Merge pull request #15 from OpenVicProject/fix/escaping

Add ParseOptions

7 files changed, 99 insertions, 76 deletions

diff --git a/src/openvic-dataloader/v2script/DecisionGrammar.hpp b/src/openvic-dataloader/v2script/DecisionGrammar.hpp
index 93ba0f5..a1c1e3e 100644
--- a/src/openvic-dataloader/v2script/DecisionGrammar.hpp
+++ b/src/openvic-dataloader/v2script/DecisionGrammar.hpp
@@ -23,25 +23,25 @@ namespace ovdl::v2script::grammar {
 	// Macros
 	//////////////////
 // Produces <KW_NAME>_rule and <KW_NAME>_p
-#define OVDL_GRAMMAR_KEYWORD_DEFINE(KW_NAME)                                                    \
-	struct KW_NAME##_rule {                                                                     \
-		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier>); \
-		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                          \
-		static constexpr auto value = lexy::noop;                                               \
-	};                                                                                          \
+#define OVDL_GRAMMAR_KEYWORD_DEFINE(KW_NAME)                                                                        \
+	struct KW_NAME##_rule {                                                                                         \
+		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier<StringEscapeOption>>); \
+		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                                              \
+		static constexpr auto value = lexy::noop;                                                                   \
+	};                                                                                                              \
 	static constexpr auto KW_NAME##_p = lexy::dsl::p<KW_NAME##_rule>
 
 // Produces <KW_NAME>_rule and <KW_NAME>_p and <KW_NAME>_rule::flag and <KW_NAME>_rule::too_many_error
-#define OVDL_GRAMMAR_KEYWORD_FLAG_DEFINE(KW_NAME)                                               \
-	struct KW_NAME##_rule {                                                                     \
-		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier>); \
-		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                          \
-		static constexpr auto value = lexy::noop;                                               \
-		static constexpr auto flag = lexy::dsl::context_flag<struct KW_NAME##_context>;         \
-		struct too_many_error {                                                                 \
-			static constexpr auto name = "expected left side " #KW_NAME " to be found once";    \
-		};                                                                                      \
-	};                                                                                          \
+#define OVDL_GRAMMAR_KEYWORD_FLAG_DEFINE(KW_NAME)                                                                   \
+	struct KW_NAME##_rule {                                                                                         \
+		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier<StringEscapeOption>>); \
+		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                                              \
+		static constexpr auto value = lexy::noop;                                                                   \
+		static constexpr auto flag = lexy::dsl::context_flag<struct KW_NAME##_context>;                             \
+		struct too_many_error {                                                                                     \
+			static constexpr auto name = "expected left side " #KW_NAME " to be found once";                        \
+		};                                                                                                          \
+	};                                                                                                              \
 	static constexpr auto KW_NAME##_p = lexy::dsl::p<KW_NAME##_rule> >> (lexy::dsl::must(KW_NAME##_rule::flag.is_reset()).error<KW_NAME##_rule::too_many_error> + KW_NAME##_rule::flag.set())
 	//////////////////
 	// Macros
@@ -49,7 +49,7 @@ namespace ovdl::v2script::grammar {
 	struct DecisionStatement {
 		template<auto Production, typename AstNode>
 		struct _StringStatement {
-			static constexpr auto rule = Production >> (lexy::dsl::p<StringExpression> | lexy::dsl::p<Identifier>);
+			static constexpr auto rule = Production >> (lexy::dsl::p<StringExpression<StringEscapeOption>> | lexy::dsl::p<Identifier<StringEscapeOption>>);
 			static constexpr auto value = lexy::forward<ast::NodePtr>;
 		};
 		template<auto Production, typename AstNode>
@@ -72,14 +72,14 @@ namespace ovdl::v2script::grammar {
 			constexpr auto effect_statement = effect_p >> lexy::dsl::p<TriggerBlock>;
 			constexpr auto ai_will_do_statement = ai_will_do_p >> lexy::dsl::p<AiBehaviorBlock>;
 
