Fix tokenizer int overflow

src/include/types.h

@@ -197,6 +197,7 @@ enum class ErrorType {
     
     // Lexing
     UnknownToken,
+    IntegerTooLarge,
 
     // Parsing
     EmptyInput,

src/tokenize.cpp

@@ -221,9 +221,15 @@ vector<Token> tokenize(vector<string> input, int initial_line) {
             }
 
             if (regex_search(str, m, INT_REGEX, regex_constants::match_continuous)) {
+                int val;
+                try { val = stoi(m.str()); }
+                catch (const out_of_range& e) {
+                    throw SyntaxError(ErrorType::IntegerTooLarge, pos);
+                }
+
                 Token token = {
                     .type = TokenType::Litteral,
-                    .data = stoi(m.str()),
+                    .data = val,
                     .pos = pos
                 };
                 tokens.emplace_back(token);