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validate_universal_char.hpp - Hosted on DriveHQ Cloud IT Platform
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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\wave\cpplexer\validate_universal_char.hpp
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/*============================================================================= Boost.Wave: A Standard compliant C++ preprocessor library Grammar for universal character validation (see C++ standard: Annex E) http://www.boost.org/ Copyright (c) 2001-2008 Hartmut Kaiser. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) =============================================================================*/ #if !defined(VALIDATE_UNIVERSAL_CHAR_HPP_55F1B811_CD76_4C72_8344_CBC69CF3B339_INCLUDED) #define VALIDATE_UNIVERSAL_CHAR_HPP_55F1B811_CD76_4C72_8344_CBC69CF3B339_INCLUDED #include
#include
#include
#include
// this must occur after all of the includes and before any code appears #ifdef BOOST_HAS_ABI_HEADERS #include BOOST_ABI_PREFIX #endif /////////////////////////////////////////////////////////////////////////////// namespace boost { namespace wave { namespace cpplexer { namespace impl { enum universal_char_type { universal_char_type_valid = 0, universal_char_type_invalid = 1, universal_char_type_base_charset = 2, universal_char_type_not_allowed_for_identifiers = 3 }; /////////////////////////////////////////////////////////////////////////// // // is_range is a helper function for the classification by brute force // below // /////////////////////////////////////////////////////////////////////////// inline bool in_range(unsigned long ch, unsigned long l, unsigned long u) { return (l <= ch && ch <= u); } /////////////////////////////////////////////////////////////////////////////// // // classify_universal_char // // This function classifies an universal character value into 4 subranges: // universal_char_type_valid // the universal character value is valid for identifiers // universal_char_type_invalid // the universal character value is not valid for its usage inside // identifiers (see C++ Standard: 2.2.2 [lex.charset]) // universal_char_type_base_charset // the universal character value designates a character from the base // character set // universal_char_type_not_allowed_for_identifiers // the universal character value is not allowed in an identifier // // Implementation note: // This classification isn't implemented very effectively here. This // function should be rewritten with some range run matching algorithm. // /////////////////////////////////////////////////////////////////////////////// inline universal_char_type classify_universal_char (unsigned long ch) { // test for invalid characters if (ch <= 0x0020 || in_range(ch, 0x007f, 0x009f)) return universal_char_type_invalid; // test for characters in the range of the base character set if (in_range(ch, 0x0021, 0x005f) || in_range(ch, 0x0061, 0x007e)) return universal_char_type_base_charset; // test for additional valid character values (see C++ Standard: Annex E) if (in_range(ch, 0x00c0, 0x00d6) || in_range(ch, 0x00d8, 0x00f6) || in_range(ch, 0x00f8, 0x01f5) || in_range(ch, 0x01fa, 0x0217) || in_range(ch, 0x0250, 0x02a8) || in_range(ch, 0x1e00, 0x1e9a) || in_range(ch, 0x1ea0, 0x1ef9)) { return universal_char_type_valid; // Latin } if (0x0384 == ch || in_range(ch, 0x0388, 0x038a) || 0x038c == ch || in_range(ch, 0x038e, 0x03a1) || in_range(ch, 0x03a3, 0x03ce) || in_range(ch, 0x03d0, 0x03d6) || 0x03da == ch || 0x03dc == ch || 0x03de == ch || 0x03e0 == ch || in_range(ch, 0x03e2, 0x03f3) || in_range(ch, 0x1f00, 0x1f15) || in_range(ch, 0x1f18, 0x1f1d) || in_range(ch, 0x1f20, 0x1f45) || in_range(ch, 0x1f48, 0x1f4d) || in_range(ch, 0x1f50, 0x1f57) || 0x1f59 == ch || 0x1f5b == ch || 0x1f5d == ch || in_range(ch, 0x1f5f, 0x1f7d) || in_range(ch, 