boost/xpressive/regex_constants.hpp
/////////////////////////////////////////////////////////////////////////////// /// \file regex_constants.hpp /// Contains definitions for the syntax_option_type, match_flag_type and /// error_type enumerations. // // Copyright 2004 Eric Niebler. 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) #ifndef BOOST_XPRESSIVE_REGEX_CONSTANTS_HPP_EAN_10_04_2005 #define BOOST_XPRESSIVE_REGEX_CONSTANTS_HPP_EAN_10_04_2005 // MS compatible compilers support #pragma once #if defined(_MSC_VER) && (_MSC_VER >= 1020) # pragma once #endif #include <boost/mpl/identity.hpp> #ifndef BOOST_XPRESSIVE_DOXYGEN_INVOKED # define icase icase_ #endif namespace boost { namespace xpressive { namespace regex_constants { /// Flags used to customize the regex syntax /// enum syntax_option_type { // these flags are required: ECMAScript = 0, ///< Specifies that the grammar recognized by the regular expression ///< engine uses its normal semantics: that is the same as that given ///< in the ECMA-262, ECMAScript Language Specification, Chapter 15 ///< part 10, RegExp (Regular Expression) Objects (FWD.1). ///< icase = 1 << 1, ///< Specifies that matching of regular expressions against a character ///< container sequence shall be performed without regard to case. ///< nosubs = 1 << 2, ///< Specifies that when a regular expression is matched against a ///< character container sequence, then no sub-expression matches are to ///< be stored in the supplied match_results structure. ///< optimize = 1 << 3, ///< Specifies that the regular expression engine should pay more ///< attention to the speed with which regular expressions are matched, ///< and less to the speed with which regular expression objects are ///< constructed. Otherwise it has no detectable effect on the program ///< output. ///< collate = 1 << 4, ///< Specifies that character ranges of the form "[a-b]" should be ///< locale sensitive. ///< // These flags are optional. If the functionality is supported // then the flags shall take these names. //basic = 1 << 5, ///< Specifies that the grammar recognized by the regular expression // ///< engine is the same as that used by POSIX basic regular expressions // ///< in IEEE Std 1003.1-2001, Portable Operating System Interface // ///< (POSIX), Base Definitions and Headers, Section 9, Regular // ///< Expressions (FWD.1). // ///< //extended = 1 << 6, ///< Specifies that the grammar recognized by the regular expression // ///< engine is the same as that used by POSIX extended regular // ///< expressions in IEEE Std 1003.1-2001, Portable Operating System // ///< Interface (POSIX), Base Definitions and Headers, Section 9, // ///< Regular Expressions (FWD.1). // ///< //awk = 1 << 7, ///< Specifies that the grammar recognized by the regular expression // ///< engine is the same as that used by POSIX utility awk in IEEE Std // ///< 1003.1-2001, Portable Operating System Interface (POSIX), Shells // ///< and Utilities, Section 4, awk (FWD.1). // ///< //grep = 1 << 8, ///< Specifies that the grammar recognized by the regular expression // ///< engine is the same as that used by POSIX utility grep in IEEE Std // ///< 1003.1-2001, Portable Operating System Interface (POSIX), // ///< Shells and Utilities, Section 4, Utilities, grep (FWD.1). // ///< //egrep = 1 << 9, ///< Specifies that the grammar recognized by the regular expression // ///< engine is the same as that used by POSIX utility grep when given // ///< the -E option in IEEE Std 1003.1-2001, Portable Operating System // ///< Interface (POSIX), Shells and Utilities, Section 4, Utilities, // ///< grep (FWD.1). // ///< // these flags are specific to xpressive, and they help with perl compliance. single_line = 1 << 10, ///< Specifies that the ^ and \$ metacharacters DO NOT match at ///< internal line breaks. Note that this is the opposite of the ///< perl default. It is the inverse of perl's /m (multi-line) ///< modifier. ///< not_dot_null = 1 << 11, ///< Specifies that the . metacharacter does not match the null ///< character \\0. ///< not_dot_newline = 1 << 12, ///< Specifies that the . metacharacter does not match the ///< newline character \\n. ///< ignore_white_space = 1 << 13 ///< Specifies that non-escaped white-space is not significant. ///< }; /// Flags used to customize the behavior of the regex algorithms /// enum match_flag_type { match_default = 0, ///< Specifies that matching of regular expressions proceeds ///< without any modification of the normal rules used in ///< ECMA-262, ECMAScript Language Specification, Chapter 15 ///< part 10, RegExp (Regular Expression) Objects (FWD.1) ///< match_not_bol = 1 << 1, ///< Specifies that the expression "^" should not be matched ///< against the sub-sequence [first,first). ///< match_not_eol = 1 << 2, ///< Specifies that the expression "\$" should not be ///< matched against the sub-sequence [last,last). ///< match_not_bow = 1 << 3, ///< Specifies that the expression "\\b" should not be ///< matched against the sub-sequence [first,first). ///< match_not_eow = 1 << 4, ///< Specifies that the expression "\\b" should not be ///< matched against the sub-sequence [last,last). ///< match_any = 1 << 7, ///< Specifies that if more than one match is possible then ///< any match is an acceptable result. ///< match_not_null = 1 << 8, ///< Specifies that the expression can not be matched ///< against an empty sequence. ///< match_continuous = 1 << 10, ///< Specifies that the expression must match a sub-sequence ///< that begins at first. ///< match_partial = 1 << 11, ///< Specifies that if no match can be found, then it is ///< acceptable to return a match [from, last) where ///< from!