6 files changed, 145 insertions, 2 deletions

diff --git a/.nix/derivation.nix b/.nix/derivation.nix
index 4c28c0b..ece180e 100644
--- a/.nix/derivation.nix
+++ b/.nix/derivation.nix
@@ -2,6 +2,7 @@
 , stdenvNoCC
 , scons
 , clang
+, clang-tools
 , forstio
 , kel-unit
 }:
@@ -14,6 +15,7 @@ stdenvNoCC.mkDerivation {
   nativeBuildInputs = [
     scons
     clang
+    clang-tools
   ];
 
   buildInputs = [
diff --git a/SConstruct b/SConstruct
new file mode 100644
index 0000000..b5690d8
--- /dev/null
+++ b/SConstruct
@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import os.path
+import glob
+import re
+
+
+if sys.version_info < (3,):
+    def isbasestring(s):
+        return isinstance(s,basestring)
+else:
+    def isbasestring(s):
+        return isinstance(s, (str,bytes))
+
+def add_kel_source_files(self, sources, filetype, lib_env=None, shared=False, target_post=""):
+
+    if isbasestring(filetype):
+        dir_path = self.Dir('.').abspath
+        filetype = sorted(glob.glob(dir_path+"/"+filetype))
+
+    for path in filetype:
+        target_name = re.sub( r'(.*?)(\.cpp|\.c\+\+)', r'\1' + target_post, path )
+        if shared:
+            target_name+='.os'
+            sources.append( self.SharedObject( target=target_name, source=path ) )
+        else:
+            target_name+='.o'
+            sources.append( self.StaticObject( target=target_name, source=path ) )
+    pass
+
+def isAbsolutePath(key, dirname, env):
+	assert os.path.isabs(dirname), "%r must have absolute path syntax" % (key,)
+
+env_vars = Variables(
+	args=ARGUMENTS
+)
+
+env_vars.Add('prefix',
+	help='Installation target location of build results and headers',
+	default='/usr/local/',
+	validator=isAbsolutePath
+)
+
+env=Environment(ENV=os.environ, variables=env_vars, CPPPATH=[],
+    CPPDEFINES=['SAW_UNIX'],
+    CXXFLAGS=['-std=c++20','-g','-Wall','-Wextra'],
+    LIBS=['forstio-core','forstio-codec'])
+env.__class__.add_source_files = add_kel_source_files
+env.Tool('compilation_db');
+env.cdb = env.CompilationDatabase('compile_commands.json');
+
+env.objects = [];
+env.sources = [];
+env.headers = [];
+env.targets = [];
+
+Export('env')
+SConscript('c++/SConscript')
+
+env.Alias('cdb', env.cdb);
+env.Alias('all', [env.targets]);
+env.Default('all');
+
+env.Alias('install', '$prefix')
diff --git a/c++/SConscript b/c++/SConscript
new file mode 100644
index 0000000..d696204
--- /dev/null
+++ b/c++/SConscript
@@ -0,0 +1,37 @@
+#!/bin/false
+
+import os
+import os.path
+import glob
+
+
+Import('env')
+
+dir_path = Dir('.').abspath
+
+# Environment for base library
+core_env = env.Clone();
+
+core_env.sources = sorted(glob.glob(dir_path + "/*.cpp"));
+core_env.headers = sorted(glob.glob(dir_path + "/*.h"));
+
+env.sources += core_env.sources;
+env.headers += core_env.headers;
+
+
+## Shared lib
+objects = []
+core_env.add_source_files(objects, core_env.sources, shared=False);
+
+# Cavity2D
+core_env.cavity_2d_source = sorted(glob.glob(dir_path + "/examples/cavity_2d.cpp"));
+env.sources += core_env.cavity_2d_source;
+core_env.cavity_2d = core_env.Program('#bin/cavity_2d', [core_env.cavity_2d_source, core_env.objects]);
+
+# Set Alias
+env.Alias('examples', [core_env.cavity_2d]);
+
+env.targets += ['examples'];
+
+# Install
+env.Install('$prefix/bin', ['examples']);
diff --git a/c++/examples/cavity_2d.cpp b/c++/examples/cavity_2d.cpp
new file mode 100644
index 0000000..bb21e96
--- /dev/null
+++ b/c++/examples/cavity_2d.cpp
@@ -0,0 +1,9 @@
+#include "../lattice.h"
+
+#include <forstio/codec/data.h>
+
+int main(){
+	saw::data<schema::Lattice2D<saw::schema::Float32>, saw::encode::Native> lattice{512, 512};
+
+	return 0;
+}
diff --git a/c++/lattice.h b/c++/lattice.h
new file mode 100644
index 0000000..62752e8
--- /dev/null
+++ b/c++/lattice.h
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <forstio/codec/schema.h>
+
+namespace kel {
+namespace lbm {
+namespace schema {
+template<typename T, size_t D>
+using Lattice = Array<T,D>;
+
+template<typename T>
+using Lattice2D = Lattice<T,2>;
+
+template<typename T>
+using Lattice3D = Lattice<T,3>;
+}
+}
+}
+}
diff --git a/default.nix b/default.nix
index f93b364..0ea5cdf 100644
--- a/default.nix
+++ b/default.nix
@@ -1,18 +1,28 @@
 { pkgs ? import <nixpkgs> {}
+, clang ? pkgs.clang_15
+, clang-tools ? pkgs.clang-tools_15
 }:
 
 let
   forstio = (import ((builtins.fetchGit {
     url = "git@git.keldu.de:forstio/forstio";
     ref = "dev";
-  }).outPath + "/default.nix"){}).forstio;
+  }).outPath + "/default.nix"){
+    inherit clang;
+    inherit clang-tools;
+  }).forstio;
 
   kel-unit = (import ((builtins.fetchGit {
     url = "git@git.keldu.de:libs/unit";
     ref = "dev";
-  }).outPath + "/default.nix"){});
+  }).outPath + "/default.nix"){
+    inherit clang;
+    inherit clang-tools;
+  });
 
 in pkgs.callPackage ./.nix/derivation.nix {
   inherit forstio;
   inherit kel-unit;
+  inherit clang;
+  inherit clang-tools;
 }