init

src/meson.build

@@ -0,0 +1,3 @@
+inc += include_directories('.')
+
+subdir('string')

src/string/meson.build

@@ -0,0 +1,14 @@
+headers = ['string.hpp']
+sources = ['string.cpp']
+
+lib = library(
+  'string',
+  include_directories : inc,
+  install : true,
+  sources: [headers, sources]
+)
+
+string_dep = declare_dependency(
+  include_directories: inc,
+  link_with: lib
+)

src/string/string.cpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <string>
+
+#ifndef ERROR_EXCEPTION
+#define ERROR_EXCEPTION_1(in) { auto trace = std::string(LOGGER___TRACE_ON); \
+                                 throw tools::error::error_exception(in, in, "no internal system error", trace); }
+#define ERROR_EXCEPTION_2(in, out) { auto trace = std::string(LOGGER___TRACE_ON); \
+                                         throw tools::error::error_exception(in, out, "no internal system err", trace); }
+#define ERROR_EXCEPTION_3(in, out, err) { auto trace = std::string(LOGGER___TRACE_ON); \
+                                              throw tools::error::error_exception(in, out, err, trace); }
+#define GET_MACRO(_1,_2,_3,NAME, ...) NAME
+#define ERROR_EXCEPTION(...) GET_MACRO(__VA_ARGS__, ERROR_EXCEPTION_3, ERROR_EXCEPTION_2, ERROR_EXCEPTION_1)(__VA_ARGS__)
+#endif
+
+namespace tools::error
+{
+  // implementation error exception
+  // example: if (1 < 0) ERROR_EXCEPTION("it's very strange"); 
+  // try {} 
+  // catch(tools::error::error_exception& e) {}
+  struct error_exception : public std::exception
+  {
+    error_exception(std::string in, std::string out, std::string error, std::string trace) : in { in }, out { out }, error { error }, trace { trace } {};
+    std::string in;
+    std::string out;
+    std::string error;
+    std::string trace;
+    const char* what () const throw () { return in.c_str(); }
+  };
+}
+

src/string/string.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <string>
+
+namespace hack
+{
+}