webkitgtk-2.4.11webkitgtk-2.4.11

1 files changed, 76 insertions, 165 deletions

diff --git a/Source/JavaScriptCore/runtime/JSGlobalObjectFunctions.cpp b/Source/JavaScriptCore/runtime/JSGlobalObjectFunctions.cpp
index ca5e4b31b..be9425ad3 100644
--- a/Source/JavaScriptCore/runtime/JSGlobalObjectFunctions.cpp
+++ b/Source/JavaScriptCore/runtime/JSGlobalObjectFunctions.cpp
@@ -26,6 +26,7 @@
 #include "JSGlobalObjectFunctions.h"
 
 #include "CallFrame.h"
+#include "CallFrameInlines.h"
 #include "Interpreter.h"
 #include "JSFunction.h"
 #include "JSGlobalObject.h"
@@ -34,7 +35,7 @@
 #include "Lexer.h"
 #include "LiteralParser.h"
 #include "Nodes.h"
-#include "JSCInlines.h"
+#include "Operations.h"
 #include "Parser.h"
 #include "StackVisitor.h"
 #include <wtf/dtoa.h>
@@ -42,7 +43,6 @@
 #include <stdlib.h>
 #include <wtf/ASCIICType.h>
 #include <wtf/Assertions.h>
-#include <wtf/HexNumber.h>
 #include <wtf/MathExtras.h>
 #include <wtf/StringExtras.h>
 #include <wtf/text/StringBuilder.h>
@@ -53,18 +53,9 @@ using namespace Unicode;
 
 namespace JSC {
 
-template<unsigned charactersCount>
-static Bitmap<256> makeCharacterBitmap(const char (&characters)[charactersCount])
+static JSValue encode(ExecState* exec, const char* doNotEscape)
 {
-    Bitmap<256> bitmap;
-    for (unsigned i = 0; i < charactersCount; ++i)
-        bitmap.set(characters[i]);
-    return bitmap;
-}
-
-static JSValue encode(ExecState* exec, const Bitmap<256>& doNotEscape)
-{
-    CString cstr = exec->argument(0).toString(exec)->view(exec).get().utf8(StrictConversion);
+    CString cstr = exec->argument(0).toString(exec)->value(exec).utf8(StrictConversion);
     if (!cstr.data())
         return exec->vm().throwException(exec, createURIError(exec, ASCIILiteral("String contained an illegal UTF-16 sequence.")));
 
@@ -72,11 +63,12 @@ static JSValue encode(ExecState* exec, const Bitmap<256>& doNotEscape)
     const char* p = cstr.data();
     for (size_t k = 0; k < cstr.length(); k++, p++) {
         char c = *p;
-        if (c && doNotEscape.get(static_cast<LChar>(c)))
-            builder.append(static_cast<LChar>(c));
+        if (c && strchr(doNotEscape, c))
+            builder.append(c);
         else {
-            builder.append(static_cast<LChar>('%'));
-            appendByteAsHex(c, builder);
+            char tmp[4];
+            snprintf(tmp, sizeof(tmp), "%%%02X", static_cast<unsigned char>(c));
+            builder.append(tmp);
         }
     }
     return builder.build(exec);
@@ -84,7 +76,7 @@ static JSValue encode(ExecState* exec, const Bitmap<256>& doNotEscape)
 
 template <typename CharType>
 ALWAYS_INLINE
-static JSValue decode(ExecState* exec, const CharType* characters, int length, const Bitmap<256>& doNotUnescape, bool strict)
+static JSValue decode(ExecState* exec, const CharType* characters, int length, const char* doNotUnescape, bool strict)
 {
     JSStringBuilder builder;
     int k = 0;
@@ -136,8 +128,11 @@ static JSValue decode(ExecState* exec, const CharType* characters, int length, c
                     u = Lexer<UChar>::convertUnicode(p[2], p[3], p[4], p[5]);
                 }
             }
-            if (charLen && (u == 0 || u >= 128 || !doNotUnescape.get(static_cast<LChar>(u)))) {
-                builder.append(u);
+            if (charLen && (u == 0 || u >= 128 || !strchr(doNotUnescape, u))) {
+                if (u < 256)
+                    builder.append(static_cast<LChar>(u));
+                else
+                    builder.append(u);
                 k += charLen;
                 continue;
             }
@@ -148,9 +143,10 @@ static JSValue decode(ExecState* exec, const CharType* characters, int length, c
     return builder.build(exec);
 }
 
