Adds natspec to AST for enum definition.

libsolidity/ast/AST.h

@@ -737,7 +737,7 @@ private:
 	std::vector<ASTPointer<VariableDeclaration>> m_members;
 };
 
-class EnumDefinition: public Declaration, public ScopeOpener
+class EnumDefinition: public Declaration, public StructurallyDocumented, public ScopeOpener
 {
 public:
 	EnumDefinition(
@@ -745,9 +745,14 @@ public:
 		SourceLocation const& _location,
 		ASTPointer<ASTString> const& _name,
 		SourceLocation _nameLocation,
-		std::vector<ASTPointer<EnumValue>> _members
+		std::vector<ASTPointer<EnumValue>> _members,
+		ASTPointer<StructuredDocumentation> _documentation
 	):
-		Declaration(_id, _location, _name, std::move(_nameLocation)), m_members(std::move(_members)) {}
+		Declaration(_id, _location, _name, std::move(_nameLocation)),
+		StructurallyDocumented(std::move(_documentation)),
+		m_members(std::move(_members))
+	{}
+
 	void accept(ASTVisitor& _visitor) override;
 	void accept(ASTConstVisitor& _visitor) const override;
 

libsolidity/ast/ASTJsonExporter.cpp

@@ -384,6 +384,7 @@ bool ASTJsonExporter::visit(EnumDefinition const& _node)
 	std::vector<pair<string, Json::Value>> attributes = {
 		make_pair("name", _node.name()),
 		make_pair("nameLocation", sourceLocationToString(_node.nameLocation())),
+		make_pair("documentation", _node.documentation() ? toJson(*_node.documentation()) : Json::nullValue),
 		make_pair("members", toJson(_node.members()))
 	};
 

libsolidity/ast/ASTJsonImporter.cpp

@@ -462,7 +462,8 @@ ASTPointer<EnumDefinition> ASTJsonImporter::createEnumDefinition(Json::Value con
 		_node,
 		memberAsASTString(_node, "name"),
 		createNameSourceLocation(_node),
-		members
+		members,
+		_node["documentation"].isNull() ? nullptr : createDocumentation(member(_node, "documentation"))
 	);
 }
 

libsolidity/parsing/Parser.cpp

@@ -706,6 +706,7 @@ ASTPointer<EnumDefinition> Parser::parseEnumDefinition()
 {
 	RecursionGuard recursionGuard(*this);
 	ASTNodeFactory nodeFactory(*this);
+	ASTPointer<StructuredDocumentation> documentation = parseStructuredDocumentation();
 	expectToken(Token::Enum);
 	auto [name, nameLocation] = expectIdentifierWithLocation();
 	vector<ASTPointer<EnumValue>> members;
@@ -725,7 +726,7 @@ ASTPointer<EnumDefinition> Parser::parseEnumDefinition()
 
 	nodeFactory.markEndPosition();
 	expectToken(Token::RBrace);
-	return nodeFactory.createNode<EnumDefinition>(name, nameLocation, members);
+	return nodeFactory.createNode<EnumDefinition>(name, nameLocation, members, documentation);
 }
 
 ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(