/*============================================================================= | |
Copyright (c) 2001-2011 Hartmut Kaiser | |
Copyright (c) 2001-2011 Joel de Guzman | |
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(BOOST_SPIRIT_ASCII_APRIL_26_2006_1106PM) | |
#define BOOST_SPIRIT_ASCII_APRIL_26_2006_1106PM | |
#if defined(_MSC_VER) | |
#pragma once | |
#endif | |
#include <climits> | |
#include <boost/assert.hpp> | |
#include <boost/cstdint.hpp> | |
/////////////////////////////////////////////////////////////////////////////// | |
// constants used to classify the single characters | |
/////////////////////////////////////////////////////////////////////////////// | |
#define BOOST_CC_DIGIT 0x0001 | |
#define BOOST_CC_XDIGIT 0x0002 | |
#define BOOST_CC_ALPHA 0x0004 | |
#define BOOST_CC_CTRL 0x0008 | |
#define BOOST_CC_LOWER 0x0010 | |
#define BOOST_CC_UPPER 0x0020 | |
#define BOOST_CC_SPACE 0x0040 | |
#define BOOST_CC_PUNCT 0x0080 | |
namespace boost { namespace spirit { namespace char_encoding | |
{ | |
// The detection of isgraph(), isprint() and isblank() is done programmatically | |
// to keep the character type table small. Additionally, these functions are | |
// rather seldom used and the programmatic detection is very simple. | |
/////////////////////////////////////////////////////////////////////////// | |
// ASCII character classification table | |
/////////////////////////////////////////////////////////////////////////// | |
const unsigned char ascii_char_types[] = | |
{ | |
/* NUL 0 0 */ BOOST_CC_CTRL, | |
/* SOH 1 1 */ BOOST_CC_CTRL, | |
/* STX 2 2 */ BOOST_CC_CTRL, | |
/* ETX 3 3 */ BOOST_CC_CTRL, | |
/* EOT 4 4 */ BOOST_CC_CTRL, | |
/* ENQ 5 5 */ BOOST_CC_CTRL, | |
/* ACK 6 6 */ BOOST_CC_CTRL, | |
/* BEL 7 7 */ BOOST_CC_CTRL, | |
/* BS 8 8 */ BOOST_CC_CTRL, | |
/* HT 9 9 */ BOOST_CC_CTRL|BOOST_CC_SPACE, | |
/* NL 10 a */ BOOST_CC_CTRL|BOOST_CC_SPACE, | |
/* VT 11 b */ BOOST_CC_CTRL|BOOST_CC_SPACE, | |
/* NP 12 c */ BOOST_CC_CTRL|BOOST_CC_SPACE, | |
/* CR 13 d */ BOOST_CC_CTRL|BOOST_CC_SPACE, | |
/* SO 14 e */ BOOST_CC_CTRL, | |
/* SI 15 f */ BOOST_CC_CTRL, | |
/* DLE 16 10 */ BOOST_CC_CTRL, | |
/* DC1 17 11 */ BOOST_CC_CTRL, | |
/* DC2 18 12 */ BOOST_CC_CTRL, | |
/* DC3 19 13 */ BOOST_CC_CTRL, | |
/* DC4 20 14 */ BOOST_CC_CTRL, | |
/* NAK 21 15 */ BOOST_CC_CTRL, | |
/* SYN 22 16 */ BOOST_CC_CTRL, | |
/* ETB 23 17 */ BOOST_CC_CTRL, | |
/* CAN 24 18 */ BOOST_CC_CTRL, | |
/* EM 25 19 */ BOOST_CC_CTRL, | |
/* SUB 26 1a */ BOOST_CC_CTRL, | |
/* ESC 27 1b */ BOOST_CC_CTRL, | |
/* FS 28 1c */ BOOST_CC_CTRL, | |
/* GS 29 1d */ BOOST_CC_CTRL, | |
/* RS 30 1e */ BOOST_CC_CTRL, | |
/* US 31 1f */ BOOST_CC_CTRL, | |
/* SP 32 20 */ BOOST_CC_SPACE, | |
/* ! 33 21 */ BOOST_CC_PUNCT, | |
/* " 34 22 */ BOOST_CC_PUNCT, | |
/* # 35 23 */ BOOST_CC_PUNCT, | |
/* $ 36 24 */ BOOST_CC_PUNCT, | |
/* % 37 25 */ BOOST_CC_PUNCT, | |
/* & 38 26 */ BOOST_CC_PUNCT, | |
/* ' 39 27 */ BOOST_CC_PUNCT, | |
/* ( 40 28 */ BOOST_CC_PUNCT, | |
/* ) 41 29 */ BOOST_CC_PUNCT, | |
/* * 42 2a */ BOOST_CC_PUNCT, | |
/* + 43 2b */ BOOST_CC_PUNCT, | |
/* , 44 2c */ BOOST_CC_PUNCT, | |
/* - 45 2d */ BOOST_CC_PUNCT, | |
/* . 46 2e */ BOOST_CC_PUNCT, | |
/* / 47 2f */ BOOST_CC_PUNCT, | |
/* 0 48 30 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 1 49 31 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 2 50 32 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 3 51 33 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 4 52 34 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 5 53 35 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 6 54 36 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 7 55 37 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 8 56 38 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* 9 57 39 */ BOOST_CC_DIGIT|BOOST_CC_XDIGIT, | |
/* : 58 3a */ BOOST_CC_PUNCT, | |
/* ; 59 3b */ BOOST_CC_PUNCT, | |
/* < 60 3c */ BOOST_CC_PUNCT, | |
/* = 61 3d */ BOOST_CC_PUNCT, | |
/* > 62 3e */ BOOST_CC_PUNCT, | |
/* ? 63 3f */ BOOST_CC_PUNCT, | |
/* @ 64 40 */ BOOST_CC_PUNCT, | |
/* A 65 41 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* B 66 42 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* C 67 43 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* D 68 44 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* E 69 45 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* F 70 46 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_UPPER, | |
/* G 71 47 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* H 72 48 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* I 73 49 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* J 74 4a */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* K 75 4b */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* L 76 4c */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* M 77 4d */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* N 78 4e */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* O 79 4f */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* P 80 50 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* Q 81 51 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* R 82 52 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* S 83 53 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* T 84 54 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* U 85 55 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* V 86 56 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* W 87 57 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* X 88 58 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* Y 89 59 */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* Z 90 5a */ BOOST_CC_ALPHA|BOOST_CC_UPPER, | |
