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ASCIICType.h

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1/*-
2 * Copyright (C) 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.-
3 *-
4 * Redistribution and use in source and binary forms, with or without-
5 * modification, are permitted provided that the following conditions-
6 * are met:-
7 *-
8 * 1. Redistributions of source code must retain the above copyright-
9 * notice, this list of conditions and the following disclaimer. -
10 * 2. Redistributions in binary form must reproduce the above copyright-
11 * notice, this list of conditions and the following disclaimer in the-
12 * documentation and/or other materials provided with the distribution. -
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of-
14 * its contributors may be used to endorse or promote products derived-
15 * from this software without specific prior written permission. -
16 *-
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY-
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED-
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE-
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY-
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES-
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;-
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND-
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT-
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF-
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.-
27 */-
28-
29#ifndef WTF_ASCIICType_h-
30#define WTF_ASCIICType_h-
31-
32#include <wtf/Assertions.h>-
33-
34// The behavior of many of the functions in the <ctype.h> header is dependent-
35// on the current locale. But in the WebKit project, all uses of those functions-
36// are in code processing something that's not locale-specific. These equivalents-
37// for some of the <ctype.h> functions are named more explicitly, not dependent-
38// on the C library locale, and we should also optimize them as needed.-
39-
40// All functions return false or leave the character unchanged if passed a character-
41// that is outside the range 0-7F. So they can be used on Unicode strings or-
42// characters if the intent is to do processing only if the character is ASCII.-
43-
44namespace WTF {-
45-
46template<typename CharType> inline bool isASCII(CharType c)-
47{-
48 return !(c & ~0x7F);
executed 417 times by 3 tests: return !(c & ~0x7F);
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
417
49}-
50-
51template<typename CharType> inline bool isASCIIAlpha(CharType c)-
52{-
53 return (c | 0x20) >= 'a' && (c | 0x20) <= 'z';
executed 1238 times by 3 tests: return (c | 0x20) >= 'a' && (c | 0x20) <= 'z';
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
1238
54}-
55-
56template<typename CharType> inline bool isASCIIDigit(CharType c)-
57{-
58 return c >= '0' && c <= '9';
executed 9690 times by 3 tests: return c >= '0' && c <= '9';
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qquicktextinput
9690
59}-
60-
61template<typename CharType> inline bool isASCIIAlphanumeric(CharType c)-
62{-
63 return isASCIIDigit(c) || isASCIIAlpha(c);
executed 4 times by 1 test: return isASCIIDigit(c) || isASCIIAlpha(c);
Executed by:
  • tst_ecmascripttests
4
64}-
65-
66template<typename CharType> inline bool isASCIIHexDigit(CharType c)-
67{-
68 return isASCIIDigit(c) || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f');
executed 7372 times by 1 test: return isASCIIDigit(c) || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f');
Executed by:
  • tst_ecmascripttests
7372
69}-
70-
71template<typename CharType> inline bool isASCIILower(CharType c)-
72{-
73 return c >= 'a' && c <= 'z';
executed 24 times by 2 tests: return c >= 'a' && c <= 'z';
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
24
74}-
75-
76template<typename CharType> inline bool isASCIIOctalDigit(CharType c)-
77{-
78 return (c >= '0') & (c <= '7');
executed 88 times by 1 test: return (c >= '0') & (c <= '7');
Executed by:
  • tst_ecmascripttests
88
79}-
80-
81template<typename CharType> inline bool isASCIIPrintable(CharType c)-
