[ox] Cleanup serialization writers, make MC and Claw use Writer_c

deps/ox/src/ox/claw/test/tests.cpp

@@ -139,7 +139,7 @@ static std::map<std::string_view, ox::Error(*)()> tests = {
 				// This test doesn't confirm much, but it does show that the writer
 				// doesn't segfault
 				TestStruct ts;
-				oxReturnError(ox::writeClaw(&ts, ox::ClawFormat::Metal));
+				oxReturnError(ox::writeClaw(ts, ox::ClawFormat::Metal));
 				return OxError(0);
 			}
 		},

deps/ox/src/ox/claw/write.hpp

@@ -14,6 +14,7 @@
 #endif
 #include <ox/std/buffer.hpp>
 #include <ox/std/string.hpp>
+#include <ox/std/stringview.hpp>
 
 #include "format.hpp"
 
@@ -27,7 +28,11 @@ struct TypeInfoCatcher {
 	int version = 0;
 
 	template<typename T = void>
-	constexpr void setTypeInfo(const char *name = T::TypeName, int v = T::TypeVersion, const Vector<String>& = {}, std::size_t = 0) noexcept {
+	constexpr void setTypeInfo(
+			const char *name = T::TypeName,
+			int v = T::TypeVersion,
+			const Vector<String>& = {},
+			std::size_t = 0) noexcept {
 		this->name = name;
 		this->version = v;
 	}
@@ -53,57 +58,64 @@ struct type_version<T, decltype((void) T::TypeVersion, -1)> {
 };
 
 template<typename T>
-constexpr const char *getTypeName(T *t) noexcept {
+constexpr const char *getTypeName(const T *t) noexcept {
 	TypeInfoCatcher tnc;
 	oxIgnoreError(model(&tnc, t));
 	return tnc.name;
 }
 
 template<typename T>
-constexpr int getTypeVersion(T *t) noexcept {
+constexpr int getTypeVersion(const T *t) noexcept {
 	TypeInfoCatcher tnc;
 	oxIgnoreError(model(&tnc, t));
 	return tnc.version;
 }
 
 template<typename T>
-Result<String> writeClawHeader(T *t, ClawFormat fmt) noexcept {
-	String out;
+ox::Error writeClawHeader(Writer_c auto &writer, T *t, ClawFormat fmt) noexcept {
 	switch (fmt) {
 		case ClawFormat::Metal:
-			out += "M2;";
+			oxReturnError(write(&writer, "M2;"));
 			break;
 		case ClawFormat::Organic:
-			out += "O1;";
+			oxReturnError(write(&writer, "O1;"));
 			break;
 		default:
 			return OxError(1);
 	}
-	out += detail::getTypeName(t);
-	out += ";";
+	oxReturnError(write(&writer, detail::getTypeName(t)));
+	oxReturnError(writer.put(';'));
 	const auto tn = detail::getTypeVersion(t);
 	if (tn > -1) {
-		out += tn;
+		oxReturnError(ox::itoa(tn, writer));
 	}
-	out += ";";
-	return out;
+	oxReturnError(writer.put(';'));
+	return {};
 }
 
 }
 
-Result<Buffer> writeClaw(auto *t, ClawFormat fmt = ClawFormat::Metal) {
-	oxRequire(header, detail::writeClawHeader(t, fmt));
+Result<Buffer> writeClaw(
+		auto &t,
+		ClawFormat fmt = ClawFormat::Metal,
+		std::size_t buffReserveSz = 2 * units::KB) noexcept {
+	Buffer out(buffReserveSz);
+	BufferWriter bw(&out, 0);
+	oxReturnError(detail::writeClawHeader(bw, &t, fmt));
 #ifdef OX_USE_STDLIB
-	oxRequire(data, fmt == ClawFormat::Metal ? writeMC(t) : writeOC(t));
+	if (fmt == ClawFormat::Metal) {
+		oxReturnError(writeMC(bw, t));
+	} else if (fmt == ClawFormat::Organic) {
+		oxRequire(data, writeOC(t));
+		oxReturnError(bw.write(data.data(), data.size()));
+	}
 #else
 	if (fmt != ClawFormat::Metal) {
 		return OxError(1, "OC is not supported in this build");
 	}
-	oxRequire(data, writeMC(t));
+	oxReturnError(writeMC(bw, t));
 #endif
-	Buffer out(header.len() + data.size());
-	memcpy(out.data(), header.data(), header.len());
-	memcpy(out.data() + header.len(), data.data(), data.size());
+	out.resize(bw.tellp());
 	return out;
 }
 

