = error.state.positions[pos], .hint = HintFmt(std::string(text)), .frame = false});
return *this;
}
@ -36,7 +36,7 @@ template<class T>
EvalErrorBuilder<T> & EvalErrorBuilder<T>::withFrameTrace(PosIdx pos, const std::string_view text)
{
error.err.traces.push_front(
Trace{.pos = error.state.positions[pos], .hint = hintformat(std::string(text)), .frame = true});
Trace{.pos = error.state.positions[pos], .hint = HintFmt(std::string(text)), .frame = true});
return *this;
}
@ -57,13 +57,13 @@ EvalErrorBuilder<T> & EvalErrorBuilder<T>::withFrame(const Env & env, const Expr
.pos = error.state.positions[expr.getPos()],
.expr = expr,
.env = env,
.hint = hintformat("Fake frame for debugging purposes"),
.hint = HintFmt("Fake frame for debugging purposes"),
.isError = true});
return *this;
}
template<class T>
EvalErrorBuilder<T> & EvalErrorBuilder<T>::addTrace(PosIdx pos, hintformat hint, bool frame)
EvalErrorBuilder<T> & EvalErrorBuilder<T>::addTrace(PosIdx pos, HintFmt hint, bool frame)
{
error.addTrace(error.state.positions[pos], hint, frame);
return *this;
@ -75,7 +75,7 @@ EvalErrorBuilder<T> &
EvalErrorBuilder<T>::addTrace(PosIdx pos, std::string_view formatString, const Args &... formatArgs)
{
addTrace(error.state.positions[pos], hintfmt(std::string(formatString), formatArgs...));
addTrace(error.state.positions[pos], HintFmt(std::string(formatString), formatArgs...));
return *this;
}

2
src/libexpr/eval-error.hh
View file

@ -90,7 +90,7 @@ public:
[[nodiscard, gnu::noinline]] EvalErrorBuilder<T> & withFrame(const Env & e, const Expr & ex);
[[nodiscard, gnu::noinline]] EvalErrorBuilder<T> & addTrace(PosIdx pos, hintformat hint, bool frame = false);
[[nodiscard, gnu::noinline]] EvalErrorBuilder<T> & addTrace(PosIdx pos, HintFmt hint, bool frame = false);
template<typename... Args>
[[nodiscard, gnu::noinline]] EvalErrorBuilder<T> &

8
src/libexpr/eval.cc
View file

@ -809,7 +809,7 @@ void EvalState::addErrorTrace(Error & e, const char * s, const std::string & s2)
void EvalState::addErrorTrace(Error & e, const PosIdx pos, const char * s, const std::string & s2, bool frame) const
{
e.addTrace(positions[pos], hintfmt(s, s2), frame);
e.addTrace(positions[pos], HintFmt(s, s2), frame);
}
template<typename... Args>
@ -825,7 +825,7 @@ static std::unique_ptr<DebugTraceStacker> makeDebugTraceStacker(
.pos = std::move(pos),
.expr = expr,
.env = env,
.hint = hintfmt(formatArgs...),
.hint = HintFmt(formatArgs...),
.isError = false
});
}
@ -2782,7 +2782,7 @@ std::optional<std::string> EvalState::resolveSearchPathPath(const SearchPath::Pa
res = { store->toRealPath(storePath) };
} catch (FileTransferError & e) {
logWarning({
.msg = hintfmt("Nix search path entry '%1%' cannot be downloaded, ignoring", value)
.msg = HintFmt("Nix search path entry '%1%' cannot be downloaded, ignoring", value)
});
res = std::nullopt;
}
@ -2802,7 +2802,7 @@ std::optional<std::string> EvalState::resolveSearchPathPath(const SearchPath::Pa
res = { path };
else {
logWarning({
.msg = hintfmt("Nix search path entry '%1%' does not exist, ignoring", value)
.msg = HintFmt("Nix search path entry '%1%' does not exist, ignoring", value)
});
res = std::nullopt;
}

2
src/libexpr/eval.hh
View file

@ -147,7 +147,7 @@ struct DebugTrace {
std::shared_ptr<Pos> pos;
const Expr & expr;
const Env & env;
hintformat hint;
HintFmt hint;
bool isError;
};

4
src/libexpr/flake/flake.cc
View file

@ -148,7 +148,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
} catch (Error & e) {
e.addTrace(
state.positions[attr.pos],
hintfmt("while evaluating flake attribute '%s'", state.symbols[attr.name]));
HintFmt("while evaluating flake attribute '%s'", state.symbols[attr.name]));
throw;
}
}
@ -157,7 +157,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
try {
input.ref = FlakeRef::fromAttrs(attrs);
} catch (Error & e) {
e.addTrace(state.positions[pos], hintfmt("while evaluating flake input"));
e.addTrace(state.positions[pos], HintFmt("while evaluating flake input"));
throw;
}
else {

