aboutsummaryrefslogtreecommitdiff
path: root/src/openvic-dataloader
diff options
context:
space:
mode:
Diffstat (limited to 'src/openvic-dataloader')
-rw-r--r--src/openvic-dataloader/detail/DetectUtf8.hpp52
-rw-r--r--src/openvic-dataloader/detail/Errors.hpp19
-rw-r--r--src/openvic-dataloader/detail/LexyLitRange.hpp16
-rw-r--r--src/openvic-dataloader/detail/NullBuff.hpp30
-rw-r--r--src/openvic-dataloader/detail/Warnings.hpp21
-rw-r--r--src/openvic-dataloader/v2script/DecisionGrammar.hpp14
-rw-r--r--src/openvic-dataloader/v2script/EventGrammar.hpp14
-rw-r--r--src/openvic-dataloader/v2script/Grammar.cpp74
-rw-r--r--src/openvic-dataloader/v2script/Parser.cpp224
-rw-r--r--src/openvic-dataloader/v2script/SimpleGrammar.hpp105
10 files changed, 495 insertions, 74 deletions
diff --git a/src/openvic-dataloader/detail/DetectUtf8.hpp b/src/openvic-dataloader/detail/DetectUtf8.hpp
new file mode 100644
index 0000000..b2969ce
--- /dev/null
+++ b/src/openvic-dataloader/detail/DetectUtf8.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include "detail/LexyLitRange.hpp"
+#include <lexy/action/match.hpp>
+#include <lexy/dsl.hpp>
+
+namespace ovdl::detail {
+ namespace detect_utf8 {
+
+ template<bool INCLUDE_ASCII>
+ struct DetectUtf8 {
+ struct not_utf8 {
+ static constexpr auto name = "not utf8";
+ };
+
+ static constexpr auto rule = [] {
+ constexpr auto is_not_ascii_flag = lexy::dsl::context_flag<DetectUtf8>;
+
+ // & 0b10000000 == 0b00000000
+ constexpr auto ascii_values = lexydsl::make_range<0b00000000, 0b01111111>();
+ // & 0b11100000 == 0b11000000
+ constexpr auto two_byte = lexydsl::make_range<0b11000000, 0b11011111>();
+ // & 0b11110000 == 0b11100000
+ constexpr auto three_byte = lexydsl::make_range<0b11100000, 0b11101111>();
+ // & 0b11111000 == 0b11110000
+ constexpr auto four_byte = lexydsl::make_range<0b11110000, 0b11110111>();
+ // & 0b11000000 == 0b10000000
+ constexpr auto check_bytes = lexydsl::make_range<0b10000000, 0b10111111>();
+
+ constexpr auto utf8_check =
+ ((four_byte >> lexy::dsl::times<3>(check_bytes)) |
+ (three_byte >> lexy::dsl::times<2>(check_bytes)) |
+ (two_byte >> lexy::dsl::times<1>(check_bytes))) >>
+ is_not_ascii_flag.set();
+
+ return is_not_ascii_flag.template create<INCLUDE_ASCII>() +
+ lexy::dsl::while_(utf8_check | ascii_values) +
+ lexy::dsl::must(is_not_ascii_flag.is_set()).template error<not_utf8>;
+ }();
+ };
+ }
+
+ template<typename Input>
+ constexpr bool is_utf8_no_ascii(const Input& input) {
+ return lexy::match<detect_utf8::DetectUtf8<false>>(input);
+ }
+
+ template<typename Input>
+ constexpr bool is_utf8(const Input& input) {
+ return lexy::match<detect_utf8::DetectUtf8<true>>(input);
+ }
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/detail/Errors.hpp b/src/openvic-dataloader/detail/Errors.hpp
new file mode 100644
index 0000000..f8ed21b
--- /dev/null
+++ b/src/openvic-dataloader/detail/Errors.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include "openvic-dataloader/v2script/Parser.hpp"
+
+namespace ovdl::v2script::errors {
+ inline const v2script::Parser::Error make_no_file_error(const char* file_path) {
+ std::string message;
+ if (!file_path) {
+ message = "File path not specified.";
+ } else {
+ message = "File '" + std::string(file_path) + "' was not found.";
+ }
+
+ return v2script::Parser::Error { Parser::Error::Type::Fatal, message, 1 };
+ }
+}
+
+namespace ovdl::ovscript::errors {
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/detail/LexyLitRange.hpp b/src/openvic-dataloader/detail/LexyLitRange.hpp
new file mode 100644
index 0000000..a6761a8
--- /dev/null
+++ b/src/openvic-dataloader/detail/LexyLitRange.hpp
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <lexy/dsl/literal.hpp>
+
