moved scanner elsehere

src/lexer.l

@@ -3,28 +3,7 @@
 %option yyclass="Scanner"
 
 %{
-#include "../build/parser.hpp"
-#include <string>
-
-class Scanner : public yyFlexLexer {
-public:
-    Scanner(std::istream* in) : yyFlexLexer(in) {}
-    
-    int yylex(); 
-
-    int lex(yy::parser::semantic_type* yylval) {
-        this->yylval = yylval;
-        return yylex();
-    }
-    
-private:
-    yy::parser::semantic_type* yylval;
-};
-
-int scanner_lex(yy::parser::semantic_type* yylval) {
-    static Scanner scanner(&std::cin);
-    return scanner.lex(yylval);
-}
+#include "../src/scanner.hpp"
 %}
 
 %%

src/scanner.hpp

@@ -0,0 +1,28 @@
+#pragma once
+#include "../build/parser.hpp"
+#include <string>
+
+class yyFlexLexer;
+
+class Scanner : public yyFlexLexer
+{
+public:
+    Scanner(std::istream *in) : yyFlexLexer(in) {}
+
+    int yylex();
+
+    int lex(yy::parser::semantic_type *yylval)
+    {
+        this->yylval = yylval;
+        return yylex();
+    }
+
+private:
+    yy::parser::semantic_type *yylval;
+};
+
+int scanner_lex(yy::parser::semantic_type *yylval)
+{
+    static Scanner scanner(&std::cin);
+    return scanner.lex(yylval);
+}