-			return lexy::dsl::p<Identifier> >>
+			return lexy::dsl::p<Identifier<StringEscapeOption>> >>
 				   (create_flags + lexy::dsl::equal_sign +
 					   lexy::dsl::curly_bracketed.list(
 						   potential_statement |
 						   allow_statement |
 						   effect_statement |
 						   ai_will_do_statement |
-						   lexy::dsl::p<SimpleAssignmentStatement>));
+						   lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>));
 		}();
 
 		static constexpr auto value =
@@ -95,7 +95,7 @@ namespace ovdl::v2script::grammar {
 
 	struct DecisionList {
 		static constexpr auto rule =
-			LEXY_KEYWORD("political_decisions", lexy::dsl::inline_<Identifier>) >>
+			LEXY_KEYWORD("political_decisions", lexy::dsl::inline_<Identifier<StringEscapeOption>>) >>
 			(lexy::dsl::equal_sign + lexy::dsl::curly_bracketed.opt_list(lexy::dsl::p<DecisionStatement>));
 
 		static constexpr auto value =
@@ -116,7 +116,7 @@ namespace ovdl::v2script::grammar {
 		static constexpr auto rule =
 			lexy::dsl::terminator(lexy::dsl::eof).list( //
 				lexy::dsl::p<DecisionList> |			//
-				lexy::dsl::p<SimpleAssignmentStatement>);
+				lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>);
 
 		static constexpr auto value = lexy::as_list<std::vector<ast::NodePtr>> >> lexy::new_<ast::FileNode, ast::NodePtr>;
 	};
diff --git a/src/openvic-dataloader/v2script/EffectGrammar.hpp b/src/openvic-dataloader/v2script/EffectGrammar.hpp
index 9f164b2..1b85382 100644
--- a/src/openvic-dataloader/v2script/EffectGrammar.hpp
+++ b/src/openvic-dataloader/v2script/EffectGrammar.hpp
@@ -9,7 +9,7 @@
 
 namespace ovdl::v2script::grammar {
 	struct EffectStatement {
-		static constexpr auto rule = lexy::dsl::inline_<SimpleAssignmentStatement>;
+		static constexpr auto rule = lexy::dsl::inline_<SimpleAssignmentStatement<StringEscapeOption>>;
 
 		static constexpr auto value = lexy::callback<ast::NodePtr>(
 			[](auto name, auto&& initalizer) {
@@ -18,7 +18,7 @@ namespace ovdl::v2script::grammar {
 	};
 
 	struct EffectList {
-		static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SimpleAssignmentStatement>);
+		static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>);
 
 		static constexpr auto value =
 			lexy::as_list<std::vector<ast::NodePtr>> >>
diff --git a/src/openvic-dataloader/v2script/EventGrammar.hpp b/src/openvic-dataloader/v2script/EventGrammar.hpp
index 93a52bf..e6e4c02 100644
--- a/src/openvic-dataloader/v2script/EventGrammar.hpp
+++ b/src/openvic-dataloader/v2script/EventGrammar.hpp
@@ -21,25 +21,25 @@ namespace ovdl::v2script::grammar {
 	// Macros
 	//////////////////
 // Produces <KW_NAME>_rule and <KW_NAME>_p
-#define OVDL_GRAMMAR_KEYWORD_DEFINE(KW_NAME)                                                    \
-	struct KW_NAME##_rule {                                                                     \
-		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier>); \
-		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                          \
-		static constexpr auto value = lexy::noop;                                               \
-	};                                                                                          \
+#define OVDL_GRAMMAR_KEYWORD_DEFINE(KW_NAME)                                                                        \
+	struct KW_NAME##_rule {                                                                                         \
+		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier<StringEscapeOption>>); \
+		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                                              \
+		static constexpr auto value = lexy::noop;                                                                   \
+	};                                                                                                              \
 	static constexpr auto KW_NAME##_p = lexy::dsl::p<KW_NAME##_rule>
 
