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#include "attr-set.hh"
#include "eval.hh"
#include "gc-alloc.hh"
#include <algorithm>
namespace nix {
/* Allocate a new array of attributes for an attribute set with a specific
capacity. The space is implicitly reserved after the Bindings
structure. */
Bindings * EvalState::allocBindings(size_t capacity)
{
if (capacity == 0)
return &emptyBindings;
if (capacity > std::numeric_limits<Bindings::size_t>::max())
throw Error("attribute set of size %d is too big", capacity);
nrAttrsets++;
nrAttrsInAttrsets += capacity;
return new (gcAllocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity);
}
/* Create a new attribute named 'name' on an existing attribute set stored
in 'vAttrs' and return the newly allocated Value which is associated with
this attribute. */
Value * EvalState::allocAttr(Value & vAttrs, Symbol name)
{
Value * v = allocValue();
vAttrs.attrs->push_back(Attr(name, v));
return v;
}
Value * EvalState::allocAttr(Value & vAttrs, std::string_view name)
{
return allocAttr(vAttrs, symbols.create(name));
}
Value & BindingsBuilder::alloc(Symbol name, PosIdx pos)
{
auto value = state.allocValue();
bindings->push_back(Attr(name, value, pos));
return *value;
}
Value & BindingsBuilder::alloc(std::string_view name, PosIdx pos)
{
return alloc(state.symbols.create(name), pos);
}
void Bindings::sort()
{
if (size_) std::sort(begin(), end());
}
Value & Value::mkAttrs(BindingsBuilder & bindings)
{
mkAttrs(bindings.finish());
return *this;
}
}
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