CommandsRepository

src/coders/commons.cpp

@@ -154,8 +154,13 @@ void BasicParser::expectNewLine() {
     }
 }
 
-void BasicParser::goBack() {
-    if (pos) pos--;
+void BasicParser::goBack(size_t count) {
+    if (pos < count) {
+        throw std::runtime_error("pos < jump");
+    }
+    if (pos) { 
+        pos -= count;
+    }
 }
 
 char BasicParser::peek() {

src/coders/commons.hpp

@@ -86,7 +86,7 @@ protected:
     void expect(const std::string& substring);
     bool isNext(const std::string& substring);
     void expectNewLine();
-    void goBack();
+    void goBack(size_t count=1);
 
     int64_t parseSimpleInt(int base);
     dynamic::Value parseNumber(int sign);