egcs/gcc ChangeLog cppexp.c cpphash.c cpphash. ...

[brolley@cygnus.com]

CVSROOT:	/egcs/carton/cvsfiles
Module name:	egcs
Changes by:	brolley@egcs.cygnus.com	98/12/15 11:09:20

Modified files:
	gcc            : ChangeLog cppexp.c cpphash.c cpphash.h cpplib.c 
	                 cpplib.h 

Log message:
	1998-12-15  Zack Weinberg  <zack@rabi.phys.columbia.edu>
	
	* cpphash.h (union hash_value): Remove `keydef' member, add a
	`struct hashnode *aschain' member for #assert.
	
	* cpplib.c (struct tokenlist_list, struct
	assertion_hashnode): Delete structure definitions.
	(assertion_install, assertion_lookup, delete_assertion,
	check_assertion, compare_token_lists, reverse_token_list,
	read_token_list, free_token_list): Delete functions.
	(parse_assertion): New function.
	(cpp_cleanup): Don't destroy the assertion_hashtable.
	
	(do_assert): Gut and rewrite.  #assert foo (bar) places
	entries for `#foo' and `#foo(bar)' in the macro hash table,
	type T_ASSERT.  The value union's `aschain' member is used
	to chain all answers for a given predicate together.
	(do_unassert): Also rewritten.  Take an un-asserted
	answer off the chain from its predicate and call
	delete_macro on the hashnode, or walk a predicate chain
	calling delete_macro on all the entries.
	(cpp_read_check_assertion): Simply call parse_assertion to
	get the canonical assertion name, and look that up in the
	hash table.
	
	* cpplib.h (ASSERTION_HASHNODE,ASSERTION_HASHSIZE,assertion_hashtab):
	Removed.
	
	* cpphash.c (install): Use bcopy instead of an explicit loop
	to copy the macro name.
	
	* cppexp.c (cpp_lex): Convert the result of
	cpp_read_check_assertion to a `struct operation' directly;
	don't go through parse_number.