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-rw-r--r--src/openvic-dataloader/csv/CsvGrammar.hpp187
1 files changed, 163 insertions, 24 deletions
diff --git a/src/openvic-dataloader/csv/CsvGrammar.hpp b/src/openvic-dataloader/csv/CsvGrammar.hpp
index edce97b..4765112 100644
--- a/src/openvic-dataloader/csv/CsvGrammar.hpp
+++ b/src/openvic-dataloader/csv/CsvGrammar.hpp
@@ -11,8 +11,141 @@
#include <lexy/callback.hpp>
#include <lexy/dsl.hpp>
+#include "detail/LexyLitRange.hpp"
+
// Grammar Definitions //
-namespace ovdl::csv::grammar {
+namespace ovdl::csv::grammar::windows1252 {
+ constexpr auto character = detail::lexydsl::make_range<0x01, 0xFF>();
+ constexpr auto control =
+ lexy::dsl::ascii::control /
+ lexy::dsl::lit_b<0x81> / lexy::dsl::lit_b<0x8D> / lexy::dsl::lit_b<0x8F> /
+ lexy::dsl::lit_b<0x90> / lexy::dsl::lit_b<0x9D>;
+
+ struct StringValue {
+ 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');
+ /// This doesn't actually do anything, so this might to be manually parsed if vic2's CSV parser creates a " from ""
+ // static constexpr auto escaped_quote = lexy::symbol_table<char> //
+ // .map<'"'>('"');
+ static constexpr auto rule = [] {
+ // Arbitrary code points
+ auto c = character - (control / lexy::dsl::lit_b<'"'>);
+
+ auto back_escape = lexy::dsl::backslash_escape //
+ .symbol<escaped_symbols>();
+
+ // auto quote_escape = lexy::dsl::escape(lexy::dsl::lit_c<'"'>) //
+ // .symbol<escaped_quote>();
+
+ return lexy::dsl::quoted(c, back_escape);
+ }();
+
+ static constexpr auto value = lexy::as_string<std::string>;
+ };
+
+ template<char Sep>
+ struct PlainValue {
+ static constexpr auto rule = lexy::dsl::identifier(character - (lexy::dsl::lit_b<Sep> / lexy::dsl::ascii::newline));
+ static constexpr auto value = lexy::as_string<std::string>;
+ };
+
+ template<char Sep>
+ struct Value {
+ static constexpr auto rule = lexy::dsl::p<StringValue> | lexy::dsl::p<PlainValue<Sep>>;
+ static constexpr auto value = lexy::forward<std::string>;
+ };
+
+ template<char Sep>
+ struct SepConst {
+ static constexpr auto rule = lexy::dsl::lit_b<Sep>;
+ static constexpr auto value = lexy::constant(1);
+ };
+
+ template<char Sep>
+ struct Seperator {
+ static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SepConst<Sep>>);
+ static constexpr auto value = lexy::count;
+ };
+
+ template<char Sep>
+ struct LineEnd {
+ static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<Value<Sep>>, lexy::dsl::trailing_sep(lexy::dsl::p<Seperator<Sep>>));
+ static constexpr auto value = lexy::fold_inplace<csv::LineObject>(
+ std::initializer_list<csv::LineObject::value_type> {},
+ [](csv::LineObject& result, auto&& arg) {
+ if constexpr (std::is_same_v<std::decay_t<decltype(arg)>, std::size_t>) {
+ // Count seperators, adds to previous value, making it a position
+ using position_type = csv::LineObject::position_type;
+ result.emplace_back(static_cast<position_type>(arg + result.back().first), "");
+ } else {
+ if (result.empty()) result.emplace_back(0u, LEXY_MOV(arg));
+ else {
+ auto& [pos, value] = result.back();
+ value = arg;
+ }
+ }
+ });
+ };
+
+ template<char Sep>
+ struct Line {
+
+ static constexpr auto suffix_setter(csv::LineObject& line) {
+ auto& [position, value] = line.back();
+ if (value.empty()) {
+ line.set_suffix_end(position);
+ line.pop_back();
+ } else {
+ line.set_suffix_end(position + 1);
+ }
+ };
+
+ static constexpr auto rule = lexy::dsl::p<LineEnd<Sep>> | lexy::dsl::p<Seperator<Sep>> >> lexy::dsl::p<LineEnd<Sep>>;
+ static constexpr auto value =
+ lexy::callback<csv::LineObject>(
+ [](csv::LineObject&& line) {
+ suffix_setter(line);
+ return LEXY_MOV(line);
+ },
+ [](std::size_t prefix_count, csv::LineObject&& line) {
+ line.set_prefix_end(prefix_count);
+ // position needs to be adjusted to prefix
+ for (auto& [position, value] : line) {
+ position += prefix_count;
+ }
+ suffix_setter(line);
+ return LEXY_MOV(line);
+ });
+ };
+
+ template<char Sep>
+ struct File {
+ static constexpr auto rule =
+ lexy::dsl::whitespace(lexy::dsl::newline) +
+ lexy::dsl::opt(lexy::dsl::list(lexy::dsl::p<Line<Sep>>, lexy::dsl::trailing_sep(lexy::dsl::eol)));
+
+ static constexpr auto value = lexy::as_list<std::vector<csv::LineObject>>;
+ };
+
+ using CommaFile = File<','>;
+ using ColonFile = File<':'>;
+ using SemiColonFile = File<';'>;
+ using TabFile = File<'\t'>;
+ using BarFile = File<'|'>;
+}
+
+namespace ovdl::csv::grammar::utf8 {
