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Re: [gfortran] Scanner rewrite, fix for PR13702


> this is the rewrite of the scanner and file handling that I ported from

Ok.

Paul

> 2004-05-11  Tobias Schlüter <tobias.schlueter@physik.uni-muenchen.de>
>
> 	PR fortran/13702
> 	(Port from g95)
> 	* gfortran.h (gfc_linebuf): New typedef.
> 	(linebuf): Remove.
> 	(gfc_file): Revamped, use new gfc_linebuf.
> 	(locus): Revamped, use new types.
> 	(gfc_current_file): Remove.
> 	(gfc_current_form, gfc_source_file): New global variables.
> 	* match.c (gfc_match_space, gfc_match_strings): Use
> 	gfc_current_form to find source form.
> 	* module.c (gfc_dump_module): Use gfc_source_file when printing
> 	module header.
> 	* error.c (show_locus, show_loci) Use new data structures to print
> 	locus.
> 	* scanner.c (first_file, first_duplicated_file, gfc_current_file):
> 	Remove.
> 	(file_head, current_file, gfc_current_form, line_head, line_tail,
> 	gfc_current_locus1, gfc_source_file): New global variables.
> 	(gfc_scanner_init1): Set new global variables.
> 	(gfc_scanner_done1): Free new data structures.
> 	(gfc_current_locus): Return pointer to gfc_current_locus1.
> 	(gfc_set_locus): Set gfc_current_locus1.
> 	(gfc_at_eof): Set new variables.
> 	(gfc_at_bol, gfc_at_eol, gfc_advance_line, gfc_next_char): Adapt
> 	to new locus structure.
> 	(gfc_check_include): Remove.
> 	(skip_free_comments, skip_fixed_comments): Use gfc_current_locus1.
> 	(gfc_skip_comments): Use gfc_current_form, find locus with
> 	gfc_current_locus1.
> 	(gfc_next_char): Use gfc_current_form.
> 	(gfc_peek_char, gfc_gobble_whitespace): Use gfc_current_locus1.
> 	(load_line): Use gfc_current_form. Recognize ^Z as EOF. Fix
> 	comment formatting.
> 	(get_file): New function.
> 	(preprocessor_line, include_line): New functions.
> 	(load_file): Move down, rewrite to match new data structures.
> 	(gfc_new_file): Rewrite to match new data structures.
> 	* parse.c (next_statement): Remove code which is now useless. Use
> 	gfc_source_form and gfc_source_file where appropriate.
> 	* trans-decl.c (gfc_get_label_decl): adapt to new data structures
> 	when determining locus of frontend code.
> 	* trans-io.c (set_error_locus): Same.
> 	* trans.c (gfc_get_backend_locus, gfc_set_backend_locus): Likewise.
> 	* lang-specs.h (@f77-cpp-input, @f95-cpp-input): Remove '-P' from
> 	preprocessor flags.
> 	(all): Add missing initializers.


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