=last, if there exists some sequence of characters ///< [from,to) of which [from,last) is a prefix, and which ///< would result in a full match. ///< match_prev_avail = 1 << 12, ///< Specifies that --first is a valid iterator position, ///< when this flag is set then the flags match_not_bol ///< and match_not_bow are ignored by the regular expression ///< algorithms (RE.7) and iterators (RE.8). ///< format_default = 0, ///< Specifies that when a regular expression match is to be ///< replaced by a new string, that the new string is ///< constructed using the rules used by the ECMAScript ///< replace function in ECMA-262, ECMAScript Language ///< Specification, Chapter 15 part 5.4.11 ///< String.prototype.replace. (FWD.1). In addition during ///< search and replace operations then all non-overlapping ///< occurrences of the regular expression are located and ///< replaced, and sections of the input that did not match ///< the expression, are copied unchanged to the output ///< string. ///< //format_sed = 1 << 13, ///< Specifies that when a regular expression match is to be // ///< replaced by a new string, that the new string is // ///< constructed using the rules used by the Unix sed // ///< utility in IEEE Std 1003.1-2001, Portable Operating // ///< SystemInterface (POSIX), Shells and Utilities. // ///< //format_perl = 1 << 14, ///< Specifies that when a regular expression match is to be // ///< replaced by a new string, that the new string is // ///< constructed using an implementation defined superset // ///< of the rules used by the ECMAScript replace function in // ///< ECMA-262, ECMAScript Language Specification, Chapter 15 // ///< part 5.4.11 String.prototype.replace (FWD.1). // ///< format_no_copy = 1 << 15, ///< When specified during a search and replace operation, ///< then sections of the character container sequence being ///< searched that do match the regular expression, are not ///< copied to the output string. ///< format_first_only = 1 << 16, ///< When specified during a search and replace operation, ///< then only the first occurrence of the regular ///< expression is replaced. ///< format_literal = 1 << 17 ///< Treat the format string as a literal. ///< }; /// Error codes used by the regex_error type /// enum error_type { error_collate, ///< The expression contained an invalid collating element name. ///< error_ctype, ///< The expression contained an invalid character class name. ///< error_escape, ///< The expression contained an invalid escaped character, ///< or a trailing escape. ///< error_subreg, ///< The expression contained an invalid back-reference. ///< error_brack, ///< The expression contained mismatched [ and ]. ///< error_paren, ///< The expression contained mismatched (and). ///< error_brace, ///< The expression contained mismatched { and } ///< error_badbrace, ///< The expression contained an invalid range in a {} expression. ///< error_range, ///< The expression contained an invalid character range, for ///< example [b-a]. ///< error_space, ///< There was insufficient memory to convert the expression into a ///< finite state machine. ///< error_badrepeat, ///< One of *?+{ was not preceded by a valid regular expression. ///< error_complexity, ///< The complexity of an attempted match against a regular ///< expression exceeded a pre-set level. ///< error_stack, ///< There was insufficient memory to determine whether the regular ///< expression could match the specified character sequence. ///< error_badref, ///< An nested regex is uninitialized. ///< error_badlookbehind, ///< An attempt to create a variable-width look-behind assertion ///< was detected. ///< error_internal ///< An internal error has occured. ///< }; /// INTERNAL ONLY inline syntax_option_type operator &(syntax_option_type b1, syntax_option_type b2) { return static_cast<syntax_option_type>( static_cast<int>(b1) & static_cast<int>(b2)); } /// INTERNAL ONLY inline syntax_option_type operator |(syntax_option_type b1, syntax_option_type b2) { return static_cast<syntax_option_type>(static_cast<int>(b1) | static_cast<int>(b2)); } /// INTERNAL ONLY inline syntax_option_type operator ^(syntax_option_type b1, syntax_option_type b2) { return static_cast<syntax_option_type>(static_cast<int>(b1) ^ static_cast<int>(b2)); } /// INTERNAL ONLY inline syntax_option_type operator ~(syntax_option_type b) { return static_cast<syntax_option_type>(~static_cast<int>(b)); } /// INTERNAL ONLY inline match_flag_type operator &(match_flag_type b1, match_flag_type b2) { return static_cast<match_flag_type>(static_cast<int>(b1) & static_cast<int>(b2)); } /// INTERNAL ONLY inline match_flag_type operator |(match_flag_type b1, match_flag_type b2) { return static_cast<match_flag_type>(static_cast<int>(b1) | static_cast<int>(b2)); } /// INTERNAL ONLY inline match_flag_type operator ^(match_flag_type b1, match_flag_type b2) { return static_cast<match_flag_type>(static_cast<int>(b1) ^ static_cast<int>(b2)); } /// INTERNAL ONLY inline match_flag_type operator ~(match_flag_type b) { return static_cast<match_flag_type>(~static_cast<int>(b)); } }}} // namespace boost::xpressive::regex_constants #ifndef BOOST_XPRESSIVE_DOXYGEN_INVOKED # undef icase #endif #endif