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Remove list sorting

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Chuck 2019-09-06 09:58:34 -07:00 committed by Linus Heckemann
parent 36c00c1080
commit e1ecc2b6c1
1 changed files with 1 additions and 36 deletions
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37
nixos/modules/installer/tools/nixos-option/nixos-option.cc
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@ -1,6 +1,5 @@
#include <nix/config.h> // for nix/globals.hh's reference to SYSTEM
#include <algorithm> // for sort
#include <functional> // for function
#include <iostream> // for operator<<, basic_ostream, ostrin...
#include <iterator> // for next
@ -276,7 +275,7 @@ Value parseAndEval(EvalState * state, std::string const & expression, std::strin
void printValue(Context * ctx, Out & out, std::variant<Value, Error> maybe_value, std::string const & path);
void printUnsortedList(Context * ctx, Out & out, Value & v)
void printList(Context * ctx, Out & out, Value & v)
{
Out list_out(out, "[", "]", v.listSize());
for (unsigned int n = 0; n < v.listSize(); ++n) {
@ -285,40 +284,6 @@ void printUnsortedList(Context * ctx, Out & out, Value & v)
}
}
void printSortedList(Context * ctx, Out & out, Value & v)
{
std::vector<std::string> results;
for (unsigned int n = 0; n < v.listSize(); ++n) {
std::ostringstream buf;
Out buf_out(buf);
printValue(ctx, buf_out, *v.listElems()[n], "");
results.push_back(buf.str());
}
std::sort(results.begin(), results.end());
Out list_out(out, "[", "]", v.listSize());
for (auto const & v : results) {
list_out << v << Out::sep;
}
}
bool shouldSort(Context * ctx, Value & v)
{
// Some lists should clearly be printed in sorted order, like
// environment.systemPackages. Some clearly should not, like
// services.xserver.multitouch.buttonsMap. As a conservative heuristic, sort
// lists of derivations.
return v.listSize() > 0 && ctx->state->isDerivation(*v.listElems()[0]);
}
void printList(Context * ctx, Out & out, Value & v)
{
if (shouldSort(ctx, v)) {
printSortedList(ctx, out, v);
} else {
printUnsortedList(ctx, out, v);
}
}
void printAttrs(Context * ctx, Out & out, Value & v, std::string const & path)
{
Out attrs_out(out, "{", "}", v.attrs->size());