 // Produces <KW_NAME>_rule and <KW_NAME>_p and <KW_NAME>_rule::flag and <KW_NAME>_rule::too_many_error
-#define OVDL_GRAMMAR_KEYWORD_FLAG_DEFINE(KW_NAME)                                               \
-	struct KW_NAME##_rule {                                                                     \
-		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier>); \
-		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                          \
-		static constexpr auto value = lexy::noop;                                               \
-		static constexpr auto flag = lexy::dsl::context_flag<struct KW_NAME##_context>;         \
-		struct too_many_error {                                                                 \
-			static constexpr auto name = "expected left side " #KW_NAME " to be found once";    \
-		};                                                                                      \
-	};                                                                                          \
+#define OVDL_GRAMMAR_KEYWORD_FLAG_DEFINE(KW_NAME)                                                                   \
+	struct KW_NAME##_rule {                                                                                         \
+		static constexpr auto keyword = LEXY_KEYWORD(#KW_NAME, lexy::dsl::inline_<Identifier<StringEscapeOption>>); \
+		static constexpr auto rule = keyword >> lexy::dsl::equal_sign;                                              \
+		static constexpr auto value = lexy::noop;                                                                   \
+		static constexpr auto flag = lexy::dsl::context_flag<struct KW_NAME##_context>;                             \
+		struct too_many_error {                                                                                     \
+			static constexpr auto name = "expected left side " #KW_NAME " to be found once";                        \
+		};                                                                                                          \
+	};                                                                                                              \
 	static constexpr auto KW_NAME##_p = lexy::dsl::p<KW_NAME##_rule> >> (lexy::dsl::must(KW_NAME##_rule::flag.is_reset()).error<KW_NAME##_rule::too_many_error> + KW_NAME##_rule::flag.set())
 	//////////////////
 	// Macros
@@ -52,7 +52,7 @@ namespace ovdl::v2script::grammar {
 		OVDL_GRAMMAR_KEYWORD_DEFINE(months);
 
 		struct MonthValue {
-			static constexpr auto rule = lexy::dsl::inline_<Identifier>;
+			static constexpr auto rule = lexy::dsl::inline_<Identifier<StringEscapeOption>>;
 			static constexpr auto value = lexy::as_string<std::string> | lexy::new_<ast::MonthNode, ast::NodePtr>;
 		};
 
@@ -70,7 +70,7 @@ namespace ovdl::v2script::grammar {
 
 	template<auto Production, typename AstNode>
 	struct _StringStatement {
-		static constexpr auto rule = Production >> (lexy::dsl::p<StringExpression> | lexy::dsl::p<Identifier>);
+		static constexpr auto rule = Production >> (lexy::dsl::p<StringExpression<StringEscapeOption>> | lexy::dsl::p<Identifier<StringEscapeOption>>);
 		static constexpr auto value =
 			lexy::callback<ast::NodePtr>(
 				[](auto&& value) {
@@ -116,7 +116,7 @@ namespace ovdl::v2script::grammar {
 		OVDL_GRAMMAR_KEYWORD_DEFINE(option);
 
 		static constexpr auto rule = [] {
-			constexpr auto symbol_value = lexy::dsl::symbol<event_symbols>(lexy::dsl::inline_<Identifier>);
+			constexpr auto symbol_value = lexy::dsl::symbol<event_symbols>(lexy::dsl::inline_<Identifier<StringEscapeOption>>);
 
 			constexpr auto create_flags =
 				id_rule::flag.create() +
@@ -153,7 +153,7 @@ namespace ovdl::v2script::grammar {
 						   mean_time_to_happen_statement |
 						   trigger_statement |
 						   option_statement |
-						   lexy::dsl::p<SimpleAssignmentStatement>));
+						   lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>));
 		}();
 
 		static constexpr auto value =
@@ -171,7 +171,7 @@ namespace ovdl::v2script::grammar {
 		// Allow arbitrary spaces between individual tokens.
 		static constexpr auto whitespace = whitespace_specifier | comment_specifier;
 
