Rename CompoundDataVariant -> AggregateDataVariant

src/language/ASTNodeDataVariant.hpp

@@ -7,12 +7,12 @@
 
 #include <PugsAssert.hpp>
 
-class CompoundDataVariant;
+class AggregateDataVariant;
 
 using ASTNodeDataVariant =
-  std::variant<std::monostate, bool, uint64_t, int64_t, double, std::string, CompoundDataVariant>;
+  std::variant<std::monostate, bool, uint64_t, int64_t, double, std::string, AggregateDataVariant>;
 
-class CompoundDataVariant
+class AggregateDataVariant
 {
  private:
   std::vector<ASTNodeDataVariant> m_data_vector;
@@ -48,10 +48,41 @@ class CompoundDataVariant
 
  public:
   friend std::ostream&
-  operator<<(std::ostream& os, const CompoundDataVariant& compound)
+  operator<<(std::ostream& os, const AggregateDataVariant& compound)
   {
     return compound._print(os);
   }
+
+  PUGS_INLINE
+  size_t
+  size() const
+  {
+    return m_data_vector.size();
+  }
+
+  PUGS_INLINE
+  ASTNodeDataVariant& operator[](size_t i)
+  {
+    Assert(i < m_data_vector.size());
+    return m_data_vector[i];
+  }
+
+  PUGS_INLINE
+  const ASTNodeDataVariant& operator[](size_t i) const
+  {
+    Assert(i < m_data_vector.size());
+    return m_data_vector[i];
+  }
+
+  AggregateDataVariant& operator=(const AggregateDataVariant&) = default;
+  AggregateDataVariant& operator=(AggregateDataVariant&&) = default;
+
+  AggregateDataVariant(size_t size) : m_data_vector(size) {}
+
+  AggregateDataVariant(const AggregateDataVariant&) = default;
+  AggregateDataVariant(AggregateDataVariant&&)      = default;
+
+  AggregateDataVariant() = default;
 };
 
 #endif   // AST_NODE_DATA_VARIANT_HPP