+namespace ovdl::detail::lexydsl {
+ template<unsigned char LOW, unsigned char HIGH>
+ consteval auto make_range() {
+ if constexpr (LOW == HIGH) {
+ return lexy::dsl::lit_c<LOW>;
+ } else if constexpr (LOW == (HIGH - 1)) {
+ return lexy::dsl::lit_c<LOW> / lexy::dsl::lit_c<HIGH>;
+ } else {
+ return lexy::dsl::lit_c<LOW> / make_range<LOW + 1, HIGH>();
+ }
+ }
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/detail/NullBuff.hpp b/src/openvic-dataloader/detail/NullBuff.hpp
new file mode 100644
index 0000000..baf9e1b
--- /dev/null
+++ b/src/openvic-dataloader/detail/NullBuff.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <ostream>
+
+namespace ovdl::detail {
+ template<class cT, class traits = std::char_traits<cT>>
+ class basic_nullbuf : public std::basic_streambuf<cT, traits> {
+ typename traits::int_type overflow(typename traits::int_type c) {
+ return traits::not_eof(c); // indicate success
+ }
+ };
+
+ template<class cT, class traits = std::char_traits<cT>>
+ class basic_onullstream : public std::basic_ostream<cT, traits> {
+ public:
+ basic_onullstream() : std::basic_ios<cT, traits>(&m_sbuf),
+ std::basic_ostream<cT, traits>(&m_sbuf) {
+ std::basic_ios<cT, traits>::init(&m_sbuf);
+ }
+
+ private:
+ basic_nullbuf<cT, traits> m_sbuf;
+ };
+
+ typedef basic_onullstream<char> onullstream;
+ typedef basic_onullstream<wchar_t> wonullstream;
+
+ inline onullstream cnull;
+ inline onullstream wcnull;
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/detail/Warnings.hpp b/src/openvic-dataloader/detail/Warnings.hpp
new file mode 100644
index 0000000..f854fa8
--- /dev/null
+++ b/src/openvic-dataloader/detail/Warnings.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "openvic-dataloader/v2script/Parser.hpp"
+
+namespace ovdl::v2script::warnings {
+ inline const v2script::Parser::Warning make_utf8_warning(const char* file_path) {
+ constexpr std::string_view message_suffix = "This may cause problems. Prefer Windows-1252 encoding.";
+
+ std::string message;
+ if (!file_path) {
+ message = "Buffer is a UTF-8 encoded string. " + std::string(message_suffix);
+ } else {
+ message = "File '" + std::string(file_path) + "' is a UTF-8 encoded file. " + std::string(message_suffix);
+ }
+
+ return v2script::Parser::Warning { message, 1 };
+ }
+}
+
+namespace ovdl::ovscript::warnings {
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/v2script/DecisionGrammar.hpp b/src/openvic-dataloader/v2script/DecisionGrammar.hpp
new file mode 100644
index 0000000..ebc9ad2
--- /dev/null
+++ b/src/openvic-dataloader/v2script/DecisionGrammar.hpp
@@ -0,0 +1,14 @@
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <lexy/callback.hpp>
+#include <lexy/dsl.hpp>
+#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>
+
+// Decision Grammar Definitions //
+namespace ovdl::v2script::grammar {
+
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/v2script/EventGrammar.hpp b/src/openvic-dataloader/v2script/EventGrammar.hpp
new file mode 100644
index 0000000..7ab40d4
--- /dev/null
+++ b/src/openvic-dataloader/v2script/EventGrammar.hpp
@@ -0,0 +1,14 @@
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <lexy/callback.hpp>
+#include <lexy/dsl.hpp>
+#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>
+
+// Event Grammar Definitions //
+namespace ovdl::v2script::grammar {
+
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/v2script/Grammar.cpp b/src/openvic-dataloader/v2script/Grammar.cpp
deleted file mode 100644
index ec9fac2..0000000
--- a/src/openvic-dataloader/v2script/Grammar.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-#include <lexy/dsl.hpp>
-#include <openvic-dataloader/v2script/Parser.hpp>
-
-using namespace ovdl::v2script;
-
-// Node Definitions //