deps/ox/src/ox/mc/write.hpp

@@ -31,7 +31,7 @@ template<Writer_c Writer>
 class MetalClawWriter {
 
 	private:
-		ox::Vector<uint8_t, 16> m_presenceMapBuff;
+		ox::Vector<uint8_t, 16> m_presenceMapBuff{};
 		FieldBitmap m_fieldPresence;
 		int m_field = 0;
 		int m_unionIdx = -1;

deps/ox/src/ox/oc/test/tests.cpp

@@ -132,7 +132,7 @@ const std::map<std::string_view, ox::Error(*)()> tests = {
 				// This test doesn't confirm much, but it does show that the writer
 				// doesn't segfault
 				TestStruct ts;
-				return ox::writeOC(&ts).error;
+				return ox::writeOC(ts).error;
 			}
 		},
 		{
@@ -153,7 +153,7 @@ const std::map<std::string_view, ox::Error(*)()> tests = {
 				testIn.Struct.Int = 300;
 				testIn.Struct.String = "Test String 2";
 
-				auto [oc, writeErr] = ox::writeOC(&testIn);
+				auto [oc, writeErr] = ox::writeOC(testIn);
 				oxAssert(writeErr, "writeOC failed");
 				oxOutf("{}\n", oc.data());
 				auto [testOut, readErr] = ox::readOC<TestStruct>(oc.data());
@@ -205,7 +205,7 @@ const std::map<std::string_view, ox::Error(*)()> tests = {
 					testIn.Struct.String = "Test String 2";
 					testIn.unionIdx = 1;
 					testIn.Union.Int = 93;
-					oxAssert(ox::writeOC(&testIn).moveTo(&dataBuff), "Data generation failed");
+					oxAssert(ox::writeOC(testIn).moveTo(&dataBuff), "Data generation failed");
 					ox::TypeStore typeStore;
 					auto type = ox::buildTypeDef(&typeStore, &testIn);
 					oxAssert(type.error, "Descriptor write failed");
@@ -254,7 +254,7 @@ const std::map<std::string_view, ox::Error(*)()> tests = {
 				testIn.Struct.Int = 300;
 				testIn.Struct.String = "Test String 2";
 
-				auto [oc, ocErr] = ox::writeOC(&testIn);
+				auto [oc, ocErr] = ox::writeOC(testIn);
 				oxAssert(ocErr, "Data generation failed");
 				ox::TypeStore typeStore;
 				auto type = ox::buildTypeDef(&typeStore, &testIn);

deps/ox/src/ox/oc/write.hpp

@@ -24,7 +24,7 @@ namespace ox {
 
 class OrganicClawWriter {
 
-	friend Result<Buffer> writeOC(auto *val) noexcept;
+	friend Result<Buffer> writeOC(auto &val) noexcept;
 
 	protected:
 		Json::Value m_json;
@@ -242,10 +242,10 @@ Error OrganicClawWriter::field(const char *key, UnionView<U, force> val) noexcep
 	return OxError(0);
 }
 
-Result<Buffer> writeOC(auto *val) noexcept {
+Result<Buffer> writeOC(auto &val) noexcept {
 	OrganicClawWriter writer;
 	ModelHandlerInterface handler(&writer);
-	oxReturnError(model(&handler, val));
+	oxReturnError(model(&handler, &val));
 	Json::StreamWriterBuilder jsonBuilder;
 	const auto str = Json::writeString(jsonBuilder, writer.m_json);
 	Buffer buff(str.size() + 1);

deps/ox/src/ox/std/buffer.hpp

@@ -60,7 +60,7 @@ class BufferWriter {
 		}
 
 		constexpr ox::Error put(char val) noexcept {
-			if (m_it >= m_buff.size()) [[unlikely]] {
+			if (m_it >= m_buff.size()) {
 				m_buff.resize(m_buff.size() + 1);
 			}
 			m_buff[m_it] = val;
@@ -98,9 +98,9 @@ class CharBuffWriter {
 
 	public:
 		template<std::size_t sz>
-		explicit constexpr CharBuffWriter(ox::Array<char, sz> *buff) noexcept:
-			m_cap(buff->size()),
-			m_buff(buff->data()) {
+		explicit constexpr CharBuffWriter(ox::Array<char, sz> &buff) noexcept:
+			m_cap(buff.size()),
+			m_buff(buff.data()) {
 		}
 
 		explicit constexpr CharBuffWriter(char *buff, std::size_t size) noexcept: m_cap(size), m_buff(buff) {

