Persistent line number

src/include/input.h

@@ -8,6 +8,6 @@ using namespace std;
 /*
     Retrieves user input
 */
-vector<string> get_input();
+vector<string> get_input(vector<string> history);
 
 #endif

src/include/tokenize.h

@@ -34,7 +34,7 @@ public:
 /*
     Parses a string into a vector of tokens
 */
-vector<Token> tokenize(vector<string> str);
+vector<Token> tokenize(vector<string> str, int initial_line=0);
 
 /*
     Format and print a Token

src/input.cpp

@@ -8,11 +8,10 @@ using namespace std;
 
 
 
-vector<string> get_input() {
+vector<string> get_input(vector<string> input) {
     string buffer;
-    vector<string> input;
 
-    int line_num = 0;
+    int line_num = input.size();
     while (1) {
         line_num++;
         printf(BOLD "%4d " RESET , line_num);

src/main.cpp

@@ -25,8 +25,9 @@ int main(int argc, char* argv[]) {
     vector<Token> tokens;
     while (true) {
         try {
-            input = get_input();
+            int initial_line = input.size();
-            tokens = tokenize(input);
+            input = get_input(input);
+            tokens = tokenize(input, initial_line);
 
             Node ast = parse(tokens);
 

src/tokenize.cpp

@@ -64,10 +64,10 @@ void _debug_print_tokens(vector<Token> tokens) {
     cout << endl;
 }
 
-vector<Token> tokenize(vector<string> input) {
+vector<Token> tokenize(vector<string> input, int initial_line) {
     vector<Token> tokens;
 
-    for (int i = 0; i < int(input.size()); i++) {
+    for (int i = initial_line; i < int(input.size()); i++) {
         string line = input[i];
         int j = 0;