egcs/gcc ChangeLog cpplib.c cpplib.h cppfiles.c

[brolley@cygnus.com]

CVSROOT:	/egcs/carton/cvsfiles
Module name:	egcs
Changes by:	brolley@egcs.cygnus.com	98/11/25 11:56:55

Modified files:
	gcc            : ChangeLog cpplib.c cpplib.h cppfiles.c 

Log message:
	Wed Nov 25 14:54:46 1998  Zack Weinberg  <zack@rabi.phys.columbia.edu>
	
	* cpplib.h: Delete struct import_file.  Add ihash element to
	struct cpp_buffer.  Delete dont_repeat_files and
	import_hash_table elements from cpp_reader; change
	all_include_files to a hash table.  Delete all foobar_include
	/ last_foobar_include elements from struct cpp_options; put
	back four such: quote_include, bracket_include,
	system_include, after_include.  Redo struct file_name_list
	completely.  Add new structure type include_hash.  Add
	prototypes for merge_include_chains and include_hash.  Change
	prototypes for finclude, find_include_file, and
	append_include_chain to match changes below.
	
	* cppfiles.c (simplify_pathname, include_hash,
	remap_filename, merge_include_chains): New functions.
	(add_import, lookup_import, open_include_file): Removed.
	(INO_T_EQ): Define this (copied from cccp.c).
	(hack_vms_include_specification): Remove all calls and #if 0
	out the definition.  It was being called incorrectly and at
	the wrong times.  Until a VMSie can look at this, it's better
	to not pretend to support it.
	(append_include_chain): Change calling convention; now takes
	only one directory at a time, and sets up the data structure
	itself.
	(redundant_include_p): Rewritten - this is now used for all
	include redundancy, whether by #ifndef, #import, or #pragma
	once.  Looks up things in the include hash table.
	(file_cleanup): Decrement pfile->system_include_depth here if
	it's >0.
	(find_include_file): Calling convention changed; now passes
	around a struct include_hash instead of 3 separate parameters.
	Guts ripped out and replaced with new include_hash mechanism.
	(finclude): Calling convention changed as for
	find_include_file.  Error exits pulled out-of-line.  Reformat.
	(safe_read): Return a long, not an int.
	(deps_output): Don't recurse.
	
	* cpplib.c (is_system_include): Deleted.
	(path_include): Fix up call to append_include_chain.
	(do_include): Fix up calls to find_include_file and finclude.
	Clean up dependency output a bit.  Shorten obnoxiously lengthy
	#import warning message.  Don't decrement
	pfile->system_include_depth here.
	(do_pragma): Understand the include_hash structure.  Reformat.
	(do_endif): Correct handling of control macros.  Understand
	the include_hash.
	(cpp_start_read): Fix up calls to finclude.  Call
	merge_include_chains.
	(cpp_handle_option): Fix up calls to append_include_chain.
	Understand the four partial include chains.
	(cpp_finish): Add debugging code (#if 0-ed out) for the
	include_hash.
	(cpp_cleanup): Free the include_hash, not the import hash and
	the all_include and dont_repeat lists which no longer exist.