#include "attr-set.hh" #include "eval-inline.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 > std::numeric_limits<Bindings::size_t>::max()) throw Error("attribute set of size %d is too big", capacity); return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity); } void EvalState::mkAttrs(Value & v, size_t capacity) { if (capacity == 0) { v = vEmptySet; return; } clearValue(v); v.type = tAttrs; v.attrs = allocBindings(capacity); nrAttrsets++; nrAttrsInAttrsets += 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, const Symbol & name) { Value * v = allocValue(); vAttrs.attrs->push_back(Attr(name, v)); return v; } Value * EvalState::allocAttr(Value & vAttrs, const std::string & name) { return allocAttr(vAttrs, symbols.create(name)); } void Bindings::sort() { std::sort(begin(), end()); } }