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29 #ifndef WTF_ASCIICType_h
30 #define WTF_ASCIICType_h
32 #include "yarr/jswtfbridge.h"
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.
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.
46 inline bool isASCII(char c) { return !(c & ~0x7F); }
47 inline bool isASCII(unsigned short c) { return !(c & ~0x7F); }
48 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
49 inline bool isASCII(wchar_t c) { return !(c & ~0x7F); }
51 inline bool isASCII(int c) { return !(c & ~0x7F); }
53 inline bool isASCIIAlpha(char c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
54 inline bool isASCIIAlpha(unsigned short c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
55 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
56 inline bool isASCIIAlpha(wchar_t c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
58 inline bool isASCIIAlpha(int c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
60 inline bool isASCIIAlphanumeric(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
61 inline bool isASCIIAlphanumeric(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
62 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
63 inline bool isASCIIAlphanumeric(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
65 inline bool isASCIIAlphanumeric(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
67 inline bool isASCIIDigit(char c) { return (c >= '0') & (c <= '9'); }
68 inline bool isASCIIDigit(unsigned short c) { return (c >= '0') & (c <= '9'); }
69 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
70 inline bool isASCIIDigit(wchar_t c) { return (c >= '0') & (c <= '9'); }
72 inline bool isASCIIDigit(int c) { return (c >= '0') & (c <= '9'); }
74 inline bool isASCIIHexDigit(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
75 inline bool isASCIIHexDigit(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
76 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
77 inline bool isASCIIHexDigit(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
79 inline bool isASCIIHexDigit(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
81 inline bool isASCIIOctalDigit(char c) { return (c >= '0') & (c <= '7'); }
82 inline bool isASCIIOctalDigit(unsigned short c) { return (c >= '0') & (c <= '7'); }
83 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
84 inline bool isASCIIOctalDigit(wchar_t c) { return (c >= '0') & (c <= '7'); }
86 inline bool isASCIIOctalDigit(int c) { return (c >= '0') & (c <= '7'); }
88 inline bool isASCIILower(char c) { return c >= 'a' && c <= 'z'; }
89 inline bool isASCIILower(unsigned short c) { return c >= 'a' && c <= 'z'; }
90 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
91 inline bool isASCIILower(wchar_t c) { return c >= 'a' && c <= 'z'; }
93 inline bool isASCIILower(int c) { return c >= 'a' && c <= 'z'; }
95 inline bool isASCIIUpper(char c) { return c >= 'A' && c <= 'Z'; }
96 inline bool isASCIIUpper(unsigned short c) { return c >= 'A' && c <= 'Z'; }
97 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
98 inline bool isASCIIUpper(wchar_t c) { return c >= 'A' && c <= 'Z'; }
100 inline bool isASCIIUpper(int c) { return c >= 'A' && c <= 'Z'; }
103 Statistics from a run of Apple's page load test for callers of isASCIISpace:
115 inline bool isASCIISpace(char c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
116 inline bool isASCIISpace(unsigned short c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
117 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
118 inline bool isASCIISpace(wchar_t c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
120 inline bool isASCIISpace(int c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
122 inline char toASCIILower(char c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
123 inline unsigned short toASCIILower(unsigned short c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
124 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
125 inline wchar_t toASCIILower(wchar_t c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
127 inline int toASCIILower(int c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
129 inline char toASCIIUpper(char c) { return static_cast<char>(c & ~((c >= 'a' && c <= 'z') << 5)); }
130 inline unsigned short toASCIIUpper(unsigned short c) { return static_cast<unsigned short>(c & ~((c >= 'a' && c <= 'z') << 5)); }
131 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
132 inline wchar_t toASCIIUpper(wchar_t c) { return static_cast<wchar_t>(c & ~((c >= 'a' && c <= 'z') << 5)); }
134 inline int toASCIIUpper(int c) { return static_cast<int>(c & ~((c >= 'a' && c <= 'z') << 5)); }
136 inline int toASCIIHexValue(char c) { JS_ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
137 inline int toASCIIHexValue(unsigned short c) { JS_ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
138 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
139 inline int toASCIIHexValue(wchar_t c) { JS_ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
141 inline int toASCIIHexValue(int c) { JS_ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
143 inline bool isASCIIPrintable(char c) { return c >= ' ' && c <= '~'; }
144 inline bool isASCIIPrintable(unsigned short c) { return c >= ' ' && c <= '~'; }
145 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED)
146 inline bool isASCIIPrintable(wchar_t c) { return c >= ' ' && c <= '~'; }
148 inline bool isASCIIPrintable(int c) { return c >= ' ' && c <= '~'; }
153 using WTF::isASCIIAlpha;
154 using WTF::isASCIIAlphanumeric;
155 using WTF::isASCIIDigit;
156 using WTF::isASCIIHexDigit;
157 using WTF::isASCIILower;
158 using WTF::isASCIIOctalDigit;
159 using WTF::isASCIIPrintable;
160 using WTF::isASCIISpace;
161 using WTF::isASCIIUpper;
162 using WTF::toASCIIHexValue;
163 using WTF::toASCIILower;
164 using WTF::toASCIIUpper;