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Unified Diff: bison/src/bison/2.4.1/bison-2.4.1-src/src/location.c

Issue 10807020: Add native Windows binary for bison. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 8 years, 5 months ago
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Index: bison/src/bison/2.4.1/bison-2.4.1-src/src/location.c
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/src/location.c (revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/src/location.c (revision 0)
@@ -0,0 +1,132 @@
+/* Locations for Bison
+ Copyright (C) 2002, 2005, 2006, 2007 Free Software Foundation, Inc.
+
+ This file is part of Bison, the GNU Compiler Compiler.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include "system.h"
+
+#include <mbswidth.h>
+#include <quotearg.h>
+
+#include "complain.h"
+#include "location.h"
+
+location const empty_location = EMPTY_LOCATION_INIT;
+
+/* If BUF is null, add BUFSIZE (which in this case must be less than
+ INT_MAX) to COLUMN; otherwise, add mbsnwidth (BUF, BUFSIZE, 0) to
+ COLUMN. If an overflow occurs, or might occur but is undetectable,
+ return INT_MAX. Assume COLUMN is nonnegative. */
+
+static inline int
+add_column_width (int column, char const *buf, size_t bufsize)
+{
+ size_t width;
+ unsigned int remaining_columns = INT_MAX - column;
+
+ if (buf)
+ {
+ if (INT_MAX / 2 <= bufsize)
+ return INT_MAX;
+ width = mbsnwidth (buf, bufsize, 0);
+ }
+ else
+ width = bufsize;
+
+ return width <= remaining_columns ? column + width : INT_MAX;
+}
+
+/* Set *LOC and adjust scanner cursor to account for token TOKEN of
+ size SIZE. */
+
+void
+location_compute (location *loc, boundary *cur, char const *token, size_t size)
+{
+ int line = cur->line;
+ int column = cur->column;
+ char const *p0 = token;
+ char const *p = token;
+ char const *lim = token + size;
+
+ loc->start = *cur;
+
+ for (p = token; p < lim; p++)
+ switch (*p)
+ {
+ case '\n':
+ line += line < INT_MAX;
+ column = 1;
+ p0 = p + 1;
+ break;
+
+ case '\t':
+ column = add_column_width (column, p0, p - p0);
+ column = add_column_width (column, NULL, 8 - ((column - 1) & 7));
+ p0 = p + 1;
+ break;
+
+ default:
+ break;
+ }
+
+ cur->line = line;
+ cur->column = column = add_column_width (column, p0, p - p0);
+
+ loc->end = *cur;
+
+ if (line == INT_MAX && loc->start.line != INT_MAX)
+ warn_at (*loc, _("line number overflow"));
+ if (column == INT_MAX && loc->start.column != INT_MAX)
+ warn_at (*loc, _("column number overflow"));
+}
+
+
+/* Output to OUT the location LOC.
+ Warning: it uses quotearg's slot 3. */
+void
+location_print (FILE *out, location loc)
+{
+ int end_col = 0 < loc.end.column ? loc.end.column - 1 : 0;
+ 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, end_col);
+ else if (loc.start.line < loc.end.line)
+ fprintf (out, "-%d.%d", loc.end.line, end_col);
+ else if (loc.start.column < end_col)
+ fprintf (out, "-%d", end_col);
+}
+
+void
+boundary_set_from_string (boundary *bound, char *loc_str)
+{
+ /* Must search in reverse since the file name field may
+ * contain `.' or `:'. */
+ char *delim = strrchr (loc_str, '.');
+ aver (delim);
+ *delim = '\0';
+ bound->column = atoi (delim+1);
+ delim = strrchr (loc_str, ':');
+ aver (delim);
+ *delim = '\0';
+ bound->line = atoi (delim+1);
+ bound->file = uniqstr_new (loc_str);
+}
Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\src\location.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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