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#include "lix/libexpr/attr-set.hh"
#include "lix/libexpr/eval.hh"
#include "lix/libexpr/gc-alloc.hh"

#include <algorithm>


namespace nix {

Bindings Bindings::EMPTY{};

/* Allocate a new array of attributes for an attribute set with a specific
   capacity. The space is implicitly reserved after the Bindings
   structure. */
Bindings * EvalMemory::allocBindings(size_t capacity)
{
    if (capacity == 0)
        return &Bindings::EMPTY;
    if (capacity > std::numeric_limits<Bindings::Size>::max())
        throw Error("attribute set of size %d is too big", capacity);
    stats.nrAttrsets++;
    stats.nrAttrsInAttrsets += capacity;
    return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings();
}

void BindingsBuilder::insert(std::string_view name, Value value, PosIdx pos)
{
    return insert(symbols.create(name), value, pos);
}

void Bindings::sort()
{
    if (size_) std::sort(begin(), end());
}
}