8a88ad8bad
Currently, dt_from_source() uses push_input_file() to set up the initial input file for the lexer. That sounds sensible - put the outermost input file at the bottom of the stack - until you realise that what it *actually* does is pushes the current, uninitialized, lexer input state onto the stack, then sets up the new lexer input. That necessitates an extra check in pop_input_file(), rather than signalling termination in the natural way when the include stack is empty, it has to check when it pops the bogus uninitialized state off the stack. Ick. With that fixed, push_input_file(), pop_input_file() and incl_file_stack itself become local to the lexer, so make them static. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*
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* Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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/*
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* Augment the standard YYLTYPE with a filenum index into an
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* array of all opened filenames.
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*/
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#include <stdio.h>
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struct dtc_file {
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char *dir;
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const char *name;
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FILE *file;
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};
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#if ! defined(YYLTYPE) && ! defined(YYLTYPE_IS_DECLARED)
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typedef struct YYLTYPE {
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int first_line;
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int first_column;
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int last_line;
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int last_column;
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struct dtc_file *file;
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} YYLTYPE;
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#define YYLTYPE_IS_DECLARED 1
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#define YYLTYPE_IS_TRIVIAL 1
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#endif
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/* Cater to old parser templates. */
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#ifndef YYID
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#define YYID(n) (n)
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#endif
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#define YYLLOC_DEFAULT(Current, Rhs, N) \
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do \
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if (YYID (N)) \
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{ \
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(Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
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(Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
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(Current).last_line = YYRHSLOC (Rhs, N).last_line; \
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(Current).last_column = YYRHSLOC (Rhs, N).last_column; \
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(Current).file = YYRHSLOC (Rhs, N).file; \
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} \
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else \
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{ \
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(Current).first_line = (Current).last_line = \
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YYRHSLOC (Rhs, 0).last_line; \
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(Current).first_column = (Current).last_column = \
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YYRHSLOC (Rhs, 0).last_column; \
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(Current).file = YYRHSLOC (Rhs, 0).file; \
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} \
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while (YYID (0))
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extern void yyerror(char const *);
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extern void yyerrorf(char const *, ...) __attribute__((format(printf, 1, 2)));
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extern struct dtc_file *srcpos_file;
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struct search_path {
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const char *dir; /* NULL for current directory */
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struct search_path *prev, *next;
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};
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extern struct dtc_file *dtc_open_file(const char *fname,
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const struct search_path *search);
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extern void dtc_close_file(struct dtc_file *file);
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