-		static constexpr auto rule = lexy::dsl::terminator(lexy::dsl::eof).list(lexy::dsl::p<EventStatement> | lexy::dsl::p<SimpleAssignmentStatement>);
+		static constexpr auto rule = lexy::dsl::terminator(lexy::dsl::eof).list(lexy::dsl::p<EventStatement> | lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>);
 
 		static constexpr auto value = lexy::as_list<std::vector<ast::NodePtr>> >> lexy::new_<ast::FileNode, ast::NodePtr>;
 	};
diff --git a/src/openvic-dataloader/v2script/ModifierGrammar.hpp b/src/openvic-dataloader/v2script/ModifierGrammar.hpp
index 632cfd5..96e928c 100644
--- a/src/openvic-dataloader/v2script/ModifierGrammar.hpp
+++ b/src/openvic-dataloader/v2script/ModifierGrammar.hpp
@@ -8,11 +8,11 @@
 #include "TriggerGrammar.hpp"
 
 namespace ovdl::v2script::grammar {
-	constexpr auto modifier_keyword = LEXY_KEYWORD("modifier", lexy::dsl::inline_<Identifier>);
-	constexpr auto factor_keyword = LEXY_KEYWORD("factor", lexy::dsl::inline_<Identifier>);
+	constexpr auto modifier_keyword = LEXY_KEYWORD("modifier", lexy::dsl::inline_<Identifier<StringEscapeOption>>);
+	constexpr auto factor_keyword = LEXY_KEYWORD("factor", lexy::dsl::inline_<Identifier<StringEscapeOption>>);
 
 	struct FactorStatement {
-		static constexpr auto rule = factor_keyword >> lexy::dsl::equal_sign + lexy::dsl::inline_<Identifier>;
+		static constexpr auto rule = factor_keyword >> lexy::dsl::equal_sign + lexy::dsl::inline_<Identifier<StringEscapeOption>>;
 		static constexpr auto value = lexy::as_string<std::string> | lexy::new_<ast::FactorNode, ast::NodePtr>;
 	};
 
diff --git a/src/openvic-dataloader/v2script/Parser.cpp b/src/openvic-dataloader/v2script/Parser.cpp
index 0ff7612..9e74e32 100644
--- a/src/openvic-dataloader/v2script/Parser.cpp
+++ b/src/openvic-dataloader/v2script/Parser.cpp
@@ -175,7 +175,7 @@ bool Parser::simple_parse() {
 		_warnings.push_back(warnings::make_utf8_warning(_file_path));
 	}
 
-	auto errors = _buffer_handler->parse<grammar::File>(ovdl::detail::ReporError.path(_file_path).to(detail::OStreamOutputIterator { _error_stream }));
+	auto errors = _buffer_handler->parse<grammar::File<grammar::NoStringEscapeOption>>(ovdl::detail::ReporError.path(_file_path).to(detail::OStreamOutputIterator { _error_stream }));
 	if (errors) {
 		_errors.reserve(errors->size());
 		for (auto& err : errors.value()) {
diff --git a/src/openvic-dataloader/v2script/SimpleGrammar.hpp b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
index d478bdf..2679598 100644
--- a/src/openvic-dataloader/v2script/SimpleGrammar.hpp
+++ b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
@@ -22,7 +22,18 @@
  * DAT-643
  */
 namespace ovdl::v2script::grammar {
+	struct ParseOptions {
+		/// @brief Makes string parsing avoid string escapes
+		bool NoStringEscape;
+	};
+
+	static constexpr ParseOptions NoStringEscapeOption = ParseOptions { true };
+	static constexpr ParseOptions StringEscapeOption = ParseOptions { false };
+
+	template<ParseOptions Options>
 	struct StatementListBlock;
+	template<ParseOptions Options>
+	struct AssignmentStatement;
 
