diff options
Diffstat (limited to 'third_party/nix/src/libexpr/attr-set.hh')
| -rw-r--r-- | third_party/nix/src/libexpr/attr-set.hh | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/third_party/nix/src/libexpr/attr-set.hh b/third_party/nix/src/libexpr/attr-set.hh index 6397008517..c02f3930fd 100644 --- a/third_party/nix/src/libexpr/attr-set.hh +++ b/third_party/nix/src/libexpr/attr-set.hh @@ -25,15 +25,17 @@ using AttributeMap = absl::btree_map<Symbol, Attr>; class Bindings { public: - typedef AttributeMap::iterator iterator; + using iterator = AttributeMap::iterator; + using const_iterator = AttributeMap::const_iterator; // Allocate a new attribute set that is visible to the garbage // collector. - static Bindings* NewGC(size_t capacity = 0); + 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 Bindings* Merge(const Bindings& lhs, const Bindings& rhs); + static std::unique_ptr<Bindings> Merge(const Bindings& lhs, + const Bindings& rhs); // Return the number of contained elements. size_t size() const; @@ -44,11 +46,18 @@ class Bindings { // 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; // Returns the elements of the attribute set as a vector, sorted // lexicographically by keys. |