-namespace dsl = lexy::dsl;
-
-namespace ovdl::v2script::nodes {
- struct StatementListBlock;
-
- static constexpr auto whitespace_specifier = dsl::code_point.range<0x09, 0x0A>() / dsl::lit_cp<0x0D> / dsl::lit_cp<0x20>;
- static constexpr auto comment_specifier = LEXY_LIT("#") >> dsl::until(dsl::newline).or_eof();
-
- static constexpr auto data_specifier =
- dsl::ascii::alpha_digit_underscore /
- dsl::code_point.range<0x25, 0x27>() / dsl::lit_cp<0x2B> / dsl::code_point.range<0x2D, 0x2E>() /
- dsl::lit_cp<0x3A> /
- dsl::lit_cp<0x8A> / dsl::lit_cp<0x8C> / dsl::lit_cp<0x8E> /
- dsl::lit_cp<0x92> / dsl::lit_cp<0x9A> / dsl::lit_cp<0x9C> / dsl::code_point.range<0x9E, 0x9F>() /
- dsl::code_point.range<0xC0, 0xD6>() / dsl::code_point.range<0xD8, 0xF6>() / dsl::code_point.range<0xF8, 0xFF>();
-
- static constexpr auto data_char_class = LEXY_CHAR_CLASS("DataSpecifier", data_specifier);
-
- struct Identifier {
- static constexpr auto rule = dsl::identifier(data_char_class);
- };
-
- 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 = -dsl::unicode::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 = dsl::backslash_escape //
- .symbol<escaped_symbols>()
- .rule(dsl::lit_c<'u'> >> dsl::code_point_id<4>);
- return dsl::quoted(c, escape);
- }();
- };
-
- struct AssignmentStatement {
- static constexpr auto rule = dsl::p<Identifier> >>
- (dsl::equal_sign >>
- (dsl::p<Identifier> | dsl::p<StringExpression> | dsl::recurse_branch<StatementListBlock>) |
- dsl::else_ >> dsl::return_);
- };
-
- struct StatementListBlock {
- static constexpr auto rule =
- dsl::curly_bracketed.open() >>
- dsl::opt(dsl::list(dsl::p<AssignmentStatement>)) + dsl::opt(dsl::semicolon) +
- dsl::curly_bracketed.close();
- };
-
- struct File {
- // Allow arbitrary spaces between individual tokens.
- static constexpr auto whitespace = whitespace_specifier | comment_specifier;
-
- static constexpr auto rule = dsl::terminator(dsl::eof).list(dsl::p<AssignmentStatement>);
- };
-}
diff --git a/src/openvic-dataloader/v2script/Parser.cpp b/src/openvic-dataloader/v2script/Parser.cpp
new file mode 100644
index 0000000..c0b6bd8
--- /dev/null
+++ b/src/openvic-dataloader/v2script/Parser.cpp
@@ -0,0 +1,224 @@
+#include "openvic-dataloader/v2script/Parser.hpp"
+
+#include <iostream>
+#include <memory>
+#include <optional>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include "SimpleGrammar.hpp"
+#include "detail/DetectUtf8.hpp"
+#include "detail/Errors.hpp"
+#include "detail/NullBuff.hpp"
+#include "detail/Warnings.hpp"
+#include <lexy/action/parse.hpp>
+#include <lexy/encoding.hpp>
+#include <lexy/input/buffer.hpp>
+#include <lexy/input/file.hpp>
+#include <lexy/lexeme.hpp>
+#include <lexy/visualize.hpp>
+#include <lexy_ext/report_error.hpp>
+#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>
+
+using namespace ovdl::v2script;
+
+/// BufferHandler ///
+
+class Parser::BufferHandler {
+public:
+ bool is_valid() const {
+ return _buffer.size() != 0;
+ }
+
+ std::optional<Error> load_buffer(const char* data, std::size_t size) {
+ _buffer = lexy::buffer(data, size);
+ return std::nullopt;
+ }
+
+ std::optional<Error> load_buffer(const char* start, const char* end) {
+ _buffer = lexy::buffer(start, end);
+ return std::nullopt;
+ }
+
+ std::optional<Error> load_file(const char* path) {
+ auto file = lexy::read_file(path);
+ if (!file) {
+ return errors::make_no_file_error(path);
+ }
+
+ _buffer = file.buffer();
+ return std::nullopt;
+ }
+
+ constexpr bool is_exclusive_utf8() const {
+ return detail::is_utf8_no_ascii(_buffer);
+ }
+
+ template<typename Node, typename ErrorCallback>
+ std::optional<std::vector<Error>> parse(const ErrorCallback& callback) {
+ auto result = lexy::parse<Node>(_buffer, callback);
+ if (!result) {
