Adds backward to REPL for better error logging.

CMakeLists.txt

@@ -40,9 +40,10 @@ endif ()
 
 if (REPL)
     # Create Test executable
-    file(GLOB_RECURSE REPL_FILES "repl/*.cpp" "repl/*.hpp")
+    file(GLOB_RECURSE REPL_FILES "repl/*.cpp" "repl/*.hpp" "extern/backward.cpp")
     add_executable(MalachScriptREPL ${REPL_FILES})
-    target_link_libraries(MalachScriptREPL PUBLIC MalachScript cursesw)
+    target_compile_definitions(MalachScriptREPL PRIVATE BACKWARD_HAS_DW)
+    target_link_libraries(MalachScriptREPL PUBLIC MalachScript cursesw -ldw)
 endif ()
 
 

extern/backward.cpp

@@ -0,0 +1,42 @@
+// Pick your poison.
+//
+// On GNU/Linux, you have few choices to get the most out of your stack trace.
+//
+// By default you get:
+//	- object filename
+//	- function name
+//
+// In order to add:
+//	- source filename
+//	- line and column numbers
+//	- source code snippet (assuming the file is accessible)
+
+// Install one of the following libraries then uncomment one of the macro (or
+// better, add the detection of the lib and the macro definition in your build
+// system)
+
+// - apt-get install libdw-dev ...
+// - g++/clang++ -ldw ...
+#define BACKWARD_HAS_DW 1
+
+// - apt-get install binutils-dev ...
+// - g++/clang++ -lbfd ...
+// #define BACKWARD_HAS_BFD 1
+
+// - apt-get install libdwarf-dev ...
+// - g++/clang++ -ldwarf ...
+// #define BACKWARD_HAS_DWARF 1
+
+// Regardless of the library you choose to read the debug information,
+// for potentially more detailed stack traces you can use libunwind
+// - apt-get install libunwind-dev
+// - g++/clang++ -lunwind
+// #define BACKWARD_HAS_LIBUNWIND 1
+
+#include "backward.hpp"
+
+namespace backward {
+
+    backward::SignalHandling sh;
+
+} // namespace backward

repl/main.cpp

@@ -90,6 +90,7 @@ void ParseAndUpdate(const std::vector<std::u8string> lines, WINDOW* diagnosticsW
     wrefresh(parsedWindow);
 
     UpdateScriptWithParseInfo(inputWindow, script, diag, firstToken);
+    delete parsedResult;
 }
 
 int main([[maybe_unused]] int argc, [[maybe_unused]] const char* argv[]) {