author | cgandhi <chandradeep.gandhi@sasken.com> |
Tue, 18 May 2010 17:37:12 +0530 | |
changeset 7 | be09cf1f39dd |
permissions | -rw-r--r-- |
7
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1 |
/* A Bison parser, made by GNU Bison 2.3. */ |
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/* Positions for Bison parsers in C++ |
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Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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Boston, MA 02110-1301, USA. */ |
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/* As a special exception, you may create a larger work that contains |
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part or all of the Bison parser skeleton and distribute that work |
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under terms of your choice, so long as that work isn't itself a |
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parser generator using the skeleton or a modified version thereof |
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as a parser skeleton. Alternatively, if you modify or redistribute |
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the parser skeleton itself, you may (at your option) remove this |
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special exception, which will cause the skeleton and the resulting |
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Bison output files to be licensed under the GNU General Public |
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License without this special exception. |
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This special exception was added by the Free Software Foundation in |
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version 2.2 of Bison. */ |
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/** |
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** \file position.hh |
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** Define the yy::position class. |
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*/ |
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#ifndef BISON_POSITION_HH |
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# define BISON_POSITION_HH |
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# include <iostream> |
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# include <string> |
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namespace yy |
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{ |
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/// Abstract a position. |
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class position |
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{ |
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public: |
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/// Construct a position. |
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position () |
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: filename (0), line (1), column (0) |
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{ |
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} |
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/// Initialization. |
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inline void initialize (std::string* fn) |
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{ |
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filename = fn; |
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line = 1; |
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column = 0; |
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} |
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/** \name Line and Column related manipulators |
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** \{ */ |
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public: |
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/// (line related) Advance to the COUNT next lines. |
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inline void lines (int count = 1) |
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{ |
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column = 0; |
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line += count; |
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} |
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/// (column related) Advance to the COUNT next columns. |
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inline void columns (int count = 1) |
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{ |
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int leftmost = 0; |
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int current = column; |
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if (leftmost <= current + count) |
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column += count; |
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else |
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column = 0; |
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} |
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/** \} */ |
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public: |
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/// File name to which this position refers. |
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std::string* filename; |
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/// Current line number. |
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unsigned int line; |
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/// Current column number. |
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unsigned int column; |
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}; |
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/// Add and assign a position. |
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inline const position& |
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operator+= (position& res, const int width) |
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{ |
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res.columns (width); |
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104 |
return res; |
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105 |
} |
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106 |
|
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107 |
/// Add two position objects. |
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108 |
inline const position |
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109 |
operator+ (const position& begin, const int width) |
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110 |
{ |
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111 |
position res = begin; |
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112 |
return res += width; |
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113 |
} |
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114 |
|
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115 |
/// Add and assign a position. |
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116 |
inline const position& |
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117 |
operator-= (position& res, const int width) |
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118 |
{ |
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119 |
return res += -width; |
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120 |
} |
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121 |
|
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122 |
/// Add two position objects. |
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123 |
inline const position |
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124 |
operator- (const position& begin, const int width) |
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125 |
{ |
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126 |
return begin + -width; |
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127 |
} |
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128 |
|
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129 |
/** \brief Intercept output stream redirection. |
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130 |
** \param ostr the destination output stream |
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131 |
** \param pos a reference to the position to redirect |
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132 |
*/ |
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133 |
inline std::ostream& |
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134 |
operator<< (std::ostream& ostr, const position& pos) |
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135 |
{ |
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136 |
if (pos.filename) |
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137 |
ostr << *pos.filename << ':'; |
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138 |
return ostr << pos.line << '.' << pos.column; |
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139 |
} |
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140 |
|
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141 |
} |
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142 |
#endif // not BISON_POSITION_HH |