minor changes

include/lexer/Cursor.h

@@ -1,2 +1,23 @@
 #pragma once
 
+#include <string>
+
+namespace lexer {
+// controlled character stream access
+class Cursor {
+private:
+    const std::string &source;
+    int position;     // current index in string
+    int line;         // current index of line
+    int column;       // 
+
+public:
+    char current();         // returns current symbol
+
+    char peek(int offset);  // 
+    void advance();
+
+    bool eol() const;
+    bool eof() const;
+};
+}

include/lexer/Token.h

@@ -6,7 +6,7 @@
 namespace lexer {
     struct Token {
         TokenKind kind;
-        std::string lexeme;
+        std::string value;
 
         int line;
         int column;