1 files changed, 54 insertions, 0 deletions
diff --git a/src/newgrf_string_type.h b/src/newgrf_string_type.h
new file mode 100644
index 000000000..4a0bdd790
--- /dev/null
+++ b/src/newgrf_string_type.h
@@ -0,0 +1,54 @@
+/* $Id$ */
+
+/** @file newgrf_string_type.h */
+
+#ifndef NEWGRF_STRING_TYPE_H
+#define NEWGRF_STRING_TYPE_H
+
+#include "strings_type.h"
+
+/**
+ * A string with the required information to perform a GRF string remapping.
+ */
+struct GRFMappedStringID
+{
+private:
+	/** The GRF ID associated to the to-be-remapped string */
+	uint32 grfid;
+	/** The string; when grfid != 0 it should be remapped */
+	StringID string;
+
+public:
+	/**
+	 * Create the struct.
+	 * @param str    the string to store (or remap)
+	 * @param grf_id the GRF to remap it with
+	 */
+	GRFMappedStringID(StringID str, uint32 grf_id) : grfid(grf_id), string(str) {}
+
+	/**
+	 * An empty string.
+	 */
+	GRFMappedStringID() {}
+
+	/** Cast operator, returns the string */
+	inline operator StringID() const
+	{
+		return string;
+	}
+
+	/** Assigns the string and resets the GRF ID. */
+	GRFMappedStringID& operator = (StringID str)
+	{
+		string = str;
+		grfid = 0;
+		return *this;
+	}
+
+	/**
+	 * Map the string.
+	 */
+	void MapString();
+};
+
+#endif /* NEWGRF_STRING_TYPE_H */