 	/* REQUIREMENTS: DAT-630 */
 	static constexpr auto whitespace_specifier = lexy::dsl::ascii::blank / lexy::dsl::ascii::newline;
@@ -45,6 +56,18 @@ namespace ovdl::v2script::grammar {
 
 	static constexpr auto data_char_class = LEXY_CHAR_CLASS("DataSpecifier", data_specifier);
 
+	static constexpr auto escaped_symbols = lexy::symbol_table<char> //
+												.map<'"'>('"')
+												.map<'\''>('\'')
+												.map<'\\'>('\\')
+												.map<'/'>('/')
+												.map<'b'>('\b')
+												.map<'f'>('\f')
+												.map<'n'>('\n')
+												.map<'r'>('\r')
+												.map<'t'>('\t');
+
+	template<ParseOptions Options>
 	struct Identifier {
 		static constexpr auto rule = lexy::dsl::identifier(data_char_class);
 		static constexpr auto value = lexy::callback<ast::NodePtr>(
@@ -58,27 +81,22 @@ namespace ovdl::v2script::grammar {
 	 * DAT-633
 	 * DAT-634
 	 */
+	template<ParseOptions Options>
 	struct StringExpression {
-		static constexpr auto escaped_symbols = lexy::symbol_table<char> //
-													.map<'"'>('"')
-													.map<'\''>('\'')
-													.map<'\\'>('\\')
-													.map<'/'>('/')
-													.map<'b'>('\b')
-													.map<'f'>('\f')
-													.map<'n'>('\n')
-													.map<'r'>('\r')
-													.map<'t'>('\t');
 		static constexpr auto rule = [] {
 			// Arbitrary code points that aren't control characters.
 			auto c = ovdl::detail::lexydsl::make_range<0x20, 0xFF>() - lexy::dsl::ascii::control;
 
-			// Escape sequences start with a backlash.
-			// They either map one of the symbols,
-			// or a Unicode code point of the form uXXXX.
-			auto escape = lexy::dsl::backslash_escape //
-							  .symbol<escaped_symbols>();
-			return lexy::dsl::delimited(lexy::dsl::position(lexy::dsl::lit_b<'"'>))(c, escape);
+			if constexpr (Options.NoStringEscape) {
+				return lexy::dsl::delimited(lexy::dsl::position(lexy::dsl::lit_b<'"'>))(c);
+			} else {
+				// Escape sequences start with a backlash.
+				// They either map one of the symbols,
+				// or a Unicode code point of the form uXXXX.
+				auto escape = lexy::dsl::backslash_escape //
+								  .symbol<escaped_symbols>();
+				return lexy::dsl::delimited(lexy::dsl::position(lexy::dsl::lit_b<'"'>))(c, escape);
+			}
 		}();
 
 		static constexpr auto value =
@@ -90,16 +108,18 @@ namespace ovdl::v2script::grammar {
 	};
 
 	/* REQUIREMENTS: DAT-638 */
+	template<ParseOptions Options>
 	struct ValueExpression {
-		static constexpr auto rule = lexy::dsl::p<Identifier> | lexy::dsl::p<StringExpression>;
+		static constexpr auto rule = lexy::dsl::p<Identifier<Options>> | lexy::dsl::p<StringExpression<Options>>;
 		static constexpr auto value = lexy::forward<ast::NodePtr>;
 	};
 
+	template<ParseOptions Options>
 	struct SimpleAssignmentStatement {
 		static constexpr auto rule =
-			lexy::dsl::position(lexy::dsl::p<Identifier>) >>
-			lexy::dsl::equal_sign +
-				(lexy::dsl::p<ValueExpression> | lexy::dsl::recurse_branch<StatementListBlock>);
+			lexy::dsl::position(lexy::dsl::p<Identifier<Options>>) >>
+			(lexy::dsl::equal_sign +
+				(lexy::dsl::p<ValueExpression<Options>> | lexy::dsl::recurse_branch<StatementListBlock<Options>>));
 
 		static constexpr auto value = lexy::callback<ast::NodePtr>(
 			[](const char* pos, auto name, auto&& initalizer) {
@@ -108,13 +128,14 @@ namespace ovdl::v2script::grammar {
 	};
 