6
src/libexpr/lexer.l
View file

@ -153,7 +153,7 @@ or { return OR_KW; }
yylval->n = boost::lexical_cast<int64_t>(yytext);
} catch (const boost::bad_lexical_cast &) {
throw ParseError(ErrorInfo{
.msg = hintfmt("invalid integer '%1%'", yytext),
.msg = HintFmt("invalid integer '%1%'", yytext),
.pos = state->positions[CUR_POS],
});
}
@ -163,7 +163,7 @@ or { return OR_KW; }
yylval->nf = strtod(yytext, 0);
if (errno != 0)
throw ParseError(ErrorInfo{
.msg = hintfmt("invalid float '%1%'", yytext),
.msg = HintFmt("invalid float '%1%'", yytext),
.pos = state->positions[CUR_POS],
});
return FLOAT;
@ -292,7 +292,7 @@ or { return OR_KW; }
<INPATH_SLASH>{ANY} |
<INPATH_SLASH><<EOF>> {
throw ParseError(ErrorInfo{
.msg = hintfmt("path has a trailing slash"),
.msg = HintFmt("path has a trailing slash"),
.pos = state->positions[CUR_POS],
});
}

8
src/libexpr/parser-state.hh
View file

@ -63,7 +63,7 @@ struct ParserState
inline void ParserState::dupAttr(const AttrPath & attrPath, const PosIdx pos, const PosIdx prevPos)
{
throw ParseError({
.msg = hintfmt("attribute '%1%' already defined at %2%",
.msg = HintFmt("attribute '%1%' already defined at %2%",
showAttrPath(symbols, attrPath), positions[prevPos]),
.pos = positions[pos]
});
@ -72,7 +72,7 @@ inline void ParserState::dupAttr(const AttrPath & attrPath, const PosIdx pos, co
inline void ParserState::dupAttr(Symbol attr, const PosIdx pos, const PosIdx prevPos)
{
throw ParseError({
.msg = hintfmt("attribute '%1%' already defined at %2%", symbols[attr], positions[prevPos]),
.msg = HintFmt("attribute '%1%' already defined at %2%", symbols[attr], positions[prevPos]),
.pos = positions[pos]
});
}
@ -153,13 +153,13 @@ inline Formals * ParserState::validateFormals(Formals * formals, PosIdx pos, Sym
}
if (duplicate)
throw ParseError({
.msg = hintfmt("duplicate formal function argument '%1%'", symbols[duplicate->first]),
.msg = HintFmt("duplicate formal function argument '%1%'", symbols[duplicate->first]),
.pos = positions[duplicate->second]
});
if (arg && formals->has(arg))
throw ParseError({
.msg = hintfmt("duplicate formal function argument '%1%'", symbols[arg]),
.msg = HintFmt("duplicate formal function argument '%1%'", symbols[arg]),
.pos = positions[pos]
});

8
src/libexpr/parser.y
View file

@ -63,7 +63,7 @@ using namespace nix;
void yyerror(YYLTYPE * loc, yyscan_t scanner, ParserState * state, const char * error)
{
throw ParseError({
.msg = hintfmt(error),
.msg = HintFmt(error),
.pos = state->positions[state->at(*loc)]
});
}
@ -152,7 +152,7 @@ expr_function
| LET binds IN expr_function
{ if (!$2->dynamicAttrs.empty())
throw ParseError({
.msg = hintfmt("dynamic attributes not allowed in let"),
.msg = HintFmt("dynamic attributes not allowed in let"),
.pos = state->positions[CUR_POS]
});
$$ = new ExprLet($2, $4);
@ -242,7 +242,7 @@ expr_simple
static bool noURLLiterals = experimentalFeatureSettings.isEnabled(Xp::NoUrlLiterals);
if (noURLLiterals)
throw ParseError({
.msg = hintfmt("URL literals are disabled"),
.msg = HintFmt("URL literals are disabled"),
.pos = state->positions[CUR_POS]
});
$$ = new ExprString(std::string($1));
@ -338,7 +338,7 @@ attrs
delete str;
} else
throw ParseError({
.msg = hintfmt("dynamic attributes not allowed in inherit"),
.msg = HintFmt("dynamic attributes not allowed in inherit"),
.pos = state->positions[state->at(@2)]
});
}

10
src/libexpr/primops.cc
View file

@ -748,7 +748,7 @@ static RegisterPrimOp primop_break({
if (state.debugRepl && !state.debugTraces.empty()) {
auto error = Error(ErrorInfo {
.level = lvlInfo,
.msg = hintfmt("breakpoint reached"),
.msg = HintFmt("breakpoint reached"),
.pos = state.positions[pos],
});
@ -759,7 +759,7 @@ static RegisterPrimOp primop_break({
// If the user elects to quit the repl, throw an exception.
throw Error(ErrorInfo{
.level = lvlInfo,
.msg = hintfmt("quit the debugger"),
.msg = HintFmt("quit the debugger"),
.pos = nullptr,
});
}
@ -814,7 +814,7 @@ static void prim_addErrorContext(EvalState & state, const PosIdx pos, Value * *
auto message = state.coerceToString(pos, *args[0], context,
"while evaluating the error message passed to builtins.addErrorContext",
false, false).toOwned();
e.addTrace(nullptr, hintfmt(message), true);
e.addTrace(nullptr, HintFmt(message), true);
throw;
}
}
@ -1065,7 +1065,7 @@ static void prim_derivationStrict(EvalState & state, const PosIdx pos, Value * *
* often results from the composition of several functions
* (derivationStrict, derivation, mkDerivation, mkPythonModule, etc.)
*/
e.addTrace(nullptr, hintfmt(
e.addTrace(nullptr, HintFmt(
"while evaluating derivation '%s'\n"
" whose name attribute is located at %s",
drvName, pos), true);
@ -1226,7 +1226,7 @@ drvName, Bindings * attrs, Value & v)
} catch (Error & e) {
e.addTrace(state.positions[i->pos],
hintfmt("while evaluating attribute '%1%' of derivation '%2%'", key, drvName),
HintFmt("while evaluating attribute '%1%' of derivation '%2%'", key, drvName),
true);
throw;
}

