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* src/location.c: Include <quotearg.h>.

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(empty_location): Now const.
(location_print): New function.  Follow the recommendation of the
GNU Coding Standards for locations that span file boundaries.
This commit is contained in:
Paul Eggert
2002-12-07 05:57:32 +00:00
parent 5fcdb07b70
commit b17a1fc541
1 changed files with 22 additions and 2 deletions
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24
src/location.c
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@@ -1,5 +1,5 @@
/* Locations for Bison /* Locations for Bison
Copyright (C) 2002 Free Software Foundation, Inc. Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler. This file is part of Bison, the GNU Compiler Compiler.
@@ -20,5 +20,25 @@
#include "system.h" #include "system.h"
#include "location.h" #include "location.h"
#include <quotearg.h>
location_t empty_location = { NULL, 0, 0, 0, 0 }; location_t const empty_location;
/* Output to OUT the location LOC.
Warning: it uses quotearg's slot 3. */
void
location_print (FILE *out, location_t loc)
{
fprintf (out, "%s:%d.%d",
quotearg_n_style (3, escape_quoting_style, loc.start.file),
loc.start.line, loc.start.column);
if (loc.start.file != loc.end.file)
fprintf (out, "-%s:%d.%d",
quotearg_n_style (3, escape_quoting_style, loc.end.file),
loc.end.line, loc.end.column - 1);
else if (loc.start.line < loc.end.line)
fprintf (out, "-%d.%d", loc.end.line, loc.end.column - 1);
else if (loc.start.column < loc.end.column - 1)
fprintf (out, "-%d", loc.end.column - 1);
}