0x1f80, 0x1fb4) || in_range(ch, 0x1fb6, 0x1fbc) || in_range(ch, 0x1fc2, 0x1fc4) || in_range(ch, 0x1fc6, 0x1fcc) || in_range(ch, 0x1fd0, 0x1fd3) || in_range(ch, 0x1fd6, 0x1fdb) || in_range(ch, 0x1fe0, 0x1fec) || in_range(ch, 0x1ff2, 0x1ff4) || in_range(ch, 0x1ff6, 0x1ffc)) { return universal_char_type_valid; // Greek } if (in_range(ch, 0x0401, 0x040d) || in_range(ch, 0x040f, 0x044f) || in_range(ch, 0x0451, 0x045c) || in_range(ch, 0x045e, 0x0481) || in_range(ch, 0x0490, 0x04c4) || in_range(ch, 0x04c7, 0x04c8) || in_range(ch, 0x04cb, 0x04cc) || in_range(ch, 0x04d0, 0x04eb) || in_range(ch, 0x04ee, 0x04f5) || in_range(ch, 0x04f8, 0x04f9)) { return universal_char_type_valid; // Cyrillic } if (in_range(ch, 0x0531, 0x0556) || in_range(ch, 0x0561, 0x0587)) return universal_char_type_valid; // Armenian if (in_range(ch, 0x05d0, 0x05ea) || in_range(ch, 0x05f0, 0x05f4)) return universal_char_type_valid; // Hebrew if (in_range(ch, 0x0621, 0x063a) || in_range(ch, 0x0640, 0x0652) || in_range(ch, 0x0670, 0x06b7) || in_range(ch, 0x06ba, 0x06be) || in_range(ch, 0x06c0, 0x06ce) || in_range(ch, 0x06e5, 0x06e7)) { return universal_char_type_valid; // Arabic } if (in_range(ch, 0x0905, 0x0939) || in_range(ch, 0x0958, 0x0962)) return universal_char_type_valid; // Devanagari if (in_range(ch, 0x0985, 0x098c) || in_range(ch, 0x098f, 0x0990) || in_range(ch, 0x0993, 0x09a8) || in_range(ch, 0x09aa, 0x09b0) || 0x09b2 == ch || in_range(ch, 0x09b6, 0x09b9) || in_range(ch, 0x09dc, 0x09dd) || in_range(ch, 0x09df, 0x09e1) || in_range(ch, 0x09f0, 0x09f1)) { return universal_char_type_valid; // Bengali } if (in_range(ch, 0x0a05, 0x0a0a) || in_range(ch, 0x0a0f, 0x0a10) || in_range(ch, 0x0a13, 0x0a28) || in_range(ch, 0x0a2a, 0x0a30) || in_range(ch, 0x0a32, 0x0a33) || in_range(ch, 0x0a35, 0x0a36) || in_range(ch, 0x0a38, 0x0a39) || in_range(ch, 0x0a59, 0x0a5c) || 0x0a5e == ch) { return universal_char_type_valid; // Gurmukhi } if (in_range(ch, 0x0a85, 0x0a8b) || 0x0a8d == ch || in_range(ch, 0x0a8f, 0x0a91) || in_range(ch, 0x0a93, 0x0aa8) || in_range(ch, 0x0aaa, 0x0ab0) || in_range(ch, 0x0ab2, 0x0ab3) || in_range(ch, 0x0ab5, 0x0ab9) || 0x0ae0 == ch) { return universal_char_type_valid; // Gujarati } if (in_range(ch, 0x0b05, 0x0b0c) || in_range(ch, 0x0b0f, 0x0b10) || in_range(ch, 0x0b13, 0x0b28) || in_range(ch, 0x0b2a, 0x0b30) || in_range(ch, 0x0b32, 0x0b33) || in_range(ch, 0x0b36, 0x0b39) || in_range(ch, 0x0b5c, 0x0b5d) || in_range(ch, 0x0b5f, 0x0b61)) { return universal_char_type_valid; // Oriya } if (in_range(ch, 0x0b85, 0x0b8a) || in_range(ch, 0x0b8e, 0x0b90) || in_range(ch, 0x0b92, 0x0b95) || in_range(ch, 0x0b99, 0x0b9a) || 0x0b9c == ch || in_range(ch, 0x0b9e, 0x0b9f) || in_range(ch, 0x0ba3, 0x0ba4) || in_range(ch, 0x0ba8, 0x0baa) || in_range(ch, 0x0bae, 0x0bb5) || in_range(ch, 0x0bb7, 0x0bb9)) { return universal_char_type_valid; // Tamil } if (in_range(ch, 0x0c05, 0x0c0c) || in_range(ch, 0x0c0e, 0x0c10) || in_range(ch, 0x0c12, 0x0c28) || in_range(ch, 0x0c2a, 0x0c33) || in_range(ch, 0x0c35, 0x0c39) || in_range(ch, 0x0c60, 0x0c61)) { return universal_char_type_valid; // Telugu } if (in_range(ch, 0x0c85, 0x0c8c) || in_range(ch, 0x0c8e, 0x0c90) || in_range(ch, 0x0c92, 0x0ca8) || in_range(ch, 0x0caa, 0x0cb3) || in_range(ch, 0x0cb5, 0x0cb9) || in_range(ch, 0x0ce0, 0x0ce1)) { return universal_char_type_valid; // Kannada } if (in_range(ch, 0x0d05, 0x0d0c) || in_range(ch, 0x0d0e, 0x0d10) || in_range(ch, 0x0d12, 0x0d28) || in_range(ch, 0x0d2a, 0x0d39) || in_range(ch, 0x0d60, 0x0d61)) { return universal_char_type_valid; // Malayalam } if (in_range(ch, 0x0e01, 0x0e30) || in_range(ch, 0x0e32, 0x0e33) || in_range(ch, 0x0e40, 0x0e46) || in_range(ch, 0x0e4f, 0x0e5b)) { return universal_char_type_valid; // Thai } return universal_char_type_not_allowed_for_identifiers; } /////////////////////////////////////////////////////////////////////////////// // // validate_identifier_name // // The validate_identifier_name function tests a given identifier name for // its validity with regard to eventually contained universal characters. // These should be in valid ranges (see the function // classify_universal_char above). // // If the identifier name contains invalid or not allowed universal // characters a corresponding lexing_exception is thrown. // /////////////////////////////////////////////////////////////////////////////// template
