X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/8bb4c753e2d626ee90460e6d9f9cbaa2cd1f560d..3eb4f1a3e62807125a815dc572da9204b5b51865:/data/location.cc
diff --git a/data/location.cc b/data/location.cc
index a134bfa8..cfbfd76b 100644
--- a/data/location.cc
+++ b/data/location.cc
@@ -1,90 +1,87 @@
-m4_divert(-1)
-
# C++ skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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 2 of the License, or
+# 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, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see .
-m4_include(b4_pkgdatadir/[c++.m4])
+m4_pushdef([b4_copyright_years],
+ [2002-2012])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
-m4_divert(0)dnl
-@output b4_dir_prefix[]position.hh
-b4_copyright([Position class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+m4_divert_push(0)dnl
+@output(b4_dir_prefix[]position.hh@)@
+b4_copyright([Positions for Bison parsers in C++])[
/**
- ** \file position.hh
- ** Define the yy::position class.
+ ** \file ]b4_dir_prefix[position.hh
+ ** Define the ]b4_namespace_ref[::position class.
*/
-#ifndef BISON_POSITION_HH
-# define BISON_POSITION_HH
+]b4_cpp_guard_open([b4_dir_prefix[]position.hh])[
-# include
+# include // std::max
+# include
# include
-namespace yy
-{
+]b4_null_define[
+
+]b4_namespace_open[
/// Abstract a position.
class position
{
public:
-]m4_ifdef([b4_location_constructors], [
+]m4_ifdef([b4_location_constructors], [[
/// Construct a position.
- position ()
- : filename (0), line (1), column (0)
+ explicit position (]b4_percent_define_get([[filename_type]])[* f = YY_NULL,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
+ : filename (f)
+ , line (l)
+ , column (c)
{
}
-])[
+]])[
/// Initialization.
- inline void initialize (]b4_filename_type[* fn)
+ void initialize (]b4_percent_define_get([[filename_type]])[* fn = YY_NULL,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
{
filename = fn;
- line = 1;
- column = 0;
+ line = l;
+ column = c;
}
/** \name Line and Column related manipulators
** \{ */
- public:
/// (line related) Advance to the COUNT next lines.
- inline void lines (int count = 1)
+ void lines (int count = 1)
{
- column = 0;
+ column = ]b4_location_initial_column[u;
line += count;
}
/// (column related) Advance to the COUNT next columns.
- inline void columns (int count = 1)
+ void columns (int count = 1)
{
- int leftmost = 0;
- int current = column;
- if (leftmost <= current + count)
- column += count;
- else
- column = 0;
+ column = std::max (]b4_location_initial_column[u, column + count);
}
/** \} */
- public:
/// File name to which this position refers.
- ]b4_filename_type[* filename;
+ ]b4_percent_define_get([[filename_type]])[* filename;
/// Current line number.
unsigned int line;
/// Current column number.
@@ -120,7 +117,25 @@ namespace yy
{
return begin + -width;
}
+]b4_percent_define_flag_if([[define_location_comparison]], [[
+ /// Compare two position objects.
+ inline bool
+ operator== (const position& pos1, const position& pos2)
+ {
+ return (pos1.line == pos2.line
+ && pos1.column == pos2.column
+ && (pos1.filename == pos2.filename
+ || (pos1.filename && pos2.filename
+ && *pos1.filename == *pos2.filename)));
+ }
+ /// Compare two position objects.
+ inline bool
+ operator!= (const position& pos1, const position& pos2)
+ {
+ return !(pos1 == pos2);
+ }
+]])[
/** \brief Intercept output stream redirection.
** \param ostr the destination output stream
** \param pos a reference to the position to redirect
@@ -133,42 +148,59 @@ namespace yy
return ostr << pos.line << '.' << pos.column;
}
-}
-#endif // not BISON_POSITION_HH]
-@output b4_dir_prefix[]location.hh
-b4_copyright([Location class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+]b4_namespace_close[
+]b4_cpp_guard_close([b4_dir_prefix[]position.hh])
+@output(b4_dir_prefix[]location.hh@)@
+b4_copyright([Locations for Bison parsers in C++])[
/**
- ** \file location.hh
- ** Define the yy::location class.
+ ** \file ]b4_dir_prefix[location.hh
+ ** Define the ]b4_namespace_ref[::location class.
*/
-#ifndef BISON_LOCATION_HH
-# define BISON_LOCATION_HH
+]b4_cpp_guard_open([b4_dir_prefix[]location.hh])[
# include
# include
# include "position.hh"
-namespace yy
-{
+]b4_namespace_open[
/// Abstract a location.
class location
{
public:
]m4_ifdef([b4_location_constructors], [
- /// Construct a location.
- location ()
- : begin (), end ()
+ /// Construct a location from \a b to \a e.
+ location (const position& b, const position& e)
+ : begin (b)
+ , end (e)
+ {
+ }
+
+ /// Construct a 0-width location in \a p.
+ explicit location (const position& p = position ())
+ : begin (p)
+ , end (p)
+ {
+ }
+
+ /// Construct a 0-width location in \a f, \a l, \a c.
+ explicit location (]b4_percent_define_get([[filename_type]])[* f,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
+ : begin (f, l, c)
+ , end (f, l, c)
{
}
])[
/// Initialization.
- inline void initialize (]b4_filename_type[* fn)
+ void initialize (]b4_percent_define_get([[filename_type]])[* f = YY_NULL,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
{
- begin.initialize (fn);
+ begin.initialize (f, l, c);
end = begin;
}
@@ -176,19 +208,19 @@ namespace yy
** \{ */
public:
/// Reset initial location to final location.
- inline void step ()
+ void step ()
{
begin = end;
}
/// Extend the current location to the COUNT next columns.
- inline void columns (unsigned int count = 1)
+ void columns (unsigned int count = 1)
{
end += count;
}
/// Extend the current location to the COUNT next lines.
- inline void lines (unsigned int count = 1)
+ void lines (unsigned int count = 1)
{
end.lines (count);
}
@@ -224,7 +256,21 @@ namespace yy
res.columns (width);
return res;
}
+]b4_percent_define_flag_if([[define_location_comparison]], [[
+ /// Compare two location objects.
+ inline bool
+ operator== (const location& loc1, const location& loc2)
+ {
+ return loc1.begin == loc2.begin && loc1.end == loc2.end;
+ }
+ /// Compare two location objects.
+ inline bool
+ operator!= (const location& loc1, const location& loc2)
+ {
+ return !(loc1 == loc2);
+ }
+]])[
/** \brief Intercept output stream redirection.
** \param ostr the destination output stream
** \param loc a reference to the location to redirect
@@ -236,8 +282,8 @@ namespace yy
position last = loc.end - 1;
ostr << loc.begin;
if (last.filename
- && (!loc.begin.filename
- || *loc.begin.filename != *last.filename))
+ && (!loc.begin.filename
+ || *loc.begin.filename != *last.filename))
ostr << '-' << last;
else if (loc.begin.line != last.line)
ostr << '-' << last.line << '.' << last.column;
@@ -246,8 +292,9 @@ namespace yy
return ostr;
}
-}
+]b4_namespace_close[
-#endif // not BISON_LOCATION_HH]
-m4_divert(-1)
+]b4_cpp_guard_close([b4_dir_prefix[]location.hh])
+m4_divert_pop(0)
+m4_popdef([b4_copyright_years])dnl
m4_changecom([#])