Simple escape sequences

src/main.cpp

@@ -2098,6 +2098,37 @@ Literal exec(vector<Instruction> in, bool executingFunction) {
     return retLiteral;
 }
 
+string interpretEscapeSequences(string input) {
+    string output;
+    for (size_t i = 0; i < input.length(); ++i) {
+        if (input[i] == '\\' && i + 1 < input.length()) {
+            char next = input[i + 1];
+            switch (next) {
+                case 'n': output += '\n'; break;
+                case 't': output += '\t'; break;
+                case 'r': output += '\r'; break;
+                case 'b': output += '\b'; break;
+                case 'f': output += '\f'; break;
+                case 'a': output += '\a'; break;
+                case 'v': output += '\v'; break;
+                case '\\': output += '\\'; break;
+                case '\'': output += '\''; break;
+                case '\"': output += '\"'; break;
+                case '0': output += '\0'; break;
+                default:
+                    output += '\\';
+                    output += next;
+                    break;
+            }
+            ++i;
+        } else {
+            output += input[i];
+        }
+    }
+    return output;
+}
+
+
 /*
     lexer function
     This function takes a string (the user's program) and splits it into smaller chunks
@@ -2297,7 +2328,7 @@ vector<Instruction> parser(vector<vector<string>> in) {
                     case Types::String:
                         {
                             Literal newLiteral;
-                            string str = i.substr(1, i.size() - 2);
+                            string str = interpretEscapeSequences(i.substr(1, i.size() - 2));
                             newLiteral.val = str;
                             newInst.args.push_back(newLiteral);
                         }