22
src/libexpr/primops/fetchClosure.cc
View file

@ -22,7 +22,7 @@ static void runFetchClosureWithRewrite(EvalState & state, const PosIdx pos, Stor
auto rewrittenPath = makeContentAddressed(fromStore, *state.store, fromPath);
if (toPathMaybe && *toPathMaybe != rewrittenPath)
throw Error({
.msg = hintfmt("rewriting '%s' to content-addressed form yielded '%s', while '%s' was expected",
.msg = HintFmt("rewriting '%s' to content-addressed form yielded '%s', while '%s' was expected",
state.store->printStorePath(fromPath),
state.store->printStorePath(rewrittenPath),
state.store->printStorePath(*toPathMaybe)),
@ -30,7 +30,7 @@ static void runFetchClosureWithRewrite(EvalState & state, const PosIdx pos, Stor
});
if (!toPathMaybe)
throw Error({
.msg = hintfmt(
.msg = HintFmt(
"rewriting '%s' to content-addressed form yielded '%s'\n"
"Use this value for the 'toPath' attribute passed to 'fetchClosure'",
state.store->printStorePath(fromPath),
@ -49,7 +49,7 @@ static void runFetchClosureWithRewrite(EvalState & state, const PosIdx pos, Stor
// We don't perform the rewriting when outPath already exists, as an optimisation.
// However, we can quickly detect a mistake if the toPath is input addressed.
throw Error({
.msg = hintfmt(
.msg = HintFmt(
"The 'toPath' value '%s' is input-addressed, so it can't possibly be the result of rewriting to a content-addressed path.\n\n"
"Set 'toPath' to an empty string to make Nix report the correct content-addressed path.",
state.store->printStorePath(toPath)),
@ -72,7 +72,7 @@ static void runFetchClosureWithContentAddressedPath(EvalState & state, const Pos
if (!info->isContentAddressed(*state.store)) {
throw Error({
.msg = hintfmt(
.msg = HintFmt(
"The 'fromPath' value '%s' is input-addressed, but 'inputAddressed' is set to 'false' (default).\n\n"
"If you do intend to fetch an input-addressed store path, add\n\n"
" inputAddressed = true;\n\n"
@ -98,7 +98,7 @@ static void runFetchClosureWithInputAddressedPath(EvalState & state, const PosId
if (info->isContentAddressed(*state.store)) {
throw Error({
.msg = hintfmt(
.msg = HintFmt(
"The store object referred to by 'fromPath' at '%s' is not input-addressed, but 'inputAddressed' is set to 'true'.\n\n"
"Remove the 'inputAddressed' attribute (it defaults to 'false') to expect 'fromPath' to be content-addressed",
state.store->printStorePath(fromPath)),
@ -152,14 +152,14 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
else
throw Error({
.msg = hintfmt("attribute '%s' isn't supported in call to 'fetchClosure'", attrName),
.msg = HintFmt("attribute '%s' isn't supported in call to 'fetchClosure'", attrName),
.pos = state.positions[pos]
});
}
if (!fromPath)
throw Error({
.msg = hintfmt("attribute '%s' is missing in call to 'fetchClosure'", "fromPath"),
.msg = HintFmt("attribute '%s' is missing in call to 'fetchClosure'", "fromPath"),
.pos = state.positions[pos]
});
@ -168,7 +168,7 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
if (inputAddressed) {
if (toPath)
throw Error({
.msg = hintfmt("attribute '%s' is set to true, but '%s' is also set. Please remove one of them",
.msg = HintFmt("attribute '%s' is set to true, but '%s' is also set. Please remove one of them",
"inputAddressed",
"toPath"),
.pos = state.positions[pos]
@ -177,7 +177,7 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
if (!fromStoreUrl)
throw Error({
.msg = hintfmt("attribute '%s' is missing in call to 'fetchClosure'", "fromStore"),
.msg = HintFmt("attribute '%s' is missing in call to 'fetchClosure'", "fromStore"),
.pos = state.positions[pos]
});
@ -187,13 +187,13 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
parsedURL.scheme != "https" &&
!(getEnv("_NIX_IN_TEST").has_value() && parsedURL.scheme == "file"))
throw Error({
.msg = hintfmt("'fetchClosure' only supports http:// and https:// stores"),
.msg = HintFmt("'fetchClosure' only supports http:// and https:// stores"),
.pos = state.positions[pos]
});
if (!parsedURL.query.empty())
throw Error({
.msg = hintfmt("'fetchClosure' does not support URL query parameters (in '%s')", *fromStoreUrl),
.msg = HintFmt("'fetchClosure' does not support URL query parameters (in '%s')", *fromStoreUrl),
.pos = state.positions[pos]
});

2
src/libexpr/print.cc
View file

@ -510,7 +510,7 @@ std::ostream & operator<<(std::ostream & output, const ValuePrinter & printer)
}
template<>
hintformat & hintformat::operator%(const ValuePrinter & value)
HintFmt & HintFmt::operator%(const ValuePrinter & value)
{
fmt % value;
return *this;