-static JSValue decode(ExecState* exec, const Bitmap<256>& doNotUnescape, bool strict)
+static JSValue decode(ExecState* exec, const char* doNotUnescape, bool strict)
 {
-    JSString::SafeView str = exec->argument(0).toString(exec)->view(exec);
+    JSStringBuilder builder;
+    String str = exec->argument(0).toString(exec)->value(exec);
     
     if (str.is8Bit())
         return decode(exec, str.characters8(), str.length(), doNotUnescape, strict);
@@ -194,7 +190,7 @@ static int parseDigit(unsigned short c, int radix)
     return digit;
 }
 
-double parseIntOverflow(const LChar* s, unsigned length, int radix)
+double parseIntOverflow(const LChar* s, int length, int radix)
 {
     double number = 0.0;
     double radixMultiplier = 1.0;
@@ -216,7 +212,7 @@ double parseIntOverflow(const LChar* s, unsigned length, int radix)
     return number;
 }
 
-static double parseIntOverflow(const UChar* s, unsigned length, int radix)
+double parseIntOverflow(const UChar* s, int length, int radix)
 {
     double number = 0.0;
     double radixMultiplier = 1.0;
@@ -238,17 +234,10 @@ static double parseIntOverflow(const UChar* s, unsigned length, int radix)
     return number;
 }
 
-static double parseIntOverflow(StringView string, int radix)
-{
-    if (string.is8Bit())
-        return parseIntOverflow(string.characters8(), string.length(), radix);
-    return parseIntOverflow(string.characters16(), string.length(), radix);
-}
-
 // ES5.1 15.1.2.2
 template <typename CharType>
 ALWAYS_INLINE
-static double parseInt(StringView s, const CharType* data, int radix)
+static double parseInt(const String& s, const CharType* data, int radix)
 {
     // 1. Let inputString be ToString(string).
     // 2. Let S be a newly created substring of inputString consisting of the first character that is not a
@@ -291,7 +280,7 @@ static double parseInt(StringView s, const CharType* data, int radix)
 
     // 8.a If R < 2 or R > 36, then return NaN.
     if (radix < 2 || radix > 36)
-        return PNaN;
+        return QNaN;
 
     // 13. Let mathInt be the mathematical integer value that is represented by Z in radix-R notation, using the letters
     //     A-Z and a-z for digits with values 10 through 35. (However, if R is 10 and Z contains more than 20 significant
@@ -314,22 +303,22 @@ static double parseInt(StringView s, const CharType* data, int radix)
 
     // 12. If Z is empty, return NaN.
     if (!sawDigit)
-        return PNaN;
+        return QNaN;
 
     // Alternate code path for certain large numbers.
     if (number >= mantissaOverflowLowerBound) {
         if (radix == 10) {
             size_t parsedLength;
-            number = parseDouble(s.substring(firstDigitPosition, p - firstDigitPosition), parsedLength);
+            number = parseDouble(s.deprecatedCharacters() + firstDigitPosition, p - firstDigitPosition, parsedLength);
         } else if (radix == 2 || radix == 4 || radix == 8 || radix == 16 || radix == 32)
-            number = parseIntOverflow(s.substring(firstDigitPosition, p - firstDigitPosition), radix);
+            number = parseIntOverflow(s.substringSharingImpl(firstDigitPosition, p - firstDigitPosition).utf8().data(), p - firstDigitPosition, radix);
     }
 
     // 15. Return sign x number.
     return sign * number;
 }
 
-static double parseInt(StringView s, int radix)
+static double parseInt(const String& s, int radix)
 {
     if (s.is8Bit())
         return parseInt(s, s.characters8(), radix);
@@ -352,51 +341,7 @@ static bool isInfinity(const CharType* data, const CharType* end)
         && data[7] == 'y';
 }
 
