Return function

src/main.cpp

@@ -254,6 +254,13 @@ struct Function {
 */
 map<string, Function> functions;
 
+
+/*
+    funargs vector
+    Contains the arguments to be passed to a function
+*/
+vector<Literal> args;
+
 /*
     error function
     Takes a string (which is a debug message) and prints it to the console, letting the
@@ -373,7 +380,7 @@ Types getType(string in) {
 bool processingFunction = false;
 string procFnName = "";
 
-void exec(vector<Instruction> in) {
+Literal exec(vector<Instruction> in) {
     for (int i = 0; i < in.size(); i++) {
         Instruction l = in[i];
         if (processingFunction) {
@@ -1478,6 +1485,14 @@ void exec(vector<Instruction> in) {
                 Exits a function.
             */
             case Instructions::Return:
+                if (l.args.size() < 1) {
+                    error("Could not find all arguments required for Return inbuilt");
+                }
+                if (holds_alternative<Literal>(l.args[0])) {
+                    return get<Literal>(l.args[0]);
+                } else {
+                    error("First argument of return must be a literal value/value reference");
+                }
                 break;
             /*
                 endfun instruction
@@ -1501,6 +1516,8 @@ void exec(vector<Instruction> in) {
                 break;
         }
     }
+    Literal retLiteral;
+    return retLiteral;
 }
 
 /*
@@ -1754,6 +1771,11 @@ int main(int argc, char** argv) {
     while (getline(file, lns)) {
         in += lns += "\n";
     }
-    exec(parser(lexer(in)));
+    Literal ret = exec(parser(lexer(in)));
+    if (holds_alternative<int>(ret.val)) {
+        return get<int>(ret.val);
+    } else {
+        return 0;
+    }
     return 0;
 }