many improvements

lang/cem/lint/lpass2/class.h

@@ -0,0 +1,16 @@
+#define	CL_DEF		(1<<0)
+#define	CL_DECL		(1<<1)
+#define	CL_USAGE	(1<<2)
+
+#define	CL_FUNC		(1<<3)
+#define	CL_VAR		(1<<4)
+
+#define	CL_LIB		(1<<5)
+#define	CL_EXT		(1<<6)
+#define	CL_IMPL		(1<<7)
+#define	CL_STAT		(1<<8)
+
+extern int class[];
+
+#define	is_class(id,cl)	((class[(id)->id_class-'a'] & (cl)) == (cl))
+