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Diffstat (limited to 'third_party/nix/src/libexpr/attr-set.hh')
-rw-r--r-- | third_party/nix/src/libexpr/attr-set.hh | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/third_party/nix/src/libexpr/attr-set.hh b/third_party/nix/src/libexpr/attr-set.hh deleted file mode 100644 index 5d77e0907cd6..000000000000 --- a/third_party/nix/src/libexpr/attr-set.hh +++ /dev/null @@ -1,69 +0,0 @@ -// This file implements the underlying structure of Nix attribute sets. -#pragma once - -#include <absl/container/btree_map.h> - -#include "libexpr/nixexpr.hh" -#include "libexpr/symbol-table.hh" -#include "libutil/types.hh" - -namespace nix { // TODO(tazjin): ::expr - -class EvalState; -struct Value; - -/* Map one attribute name to its value. */ -struct Attr { - Symbol name; - Value* value; // TODO(tazjin): Who owns this? - Pos* pos; // TODO(tazjin): Who owns this? - Attr(Symbol name, Value* value, Pos* pos = &noPos) - : name(name), value(value), pos(pos){}; -}; - -using AttributeMap = absl::btree_map<Symbol, Attr>; - -class Bindings { - public: - using iterator = AttributeMap::iterator; - using const_iterator = AttributeMap::const_iterator; - - // Allocate a new attribute set that is visible to the garbage - // collector. - static std::unique_ptr<Bindings> New(size_t capacity = 0); - - // Create a new attribute set by merging two others. This is used to - // implement the `//` operator in Nix. - static std::unique_ptr<Bindings> Merge(const Bindings& lhs, - const Bindings& rhs); - - // Return the number of contained elements. - size_t size() const; - - // Is this attribute set empty? - bool empty(); - - // Insert, but do not replace, values in the attribute set. - void push_back(const Attr& attr); - - // Are these two attribute sets deeply equal? - // Note: Does not special-case derivations. Use state.eqValues() to check - // attrsets that may be derivations. - bool Equal(const Bindings* other, EvalState& state) const; - - // Look up a specific element of the attribute set. - iterator find(const Symbol& name); - - iterator begin(); - const_iterator cbegin() const; - iterator end(); - const_iterator cend() const; - - // oh no - friend class EvalState; - - private: - AttributeMap attributes_; -}; - -} // namespace nix |