-// See ecma-262 6th 11.8.3
-template <typename CharType>
-static double jsBinaryIntegerLiteral(const CharType*& data, const CharType* end)
-{
-    // Binary number.
-    data += 2;
-    const CharType* firstDigitPosition = data;
-    double number = 0;
-    while (true) {
-        number = number * 2 + (*data - '0');
-        ++data;
-        if (data == end)
-            break;
-        if (!isASCIIBinaryDigit(*data))
-            break;
-    }
-    if (number >= mantissaOverflowLowerBound)
-        number = parseIntOverflow(firstDigitPosition, data - firstDigitPosition, 2);
-
-    return number;
-}
-
-// See ecma-262 6th 11.8.3
-template <typename CharType>
-static double jsOctalIntegerLiteral(const CharType*& data, const CharType* end)
-{
-    // Octal number.
-    data += 2;
-    const CharType* firstDigitPosition = data;
-    double number = 0;
-    while (true) {
-        number = number * 8 + (*data - '0');
-        ++data;
-        if (data == end)
-            break;
-        if (!isASCIIOctalDigit(*data))
-            break;
-    }
-    if (number >= mantissaOverflowLowerBound)
-        number = parseIntOverflow(firstDigitPosition, data - firstDigitPosition, 8);
-    
-    return number;
-}
-
-// See ecma-262 6th 11.8.3
+// See ecma-262 9.3.1
 template <typename CharType>
 static double jsHexIntegerLiteral(const CharType*& data, const CharType* end)
 {
@@ -418,7 +363,7 @@ static double jsHexIntegerLiteral(const CharType*& data, const CharType* end)
     return number;
 }
 
-// See ecma-262 6th 11.8.3
+// See ecma-262 9.3.1
 template <typename CharType>
 static double jsStrDecimalLiteral(const CharType*& data, const CharType* end)
 {
@@ -456,7 +401,7 @@ static double jsStrDecimalLiteral(const CharType*& data, const CharType* end)
     }
 
     // Not a number.
-    return PNaN;
+    return QNaN;
 }
 
 template <typename CharType>
@@ -475,16 +420,9 @@ static double toDouble(const CharType* characters, unsigned size)
         return 0.0;
     
     double number;
-    if (characters[0] == '0' && characters + 2 < endCharacters) {
-        if ((characters[1] | 0x20) == 'x' && isASCIIHexDigit(characters[2]))
-            number = jsHexIntegerLiteral(characters, endCharacters);
-        else if ((characters[1] | 0x20) == 'o' && isASCIIOctalDigit(characters[2]))
-            number = jsOctalIntegerLiteral(characters, endCharacters);
-        else if ((characters[1] | 0x20) == 'b' && isASCIIBinaryDigit(characters[2]))
-            number = jsBinaryIntegerLiteral(characters, endCharacters);
-        else
-            number = jsStrDecimalLiteral(characters, endCharacters);
-    } else
+    if (characters[0] == '0' && characters + 2 < endCharacters && (characters[1] | 0x20) == 'x' && isASCIIHexDigit(characters[2]))
+        number = jsHexIntegerLiteral(characters, endCharacters);
+    else
         number = jsStrDecimalLiteral(characters, endCharacters);
     
     // Allow trailing white space.
@@ -493,13 +431,13 @@ static double toDouble(const CharType* characters, unsigned size)
             break;
     }
     if (characters != endCharacters)
-        return PNaN;
+        return QNaN;
     
     return number;
 }
 
-// See ecma-262 6th 11.8.3
-double jsToNumber(StringView s)
+// See ecma-262 9.3.1
+double jsToNumber(const String& s)
 {
     unsigned size = s.length();
 
@@ -509,7 +447,7 @@ double jsToNumber(StringView s)
             return c - '0';
         if (isStrWhiteSpace(c))
             return 0;
-        return PNaN;
+        return QNaN;
     }
 
     if (s.is8Bit())
@@ -517,7 +455,7 @@ double jsToNumber(StringView s)
     return toDouble(s.characters16(), size);
 }
 
-static double parseFloat(StringView s)
+static double parseFloat(const String& s)
 {
     unsigned size = s.length();
 
@@ -525,7 +463,7 @@ static double parseFloat(StringView s)
         UChar c = s[0];
         if (isASCIIDigit(c))
             return c - '0';
-        return PNaN;
+        return QNaN;
     }
 
     if (s.is8Bit()) {
@@ -540,7 +478,7 @@ static double parseFloat(StringView s)
 
         // Empty string.
         if (data == end)
-            return PNaN;
+            return QNaN;
 
         return jsStrDecimalLiteral(data, end);
     }
@@ -556,7 +494,7 @@ static double parseFloat(StringView s)
 
     // Empty string.
     if (data == end)
-        return PNaN;
+        return QNaN;
 
     return jsStrDecimalLiteral(data, end);
 }
@@ -567,15 +505,7 @@ EncodedJSValue JSC_HOST_CALL globalFuncEval(ExecState* exec)
     if (!x.isString())
         return JSValue::encode(x);
 
