Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 246 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/MathObject.cpp b/Source/JavaScriptCore/runtime/MathObject.cpp
new file mode 100644
index 000000000..58b09122d
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/MathObject.cpp
@@ -0,0 +1,246 @@
+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2007, 2008 Apple Inc. All Rights Reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "MathObject.h"
+
+#include "Lookup.h"
+#include "ObjectPrototype.h"
+#include "Operations.h"
+#include <time.h>
+#include <wtf/Assertions.h>
+#include <wtf/MathExtras.h>
+#include <wtf/RandomNumber.h>
+#include <wtf/RandomNumberSeed.h>
+
+namespace JSC {
+
+ASSERT_CLASS_FITS_IN_CELL(MathObject);
+
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState*);
+static EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState*);
+
+}
+
+#include "MathObject.lut.h"
+
+namespace JSC {
+
+ASSERT_HAS_TRIVIAL_DESTRUCTOR(MathObject);
+
+const ClassInfo MathObject::s_info = { "Math", &JSNonFinalObject::s_info, 0, ExecState::mathTable, CREATE_METHOD_TABLE(MathObject) };
+
+/* Source for MathObject.lut.h
+@begin mathTable
+  abs           mathProtoFuncAbs               DontEnum|Function 1
+  acos          mathProtoFuncACos              DontEnum|Function 1
+  asin          mathProtoFuncASin              DontEnum|Function 1
+  atan          mathProtoFuncATan              DontEnum|Function 1
+  atan2         mathProtoFuncATan2             DontEnum|Function 2
+  ceil          mathProtoFuncCeil              DontEnum|Function 1
+  cos           mathProtoFuncCos               DontEnum|Function 1
+  exp           mathProtoFuncExp               DontEnum|Function 1
+  floor         mathProtoFuncFloor             DontEnum|Function 1
+  log           mathProtoFuncLog               DontEnum|Function 1
+  max           mathProtoFuncMax               DontEnum|Function 2
+  min           mathProtoFuncMin               DontEnum|Function 2
+  pow           mathProtoFuncPow               DontEnum|Function 2
+  random        mathProtoFuncRandom            DontEnum|Function 0 
+  round         mathProtoFuncRound             DontEnum|Function 1
+  sin           mathProtoFuncSin               DontEnum|Function 1
+  sqrt          mathProtoFuncSqrt              DontEnum|Function 1
+  tan           mathProtoFuncTan               DontEnum|Function 1
+@end
+*/
+
+MathObject::MathObject(JSGlobalObject* globalObject, Structure* structure)
+    : JSNonFinalObject(globalObject->globalData(), structure)
+{
+}
+
+void MathObject::finishCreation(ExecState* exec, JSGlobalObject* globalObject)
+{
+    Base::finishCreation(globalObject->globalData());
+    ASSERT(inherits(&s_info));
+
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "E"), jsNumber(exp(1.0)), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LN2"), jsNumber(log(2.0)), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LN10"), jsNumber(log(10.0)), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LOG2E"), jsNumber(1.0 / log(2.0)), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LOG10E"), jsNumber(0.4342944819032518), DontDelete | DontEnum | ReadOnly); // See ECMA-262 15.8.1.5
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "PI"), jsNumber(piDouble), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SQRT1_2"), jsNumber(sqrt(0.5)), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SQRT2"), jsNumber(sqrt(2.0)), DontDelete | DontEnum | ReadOnly);
+}
+
+bool MathObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
+{
+    return getStaticFunctionSlot<JSObject>(exec, ExecState::mathTable(exec), jsCast<MathObject*>(cell), propertyName, slot);
+}
+
+bool MathObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+    return getStaticFunctionDescriptor<JSObject>(exec, ExecState::mathTable(exec), jsCast<MathObject*>(object), propertyName, descriptor);
+}
+
+// ------------------------------ Functions --------------------------------
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState* exec)
+{
+    return JSValue::encode(jsNumber(fabs(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(acos(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(asin(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(atan(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState* exec)
+{
+    double arg0 = exec->argument(0).toNumber(exec);
+    double arg1 = exec->argument(1).toNumber(exec);
+    return JSValue::encode(jsDoubleNumber(atan2(arg0, arg1)));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState* exec)
+{
+    return JSValue::encode(jsNumber(ceil(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(cos(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(exp(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState* exec)
+{
+    return JSValue::encode(jsNumber(floor(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(log(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState* exec)
+{
+    unsigned argsCount = exec->argumentCount();
+    double result = -std::numeric_limits<double>::infinity();
+    for (unsigned k = 0; k < argsCount; ++k) {
+        double val = exec->argument(k).toNumber(exec);
+        if (isnan(val)) {
+            result = std::numeric_limits<double>::quiet_NaN();
+            break;
+        }
+        if (val > result || (val == 0 && result == 0 && !signbit(val)))
+            result = val;
+    }
+    return JSValue::encode(jsNumber(result));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState* exec)
+{
+    unsigned argsCount = exec->argumentCount();
+    double result = +std::numeric_limits<double>::infinity();
+    for (unsigned k = 0; k < argsCount; ++k) {
+        double val = exec->argument(k).toNumber(exec);
+        if (isnan(val)) {
+            result = std::numeric_limits<double>::quiet_NaN();
+            break;
+        }
+        if (val < result || (val == 0 && result == 0 && signbit(val)))
+            result = val;
+    }
+    return JSValue::encode(jsNumber(result));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState* exec)
+{
+    // ECMA 15.8.2.1.13
+
+    double arg = exec->argument(0).toNumber(exec);
+    double arg2 = exec->argument(1).toNumber(exec);
+
+    if (isnan(arg2))
+        return JSValue::encode(jsNaN());
+    if (isinf(arg2) && fabs(arg) == 1)
+        return JSValue::encode(jsNaN());
+    return JSValue::encode(jsNumber(pow(arg, arg2)));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(exec->lexicalGlobalObject()->weakRandomNumber()));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState* exec)
+{
+    double arg = exec->argument(0).toNumber(exec);
+    double integer = ceil(arg);
+    return JSValue::encode(jsNumber(integer - (integer - arg > 0.5)));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState* exec)
+{
+    return JSValue::encode(exec->globalData().cachedSin(exec->argument(0).toNumber(exec)));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(sqrt(exec->argument(0).toNumber(exec))));
+}
+
+EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState* exec)
+{
+    return JSValue::encode(jsDoubleNumber(tan(exec->argument(0).toNumber(exec))));
+}
+
+} // namespace JSC