2
src/libexpr/print.hh
View file

@ -86,6 +86,6 @@ std::ostream & operator<<(std::ostream & output, const ValuePrinter & printer);
* magenta.
*/
template<>
hintformat & hintformat::operator%(const ValuePrinter & value);
HintFmt & HintFmt::operator%(const ValuePrinter & value);
}

4
src/libexpr/value-to-json.cc
View file

@ -64,7 +64,7 @@ json printValueAsJSON(EvalState & state, bool strict,
out[j] = printValueAsJSON(state, strict, *a.value, a.pos, context, copyToStore);
} catch (Error & e) {
e.addTrace(state.positions[a.pos],
hintfmt("while evaluating attribute '%1%'", j));
HintFmt("while evaluating attribute '%1%'", j));
throw;
}
}
@ -81,7 +81,7 @@ json printValueAsJSON(EvalState & state, bool strict,
out.push_back(printValueAsJSON(state, strict, *elem, pos, context, copyToStore));
} catch (Error & e) {
e.addTrace(state.positions[pos],
hintfmt("while evaluating list element at index %1%", i));
HintFmt("while evaluating list element at index %1%", i));
throw;
}
i++;

4
src/libexpr/value/context.hh
View file

@ -20,8 +20,8 @@ public:
: Error("")
{
raw = raw_;
auto hf = hintfmt(args...);
err.msg = hintfmt("Bad String Context element: %1%: %2%", normaltxt(hf.str()), raw);
auto hf = HintFmt(args...);
err.msg = HintFmt("Bad String Context element: %1%: %2%", Uncolored(hf.str()), raw);
}
};

8
src/libstore/build/derivation-goal.cc
View file

@ -708,7 +708,7 @@ void DerivationGoal::tryToBuild()
if (!outputLocks.lockPaths(lockFiles, "", false)) {
if (!actLock)
actLock = std::make_unique<Activity>(*logger, lvlWarn, actBuildWaiting,
fmt("waiting for lock on %s", magentatxt(showPaths(lockFiles))));
fmt("waiting for lock on %s", Magenta(showPaths(lockFiles))));
worker.waitForAWhile(shared_from_this());
return;
}
@ -762,7 +762,7 @@ void DerivationGoal::tryToBuild()
the wake-up timeout expires. */
if (!actLock)
actLock = std::make_unique<Activity>(*logger, lvlWarn, actBuildWaiting,
fmt("waiting for a machine to build '%s'", magentatxt(worker.store.printStorePath(drvPath))));
fmt("waiting for a machine to build '%s'", Magenta(worker.store.printStorePath(drvPath))));
worker.waitForAWhile(shared_from_this());
outputLocks.unlock();
return;
@ -987,7 +987,7 @@ void DerivationGoal::buildDone()
diskFull |= cleanupDecideWhetherDiskFull();
auto msg = fmt("builder for '%s' %s",
magentatxt(worker.store.printStorePath(drvPath)),
Magenta(worker.store.printStorePath(drvPath)),
statusToString(status));
if (!logger->isVerbose() && !logTail.empty()) {
@ -1523,7 +1523,7 @@ void DerivationGoal::done(
outputLocks.unlock();
buildResult.status = status;
if (ex)
buildResult.errorMsg = fmt("%s", normaltxt(ex->info().msg));
buildResult.errorMsg = fmt("%s", Uncolored(ex->info().msg));
if (buildResult.status == BuildResult::TimedOut)
worker.timedOut = true;
if (buildResult.status == BuildResult::PermanentFailure)

4
src/libstore/build/local-derivation-goal.cc
View file

@ -87,7 +87,7 @@ void handleDiffHook(
} catch (Error & error) {
ErrorInfo ei = error.info();
// FIXME: wrap errors.
ei.msg = hintfmt("diff hook execution failed: %s", ei.msg.str());
ei.msg = HintFmt("diff hook execution failed: %s", ei.msg.str());
logError(ei);
}
}
@ -227,7 +227,7 @@ void LocalDerivationGoal::tryLocalBuild()
if (!buildUser) {
if (!actLock)
actLock = std::make_unique<Activity>(*logger, lvlWarn, actBuildWaiting,
fmt("waiting for a free build user ID for '%s'", magentatxt(worker.store.printStorePath(drvPath))));
fmt("waiting for a free build user ID for '%s'", Magenta(worker.store.printStorePath(drvPath))));
worker.waitForAWhile(shared_from_this());
return;
}

4
src/libstore/filetransfer.cc
View file

@ -881,12 +881,12 @@ template<typename... Args>
FileTransferError::FileTransferError(FileTransfer::Error error, std::optional<std::string> response, const Args & ... args)
: Error(args...), error(error), response(response)
{
const auto hf = hintfmt(args...);
const auto hf = HintFmt(args...);
// FIXME: Due to https://github.com/NixOS/nix/issues/3841 we don't know how
// to print different messages for different verbosity levels. For now
// we add some heuristics for detecting when we want to show the response.
if (response && (response->size() < 1024 || response->find("<html>") != std::string::npos))
err.msg = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), chomp(*response));
err.msg = HintFmt("%1%\n\nresponse body:\n\n%2%", Uncolored(hf.str()), chomp(*response));
else
err.msg = hf;
}