+ constexpr auto character = lexy::dsl::unicode::character;
+ constexpr auto control = lexy::dsl::unicode::control;
+
struct StringValue {
static constexpr auto escaped_symbols = lexy::symbol_table<char> //
.map<'"'>('"')
@@ -25,52 +158,58 @@ namespace ovdl::csv::grammar {
.map<'r'>('\r')
.map<'t'>('\t');
/// This doesn't actually do anything, so this might to be manually parsed if vic2's CSV parser creates a " from ""
- static constexpr auto escaped_quote = lexy::symbol_table<char> //
- .map<'"'>('"');
+ // static constexpr auto escaped_quote = lexy::symbol_table<char> //
+ // .map<'"'>('"');
static constexpr auto rule = [] {
// Arbitrary code points
- auto c = -lexy::dsl::lit_c<'"'>;
+ auto c = character - (control / lexy::dsl::lit_b<'"'>);
auto back_escape = lexy::dsl::backslash_escape //
.symbol<escaped_symbols>();
- auto quote_escape = lexy::dsl::escape(lexy::dsl::lit_c<'"'>) //
- .symbol<escaped_quote>();
+ // auto quote_escape = lexy::dsl::escape(lexy::dsl::lit_c<'"'>) //
+ // .symbol<escaped_quote>();
- return lexy::dsl::quoted(c, back_escape, quote_escape);
+ return lexy::dsl::quoted(c, back_escape);
}();
static constexpr auto value = lexy::as_string<std::string>;
};
- template<auto Sep>
+ template<char Sep>
struct PlainValue {
- static constexpr auto rule = lexy::dsl::identifier(-(Sep / lexy::dsl::lit_c<'\n'>));
+ static constexpr auto rule = lexy::dsl::identifier(character - (lexy::dsl::lit_b<Sep> / lexy::dsl::ascii::newline));
static constexpr auto value = lexy::as_string<std::string>;
};
- template<auto Sep>
+ template<char Sep>
struct Value {
static constexpr auto rule = lexy::dsl::p<StringValue> | lexy::dsl::p<PlainValue<Sep>>;
static constexpr auto value = lexy::forward<std::string>;
};
- template<auto Sep>
- struct SeperatorCount {
- static constexpr auto rule = lexy::dsl::list(Sep);
+ template<char Sep>
+ struct SepConst {
+ static constexpr auto rule = lexy::dsl::lit_b<Sep>;
+ static constexpr auto value = lexy::constant(1);
+ };
+
+ template<char Sep>
+ struct Seperator {
+ static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<SepConst<Sep>>);
static constexpr auto value = lexy::count;
};
- template<auto Sep>
+ template<char Sep>
struct LineEnd {
- static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<Value<Sep>>, lexy::dsl::trailing_sep(lexy::dsl::p<SeperatorCount<Sep>>));
+ static constexpr auto rule = lexy::dsl::list(lexy::dsl::p<Value<Sep>>, lexy::dsl::trailing_sep(lexy::dsl::p<Seperator<Sep>>));
static constexpr auto value = lexy::fold_inplace<csv::LineObject>(
std::initializer_list<csv::LineObject::value_type> {},
[](csv::LineObject& result, auto&& arg) {
if constexpr (std::is_same_v<std::decay_t<decltype(arg)>, std::size_t>) {
// Count seperators, adds to previous value, making it a position
using position_type = csv::LineObject::position_type;
- result.emplace_back(static_cast<position_type>(arg + std::get<0>(result.back())), "");
+ result.emplace_back(static_cast<position_type>(arg + result.back().first), "");
} else {
if (result.empty()) result.emplace_back(0u, LEXY_MOV(arg));
else {
@@ -81,7 +220,7 @@ namespace ovdl::csv::grammar {
});
};
- template<auto Sep>
+ template<char Sep>
struct Line {
static constexpr auto suffix_setter(csv::LineObject& line) {
@@ -94,7 +233,7 @@ namespace ovdl::csv::grammar {
}
};
- static constexpr auto rule = lexy::dsl::p<LineEnd<Sep>> | lexy::dsl::p<SeperatorCount<Sep>> >> lexy::dsl::p<LineEnd<Sep>>;
+ static constexpr auto rule = lexy::dsl::p<LineEnd<Sep>> | lexy::dsl::p<Seperator<Sep>> >> lexy::dsl::p<LineEnd<Sep>>;
static constexpr auto value =
lexy::callback<csv::LineObject>(
[](csv::LineObject&& line) {
@@ -112,7 +251,7 @@ namespace ovdl::csv::grammar {
});
};
- template<auto Sep>
+ template<char Sep>
struct File {
static constexpr auto rule =
lexy::dsl::whitespace(lexy::dsl::newline) +
@@ -121,9 +260,9 @@ namespace ovdl::csv::grammar {
static constexpr auto value = lexy::as_list<std::vector<csv::LineObject>>;
};
- using CommaFile = File<lexy::dsl::lit_c<','>>;
- using ColonFile = File<lexy::dsl::lit_c<':'>>;
- using SemiColonFile = File<lexy::dsl::lit_c<';'>>;
- using TabFile = File<lexy::dsl::lit_c<'\t'>>;
- using BarFile = File<lexy::dsl::lit_c<'|'>>;
+ using CommaFile = File<','>;
+ using ColonFile = File<':'>;
+ using SemiColonFile = File<';'>;
+ using TabFile = File<'\t'>;
+ using BarFile = File<'|'>;
} \ No newline at end of file
generated by our cgit fork (git 2.39.0) at 2024-01-23 02:24:14 +0100