auto import from //depot/cupcake/@135843

1 files changed, 145 insertions, 0 deletions

diff --git a/JavaScriptCore/wtf/ASCIICType.h b/JavaScriptCore/wtf/ASCIICType.h
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+/*
+ * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WTF_ASCIICType_h
+#define WTF_ASCIICType_h
+
+#include <wtf/Assertions.h>
+#include <wtf/Platform.h>
+
+// The behavior of many of the functions in the <ctype.h> header is dependent
+// on the current locale. But in the WebKit project, all uses of those functions
+// are in code processing something that's not locale-specific. These equivalents
+// for some of the <ctype.h> functions are named more explicitly, not dependent
+// on the C library locale, and we should also optimize them as needed.
+
+// All functions return false or leave the character unchanged if passed a character
+// that is outside the range 0-7F. So they can be used on Unicode strings or
+// characters if the intent is to do processing only if the character is ASCII.
+
+namespace WTF {
+
+    inline bool isASCIIAlpha(char c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
+    inline bool isASCIIAlpha(unsigned short c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIAlpha(wchar_t c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
+#endif
+    inline bool isASCIIAlpha(int c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; }
+
+    inline bool isASCIIAlphanumeric(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
+    inline bool isASCIIAlphanumeric(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIAlphanumeric(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
+#endif
+    inline bool isASCIIAlphanumeric(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); }
+
+    inline bool isASCIIDigit(char c) { return (c >= '0') & (c <= '9'); }
+    inline bool isASCIIDigit(unsigned short c) { return (c >= '0') & (c <= '9'); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIDigit(wchar_t c) { return (c >= '0') & (c <= '9'); }
+#endif
+    inline bool isASCIIDigit(int c) { return (c >= '0') & (c <= '9'); }
+
+    inline bool isASCIIHexDigit(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
+    inline bool isASCIIHexDigit(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIHexDigit(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
+#endif
+    inline bool isASCIIHexDigit(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); }
+
+    inline bool isASCIIOctalDigit(char c) { return (c >= '0') & (c <= '7'); }
+    inline bool isASCIIOctalDigit(unsigned short c) { return (c >= '0') & (c <= '7'); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIOctalDigit(wchar_t c) { return (c >= '0') & (c <= '7'); }
+#endif
+    inline bool isASCIIOctalDigit(int c) { return (c >= '0') & (c <= '7'); }
+
+    inline bool isASCIILower(char c) { return c >= 'a' && c <= 'z'; }
+    inline bool isASCIILower(unsigned short c) { return c >= 'a' && c <= 'z'; }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIILower(wchar_t c) { return c >= 'a' && c <= 'z'; }
+#endif
+    inline bool isASCIILower(int c) { return c >= 'a' && c <= 'z'; }
+
+    inline bool isASCIIUpper(char c) { return c >= 'A' && c <= 'Z'; }
+    inline bool isASCIIUpper(unsigned short c) { return c >= 'A' && c <= 'Z'; }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIUpper(wchar_t c) { return c >= 'A' && c <= 'Z'; }
+#endif
+    inline bool isASCIIUpper(int c) { return c >= 'A' && c <= 'Z'; }
+
+    /*
+        Statistics from a run of Apple's page load test for callers of isASCIISpace:
+
+            character          count
+            ---------          -----
+            non-spaces         689383
+        20  space              294720
+        0A  \n                 89059
+        09  \t                 28320
+        0D  \r                 0
+        0C  \f                 0
+        0B  \v                 0
+    */
+    inline bool isASCIISpace(char c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
+    inline bool isASCIISpace(unsigned short c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIISpace(wchar_t c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
+#endif
+    inline bool isASCIISpace(int c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); }
+
+    inline char toASCIILower(char c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
+    inline unsigned short toASCIILower(unsigned short c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline wchar_t toASCIILower(wchar_t c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
+#endif
+    inline int toASCIILower(int c) { return c | ((c >= 'A' && c <= 'Z') << 5); }
+
+    inline char toASCIIUpper(char c) { return static_cast<char>(c & ~((c >= 'a' && c <= 'z') << 5)); }
+    inline unsigned short toASCIIUpper(unsigned short c) { return static_cast<unsigned short>(c & ~((c >= 'a' && c <= 'z') << 5)); }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline wchar_t toASCIIUpper(wchar_t c) { return static_cast<wchar_t>(c & ~((c >= 'a' && c <= 'z') << 5)); }
+#endif
+    inline int toASCIIUpper(int c) { return static_cast<int>(c & ~((c >= 'a' && c <= 'z') << 5)); }
+
+    inline int toASCIIHexValue(char c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
+    inline int toASCIIHexValue(unsigned short c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline int toASCIIHexValue(wchar_t c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
+#endif
+    inline int toASCIIHexValue(int c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; }
+
+    inline bool isASCIIPrintable(char c) { return c >= ' ' && c <= '~'; }
+    inline bool isASCIIPrintable(unsigned short c) { return c >= ' ' && c <= '~'; }
+#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
+    inline bool isASCIIPrintable(wchar_t c) { return c >= ' ' && c <= '~'; }
+#endif
+    inline bool isASCIIPrintable(int c) { return c >= ' ' && c <= '~'; }
+}
+
+#endif