12
src/libstore/sqlite.cc
View file

@ -9,19 +9,19 @@
namespace nix {
SQLiteError::SQLiteError(const char *path, const char *errMsg, int errNo, int extendedErrNo, int offset, hintformat && hf)
SQLiteError::SQLiteError(const char *path, const char *errMsg, int errNo, int extendedErrNo, int offset, HintFmt && hf)
: Error(""), path(path), errMsg(errMsg), errNo(errNo), extendedErrNo(extendedErrNo), offset(offset)
{
auto offsetStr = (offset == -1) ? "" : "at offset " + std::to_string(offset) + ": ";
err.msg = hintfmt("%s: %s%s, %s (in '%s')",
normaltxt(hf.str()),
err.msg = HintFmt("%s: %s%s, %s (in '%s')",
Uncolored(hf.str()),
offsetStr,
sqlite3_errstr(extendedErrNo),
errMsg,
path ? path : "(in-memory)");
}
[[noreturn]] void SQLiteError::throw_(sqlite3 * db, hintformat && hf)
[[noreturn]] void SQLiteError::throw_(sqlite3 * db, HintFmt && hf)
{
int err = sqlite3_errcode(db);
int exterr = sqlite3_extended_errcode(db);
@ -32,7 +32,7 @@ SQLiteError::SQLiteError(const char *path, const char *errMsg, int errNo, int ex
if (err == SQLITE_BUSY || err == SQLITE_PROTOCOL) {
auto exp = SQLiteBusy(path, errMsg, err, exterr, offset, std::move(hf));
exp.err.msg = hintfmt(
exp.err.msg = HintFmt(
err == SQLITE_PROTOCOL
? "SQLite database '%s' is busy (SQLITE_PROTOCOL)"
: "SQLite database '%s' is busy",
@ -248,7 +248,7 @@ void handleSQLiteBusy(const SQLiteBusy & e, time_t & nextWarning)
if (now > nextWarning) {
nextWarning = now + 10;
logWarning({
.msg = hintfmt(e.what())
.msg = HintFmt(e.what())
});
}

8
src/libstore/sqlite.hh
View file

@ -142,19 +142,19 @@ struct SQLiteError : Error
template<typename... Args>
[[noreturn]] static void throw_(sqlite3 * db, const std::string & fs, const Args & ... args) {
throw_(db, hintfmt(fs, args...));
throw_(db, HintFmt(fs, args...));
}
SQLiteError(const char *path, const char *errMsg, int errNo, int extendedErrNo, int offset, hintformat && hf);
SQLiteError(const char *path, const char *errMsg, int errNo, int extendedErrNo, int offset, HintFmt && hf);
protected:
template<typename... Args>
SQLiteError(const char *path, const char *errMsg, int errNo, int extendedErrNo, int offset, const std::string & fs, const Args & ... args)
: SQLiteError(path, errNo, extendedErrNo, offset, hintfmt(fs, args...))
: SQLiteError(path, errMsg, errNo, extendedErrNo, offset, HintFmt(fs, args...))
{ }
[[noreturn]] static void throw_(sqlite3 * db, hintformat && hf);
[[noreturn]] static void throw_(sqlite3 * db, HintFmt && hf);
};

4
src/libutil/error.cc
View file

@ -10,7 +10,7 @@ namespace nix {
const std::string nativeSystem = SYSTEM;
void BaseError::addTrace(std::shared_ptr<Pos> && e, hintformat hint, bool frame)
void BaseError::addTrace(std::shared_ptr<Pos> && e, HintFmt hint, bool frame)
{
err.traces.push_front(Trace { .pos = std::move(e), .hint = hint, .frame = frame });
}
@ -36,7 +36,7 @@ const std::string & BaseError::calcWhat() const
std::optional<std::string> ErrorInfo::programName = std::nullopt;
std::ostream & operator <<(std::ostream & os, const hintformat & hf)
std::ostream & operator <<(std::ostream & os, const HintFmt & hf)
{
return os << hf.str();
}

20
src/libutil/error.hh
View file

@ -63,7 +63,7 @@ void printCodeLines(std::ostream & out,
struct Trace {
std::shared_ptr<Pos> pos;
hintformat hint;
HintFmt hint;
bool frame;
};
@ -74,7 +74,7 @@ inline bool operator>=(const Trace& lhs, const Trace& rhs);
struct ErrorInfo {
Verbosity level;
hintformat msg;
HintFmt msg;
std::shared_ptr<Pos> pos;
std::list<Trace> traces;
@ -113,20 +113,20 @@ public:
template<typename... Args>
BaseError(unsigned int status, const Args & ... args)
: err { .level = lvlError, .msg = hintfmt(args...), .status = status }
: err { .level = lvlError, .msg = HintFmt(args...), .status = status }
{ }
template<typename... Args>
explicit BaseError(const std::string & fs, const Args & ... args)
: err { .level = lvlError, .msg = hintfmt(fs, args...) }
: err { .level = lvlError, .msg = HintFmt(fs, args...) }
{ }
template<typename... Args>
BaseError(const Suggestions & sug, const Args & ... args)
: err { .level = lvlError, .msg = hintfmt(args...), .suggestions = sug }
: err { .level = lvlError, .msg = HintFmt(args...), .suggestions = sug }
{ }
BaseError(hintformat hint)
BaseError(HintFmt hint)
: err { .level = lvlError, .msg = hint }
{ }
@ -159,10 +159,10 @@ public:
template<typename... Args>
void addTrace(std::shared_ptr<Pos> && e, std::string_view fs, const Args & ... args)
{
addTrace(std::move(e), hintfmt(std::string(fs), args...));
addTrace(std::move(e), HintFmt(std::string(fs), args...));
}
void addTrace(std::shared_ptr<Pos> && e, hintformat hint, bool frame = false);
void addTrace(std::shared_ptr<Pos> && e, HintFmt hint, bool frame = false);
bool hasTrace() const { return !err.traces.empty(); }
@ -190,8 +190,8 @@ public:
: Error("")
{
errNo = errNo_;
auto hf = hintfmt(args...);
err.msg = hintfmt("%1%: %2%", normaltxt(hf.str()), strerror(errNo));
auto hf = HintFmt(args...);
err.msg = HintFmt("%1%: %2%", Uncolored(hf.str()), strerror(errNo));
}
template<typename... Args>

