Add native Windows binary for bison.

bison/src/bison/2.4.1/bison-2.4.1-src/src/location.c

+/* 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);
+}