Make File contents optional

Add lexy::nullopt support to String and List nodes

3 files changed, 22 insertions, 1 deletions

diff --git a/include/openvic-dataloader/v2script/AbstractSyntaxTree.hpp b/include/openvic-dataloader/v2script/AbstractSyntaxTree.hpp
index 8e39bd9..8ff910f 100644
--- a/include/openvic-dataloader/v2script/AbstractSyntaxTree.hpp
+++ b/include/openvic-dataloader/v2script/AbstractSyntaxTree.hpp
@@ -14,6 +14,10 @@
 #include <openvic-dataloader/detail/SelfType.hpp>
 #include <openvic-dataloader/detail/TypeName.hpp>
 
+namespace lexy {
+	struct nullopt;
+}
+
 namespace ovdl::v2script {
 	class Parser;
 }
@@ -161,7 +165,9 @@ namespace ovdl::v2script::ast {
 
 	struct AbstractStringNode : public Node {
 		std::string _name;
+		AbstractStringNode();
 		AbstractStringNode(std::string&& name);
+		AbstractStringNode(NodeLocation location);
 		AbstractStringNode(NodeLocation location, std::string&& name);
 		OVDL_TYPE_DEFINE_SELF;
 		OVDL_RT_TYPE_DEF;
@@ -172,8 +178,12 @@ namespace ovdl::v2script::ast {
 
 #define OVDL_AST_STRING_NODE(NAME)                       \
 	struct NAME final : public AbstractStringNode {      \
+		NAME();                                          \
 		NAME(std::string&& name);                        \
+		NAME(lexy::nullopt);                             \
+		NAME(NodeLocation location);                     \
 		NAME(NodeLocation location, std::string&& name); \
+		NAME(NodeLocation location, lexy::nullopt);      \
 		OVDL_TYPE_DEFINE_SELF;                           \
 		OVDL_RT_TYPE_DEF;                                \
 		OVDL_PRINT_FUNC_DEF;                             \
@@ -219,7 +229,9 @@ namespace ovdl::v2script::ast {
 #define OVDL_AST_LIST_NODE(NAME)                                                                       \
 	struct NAME final : public AbstractListNode {                                                      \
 		NAME(const std::vector<NodePtr>& statements = std::vector<NodePtr> {});                        \
+		NAME(lexy::nullopt);                                                                           \
 		NAME(NodeLocation location, const std::vector<NodePtr>& statements = std::vector<NodePtr> {}); \
+		NAME(NodeLocation location, lexy::nullopt);                                                    \
 		OVDL_TYPE_DEFINE_SELF;                                                                         \
 		OVDL_RT_TYPE_DEF;                                                                              \
 		OVDL_PRINT_FUNC_DEF;                                                                           \
diff --git a/src/openvic-dataloader/v2script/AbstractSyntaxTree.cpp b/src/openvic-dataloader/v2script/AbstractSyntaxTree.cpp
index 8dc1800..c7a325b 100644
--- a/src/openvic-dataloader/v2script/AbstractSyntaxTree.cpp
+++ b/src/openvic-dataloader/v2script/AbstractSyntaxTree.cpp
@@ -9,6 +9,7 @@
 
 #include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>
 
+#include <lexy/dsl/option.hpp>
 #include <lexy/input_location.hpp>
 
 using namespace ovdl::v2script::ast;
@@ -21,8 +22,10 @@ void ovdl::v2script::ast::copy_into_node_ptr_vector(const std::vector<NodePtr>&
 	}
 }
 
+AbstractStringNode::AbstractStringNode() : Node({}) {}
 AbstractStringNode::AbstractStringNode(NodeLocation location, std::string&& name) : Node(location),
 																					_name(std::move(name)) {}
+AbstractStringNode::AbstractStringNode(NodeLocation location) : Node(location) {}
 AbstractStringNode::AbstractStringNode(std::string&& name) : AbstractStringNode({}, std::move(name)) {}
 
 std::ostream& AbstractStringNode::print(std::ostream& stream, size_t indent) const {
@@ -30,8 +33,12 @@ std::ostream& AbstractStringNode::print(std::ostream& stream, size_t indent) con
 }
 
 #define OVDL_AST_STRING_NODE_DEF(NAME, ...)                                                                  \
+	NAME::NAME() : AbstractStringNode() {}                                                                   \
 	NAME::NAME(std::string&& name) : AbstractStringNode(std::move(name)) {}                                  \
+	NAME::NAME(lexy::nullopt) : AbstractStringNode() {}                                                      \
+	NAME::NAME(NodeLocation location) : AbstractStringNode(location) {}                                      \
 	NAME::NAME(NodeLocation location, std::string&& name) : AbstractStringNode(location, std::move(name)) {} \
+	NAME::NAME(NodeLocation location, lexy::nullopt) : AbstractStringNode(location, {}) {}                   \
 	std::ostream& NAME::print(std::ostream& stream, size_t indent) const __VA_ARGS__
 
 OVDL_AST_STRING_NODE_DEF(IdentifierNode, {
@@ -124,7 +131,9 @@ std::ostream& AbstractListNode::print(std::ostream& stream, size_t indent) const
 
 #define OVDL_AST_LIST_NODE_DEF(NAME, ...)                                                                                 \
 	NAME::NAME(const std::vector<NodePtr>& statements) : AbstractListNode(statements) {}                                  \
+	NAME::NAME(lexy::nullopt) : AbstractListNode() {}                                                                     \
 	NAME::NAME(NodeLocation location, const std::vector<NodePtr>& statements) : AbstractListNode(location, statements) {} \
+	NAME::NAME(NodeLocation location, lexy::nullopt) : AbstractListNode(location, {}) {}                                  \
 	std::ostream& NAME::print(std::ostream& stream, size_t indent) const __VA_ARGS__
 
 OVDL_AST_LIST_NODE_DEF(FileNode, {
diff --git a/src/openvic-dataloader/v2script/SimpleGrammar.hpp b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
index a065c7f..9bddabd 100644
--- a/src/openvic-dataloader/v2script/SimpleGrammar.hpp
+++ b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
@@ -183,7 +183,7 @@ namespace ovdl::v2script::grammar {
 		// Allow arbitrary spaces between individual tokens.
 		static constexpr auto whitespace = whitespace_specifier | comment_specifier;
 
-		static constexpr auto rule = lexy::dsl::position + lexy::dsl::terminator(lexy::dsl::eof).list(lexy::dsl::p<AssignmentStatement<Options>>);
+		static constexpr auto rule = lexy::dsl::position + lexy::dsl::terminator(lexy::dsl::eof).opt_list(lexy::dsl::p<AssignmentStatement<Options>>);
 
 		static constexpr auto value = lexy::as_list<std::vector<ast::NodePtr>> >> lexy::new_<ast::FileNode, ast::NodePtr>;
 	};