 	/* REQUIREMENTS: DAT-639 */
+	template<ParseOptions Options>
 	struct AssignmentStatement {
 		static constexpr auto rule =
-			lexy::dsl::position(lexy::dsl::p<Identifier>) >>
+			lexy::dsl::position(lexy::dsl::p<Identifier<Options>>) >>
 				(lexy::dsl::equal_sign >>
-						(lexy::dsl::p<ValueExpression> | lexy::dsl::recurse_branch<StatementListBlock>) |
+						(lexy::dsl::p<ValueExpression<Options>> | lexy::dsl::recurse_branch<StatementListBlock<Options>>) |
 					lexy::dsl::else_ >> lexy::dsl::return_) |
-			lexy::dsl::p<StringExpression>;
+			lexy::dsl::p<StringExpression<Options>>;
 
 		static constexpr auto value = lexy::callback<ast::NodePtr>(
 			[](const char* pos, auto name, lexy::nullopt = {}) {
@@ -129,11 +150,12 @@ namespace ovdl::v2script::grammar {
 	};
 
 	/* REQUIREMENTS: DAT-640 */
+	template<ParseOptions Options>
 	struct StatementListBlock {
 		static constexpr auto rule =
 			lexy::dsl::position(lexy::dsl::curly_bracketed.open()) >>
-			lexy::dsl::opt(lexy::dsl::list(lexy::dsl::p<AssignmentStatement>)) +
-				lexy::dsl::opt(lexy::dsl::semicolon) >>
+			(lexy::dsl::opt(lexy::dsl::list(lexy::dsl::recurse_branch<AssignmentStatement<Options>>)) +
+				lexy::dsl::opt(lexy::dsl::semicolon)) >>
 			lexy::dsl::position(lexy::dsl::curly_bracketed.close());
 
 		static constexpr auto value =
@@ -156,11 +178,12 @@ namespace ovdl::v2script::grammar {
 				});
 	};
 
+	template<ParseOptions Options>
 	struct File {
 		// 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>);
+		static constexpr auto rule = lexy::dsl::position + lexy::dsl::terminator(lexy::dsl::eof).list(lexy::dsl::p<AssignmentStatement<Options>>);
 
 		static constexpr auto value = lexy::as_list<std::vector<ast::NodePtr>> >> lexy::new_<ast::FileNode, ast::NodePtr>;
 	};
diff --git a/src/openvic-dataloader/v2script/TriggerGrammar.hpp b/src/openvic-dataloader/v2script/TriggerGrammar.hpp
index 6d964db..3849b12 100644
--- a/src/openvic-dataloader/v2script/TriggerGrammar.hpp
+++ b/src/openvic-dataloader/v2script/TriggerGrammar.hpp
@@ -9,7 +9,7 @@
 
 namespace ovdl::v2script::grammar {
 	struct TriggerStatement {
-		static constexpr auto rule = lexy::dsl::inline_<SimpleAssignmentStatement>;
+		static constexpr auto rule = lexy::dsl::inline_<SimpleAssignmentStatement<StringEscapeOption>>;
 
 		static constexpr auto value = lexy::callback<ast::NodePtr>(
 			[](auto name, auto&& initalizer) {
@@ -18,7 +18,7 @@ namespace ovdl::v2script::grammar {
 	};
 
 	struct TriggerList {
-		static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SimpleAssignmentStatement>);
+		static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SimpleAssignmentStatement<StringEscapeOption>>);
 
 		static constexpr auto value =
 			lexy::as_list<std::vector<ast::NodePtr>> >>