Merge pull request #24 from OpenVicProject/support/lua-defines

Add Lua Defines parsing

2 files changed, 135 insertions, 0 deletions

diff --git a/src/openvic-dataloader/v2script/LuaDefinesGrammar.hpp b/src/openvic-dataloader/v2script/LuaDefinesGrammar.hpp
new file mode 100644
index 0000000..b64d0f9
--- /dev/null
+++ b/src/openvic-dataloader/v2script/LuaDefinesGrammar.hpp
@@ -0,0 +1,112 @@
+#pragma once
+
+#include <lexy/dsl.hpp>
+
+#include "SimpleGrammar.hpp"
+#include "detail/LexyLitRange.hpp"
+
+namespace ovdl::v2script::lua::grammar {
+	struct ParseOptions {
+	};
+
+	template<ParseOptions Options>
+	struct StatementListBlock;
+
+	static constexpr auto comment_specifier = LEXY_LIT("--") >> lexy::dsl::until(lexy::dsl::newline).or_eof();
+
+	template<ParseOptions Options>
+	struct Identifier {
+		static constexpr auto rule = lexy::dsl::identifier(lexy::dsl::ascii::alpha_underscore, lexy::dsl::ascii::alpha_digit_underscore);
+		static constexpr auto value = lexy::callback<ast::NodePtr>(
+			[](auto lexeme) {
+				std::string str(lexeme.data(), lexeme.size());
+				return ast::make_node_ptr<ast::IdentifierNode>(ast::NodeLocation { lexeme.begin(), lexeme.end() }, LEXY_MOV(str));
+			});
+	};
+
+	template<ParseOptions Options>
+	struct Value {
+		static constexpr auto rule = lexy::dsl::identifier(lexy::dsl::ascii::digit / lexy::dsl::lit_c<'.'> / lexy::dsl::lit_c<'-'>);
+		static constexpr auto value = lexy::callback<ast::NodePtr>(
+			[](auto lexeme) {
+				std::string str(lexeme.data(), lexeme.size());
+				return ast::make_node_ptr<ast::IdentifierNode>(ast::NodeLocation { lexeme.begin(), lexeme.end() }, LEXY_MOV(str));
+			});
+	};
+
+	template<ParseOptions Options>
+	struct String {
+		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;
+
+			return lexy::dsl::delimited(lexy::dsl::position(lexy::dsl::lit_b<'"'>))(c) | lexy::dsl::delimited(lexy::dsl::position(lexy::dsl::lit_b<'\''>))(c);
+		}();
+
+		static constexpr auto value =
+			lexy::as_string<std::string> >>
+			lexy::callback<ast::NodePtr>(
+				[](const char* begin, auto&& str, const char* end) {
+					return ast::make_node_ptr<ast::StringNode>(ast::NodeLocation::make_from(begin, end), LEXY_MOV(str));
+				});
+	};
+
+	template<ParseOptions Options>
+	struct Expression {
+		static constexpr auto rule = lexy::dsl::p<Value<Options>> | lexy::dsl::p<String<Options>>;
+		static constexpr auto value = lexy::forward<ast::NodePtr>;
+	};
+
+	template<ParseOptions Options>
+	struct AssignmentStatement {
+		static constexpr auto rule =
+			lexy::dsl::position(lexy::dsl::p<Identifier<Options>>) >>
+			lexy::dsl::equal_sign >>
+			(lexy::dsl::p<Expression<Options>> | lexy::dsl::recurse_branch<StatementListBlock<Options>>);
+
+		static constexpr auto value = lexy::callback<ast::NodePtr>(
+			[](const char* pos, auto name, lexy::nullopt = {}) {
+				return LEXY_MOV(name);
+			},
+			[](auto name, lexy::nullopt = {}) {
+				return LEXY_MOV(name);
+			},
+			[](const char* pos, auto name, auto&& initalizer) {
+				return ast::make_node_ptr<ast::AssignNode>(pos, LEXY_MOV(name), LEXY_MOV(initalizer));
+			});
+	};
+
+	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::recurse_branch<AssignmentStatement<Options>>,
+					lexy::dsl::trailing_sep(lexy::dsl::lit_c<','>))) >>
+			lexy::dsl::position(lexy::dsl::curly_bracketed.close());
+
+		static constexpr auto value =
+			lexy::as_list<std::vector<ast::NodePtr>> >>
+			lexy::callback<ast::NodePtr>(
+				[](const char* begin, lexy::nullopt, const char* end) {
+					return ast::make_node_ptr<ast::ListNode>(ast::NodeLocation::make_from(begin, end));
+				},
+				[](const char* begin, auto&& list, const char* end) {
+					return ast::make_node_ptr<ast::ListNode>(ast::NodeLocation::make_from(begin, end), LEXY_MOV(list));
+				},
+				[](const char* begin, auto& list, const char* end) {
+					return ast::make_node_ptr<ast::ListNode>(ast::NodeLocation::make_from(begin, end), list);
+				});
+	};
+
+	template<ParseOptions Options = ParseOptions {}>
+	struct File {
+		// Allow arbitrary spaces between individual tokens.
+		static constexpr auto whitespace = ovdl::v2script::grammar::whitespace_specifier | comment_specifier;
+
+		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>;
+	};
+}
\ No newline at end of file
diff --git a/src/openvic-dataloader/v2script/Parser.cpp b/src/openvic-dataloader/v2script/Parser.cpp
index 9e74e32..d7e4106 100644
--- a/src/openvic-dataloader/v2script/Parser.cpp
+++ b/src/openvic-dataloader/v2script/Parser.cpp
@@ -31,6 +31,7 @@
 #include "detail/Warnings.hpp"
 #include "v2script/DecisionGrammar.hpp"
 #include "v2script/EventGrammar.hpp"
+#include "v2script/LuaDefinesGrammar.hpp"
 
 using namespace ovdl;
 using namespace ovdl::v2script;
@@ -232,6 +233,28 @@ bool Parser::decision_parse() {
 	return true;
 }
 
+bool Parser::lua_defines_parse() {
+	if (!_buffer_handler->is_valid()) {
+		return false;
+	}
+
+	if (_buffer_handler->is_exclusive_utf8()) {
+		_warnings.push_back(warnings::make_utf8_warning(_file_path));
+	}
+
+	auto errors = _buffer_handler->parse<lua::grammar::File<>>(ovdl::detail::ReporError.path(_file_path).to(detail::OStreamOutputIterator { _error_stream }));
+	if (errors) {
+		_errors.reserve(errors->size());
+		for (auto& err : errors.value()) {
+			_has_fatal_error |= err.type == ParseError::Type::Fatal;
+			_errors.push_back(err);
+		}
+		return false;
+	}
+	_file_node.reset(static_cast<ast::FileNode*>(_buffer_handler->get_root().release()));
+	return true;
+}
+
 const FileNode* Parser::get_file_node() const {
 	return _file_node.get();
 }