/* [ 91 5b */ BOOST_CC_PUNCT, | |
/* \ 92 5c */ BOOST_CC_PUNCT, | |
/* ] 93 5d */ BOOST_CC_PUNCT, | |
/* ^ 94 5e */ BOOST_CC_PUNCT, | |
/* _ 95 5f */ BOOST_CC_PUNCT, | |
/* ` 96 60 */ BOOST_CC_PUNCT, | |
/* a 97 61 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* b 98 62 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* c 99 63 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* d 100 64 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* e 101 65 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* f 102 66 */ BOOST_CC_ALPHA|BOOST_CC_XDIGIT|BOOST_CC_LOWER, | |
/* g 103 67 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* h 104 68 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* i 105 69 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* j 106 6a */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* k 107 6b */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* l 108 6c */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* m 109 6d */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* n 110 6e */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* o 111 6f */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* p 112 70 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* q 113 71 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* r 114 72 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* s 115 73 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* t 116 74 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* u 117 75 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* v 118 76 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* w 119 77 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* x 120 78 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* y 121 79 */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* z 122 7a */ BOOST_CC_ALPHA|BOOST_CC_LOWER, | |
/* { 123 7b */ BOOST_CC_PUNCT, | |
/* | 124 7c */ BOOST_CC_PUNCT, | |
/* } 125 7d */ BOOST_CC_PUNCT, | |
/* ~ 126 7e */ BOOST_CC_PUNCT, | |
/* DEL 127 7f */ BOOST_CC_CTRL, | |
}; | |
/////////////////////////////////////////////////////////////////////////// | |
// Test characters for specified conditions (using ASCII) | |
/////////////////////////////////////////////////////////////////////////// | |
struct ascii | |
{ | |
typedef char char_type; | |
static bool | |
isascii_(int ch) | |
{ | |
return 0 == (ch & ~0x7f); | |
} | |
static bool | |
ischar(int ch) | |
{ | |
return isascii_(ch); | |
} | |
static int | |
isalnum(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_ALPHA) | |
|| (ascii_char_types[ch] & BOOST_CC_DIGIT); | |
} | |
static int | |
isalpha(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_ALPHA); | |
} | |
static int | |
isdigit(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_DIGIT); | |
} | |
static int | |
isxdigit(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_XDIGIT); | |
} | |
static int | |
iscntrl(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_CTRL); | |
} | |
static int | |
isgraph(int ch) | |
{ | |
return ('\x21' <= ch && ch <= '\x7e'); | |
} | |
static int | |
islower(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_LOWER); | |
} | |
static int | |
isprint(int ch) | |
{ | |
return ('\x20' <= ch && ch <= '\x7e'); | |
} | |
static int | |
ispunct(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_PUNCT); | |
} | |
static int | |
isspace(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_SPACE); | |
} | |
static int | |
isblank BOOST_PREVENT_MACRO_SUBSTITUTION (int ch) | |
{ | |
return ('\x09' == ch || '\x20' == ch); | |
} | |
static int | |
isupper(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return (ascii_char_types[ch] & BOOST_CC_UPPER); | |
} | |
/////////////////////////////////////////////////////////////////////// | |
// Simple character conversions | |
/////////////////////////////////////////////////////////////////////// | |
static int | |
tolower(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return isupper(ch) ? (ch - 'A' + 'a') : ch; | |
} | |
static int | |
toupper(int ch) | |
{ | |
BOOST_ASSERT(isascii_(ch)); | |
return islower(ch) ? (ch - 'a' + 'A') : ch; | |
} | |
static ::boost::uint32_t | |
toucs4(int ch) | |
{ | |
return ch; | |
} | |
}; | |
}}} | |
/////////////////////////////////////////////////////////////////////////////// | |
// undefine macros | |
/////////////////////////////////////////////////////////////////////////////// | |
#undef BOOST_CC_DIGIT | |
#undef BOOST_CC_XDIGIT | |
#undef BOOST_CC_ALPHA | |
#undef BOOST_CC_CTRL | |
#undef BOOST_CC_LOWER | |
#undef BOOST_CC_UPPER | |
#undef BOOST_CC_PUNCT | |
#undef BOOST_CC_SPACE | |
#endif | |