add version control

src/main.cpp

@@ -6,6 +6,7 @@
 #include "parser.h"
 #include "ast_printer.h"
 #include "codegen.h"
+#include "version.h"
 #include <llvm/Support/FileSystem.h>
 #include <llvm/Support/raw_ostream.h>
 
@@ -167,7 +168,7 @@ void* sun_read_csv(char* filename, char* separator, char* quote) {
 )";
 
 void printUsage() {
-    std::cout << "Sun Language Compiler v0.1.0" << std::endl;
+    std::cout << "Sun Language Compiler v" << SUN_VERSION << std::endl;
     std::cout << "Usage: sun <filename> [options]" << std::endl;
     std::cout << "Options:" << std::endl;
     std::cout << "  -o <file>       Specify output executable name" << std::endl;
@@ -183,7 +184,7 @@ int main(int argc, char* argv[]) {
 
     std::string arg1 = argv[1];
     if (arg1 == "-v" || arg1 == "--version") {
-        std::cout << "Sun Language Compiler v0.1.0" << std::endl;
+        std::cout << "Sun Language Compiler v" << SUN_VERSION << std::endl;
         return 0;
     }
     if (arg1 == "-h" || arg1 == "--help") {

src/version.h

@@ -0,0 +1,6 @@
+#ifndef SUN_VERSION_H
+#define SUN_VERSION_H
+
+#define SUN_VERSION "0.3.0"
+
+#endif // SUN_VERSION_H