162
src/libutil/fmt.hh
View file

@ -8,37 +8,64 @@
namespace nix {
namespace {
/**
* Inherit some names from other namespaces for convenience.
*/
using boost::format;
/**
* A variadic template that does nothing. Useful to call a function
* for all variadic arguments but ignoring the result.
*/
struct nop { template<typename... T> nop(T...) {} };
/**
* A helper for formatting strings. ‘fmt(format, a_0, ..., a_n)’ is
* equivalent to ‘boost::format(format) % a_0 % ... %
* ... a_n’. However, ‘fmt(s)’ is equivalent to ‘s’ (so no %-expansion
* takes place).
* A helper for writing `boost::format` expressions.
*
* These are equivalent:
*
* ```
* formatHelper(formatter, a_0, ..., a_n)
* formatter % a_0 % ... % a_n
* ```
*
* With a single argument, `formatHelper(s)` is a no-op.
*/
template<class F>
inline void formatHelper(F & f)
{
}
{ }
template<class F, typename T, typename... Args>
inline void formatHelper(F & f, const T & x, const Args & ... args)
{
// Interpolate one argument and then recurse.
formatHelper(f % x, args...);
}
/**
* Set the correct exceptions for `fmt`.
*/
void setExceptions(boost::format & fmt)
{
fmt.exceptions(
boost::io::all_error_bits ^
boost::io::too_many_args_bit ^
boost::io::too_few_args_bit);
}
}
/**
* A helper for writing a `boost::format` expression to a string.
*
* These are (roughly) equivalent:
*
* ```
* fmt(formatString, a_0, ..., a_n)
* (boost::format(formatString) % a_0 % ... % a_n).str()
* ```
*
* However, when called with a single argument, the string is returned
* unchanged.
*
* If you write code like this:
*
* ```
* std::cout << boost::format(stringFromUserInput) << std::endl;
* ```
*
* And `stringFromUserInput` contains formatting placeholders like `%s`, then
* the code will crash at runtime. `fmt` helps you avoid this pitfall.
*/
inline std::string fmt(const std::string & s)
{
return s;
@ -53,66 +80,96 @@ template<typename... Args>
inline std::string fmt(const std::string & fs, const Args & ... args)
{
boost::format f(fs);
f.exceptions(boost::io::all_error_bits ^ boost::io::too_many_args_bit);
setExceptions(f);
formatHelper(f, args...);
return f.str();
}
// format function for hints in errors. same as fmt, except templated values
// are always in magenta.
/**
* Values wrapped in this struct are printed in magenta.
*
* By default, arguments to `HintFmt` are printed in magenta. To avoid this,
* either wrap the argument in `Uncolored` or add a specialization of
* `HintFmt::operator%`.
*/
template <class T>
struct magentatxt
struct Magenta
{
magentatxt(const T &s) : value(s) {}
Magenta(const T &s) : value(s) {}
const T & value;
};
template <class T>
std::ostream & operator<<(std::ostream & out, const magentatxt<T> & y)
std::ostream & operator<<(std::ostream & out, const Magenta<T> & y)
{
return out << ANSI_WARNING << y.value << ANSI_NORMAL;
}
/**
* Values wrapped in this class are printed without coloring.
*
* By default, arguments to `HintFmt` are printed in magenta (see `Magenta`).
*/
template <class T>
struct normaltxt
struct Uncolored
{
normaltxt(const T & s) : value(s) {}
Uncolored(const T & s) : value(s) {}
const T & value;
};
template <class T>
std::ostream & operator<<(std::ostream & out, const normaltxt<T> & y)
std::ostream & operator<<(std::ostream & out, const Uncolored<T> & y)
{
return out << ANSI_NORMAL << y.value;
}
class hintformat
/**
* A wrapper around `boost::format` which colors interpolated arguments in
* magenta by default.
*/
class HintFmt
{
public:
hintformat(const std::string & format) : fmt(format)
{
fmt.exceptions(boost::io::all_error_bits ^
boost::io::too_many_args_bit ^
boost::io::too_few_args_bit);
}
private:
boost::format fmt;
hintformat(const hintformat & hf)
public:
/**
* Format the given string literally, without interpolating format
* placeholders.
*/
HintFmt(const std::string & literal)
: HintFmt("%s", Uncolored(literal))
{ }
/**
* Interpolate the given arguments into the format string.
*/
template<typename... Args>
HintFmt(const std::string & format, const Args & ... args)
: HintFmt(boost::format(format), args...)
{ }
HintFmt(const HintFmt & hf)
: fmt(hf.fmt)
{ }
hintformat(format && fmt)
template<typename... Args>
HintFmt(boost::format && fmt, const Args & ... args)
: fmt(std::move(fmt))
{ }
{
setExceptions(fmt);
formatHelper(*this, args...);
}
template<class T>
hintformat & operator%(const T & value)
HintFmt & operator%(const T & value)
{
fmt % magentatxt(value);
fmt % Magenta(value);
return *this;
}
template<class T>
hintformat & operator%(const normaltxt<T> & value)
HintFmt & operator%(const Uncolored<T> & value)
{
fmt % value.value;
return *this;
@ -122,25 +179,8 @@ public:
{
return fmt.str();
}
private:
format fmt;
};
std::ostream & operator<<(std::ostream & os, const hintformat & hf);
template<typename... Args>
inline hintformat hintfmt(const std::string & fs, const Args & ... args)
{
hintformat f(fs);
formatHelper(f, args...);
return f;
}
inline hintformat hintfmt(const std::string & plain_string)
{
// we won't be receiving any args in this case, so just print the original string
return hintfmt("%s", normaltxt(plain_string));
}
std::ostream & operator<<(std::ostream & os, const HintFmt & hf);
}

