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showTrace flag for ErrorInfo; showTrace test.

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This commit is contained in:
Ben Burdette 2020-06-25 09:23:12 -06:00
parent 9c0e1fd4f1
commit 9ab808c926
4 changed files with 61 additions and 34 deletions
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4
src/libmain/shared.cc
View file

@ -303,6 +303,7 @@ int handleExceptions(const string & programName, std::function<void()> fun)
ReceiveInterrupts receiveInterrupts; // FIXME: need better place for this
ErrorInfo::programName = baseNameOf(programName);
ErrorInfo::showTrace = settings.showTrace;
string error = ANSI_RED "error:" ANSI_NORMAL " ";
try {
@ -323,9 +324,6 @@ int handleExceptions(const string & programName, std::function<void()> fun)
printError("Try '%1% --help' for more information.", programName);
return 1;
} catch (BaseError & e) {
// TODO showTrace as argument, or have calcWhat check settings?
// if (settings.showTrace && e.prefix() != "")
// printError(e.prefix());
logError(e.info());
// TODO fix to detect non-empty trace here.
if (e.hasTrace() && !settings.showTrace)

65
src/libutil/error.cc
View file

@ -34,6 +34,7 @@ const string& BaseError::calcWhat() const
}
std::optional<string> ErrorInfo::programName = std::nullopt;
bool ErrorInfo::showTrace = false;
std::ostream& operator<<(std::ostream &os, const hintformat &hf)
{
@ -325,42 +326,44 @@ std::ostream& operator<<(std::ostream &out, const ErrorInfo &einfo)
}
// traces
for (auto iter = einfo.traces.rbegin(); iter != einfo.traces.rend(); ++iter)
{
try {
if (nl)
out << std::endl << prefix;
if (ErrorInfo::showTrace) {
for (auto iter = einfo.traces.rbegin(); iter != einfo.traces.rend(); ++iter)
{
try {
if (nl)
out << std::endl << prefix;
const string tracetitle(" show-trace output ");
const string tracetitle(" show-trace output ");
int fill = errwidth - tracetitle.length();
int lw = 0;
int rw = 0;
const int min_dashes = 3;
if (fill > min_dashes * 2) {
if (fill % 2 != 0) {
lw = fill / 2;
rw = lw + 1;
int fill = errwidth - tracetitle.length();
int lw = 0;
int rw = 0;
const int min_dashes = 3;
if (fill > min_dashes * 2) {
if (fill % 2 != 0) {
lw = fill / 2;
rw = lw + 1;
}
else
{
lw = rw = fill / 2;
}
}
else
{
lw = rw = fill / 2;
}
lw = rw = min_dashes;
out << ANSI_BLUE << std::string(lw, '-') << tracetitle << std::string(rw, '-') << std::endl << prefix;
out << iter->hint.str() << std::endl;
auto pos = *iter->pos;
printAtPos(prefix, pos, out);
nl = true;
auto loc = getCodeLines(pos);
if (loc.has_value())
printCodeLines(out, prefix, pos, *loc);
} catch(const std::bad_optional_access& e) {
out << iter->hint.str() << std::endl;
}
else
lw = rw = min_dashes;
out << ANSI_BLUE << std::string(lw, '-') << tracetitle << std::string(rw, '-') << std::endl << prefix;
out << iter->hint.str() << std::endl;
auto pos = *iter->pos;
printAtPos(prefix, pos, out);
nl = true;
auto loc = getCodeLines(pos);
if (loc.has_value())
printCodeLines(out, prefix, pos, *loc);
} catch(const std::bad_optional_access& e) {
out << iter->hint.str() << std::endl;
}
}

1
src/libutil/error.hh
View file

@ -107,6 +107,7 @@ struct ErrorInfo {
std::list<Trace> traces;
static std::optional<string> programName;
static bool showTrace;
};
std::ostream& operator<<(std::ostream &out, const ErrorInfo &einfo);

25
src/libutil/tests/logging.cc
View file

@ -251,6 +251,7 @@ namespace nix {
TEST(addTrace, showTracesWithShowTrace) {
SymbolTable testTable;
ErrorInfo::showTrace = true;
auto problem_file = testTable.create(test_file);
auto oneliner_file = testTable.create(one_liner);
@ -272,6 +273,30 @@ namespace nix {
ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- AssertionError --- error-unit-test\x1B[0m\n\x1B[34;1mat: \x1B[33;1m(2:13)\x1B[34;1m from command line argument\x1B[0m\n\na well-known problem occurred\n\n 1| previous line of code\n 2| this is the problem line of code\n | \x1B[31;1m^\x1B[0m\n 3| next line of code\n\nit has been \x1B[33;1mzero\x1B[0m days since our last error\n\x1B[34;1m--- show-trace output ---\nwhile trying to compute \x1B[33;1m42\x1B[0m\n\x1B[34;1mat: \x1B[33;1m(1:19)\x1B[34;1m from stdin\x1B[0m\n 1| this is the other problem line of code\n | \x1B[31;1m^\x1B[0m\n");
}
TEST(addTrace, hideTracesWithoutShowTrace) {
SymbolTable testTable;
ErrorInfo::showTrace = false;
auto problem_file = testTable.create(test_file);
auto oneliner_file = testTable.create(one_liner);
auto e = AssertionError(ErrorInfo {
.name = "wat",
.description = "a well-known problem occurred",
.hint = hintfmt("it has been %1% days since our last error", "zero"),
.errPos = Pos(foString, problem_file, 2, 13),
});
e.addTrace(Pos(foStdin, oneliner_file, 1, 19), "while trying to compute %1%", 42);
testing::internal::CaptureStderr();
logError(e.info());
auto str = testing::internal::GetCapturedStderr();
ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- AssertionError --- error-unit-test\x1B[0m\n\x1B[34;1mat: \x1B[33;1m(2:13)\x1B[34;1m from command line argument\x1B[0m\n\na well-known problem occurred\n\n 1| previous line of code\n 2| this is the problem line of code\n | \x1B[31;1m^\x1B[0m\n 3| next line of code\n\nit has been \x1B[33;1mzero\x1B[0m days since our last error\n");
}
/* ----------------------------------------------------------------------------
* hintfmt
* --------------------------------------------------------------------------*/