-    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
-    if (!globalObject->evalEnabled()) {
-        exec->vm().throwException(exec, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
-        return JSValue::encode(jsUndefined());
-    }
-
     String s = x.toString(exec)->value(exec);
-    if (exec->hadException())
-        return JSValue::encode(jsUndefined());
 
     if (s.is8Bit()) {
         LiteralParser<LChar> preparser(exec, s.characters8(), s.length(), NonStrictJSON);
@@ -588,12 +518,11 @@ EncodedJSValue JSC_HOST_CALL globalFuncEval(ExecState* exec)
     }
 
     JSGlobalObject* calleeGlobalObject = exec->callee()->globalObject();
-    VariableEnvironment emptyTDZVariables; // Indirect eval does not have access to the lexical scope.
-    EvalExecutable* eval = EvalExecutable::create(exec, makeSource(s), false, ThisTDZMode::CheckIfNeeded, DerivedContextType::None, false, &emptyTDZVariables);
+    EvalExecutable* eval = EvalExecutable::create(exec, makeSource(s), false);
     if (!eval)
         return JSValue::encode(jsUndefined());
 
-    return JSValue::encode(exec->interpreter()->execute(eval, exec, calleeGlobalObject->globalThis(), calleeGlobalObject->globalScope()));
+    return JSValue::encode(exec->interpreter()->execute(eval, exec, calleeGlobalObject->globalThis(), calleeGlobalObject));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncParseInt(ExecState* exec)
@@ -619,16 +548,16 @@ EncodedJSValue JSC_HOST_CALL globalFuncParseInt(ExecState* exec)
     }
 
     // If ToString throws, we shouldn't call ToInt32.
-    JSString::SafeView s = value.toString(exec)->view(exec);
+    String s = value.toString(exec)->value(exec);
     if (exec->hadException())
         return JSValue::encode(jsUndefined());
 
-    return JSValue::encode(jsNumber(parseInt(s.get(), radixValue.toInt32(exec))));
+    return JSValue::encode(jsNumber(parseInt(s, radixValue.toInt32(exec))));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncParseFloat(ExecState* exec)
 {
-    return JSValue::encode(jsNumber(parseFloat(exec->argument(0).toString(exec)->view(exec).get())));
+    return JSValue::encode(jsNumber(parseFloat(exec->argument(0).toString(exec)->value(exec))));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncIsNaN(ExecState* exec)
@@ -644,63 +573,59 @@ EncodedJSValue JSC_HOST_CALL globalFuncIsFinite(ExecState* exec)
 
 EncodedJSValue JSC_HOST_CALL globalFuncDecodeURI(ExecState* exec)
 {
-    static Bitmap<256> doNotUnescapeWhenDecodingURI = makeCharacterBitmap(
-        "#$&+,/:;=?@"
-    );
+    static const char do_not_unescape_when_decoding_URI[] =
+        "#$&+,/:;=?@";
 
-    return JSValue::encode(decode(exec, doNotUnescapeWhenDecodingURI, true));
+    return JSValue::encode(decode(exec, do_not_unescape_when_decoding_URI, true));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncDecodeURIComponent(ExecState* exec)
 {
-    static Bitmap<256> emptyBitmap;
-    return JSValue::encode(decode(exec, emptyBitmap, true));
+    return JSValue::encode(decode(exec, "", true));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncEncodeURI(ExecState* exec)
 {
-    static Bitmap<256> doNotEscapeWhenEncodingURI = makeCharacterBitmap(
+    static const char do_not_escape_when_encoding_URI[] =
         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
         "abcdefghijklmnopqrstuvwxyz"
         "0123456789"
-        "!#$&'()*+,-./:;=?@_~"
-    );
+        "!#$&'()*+,-./:;=?@_~";
 
-    return JSValue::encode(encode(exec, doNotEscapeWhenEncodingURI));
+    return JSValue::encode(encode(exec, do_not_escape_when_encoding_URI));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncEncodeURIComponent(ExecState* exec)
 {
-    static Bitmap<256> doNotEscapeWhenEncodingURIComponent = makeCharacterBitmap(
+    static const char do_not_escape_when_encoding_URI_component[] =
         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
         "abcdefghijklmnopqrstuvwxyz"
         "0123456789"
-        "!'()*-._~"
-    );
+        "!'()*-._~";
 
-    return JSValue::encode(encode(exec, doNotEscapeWhenEncodingURIComponent));
+    return JSValue::encode(encode(exec, do_not_escape_when_encoding_URI_component));
 }
 
 EncodedJSValue JSC_HOST_CALL globalFuncEscape(ExecState* exec)
 {
-    static Bitmap<256> doNotEscape = makeCharacterBitmap(
+    static const char do_not_escape[] =
         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
         "abcdefghijklmnopqrstuvwxyz"
         "0123456789"
-        "*+-./@_"
-    );
+        "*+-./@_";
 
