Always pass the script string around by reference

src/Parser/Lexer.cpp

@@ -5,15 +5,9 @@
 
 #include "Lexer.hpp"
 
-Lexer::Lexer(string* scriptString, class Script* script) {
-    this -> _scriptString = scriptString;
-    this->_scriptSize = scriptString->size();
-    this -> ScriptData = script;
-    this -> _position = 0;
-}
-
-Lexer::Lexer(const string& scriptString, class Script *script) {
-    this -> _scriptString = new string(scriptString);
+Lexer::Lexer(const string& scriptString, class Script* script)
+        : _scriptString(scriptString)
+{
     this->_scriptSize = scriptString.size();
     this -> ScriptData = script;
     this -> _position = 0;
@@ -38,7 +32,7 @@ vector<IToken*> Lexer::Lex() {
 char Lexer::Peek(){
     if (Lexer::_position >= this -> _scriptSize)
         return '\0';
-    return this -> _scriptString->at(Lexer::_position);
+    return this -> _scriptString.at(Lexer::_position);
 }
 
 char Lexer::Next(){
@@ -200,7 +194,7 @@ IToken * Lexer::LexIdentifierOrKeyword() {
         }
     }
 
-    string s = this -> _scriptString->substr(start, end - start + 1);
+    string s = this -> _scriptString.substr(start, end - start + 1);
     switch (HashedString::ConstHash(s.c_str())){
         case HashedString::ConstHash("and"): return new SimpleToken(TokenKind::AndKeyword, start, 3);
         case HashedString::ConstHash("break"): return new SimpleToken(TokenKind::BreakKeyword, start, 5);
@@ -258,7 +252,7 @@ IToken* Lexer::LexString(char c){
         return new SimpleToken(TokenKind::BadToken, start, end -start + 1);
     }
 
-    string s = this -> _scriptString->substr(start + 1, end - start);
+    string s = this -> _scriptString.substr(start + 1, end - start);
     stringstream stream;
     for (int i = 0; i < s.size(); i++){
         c = s[i];

src/Parser/Lexer.hpp

@@ -8,7 +8,7 @@
 using namespace std;
 
 class Lexer {
-    string* _scriptString;
+    const string& _scriptString;
 #ifdef TESTS_BUILD
 public:
 #endif
@@ -24,7 +24,6 @@ public:
     Script* ScriptData;
 
     vector<IToken*> Lex();
-    explicit Lexer(string* scriptString, class Script* script);
     explicit Lexer(const string& scriptString, class Script* script);
 
 };