deps/ox/src/ox/std/serialize.hpp

@@ -87,7 +87,7 @@ constexpr ox::Error serialize(Writer_c auto *buff, T val) noexcept requires(is_i
 template<typename T>
 constexpr ox::Result<ox::Array<char, sizeof(T)>> serialize(const T &in) noexcept {
 	ox::Array<char, sizeof(T)> out = {};
-	CharBuffWriter w(&out);
+	CharBuffWriter w(out);
 	oxReturnError(serialize(&w, in));
 	return out;
 };

deps/ox/src/ox/std/stringview.hpp

@@ -280,7 +280,7 @@ using CRStringView = const StringView&;
 [[nodiscard]]
 constexpr bool beginsWith(CRStringView base, CRStringView beginning) noexcept {
 	const auto beginningLen = ox::min(beginning.len(), base.len());
-	return ox_strncmp(base.data(), beginning, beginningLen) == 0;
+	return base.len() >= beginning.len() && ox_strncmp(base.data(), beginning, beginningLen) == 0;
 }
 
 [[nodiscard]]

deps/ox/src/ox/std/strops.hpp

@@ -12,6 +12,7 @@
 #include "math.hpp"
 #include "types.hpp"
 #include "typetraits.hpp"
+#include "writer.hpp"
 
 template<typename T1, typename T2>
 constexpr char *ox_strcpy(T1 dest, T2 src) noexcept {
@@ -125,6 +126,42 @@ constexpr int ox_lastIndexOf(const auto &str, int character, std::size_t maxLen
 	return retval;
 }
 
+namespace ox {
+
+template<typename Integer>
+constexpr ox::Error itoa(Integer v, ox::Writer_c auto &writer) noexcept {
+	if (v) {
+		ox::ResizedInt_t<Integer, 64> mod = 1000000000000000000;
+		ox::ResizedInt_t<Integer, 64> val = v;
+		constexpr auto base = 10;
+		auto it = 0;
+		if (val < 0) {
+			oxReturnError(writer.put('-'));
+			++it;
+		}
+		while (mod) {
+			auto digit = val / mod;
+			val %= mod;
+			mod /= base;
+			if (it || digit) {
+				ox::ResizedInt_t<Integer, 64> start = '0';
+				if (digit >= 10) {
+					start = 'a';
+					digit -= 10;
+				}
+				oxReturnError(writer.put(static_cast<char>(start + digit)));
+				++it;
+			}
+		}
+	} else {
+		// 0 is a special case
+		oxReturnError(writer.put('0'));
+	}
+	return {};
+}
+
+}
+
 template<typename Integer, typename T>
 constexpr T ox_itoa(Integer v, T str) noexcept {
 	if (v) {

deps/ox/src/ox/std/test/CMakeLists.txt

@@ -11,6 +11,7 @@ add_test("[ox/std] ox_memcmp ABCDEFG != HIJKLMN" StdTest "ABCDEFG != HIJKLMN")
 add_test("[ox/std] ox_memcmp HIJKLMN != ABCDEFG" StdTest "HIJKLMN != ABCDEFG")
 add_test("[ox/std] ox_memcmp ABCDEFG == ABCDEFG" StdTest "ABCDEFG == ABCDEFG")
 add_test("[ox/std] ox_memcmp ABCDEFGHI == ABCDEFG" StdTest "ABCDEFGHI == ABCDEFG")
+add_test("[ox/std] itoa" StdTest "itoa")
 add_test("[ox/std] BString" StdTest "BString")
 add_test("[ox/std] String" StdTest "String")
 add_test("[ox/std] Vector" StdTest "Vector")

deps/ox/src/ox/std/test/tests.cpp

@@ -25,6 +25,22 @@ static std::map<ox::String, ox::Error(*)()> tests = {
 			return OxError(0);
 		}
 	},
+	{
+		"itoa",
+		[]() {
+			ox::Array<char, 10> buff;
+			ox::CharBuffWriter bw(buff);
+			oxAssert(ox::itoa(5, bw), "ox::itoa returned Error");
+			oxExpect(ox::StringView(buff.data()), ox::StringView("5"));
+			oxReturnError(bw.seekp(0));
+			oxAssert(ox::itoa(50, bw), "ox::itoa returned Error");
+			oxExpect(ox::StringView(buff.data()), ox::StringView("50"));
+			oxReturnError(bw.seekp(0));
+			oxAssert(ox::itoa(500, bw), "ox::itoa returned Error");
+			oxExpect(ox::StringView(buff.data()), ox::StringView("500"));
+			return ox::Error{};
+		}
+	},
 	{
 		"ABCDEFG != HIJKLMN",
 		[]() {