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+// A Bison parser, made by GNU Bison 3.8.2.
+
+// Locations for Bison parsers in C++
+
+// Copyright (C) 2002-2015, 2018-2021 Free Software Foundation, Inc.
+
+// 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 <https://www.gnu.org/licenses/>.
+
+// As a special exception, you may create a larger work that contains
+// part or all of the Bison parser skeleton and distribute that work
+// under terms of your choice, so long as that work isn't itself a
+// parser generator using the skeleton or a modified version thereof
+// as a parser skeleton. Alternatively, if you modify or redistribute
+// the parser skeleton itself, you may (at your option) remove this
+// special exception, which will cause the skeleton and the resulting
+// Bison output files to be licensed under the GNU General Public
+// License without this special exception.
+
+// This special exception was added by the Free Software Foundation in
+// version 2.2 of Bison.
+
+/**
+ ** \file location.hh
+ ** Define the isc::dhcp::location class.
+ */
+
+#ifndef YY_PARSER4_LOCATION_HH_INCLUDED
+# define YY_PARSER4_LOCATION_HH_INCLUDED
+
+# include <iostream>
+# include <string>
+
+# ifndef YY_NULLPTR
+# if defined __cplusplus
+# if 201103L <= __cplusplus
+# define YY_NULLPTR nullptr
+# else
+# define YY_NULLPTR 0
+# endif
+# else
+# define YY_NULLPTR ((void*)0)
+# endif
+# endif
+
+#line 14 "dhcp4_parser.yy"
+namespace isc { namespace dhcp {
+#line 59 "location.hh"
+
+ /// A point in a source file.
+ class position
+ {
+ public:
+ /// Type for file name.
+ typedef const std::string filename_type;
+ /// Type for line and column numbers.
+ typedef int counter_type;
+
+ /// Construct a position.
+ explicit position (filename_type* f = YY_NULLPTR,
+ counter_type l = 1,
+ counter_type c = 1)
+ : filename (f)
+ , line (l)
+ , column (c)
+ {}
+
+
+ /// Initialization.
+ void initialize (filename_type* fn = YY_NULLPTR,
+ counter_type l = 1,
+ counter_type c = 1)
+ {
+ filename = fn;
+ line = l;
+ column = c;
+ }
+
+ /** \name Line and Column related manipulators
+ ** \{ */
+ /// (line related) Advance to the COUNT next lines.
+ void lines (counter_type count = 1)
+ {
+ if (count)
+ {
+ column = 1;
+ line = add_ (line, count, 1);
+ }
+ }
+
+ /// (column related) Advance to the COUNT next columns.
+ void columns (counter_type count = 1)
+ {
+ column = add_ (column, count, 1);
+ }
+ /** \} */
+
+ /// File name to which this position refers.
+ filename_type* filename;
+ /// Current line number.
+ counter_type line;
+ /// Current column number.
+ counter_type column;
+
+ private:
+ /// Compute max (min, lhs+rhs).
+ static counter_type add_ (counter_type lhs, counter_type rhs, counter_type min)
+ {
+ return lhs + rhs < min ? min : lhs + rhs;
+ }
+ };
+
+ /// Add \a width columns, in place.
+ inline position&
+ operator+= (position& res, position::counter_type width)
+ {
+ res.columns (width);
+ return res;
+ }
+
+ /// Add \a width columns.
+ inline position
+ operator+ (position res, position::counter_type width)
+ {
+ return res += width;
+ }
+
+ /// Subtract \a width columns, in place.
+ inline position&
+ operator-= (position& res, position::counter_type width)
+ {
+ return res += -width;
+ }
+
+ /// Subtract \a width columns.
+ inline position
+ operator- (position res, position::counter_type width)
+ {
+ return res -= width;
+ }
+
+ /** \brief Intercept output stream redirection.
+ ** \param ostr the destination output stream
+ ** \param pos a reference to the position to redirect
+ */
+ template <typename YYChar>
+ std::basic_ostream<YYChar>&
+ operator<< (std::basic_ostream<YYChar>& ostr, const position& pos)
+ {
+ if (pos.filename)
+ ostr << *pos.filename << ':';
+ return ostr << pos.line << '.' << pos.column;
+ }
+
+ /// Two points in a source file.
+ class location
+ {
+ public:
+ /// Type for file name.
+ typedef position::filename_type filename_type;
+ /// Type for line and column numbers.
+ typedef position::counter_type counter_type;
+
+ /// 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 (filename_type* f,
+ counter_type l = 1,
+ counter_type c = 1)
+ : begin (f, l, c)
+ , end (f, l, c)
+ {}
+
+
+ /// Initialization.
+ void initialize (filename_type* f = YY_NULLPTR,
+ counter_type l = 1,
+ counter_type c = 1)
+ {
+ begin.initialize (f, l, c);
+ end = begin;
+ }
+
+ /** \name Line and Column related manipulators
+ ** \{ */
+ public:
+ /// Reset initial location to final location.
+ void step ()
+ {
+ begin = end;
+ }
+
+ /// Extend the current location to the COUNT next columns.
+ void columns (counter_type count = 1)
+ {
+ end += count;
+ }
+
+ /// Extend the current location to the COUNT next lines.
+ void lines (counter_type count = 1)
+ {
+ end.lines (count);
+ }
+ /** \} */
+
+
+ public:
+ /// Beginning of the located region.
+ position begin;
+ /// End of the located region.
+ position end;
+ };
+
+ /// Join two locations, in place.
+ inline location&
+ operator+= (location& res, const location& end)
+ {
+ res.end = end.end;
+ return res;
+ }
+
+ /// Join two locations.
+ inline location
+ operator+ (location res, const location& end)
+ {
+ return res += end;
+ }
+
+ /// Add \a width columns to the end position, in place.
+ inline location&
+ operator+= (location& res, location::counter_type width)
+ {
+ res.columns (width);
+ return res;
+ }
+
+ /// Add \a width columns to the end position.
+ inline location
+ operator+ (location res, location::counter_type width)
+ {
+ return res += width;
+ }
+
+ /// Subtract \a width columns to the end position, in place.
+ inline location&
+ operator-= (location& res, location::counter_type width)
+ {
+ return res += -width;
+ }
+
+ /// Subtract \a width columns to the end position.
+ inline location
+ operator- (location res, location::counter_type width)
+ {
+ return res -= width;
+ }
+
+ /** \brief Intercept output stream redirection.
+ ** \param ostr the destination output stream
+ ** \param loc a reference to the location to redirect
+ **
+ ** Avoid duplicate information.
+ */
+ template <typename YYChar>
+ std::basic_ostream<YYChar>&
+ operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
+ {
+ location::counter_type end_col
+ = 0 < loc.end.column ? loc.end.column - 1 : 0;
+ ostr << loc.begin;
+ if (loc.end.filename
+ && (!loc.begin.filename
+ || *loc.begin.filename != *loc.end.filename))
+ ostr << '-' << loc.end.filename << ':' << loc.end.line << '.' << end_col;
+ else if (loc.begin.line < loc.end.line)
+ ostr << '-' << loc.end.line << '.' << end_col;
+ else if (loc.begin.column < end_col)
+ ostr << '-' << end_col;
+ return ostr;
+ }
+
+#line 14 "dhcp4_parser.yy"
+} } // isc::dhcp
+#line 305 "location.hh"
+
+#endif // !YY_PARSER4_LOCATION_HH_INCLUDED
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