82{-
83 return c >= ' ' && c <= '~';
never executed: return c >= ' ' && c <= '~';
0
84}-
85-
86/*-
87 Statistics from a run of Apple's page load test for callers of isASCIISpace:-
88-
89 character count-
90 --------- ------
91 non-spaces 689383-
92 20 space 294720-
93 0A \n 89059-
94 09 \t 28320-
95 0D \r 0-
96 0C \f 0-
97 0B \v 0-
98 */-
99template<typename CharType> inline bool isASCIISpace(CharType c)-
100{-
101 return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9));
never executed: return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9));
0
102}-
103-
104template<typename CharType> inline bool isASCIIUpper(CharType c)-
105{-
106 return c >= 'A' && c <= 'Z';
executed 20 times by 2 tests: return c >= 'A' && c <= 'Z';
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
20
107}-
108-
109template<typename CharType> inline CharType toASCIILower(CharType c)-
110{-
111 return c | ((c >= 'A' && c <= 'Z') << 5);
executed 4 times by 1 test: return c | ((c >= 'A' && c <= 'Z') << 5);
Executed by:
  • tst_ecmascripttests
4
112}-
113-
114template<typename CharType> inline CharType toASCIILowerUnchecked(CharType character)-
115{-
116 // This function can be used for comparing any input character-
117 // to a lowercase English character. The isASCIIAlphaCaselessEqual-
118 // below should be used for regular comparison of ASCII alpha-
119 // characters, but switch statements in CSS tokenizer require-
120 // direct use of this function.-
121 return character | 0x20;
never executed: return character | 0x20;
0
122}-
123-
124template<typename CharType> inline CharType toASCIIUpper(CharType c)-
125{-
126 return c & ~((c >= 'a' && c <= 'z') << 5);
executed 4 times by 1 test: return c & ~((c >= 'a' && c <= 'z') << 5);
Executed by:
  • tst_ecmascripttests
4
127}-
128-
129template<typename CharType> inline int toASCIIHexValue(CharType c)-
130{-
131 ASSERT(isASCIIHexDigit(c));-
132 return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF;
executed 3687 times by 1 test: return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF;
Executed by:
  • tst_ecmascripttests
3687
133}-
134-
135template<typename CharType> inline int toASCIIHexValue(CharType upperValue, CharType lowerValue)-
136{-
137 ASSERT(isASCIIHexDigit(upperValue) && isASCIIHexDigit(lowerValue));-
138 return ((toASCIIHexValue(upperValue) << 4) & 0xF0) | toASCIIHexValue(lowerValue);
never executed: return ((toASCIIHexValue(upperValue) << 4) & 0xF0) | toASCIIHexValue(lowerValue);
0
139}-
140-
141inline char lowerNibbleToASCIIHexDigit(char c)-
142{-
143 char nibble = c & 0xF;-
144 return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
never executed: return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
0
145}-
146-
147inline char upperNibbleToASCIIHexDigit(char c)-
148{-
149 char nibble = (c >> 4) & 0xF;-
150 return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
never executed: return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
0
151}-
152-
153template<typename CharType> inline bool isASCIIAlphaCaselessEqual(CharType cssCharacter, char character)-
154{-
155 // This function compares a (preferrably) constant ASCII-
156 // lowercase letter to any input character.-
157 ASSERT(character >= 'a' && character <= 'z');-
158 return LIKELY(toASCIILowerUnchecked(cssCharacter) == character);
never executed: return __builtin_expect((toASCIILowerUnchecked(cssCharacter) == character), 1);
0
159}-
160-
161}-
162-
163using WTF::isASCII;-
164using WTF::isASCIIAlpha;-
165using WTF::isASCIIAlphanumeric;-
166using WTF::isASCIIDigit;-
167using WTF::isASCIIHexDigit;-
168using WTF::isASCIILower;-
169using WTF::isASCIIOctalDigit;-
170using WTF::isASCIIPrintable;-
171using WTF::isASCIISpace;-
172using WTF::isASCIIUpper;-
173using WTF::toASCIIHexValue;-
174using WTF::toASCIILower;-
175using WTF::toASCIILowerUnchecked;-
176using WTF::toASCIIUpper;-
177using WTF::lowerNibbleToASCIIHexDigit;-
178using WTF::upperNibbleToASCIIHexDigit;-
179using WTF::isASCIIAlphaCaselessEqual;-
180-
181#endif-
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