inline void validate_identifier_name (StringT const &name, int line, int column, StringT const &file_name) { using namespace std; // some systems have strtoul in namespace std:: typename StringT::size_type pos = name.find_first_of('\\'); while (StringT::npos != pos) { // the identifier name contains a backslash (must be universal char) BOOST_ASSERT('u' == name[pos+1] || 'U' == name[pos+1]); StringT uchar_val(name.substr(pos+2, ('u' == name[pos+1]) ? 4 : 8)); universal_char_type type = classify_universal_char(strtoul(uchar_val.c_str(), 0, 16)); if (universal_char_type_valid != type) { // an invalid char was found, so throw an exception StringT error_uchar(name.substr(pos, ('u' == name[pos+1]) ? 6 : 10)); if (universal_char_type_invalid == type) { BOOST_WAVE_LEXER_THROW(lexing_exception, universal_char_invalid, error_uchar, line, column, file_name.c_str()); } else if (universal_char_type_base_charset == type) { BOOST_WAVE_LEXER_THROW(lexing_exception, universal_char_base_charset, error_uchar, line, column, file_name.c_str()); } else { BOOST_WAVE_LEXER_THROW(lexing_exception, universal_char_not_allowed, error_uchar, line, column, file_name.c_str()); } } // find next universal char (if appropriate) pos = name.find_first_of('\\', pos+2); } } /////////////////////////////////////////////////////////////////////////////// // // validate_literal // // The validate_literal function tests a given string or character literal // for its validity with regard to eventually contained universal // characters. These should be in valid ranges (see the function // classify_universal_char above). // // If the string or character literal contains invalid or not allowed // universal characters a corresponding lexing_exception is thrown. // /////////////////////////////////////////////////////////////////////////////// template
inline void validate_literal (StringT const &name, int line, int column, StringT const &file_name) { using namespace std; // some systems have strtoul in namespace std:: typename StringT::size_type pos = name.find_first_of('\\'); while (StringT::npos != pos) { // the literal contains a backslash (may be universal char) if ('u' == name[pos+1] || 'U' == name[pos+1]) { StringT uchar_val(name.substr(pos+2, ('u' == name[pos+1]) ? 4 : 8)); universal_char_type type = classify_universal_char(strtoul(uchar_val.c_str(), 0, 16)); if (universal_char_type_valid != type && universal_char_type_not_allowed_for_identifiers != type) { // an invalid char was found, so throw an exception StringT error_uchar(name.substr(pos, ('u' == name[pos+1]) ? 6 : 10)); if (universal_char_type_invalid == type) { BOOST_WAVE_LEXER_THROW(lexing_exception, universal_char_invalid, error_uchar, line, column, file_name.c_str()); } else { BOOST_WAVE_LEXER_THROW(lexing_exception, universal_char_base_charset, error_uchar, line, column, file_name.c_str()); } } } // find next universal char (if appropriate) pos = name.find_first_of('\\', pos+2); } } /////////////////////////////////////////////////////////////////////////////// } // namespace impl } // namespace cpplexer } // namespace wave } // namespace boost // the suffix header occurs after all of the code #ifdef BOOST_HAS_ABI_HEADERS #include BOOST_ABI_SUFFIX #endif #endif // !defined(VALIDATE_UNIVERSAL_CHAR_HPP_55F1B811_CD76_4C72_8344_CBC69CF3B339_INCLUDED)
validate_universal_char.hpp
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