From 87db03e9ffa559eaf5f6b970ad42776f33ae34b2 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 8 Jan 2026 19:03:09 +0100
Subject: dangling

---
 modules/codec/c++/data.hpp       |  3 +-
 modules/codec/c++/data_print.hpp | 94 ++++++++++++++++++++++++++++++++++++++++
 modules/codec/tests/args.cpp     |  2 +-
 modules/codec/tests/forst.cpp    | 18 +++++++-
 modules/codec/tests/print.cpp    | 57 ++++++++++++++++++++++++
 modules/core/c++/test/suite.hpp  |  2 +-
 6 files changed, 172 insertions(+), 4 deletions(-)
 create mode 100644 modules/codec/c++/data_print.hpp
 create mode 100644 modules/codec/tests/print.cpp

diff --git a/modules/codec/c++/data.hpp b/modules/codec/c++/data.hpp
index dca98ac..585501b 100644
--- a/modules/codec/c++/data.hpp
+++ b/modules/codec/c++/data.hpp
@@ -82,8 +82,9 @@ struct native_data_type<schema::Primitive<schema::FloatingPoint, 8>> {
 	using type = double;
 };
 
+// Give a variable for setting the default encoding. Maybe add a static assert to guarantee that this encoding supports immediate access?
 #ifndef FORSTIO_DEFAULT_DATA_ENCODING
-#define FORSTIO_DEFAULT_DATA_ENCODING encode::Native
+#define FORSTIO_DEFAULT_DATA_ENCODING ::saw::encode::Native
 #endif
 
 template<typename T, typename Encoding = FORSTIO_DEFAULT_DATA_ENCODING>
diff --git a/modules/codec/c++/data_print.hpp b/modules/codec/c++/data_print.hpp
new file mode 100644
index 0000000..8eba274
--- /dev/null
+++ b/modules/codec/c++/data_print.hpp
@@ -0,0 +1,94 @@
+#pragma once
+
+#include "data.hpp"
+#include <iostream>
+
+namespace saw {
+namespace impl {
+struct data_print_tab_helper {
+	static void apply(std::ostream& o, uint64_t tabs){
+		for(uint64_t i = 0u; i < tabs; ++i){
+			o<<'\t';
+		}
+	}
+};
+
+template<typename Schema, typename Encode>
+struct data_print_std_helper {
+	static void apply(std::ostream& o, const data<Schema,Encode>& dat){
+		// Blueprint
+		(void)o;
+		(void)dat;
+	}
+};
+
+template<typename T, uint64_t N, typename Encode>
+struct data_print_std_helper<schema::Primitive<T,N>, Encode> {
+	static void apply(std::ostream& o, const data<schema::Primitive<T,N>,Encode>& dat, uint64_t tabs){
+		(void) tabs;
+		// Blueprint
+		o<<dat.get();
+	}
+};
+
+template<typename Encode>
+struct data_print_std_helper<schema::String, Encode> {
+	static void apply(std::ostream& o, const data<schema::String,Encode>& dat, uint64_t tabs){
+		(void) tabs;
+		// Blueprint
+		auto size = dat.size();
+		o<<"\"";
+		for(saw::data<schema::UInt64> i{0u}; i < size; ++i){
+			o<<dat.at(i);
+		}
+		o<<"\"";
+	}
+};
+template<typename T, uint64_t N, typename Encode>
+struct data_print_std_helper<schema::Array<T,N>, Encode> {
+	static void apply(std::ostream& o, const data<schema::Array<T,N>,Encode>& dat, uint64_t tabs){
+		(void) tabs;
+		// Blueprint
+		auto size = dat.size();
+		o<<"\"";
+		for(saw::data<schema::UInt64> i{0u}; i < size; ++i){
+			o<<dat.at(i);
+		}
+		o<<"\"";
+	}
+};
+
+template<typename... Members, typename Encode>
+struct data_print_std_helper<schema::Struct<Members...>, Encode> {
+	template<uint64_t i>
+	static void apply(std::ostream& o, const data<schema::Struct<Members...>,Encode>& dat, uint64_t tabs){
+		if constexpr (i < sizeof...(Members)){
+			using Memb = parameter_pack_type<i,Members...>::type;
+
+			data_print_tab_helper::apply(o,tabs);
+			o<<"- \""<<Memb::KeyLiteral.view()<<"\" : ";
+			data_print_std_helper<typename Memb::ValueType,Encode>::apply(o,dat.template get<Memb::KeyLiteral>(), tabs);
+			o<<"\n";
+			apply<i+1u>(o,dat,tabs);
+		}
+	}
+
+	static void apply(std::ostream& o, const data<schema::Struct<Members...>,Encode>& dat, uint64_t tabs){
+		data_print_tab_helper::apply(o,tabs);
+
+		apply<0u>(o,dat,tabs+1u);
+	}
+};
+
+}
+}
+
+namespace std {
+template<typename Schema, typename Encode>
+inline ostream& operator<<(ostream& o, const saw::data<Schema, Encode>& dat){
+
+	saw::impl::data_print_std_helper<Schema,Encode>::apply(o, dat, 0u);
+
+	return o;
+}
+}
diff --git a/modules/codec/tests/args.cpp b/modules/codec/tests/args.cpp
index f42056a..2b5b14c 100644
--- a/modules/codec/tests/args.cpp
+++ b/modules/codec/tests/args.cpp
@@ -40,7 +40,7 @@ SAW_TEST("Codec Args Decode Basic"){
 	codec<sch::Args<sch::ArgsStruct, sch::ArgsTuple>, encode::Args> args_codec;
 
