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8960e1bc83
"compiler.h" already includes a bunch of common include files. There is absolutely no reason to duplicate them in individual files, and in fact it robs us of central control of how these files are used. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2018 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* srcfile.c - keep track of the current position in the input stream
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*/
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#include "compiler.h"
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#include "nasmlib.h"
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#include "hashtbl.h"
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#include "srcfile.h"
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struct src_location _src_here;
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static struct hash_table filename_hash;
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void src_init(void)
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{
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}
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void src_free(void)
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{
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hash_free_all(&filename_hash, false);
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}
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/*
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* Set the current filename, returning the old one. The input
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* filename is duplicated if needed.
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*/
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const char *src_set_fname(const char *newname)
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{
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struct hash_insert hi;
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const char *oldname;
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void **dp;
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if (newname) {
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dp = hash_find(&filename_hash, newname, &hi);
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if (dp) {
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newname = (const char *)(*dp);
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} else {
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newname = nasm_strdup(newname);
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hash_add(&hi, newname, (void *)newname);
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}
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}
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oldname = _src_here.filename;
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_src_here.filename = newname;
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return oldname;
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}
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void src_set(int32_t line, const char *fname)
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{
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src_set_fname(fname);
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src_set_linnum(line);
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}
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struct src_location src_update(struct src_location whence)
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{
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struct src_location oldhere = _src_here;
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src_set_fname(whence.filename);
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src_set_linnum(whence.lineno);
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return oldhere;
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}
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