[project @ 1999-12-10 15:59:41 by sewardj]
Major improvements in interface processing, and minor supporting improvements to CT-storage management. * Make the iface parser return the complete interface as a single tree, which is processed later. Added abs syntax tags I_INTERFACE .. I_VALUE to support this. * Add tagged ("z") 2,3,4,5 tuples. Because they are tagged, they can't be confused with lists, etc. Selectors zfst, zsnd ... zsel45, zsel55 check tags first. Iface processing uses z-tuples wherever it can. * Add unap as a safe "inverse" of ap; it checks tags. So unap(TAG1, ap(TAG2,cell)) == cell but only if TAG1==TAG2, else assertion failure. * In interface.c, clean up the startGHC*/endGHC* functions. processInterfaces() is the top-level driver; it makes 4 passes over the supplied iface trees. * Throw away iface symbols not mentioned in export lists. * Use iface export lists to construct both the export and eval environments for a module. * Don't use Texts to refer to things. Instead use ConId and VarId. Added ConId and VarId as synonyms for Cell in storage.h. * Add findSimpleInstance in storage.c.