moved scanner elsehere

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);
+}