+ std::vector<Error> errors;
+ return errors;
+ }
+ // This is mighty frustrating
+ _root = std::unique_ptr<ast::Node>(result.value());
+ return std::nullopt;
+ }
+
+ std::unique_ptr<ast::Node>& get_root() {
+ return _root;
+ }
+
+private:
+ lexy::buffer<lexy::default_encoding> _buffer;
+ std::unique_ptr<ast::Node> _root;
+};
+
+/// BufferHandler ///
+
+Parser::Parser()
+ : _buffer_handler(std::make_unique<BufferHandler>()),
+ _error_stream(detail::cnull) {
+ set_error_log_to_stderr();
+}
+
+Parser::Parser(Parser&&) = default;
+Parser& Parser::operator=(Parser&& value) = default;
+Parser::~Parser() = default;
+
+Parser Parser::from_buffer(const char* data, std::size_t size) {
+ Parser result;
+ return std::move(result.load_from_buffer(data, size));
+}
+
+Parser Parser::from_buffer(const char* start, const char* end) {
+ Parser result;
+ return std::move(result.load_from_buffer(start, end));
+}
+
+Parser Parser::from_file(const char* path) {
+ Parser result;
+ return std::move(result.load_from_file(path));
+}
+
+///
+/// @brief Executes a function on _buffer_handler that is expected to load a buffer
+///
+/// Expected Use:
+/// @code {.cpp}
+/// _run_load_func(&BufferHandler::<load_function>, <arguments>);
+/// @endcode
+///
+/// @tparam Args
+/// @param func
+/// @param args
+///
+template<typename... Args>
+inline void Parser::_run_load_func(std::optional<Error> (BufferHandler::*func)(Args...), Args... args) {
+ _warnings.clear();
+ _errors.clear();
+ _has_fatal_error = false;
+ if (auto error = (_buffer_handler.get()->*func)(args...); error) {
+ _has_fatal_error = error.value().type == Error::Type::Fatal;
+ _errors.push_back(error.value());
+ _error_stream.get() << "Error: " << _errors.back().message << '\n';
+ }
+}
+
+Parser& Parser::load_from_buffer(const char* data, std::size_t size) {
+ _run_load_func(&BufferHandler::load_buffer, data, size);
+ return *this;
+}
+
+Parser& Parser::load_from_buffer(const char* start, const char* end) {
+ _run_load_func(&BufferHandler::load_buffer, start, end);
+ return *this;
+}
+
+Parser& Parser::load_from_file(const char* path) {
+ _file_path = path;
+ _run_load_func(&BufferHandler::load_file, path);
+ return *this;
+}
+
+void Parser::set_error_log_to_null() {
+ set_error_log_to(detail::cnull);
+}
+
+void Parser::set_error_log_to_stderr() {
+ set_error_log_to(std::cerr);
+}
+
+void Parser::set_error_log_to_stdout() {
+ set_error_log_to(std::cout);
+}
+
+void Parser::set_error_log_to(std::basic_ostream<char>& stream) {
+ _error_stream = stream;
+}
+
+bool Parser::simple_parse() {
+ if (!_buffer_handler->is_valid()) {
+ return false;
+ }
+
+ struct ostream_output_iterator {
+ std::reference_wrapper<std::ostream> _stream;
+
+ auto operator*() const noexcept {
+ return *this;
+ }
+ auto operator++(int) const noexcept {
+ return *this;
+ }
+
+ ostream_output_iterator& operator=(char c) {
+ _stream.get().put(c);
+ return *this;
+ }
+ };
+
+ if (_buffer_handler->is_exclusive_utf8()) {
+ _warnings.push_back(warnings::make_utf8_warning(_file_path));
+ }
+
+ auto errors = _buffer_handler->parse<grammar::File>(lexy_ext::report_error.path(_file_path).to(ostream_output_iterator { _error_stream }));
+ if (errors) {
+ _errors.reserve(errors->size());
+ for (auto& err : errors.value()) {
+ _has_fatal_error |= err.type == Error::Type::Fatal;
+ _errors.push_back(err);
+ _error_stream.get() << "Error: " << err.message << '\n';
+ }
+ return false;
+ }
+ _file_node.reset(static_cast<ast::FileNode*>(_buffer_handler->get_root().release()));
+ return true;
+}
+
+bool Parser::has_error() const {
+ return !_errors.empty();
+}
+
+bool Parser::has_fatal_error() const {
+ return _has_fatal_error;
+}
+
+bool Parser::has_warning() const {