11
src/libutil/logging.hh
View file

@ -118,6 +118,17 @@ public:
{ }
};
/**
* A variadic template that does nothing.
*
* Useful to call a function with each argument in a parameter pack.
*/
struct nop
{
template<typename... T> nop(T...)
{ }
};
ActivityId getCurActivity();
void setCurActivity(const ActivityId activityId);

4
src/libutil/serialise.cc
View file

@ -444,7 +444,7 @@ Error readError(Source & source)
auto msg = readString(source);
ErrorInfo info {
.level = level,
.msg = hintfmt(msg),
.msg = HintFmt(msg),
};
auto havePos = readNum<size_t>(source);
assert(havePos == 0);
@ -453,7 +453,7 @@ Error readError(Source & source)
havePos = readNum<size_t>(source);
assert(havePos == 0);
info.traces.push_back(Trace {
.hint = hintfmt(readString(source))
.hint = HintFmt(readString(source))
});
}
return Error(std::move(info));

2
src/libutil/util.cc
View file

@ -1872,7 +1872,7 @@ void setStackSize(rlim_t stackSize)
if (setrlimit(RLIMIT_STACK, &limit) != 0) {
logger->log(
lvlError,
hintfmt(
HintFmt(
"Failed to increase stack size from %1% to %2% (maximum allowed stack size: %3%): %4%",
savedStackSize,
stackSize,

2
src/nix/daemon.cc
View file

@ -376,7 +376,7 @@ static void daemonLoop(std::optional<TrustedFlag> forceTrustClientOpt)
} catch (Error & error) {
auto ei = error.info();
// FIXME: add to trace?
ei.msg = hintfmt("error processing connection: %1%", ei.msg.str());
ei.msg = HintFmt("error processing connection: %1%", ei.msg.str());
logError(ei);
}
}

2
src/nix/eval.cc
View file

@ -98,7 +98,7 @@ struct CmdEval : MixJSON, InstallableValueCommand, MixReadOnlyOption
} catch (Error & e) {
e.addTrace(
state->positions[attr.pos],
hintfmt("while evaluating the attribute '%s'", name));
HintFmt("while evaluating the attribute '%s'", name));
throw;
}
}

18
src/nix/flake.cc
View file

@ -370,7 +370,7 @@ struct CmdFlakeCheck : FlakeCommand
return storePath;
}
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the derivation '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the derivation '%s'", attrPath));
reportError(e);
}
return std::nullopt;
@ -389,7 +389,7 @@ struct CmdFlakeCheck : FlakeCommand
}
#endif
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the app definition '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the app definition '%s'", attrPath));
reportError(e);
}
};
@ -413,7 +413,7 @@ struct CmdFlakeCheck : FlakeCommand
// FIXME: if we have a 'nixpkgs' input, use it to
// evaluate the overlay.
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the overlay '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the overlay '%s'", attrPath));
reportError(e);
}
};
@ -424,7 +424,7 @@ struct CmdFlakeCheck : FlakeCommand
fmt("checking NixOS module '%s'", attrPath));
state->forceValue(v, pos);
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the NixOS module '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the NixOS module '%s'", attrPath));
reportError(e);
}
};
@ -452,7 +452,7 @@ struct CmdFlakeCheck : FlakeCommand
}
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the Hydra jobset '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the Hydra jobset '%s'", attrPath));
reportError(e);
}
};
@ -467,7 +467,7 @@ struct CmdFlakeCheck : FlakeCommand
if (!state->isDerivation(*vToplevel))
throw Error("attribute 'config.system.build.toplevel' is not a derivation");
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the NixOS configuration '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the NixOS configuration '%s'", attrPath));
reportError(e);
}
};
@ -501,7 +501,7 @@ struct CmdFlakeCheck : FlakeCommand
throw Error("template '%s' has unsupported attribute '%s'", attrPath, name);
}
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the template '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the template '%s'", attrPath));
reportError(e);
}
};
@ -515,7 +515,7 @@ struct CmdFlakeCheck : FlakeCommand
throw Error("bundler must be a function");
// TODO: check types of inputs/outputs?
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking the template '%s'", attrPath));
e.addTrace(resolve(pos), HintFmt("while checking the template '%s'", attrPath));
reportError(e);
}
};
@ -735,7 +735,7 @@ struct CmdFlakeCheck : FlakeCommand
warn("unknown flake output '%s'", name);
} catch (Error & e) {
e.addTrace(resolve(pos), hintfmt("while checking flake output '%s'", name));
e.addTrace(resolve(pos), HintFmt("while checking flake output '%s'", name));
reportError(e);
}
});

