diff --git a/src/parser/parser.h b/src/parser/parser.h
index bee509b..3ac5ff8 100644
--- a/src/parser/parser.h
+++ b/src/parser/parser.h
@@ -1,4 +1,6 @@
 #ifndef PARSER_H
 #define PARSER_H
 
+void parse(const char * filename);
+
 #endif
diff --git a/src/parser/parser.y b/src/parser/parser.y
index ff677a4..8e19272 100644
--- a/src/parser/parser.y
+++ b/src/parser/parser.y
@@ -6,6 +6,7 @@
 
 #define yyerror(msg) handle_error(msg, &yyloc)
 
+extern FILE * yyin;
 int yylex(YYSTYPE *, YYLTYPE *);
 static void handle_error(const char * str, const YYLTYPE * yylloc);
 
@@ -111,3 +112,18 @@ int yywrap(void)
 {
     return 1;
 }
+
+void parse(const char * filename)
+{
+    yyin = fopen(filename, "r");
+    if (yyin == NULL)
+    {
+        fprintf(stderr, "Error opening \"%s\"\n", filename);
+        return;
+    }
+    if (yyparse() != 0)
+    {
+        fprintf(stderr, "Parsing error\n");
+        return;
+    }
+}