#  mkkwd.icn
#
#  reads:   standard input  (typically ../runtime/keywords.r) 
#
#  writes:  keyword.c
#	    keyword.h
#	    kdefs.h

procedure main()
   local kywds, klist, line, f, k, i
 
   # load keywords
   kywds := set()
   while line := read() do {
      line ? {
 	if ="keyword" then {
 	   tab(find("}")+1)
 	   tab(many(' \t'))
 	   insert(kywds,tab(0))
 	}
      }
   }
   klist := sort(kywds)

   # write defined constants to keyword.h
   hfile := wopen("keyword.h", "Keyword manifest constants")
   lfile := wopen("../h/kdefs.h", "Keyword list")
   i := 0
   every k := !klist do {
      kname := "K_" || map(k,&lcase,&ucase)
      write(hfile, "#define ", left(kname,13), right(i+:=1,3))
      write(lfile, "KDef(", k, ",", kname, ")")
      }
end


#  wopen(fname,comment) -- open file for writing
#
#  opens and returns file; writes header comment; writes message to stdout

procedure wopen(fname,comment)
   local f
   f := open(fname, "w") | stop ("can't open ", fname, " for writing")
   write(f, "/*")
   write(f, " * ", fname, " -- ", comment, ".")
   write(f, " *")
   write(f, " * Created mechanically by mkkwd.icn -- DO NOT EDIT.")
   write(f, " */")
   write(f)
   write("  writing ", fname)
   return f
end