654
tests/unit/libexpr/error_traces.cc
View file

File diff suppressed because it is too large Load diff

36
tests/unit/libutil/logging.cc
View file

@ -43,7 +43,7 @@ namespace nix {
makeJSONLogger(*logger)->logEI({
.name = "error name",
.msg = hintfmt("this hint has %1% templated %2%!!",
.msg = HintFmt("this hint has %1% templated %2%!!",
"yellow",
"values"),
.errPos = Pos(foFile, problem_file, 02, 13)
@ -63,7 +63,7 @@ namespace nix {
throw TestError(e.info());
} catch (Error &e) {
ErrorInfo ei = e.info();
ei.msg = hintfmt("%s; subsequent error message.", normaltxt(e.info().msg.str()));
ei.msg = HintFmt("%s; subsequent error message.", Uncolored(e.info().msg.str()));
testing::internal::CaptureStderr();
logger->logEI(ei);
@ -177,7 +177,7 @@ namespace nix {
logError({
.name = "error name",
.msg = hintfmt("this hint has %1% templated %2%!!",
.msg = HintFmt("this hint has %1% templated %2%!!",
"yellow",
"values"),
.errPos = Pos(foString, problem_file, 02, 13),
@ -194,7 +194,7 @@ namespace nix {
logError({
.name = "error name",
.msg = hintfmt("this hint has %1% templated %2%!!",
.msg = HintFmt("this hint has %1% templated %2%!!",
"yellow",
"values"),
.errPos = Pos(foFile, problem_file, 02, 13)
@ -209,7 +209,7 @@ namespace nix {
logError({
.name = "error name",
.msg = hintfmt("hint %1%", "only"),
.msg = HintFmt("hint %1%", "only"),
});
auto str = testing::internal::GetCapturedStderr();
@ -226,7 +226,7 @@ namespace nix {
logWarning({
.name = "name",
.msg = hintfmt("there was a %1%", "warning"),
.msg = HintFmt("there was a %1%", "warning"),
});
auto str = testing::internal::GetCapturedStderr();
@ -242,7 +242,7 @@ namespace nix {
logWarning({
.name = "warning name",
.msg = hintfmt("this hint has %1% templated %2%!!",
.msg = HintFmt("this hint has %1% templated %2%!!",
"yellow",
"values"),
.errPos = Pos(foStdin, problem_file, 2, 13),
@ -265,7 +265,7 @@ namespace nix {
auto e = AssertionError(ErrorInfo {
.name = "wat",
.msg = hintfmt("it has been %1% days since our last error", "zero"),
.msg = HintFmt("it has been %1% days since our last error", "zero"),
.errPos = Pos(foString, problem_file, 2, 13),
});
@ -291,7 +291,7 @@ namespace nix {
auto e = AssertionError(ErrorInfo {
.name = "wat",
.msg = hintfmt("it has been %1% days since our last error", "zero"),
.msg = HintFmt("it has been %1% days since our last error", "zero"),
.errPos = Pos(foString, problem_file, 2, 13),
});
@ -311,39 +311,39 @@ namespace nix {
/* ----------------------------------------------------------------------------
* hintfmt
* HintFmt
* --------------------------------------------------------------------------*/
TEST(hintfmt, percentStringWithoutArgs) {
TEST(HintFmt, percentStringWithoutArgs) {
const char *teststr = "this is 100%s correct!";
ASSERT_STREQ(
hintfmt(teststr).str().c_str(),
HintFmt(teststr).str().c_str(),
teststr);
}
TEST(hintfmt, fmtToHintfmt) {
TEST(HintFmt, fmtToHintfmt) {
ASSERT_STREQ(
hintfmt(fmt("the color of this this text is %1%", "not yellow")).str().c_str(),
HintFmt(fmt("the color of this this text is %1%", "not yellow")).str().c_str(),
"the color of this this text is not yellow");
}
TEST(hintfmt, tooFewArguments) {
TEST(HintFmt, tooFewArguments) {
ASSERT_STREQ(
hintfmt("only one arg %1% %2%", "fulfilled").str().c_str(),
HintFmt("only one arg %1% %2%", "fulfilled").str().c_str(),
"only one arg " ANSI_WARNING "fulfilled" ANSI_NORMAL " ");
}
TEST(hintfmt, tooManyArguments) {
TEST(HintFmt, tooManyArguments) {
ASSERT_STREQ(
hintfmt("what about this %1% %2%", "%3%", "one", "two").str().c_str(),
HintFmt("what about this %1% %2%", "%3%", "one", "two").str().c_str(),
"what about this " ANSI_WARNING "%3%" ANSI_NORMAL " " ANSI_YELLOW "one" ANSI_NORMAL);
}