 	auto eov = args_codec.decode(dat_args, dat_nat);
-	SAW_EOV_EXPECT(eov, "Couldn't decode data. ");
+	SAW_EXPECT_EOV(eov, "Couldn't decode data");
 
 	auto& prog = dat_nat.template get<"program">();
 	auto& str = dat_nat.template get<"args">();
diff --git a/modules/codec/tests/forst.cpp b/modules/codec/tests/forst.cpp
index 1d9c0c3..2bf6442 100644
--- a/modules/codec/tests/forst.cpp
+++ b/modules/codec/tests/forst.cpp
@@ -18,7 +18,7 @@ using TestStruct = Struct<
 using TestArray = Array<
 	TestStruct
 >;
-
+/*
 SAW_TEST("Codec Forst Layer Info"){
 	using namespace saw;
 
@@ -82,5 +82,21 @@ SAW_TEST("Codec Forst Primitive"){
 
 	SAW_EXPECT(val == foo, "Unexpected value");
 }
+
+SAW_TEST("Codec Forst Struct of Primitives"){
+	using namespace saw;
+
+	data<TestStruct, encode::KelForst> test_dat;
+
+	auto& test_a = test_dat.template get<"string">();
+	auto& test_b = test_dat.template get<"number">();
+	auto& test_c = test_dat.template get<"signed">();
+
+	test_b.set(50u);
+	test_c.set(-23);
+	test_a.set("cheese");
+
+}
+*/
 }
 }
diff --git a/modules/codec/tests/print.cpp b/modules/codec/tests/print.cpp
new file mode 100644
index 0000000..695f7a0
--- /dev/null
+++ b/modules/codec/tests/print.cpp
@@ -0,0 +1,57 @@
+#include <forstio/test/suite.hpp>
+#include "../c++/data_print.hpp"
+
+namespace {
+namespace sch {
+using namespace saw::schema;
+
+using TestStruct = Struct<
+	Member<Float64, "foo">,
+	Member<UInt64, "bar">,
+	Member<Int64, "baz">,
+	Member<String, "banana">
+>;
+}
+
+/*
+SAW_TEST("Math/Basic"){
+	using namespace saw;
+
+	data<sch::Vector<sch::Float64,2u>> a;
+	data<sch::Vector<sch::Float64,2u>> b;
+
+	auto c = a + b;
+}
+*/
+
+SAW_TEST("Data Print/Primitive Float64"){
+	using namespace saw;
+
+
+	data<sch::Float64> a{40.1};
+
+	std::stringstream oss;
+	oss<<a;
+
+	auto str = oss.str();
+	SAW_EXPECT(str == std::string_view{"40.1"}, std::string{"Unexpected value: "} + str);
+}
+
+SAW_TEST("Data Print/Struct"){
+	using namespace saw;
+
+
+	data<sch::TestStruct> a;
+
+	auto& banana = a.template get<"banana">();
+
+	banana.set("banned");
+
+	std::stringstream oss;
+	oss<<a;
+
+	auto str = oss.str();
+	std::cout<<str;
+	//SAW_EXPECT(str == std::string_view{"40.1"}, std::string{"Unexpected value: "} + str);
+}
+}
diff --git a/modules/core/c++/test/suite.hpp b/modules/core/c++/test/suite.hpp
index 7be7e87..f1d0662 100644
--- a/modules/core/c++/test/suite.hpp
+++ b/modules/core/c++/test/suite.hpp
@@ -43,7 +43,7 @@ public:
 		throw std::runtime_error{std::string{msg}};\
 	}
 
-#define SAW_EOV_EXPECT(eov_expr, msg_split) \
+#define SAW_EXPECT_EOV(eov_expr, msg_split) \
 	if( (eov_expr.is_error()) ){ \
 		auto& err = eov_expr.get_error(); \
 		std::stringstream sstr; \
-- 
cgit v1.2.3