+ return !_warnings.empty();
+}
+
+const std::vector<Parser::Error>& Parser::get_errors() const {
+ return _errors;
+}
+
+const std::vector<Parser::Warning>& Parser::get_warnings() const {
+ return _warnings;
+}
+
+const FileNode* Parser::get_file_node() const {
+ return _file_node.get();
+} \ No newline at end of file
diff --git a/src/openvic-dataloader/v2script/SimpleGrammar.hpp b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
new file mode 100644
index 0000000..48a80ce
--- /dev/null
+++ b/src/openvic-dataloader/v2script/SimpleGrammar.hpp
@@ -0,0 +1,105 @@
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "detail/LexyLitRange.hpp"
+#include <lexy/callback.hpp>
+#include <lexy/dsl.hpp>
+#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>
+
+// Grammar Definitions //
+namespace ovdl::v2script::grammar {
+ struct StatementListBlock;
+
+ static constexpr auto whitespace_specifier = lexy::dsl::ascii::blank / lexy::dsl::ascii::newline;
+ static constexpr auto comment_specifier = LEXY_LIT("#") >> lexy::dsl::until(lexy::dsl::newline).or_eof();
+
+ static constexpr auto data_specifier =
+ lexy::dsl::ascii::alpha_digit_underscore /
+ LEXY_ASCII_ONE_OF("%&'") / lexy::dsl::lit_c<0x2B> / LEXY_ASCII_ONE_OF("-.") /
+ lexy::dsl::ascii::digit / lexy::dsl::lit_c<0x3A> /
+ lexy::dsl::lit_c<0x40> / lexy::dsl::ascii::upper / lexy::dsl::lit_c<0x5F> /
+ lexy::dsl::ascii::lower / lexy::dsl::lit_b<0x8A> / lexy::dsl::lit_b<0x8C> / lexy::dsl::lit_b<0x8E> /
+ lexy::dsl::lit_b<0x92> / lexy::dsl::lit_b<0x97> / lexy::dsl::lit_b<0x9A> / lexy::dsl::lit_b<0x9C> / lexy::dsl::lit_b<0x9E> / lexy::dsl::lit_b<0x9F> /
+ lexy::dsl::lit_b<0xC0> /
+ ovdl::detail::lexydsl::make_range<0xC0, 0xD6>() / ovdl::detail::lexydsl::make_range<0xD8, 0xF6>() / ovdl::detail::lexydsl::make_range<0xF8, 0xFF>();
+
+ static constexpr auto data_char_class = LEXY_CHAR_CLASS("DataSpecifier", data_specifier);
+
+ struct Identifier {
+ static constexpr auto rule = lexy::dsl::identifier(data_char_class);
+ static constexpr auto value = lexy::as_string<std::string> | lexy::new_<ast::IdentifierNode, ast::NodePtr>;
+ };
+
+ 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::quoted(c, escape);
+ }();
+
+ static constexpr auto value = lexy::as_string<std::string> >> lexy::new_<ast::StringNode, ast::NodePtr>;
+ };
+
+ struct AssignmentStatement {
+ static constexpr auto rule =
+ lexy::dsl::p<Identifier> >>
+ (lexy::dsl::equal_sign >>
+ (lexy::dsl::p<Identifier> | lexy::dsl::p<StringExpression> | lexy::dsl::recurse_branch<StatementListBlock>) |
+ lexy::dsl::else_ >> lexy::dsl::return_) |
+ lexy::dsl::p<StringExpression>;
+
+ static constexpr auto value = lexy::callback<ast::NodePtr>(
+ [](auto name, lexy::nullopt = {}) {
+ return LEXY_MOV(name);
+ },
+ [](auto name, auto&& initalizer) {
+ return make_node_ptr<ast::AssignNode>(LEXY_MOV(name), LEXY_MOV(initalizer));
+ });
+ };
+
+ struct StatementListBlock {
+ static constexpr auto rule =
+ lexy::dsl::curly_bracketed.open() >>
+ lexy::dsl::opt(lexy::dsl::list(lexy::dsl::p<AssignmentStatement>)) + lexy::dsl::opt(lexy::dsl::semicolon) +
+ lexy::dsl::curly_bracketed.close();
+
+ static constexpr auto value =
+ lexy::as_list<std::vector<ast::NodePtr>> >>
+ lexy::callback<ast::NodePtr>(
+ [](lexy::nullopt = {}, lexy::nullopt = {}) {
+ return ast::make_node_ptr<ast::ListNode>();
+ },
+ [](auto&& list, lexy::nullopt = {}) {
+ return make_node_ptr<ast::ListNode>(LEXY_MOV(list));
+ },
+ [](auto& list) {
+ return make_node_ptr<ast::ListNode>(list);
+ });
+ };
+
+ struct File {
+ // 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<AssignmentStatement>);
+
+ static constexpr auto value = lexy::as_list<std::vector<ast::NodePtr>> >> lexy::new_<ast::FileNode, ast::NodePtr>;
+ };
+}