     JSStringBuilder builder;
-    JSString::SafeView str = exec->argument(0).toString(exec)->view(exec);
+    String str = exec->argument(0).toString(exec)->value(exec);
     if (str.is8Bit()) {
         const LChar* c = str.characters8();
         for (unsigned k = 0; k < str.length(); k++, c++) {
             int u = c[0];
-            if (u && doNotEscape.get(static_cast<LChar>(u)))
-                builder.append(*c);
+            if (u && strchr(do_not_escape, static_cast<char>(u)))
+                builder.append(c, 1);
             else {
-                builder.append(static_cast<LChar>('%'));
-                appendByteAsHex(static_cast<LChar>(u), builder);
+                char tmp[4];
+                snprintf(tmp, sizeof(tmp), "%%%02X", u);
+                builder.append(tmp);
             }
         }
 
@@ -711,15 +636,15 @@ EncodedJSValue JSC_HOST_CALL globalFuncEscape(ExecState* exec)
     for (unsigned k = 0; k < str.length(); k++, c++) {
         int u = c[0];
         if (u > 255) {
-            builder.append(static_cast<LChar>('%'));
-            builder.append(static_cast<LChar>('u'));
-            appendByteAsHex(u >> 8, builder);
-            appendByteAsHex(u & 0xFF, builder);
-        } else if (u != 0 && doNotEscape.get(static_cast<LChar>(u)))
-            builder.append(*c);
+            char tmp[7];
+            snprintf(tmp, sizeof(tmp), "%%u%04X", u);
+            builder.append(tmp);
+        } else if (u != 0 && strchr(do_not_escape, static_cast<char>(u)))
+            builder.append(c, 1);
         else {
-            builder.append(static_cast<LChar>('%'));
-            appendByteAsHex(u, builder);
+            char tmp[4];
+            snprintf(tmp, sizeof(tmp), "%%%02X", u);
+            builder.append(tmp);
         }
     }
 
@@ -729,7 +654,7 @@ EncodedJSValue JSC_HOST_CALL globalFuncEscape(ExecState* exec)
 EncodedJSValue JSC_HOST_CALL globalFuncUnescape(ExecState* exec)
 {
     StringBuilder builder;
-    JSString::SafeView str = exec->argument(0).toString(exec)->view(exec);
+    String str = exec->argument(0).toString(exec)->value(exec);
     int k = 0;
     int len = str.length();
     
@@ -855,13 +780,6 @@ private:
     JSObject* m_thisObject;
 };
 
-bool checkProtoSetterAccessAllowed(ExecState* exec, JSObject* object)
-{
-    GlobalFuncProtoSetterFunctor functor(object);
-    exec->iterate(functor);
-    return functor.allowsAccess();
-}
-
 EncodedJSValue JSC_HOST_CALL globalFuncProtoSetter(ExecState* exec)
 {
     if (exec->thisValue().isUndefinedOrNull()) 
@@ -875,27 +793,20 @@ EncodedJSValue JSC_HOST_CALL globalFuncProtoSetter(ExecState* exec)
     if (!thisObject)
         return JSValue::encode(jsUndefined());
 
-    if (!checkProtoSetterAccessAllowed(exec, thisObject))
+    GlobalFuncProtoSetterFunctor functor(thisObject);
+    exec->iterate(functor);
+    if (!functor.allowsAccess())
         return JSValue::encode(jsUndefined());
 
     // Setting __proto__ to a non-object, non-null value is silently ignored to match Mozilla.
     if (!value.isObject() && !value.isNull())
         return JSValue::encode(jsUndefined());
 
-    if (thisObject->prototype() == value)
-        return JSValue::encode(jsUndefined());
-
     if (!thisObject->isExtensible())
         return throwVMError(exec, createTypeError(exec, StrictModeReadonlyPropertyWriteError));
 
     if (!thisObject->setPrototypeWithCycleCheck(exec, value))
-        exec->vm().throwException(exec, createError(exec, ASCIILiteral("cyclic __proto__ value")));
-    return JSValue::encode(jsUndefined());
-}
-    
-EncodedJSValue JSC_HOST_CALL globalFuncBuiltinLog(ExecState* exec)
-{
-    dataLog(exec->argument(0).toWTFString(exec), "\n");
+        exec->vm().throwException(exec, createError(exec, "cyclic __proto__ value"));
     return JSValue::encode(jsUndefined());
 }