JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / runtime / NumberConstructor.cpp

diff --git a/runtime/NumberConstructor.cpp b/runtime/NumberConstructor.cpp
index caa4a704b371b6e402169ef75479535ceebdef08..0a21512d3b1444ad3e9e4069c6832f29cf3a01dd 100644 (file)
--- a/runtime/NumberConstructor.cpp
+++ b/runtime/NumberConstructor.cpp
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)
 /*
  *  Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)

- *  Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *  Copyright (C) 2007, 2008, 2011 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
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public


@@ -22,102 +22,131 @@
 #include "config.h"
 #include "NumberConstructor.h"
 
 #include "config.h"
 #include "NumberConstructor.h"
 

+#include "Lookup.h"

 #include "NumberObject.h"
 #include "NumberPrototype.h"
 #include "NumberObject.h"
 #include "NumberPrototype.h"

+#include "JSCInlines.h"
+#include "JSGlobalObjectFunctions.h"

 
 namespace JSC {
 
 
 namespace JSC {
 

-ASSERT_CLASS_FITS_IN_CELL(NumberConstructor);
-
-static JSValuePtr numberConstructorNaNValue(ExecState*, const Identifier&, const PropertySlot&);
-static JSValuePtr numberConstructorNegInfinity(ExecState*, const Identifier&, const PropertySlot&);
-static JSValuePtr numberConstructorPosInfinity(ExecState*, const Identifier&, const PropertySlot&);
-static JSValuePtr numberConstructorMaxValue(ExecState*, const Identifier&, const PropertySlot&);
-static JSValuePtr numberConstructorMinValue(ExecState*, const Identifier&, const PropertySlot&);
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsFinite(ExecState*);
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState*);
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsNaN(ExecState*);
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState*);

 
 } // namespace JSC
 
 
 } // namespace JSC
 

-#include "NumberConstructor.lut.h"
-

 namespace JSC {
 
 namespace JSC {
 

-const ClassInfo NumberConstructor::info = { "Function", &InternalFunction::info, 0, ExecState::numberTable };
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NumberConstructor);

 
 

-/* Source for NumberConstructor.lut.h
-@begin numberTable
-   NaN                   numberConstructorNaNValue       DontEnum|DontDelete|ReadOnly
-   NEGATIVE_INFINITY     numberConstructorNegInfinity    DontEnum|DontDelete|ReadOnly
-   POSITIVE_INFINITY     numberConstructorPosInfinity    DontEnum|DontDelete|ReadOnly
-   MAX_VALUE             numberConstructorMaxValue       DontEnum|DontDelete|ReadOnly
-   MIN_VALUE             numberConstructorMinValue       DontEnum|DontDelete|ReadOnly
-@end
-*/
+const ClassInfo NumberConstructor::s_info = { "Function", &InternalFunction::s_info, 0, CREATE_METHOD_TABLE(NumberConstructor) };

 
 

-NumberConstructor::NumberConstructor(ExecState* exec, PassRefPtr<Structure> structure, NumberPrototype* numberPrototype)
-    : InternalFunction(&exec->globalData(), structure, Identifier(exec, numberPrototype->info.className))
+NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
+    : InternalFunction(vm, structure)

 {
 {

-    // Number.Prototype
-    putDirectWithoutTransition(exec->propertyNames().prototype, numberPrototype, DontEnum | DontDelete | ReadOnly);
-
-    // no. of arguments for constructor
-    putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);

 }
 
 }
 

-bool NumberConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)

 {
 {

-    return getStaticValueSlot<NumberConstructor, InternalFunction>(exec, ExecState::numberTable(exec), this, propertyName, slot);
-}
+    Base::finishCreation(vm, NumberPrototype::info()->className);
+    ASSERT(inherits(info()));

 
 

-JSValuePtr numberConstructorNaNValue(ExecState* exec, const Identifier&, const PropertySlot&)
-{
-    return jsNaN(exec);
+    // Number.Prototype
+    putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, DontEnum | DontDelete | ReadOnly);
+
+    // no. of arguments for constructor
+    putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
+
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "EPSILON"), jsDoubleNumber(std::numeric_limits<double>::epsilon()), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_VALUE"), jsDoubleNumber(1.7976931348623157E+308), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_VALUE"), jsDoubleNumber(5E-324), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_SAFE_INTEGER"), jsDoubleNumber(9007199254740991.0), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_SAFE_INTEGER"), jsDoubleNumber(-9007199254740991.0), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NEGATIVE_INFINITY"), jsDoubleNumber(-std::numeric_limits<double>::infinity()), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "POSITIVE_INFINITY"), jsDoubleNumber(std::numeric_limits<double>::infinity()), DontDelete | DontEnum | ReadOnly);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NaN"), jsNaN(), DontDelete | DontEnum | ReadOnly);
+
+    putDirectNativeFunctionWithoutTransition(vm, numberPrototype->globalObject(), Identifier::fromString(&vm, "isFinite"), 1, numberConstructorFuncIsFinite, NoIntrinsic, DontEnum | Function);
+    putDirectNativeFunctionWithoutTransition(vm, numberPrototype->globalObject(), Identifier::fromString(&vm, "isInteger"), 1, numberConstructorFuncIsInteger, NoIntrinsic, DontEnum | Function);
+    putDirectNativeFunctionWithoutTransition(vm, numberPrototype->globalObject(), Identifier::fromString(&vm, "isNaN"), 1, numberConstructorFuncIsNaN, NoIntrinsic, DontEnum | Function);
+    putDirectNativeFunctionWithoutTransition(vm, numberPrototype->globalObject(), Identifier::fromString(&vm, "isSafeInteger"), 1, numberConstructorFuncIsSafeInteger, NoIntrinsic, DontEnum | Function);
+    putDirectNativeFunctionWithoutTransition(vm, numberPrototype->globalObject(), Identifier::fromString(&vm, "parseFloat"), 1, globalFuncParseFloat, NoIntrinsic, DontEnum | Function);
+    putDirectWithoutTransition(vm, Identifier::fromString(&vm, "parseInt"), numberPrototype->globalObject()->parseIntFunction(), DontEnum | Function);

 }
 
 }
 

-JSValuePtr numberConstructorNegInfinity(ExecState* exec, const Identifier&, const PropertySlot&)
+// ECMA 15.7.1
+static EncodedJSValue JSC_HOST_CALL constructWithNumberConstructor(ExecState* exec)

 {
 {

-    return jsNumber(exec, -Inf);
+    NumberObject* object = NumberObject::create(exec->vm(), asInternalFunction(exec->callee())->globalObject()->numberObjectStructure());
+    double n = exec->argumentCount() ? exec->uncheckedArgument(0).toNumber(exec) : 0;
+    object->setInternalValue(exec->vm(), jsNumber(n));
+    return JSValue::encode(object);

 }
 
 }
 

-JSValuePtr numberConstructorPosInfinity(ExecState* exec, const Identifier&, const PropertySlot&)
+ConstructType NumberConstructor::getConstructData(JSCell*, ConstructData& constructData)

 {
 {

-    return jsNumber(exec, Inf);
+    constructData.native.function = constructWithNumberConstructor;
+    return ConstructTypeHost;

 }
 
 }
 

-JSValuePtr numberConstructorMaxValue(ExecState* exec, const Identifier&, const PropertySlot&)
+// ECMA 15.7.2
+static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)

 {
 {

-    return jsNumber(exec, 1.7976931348623157E+308);
+    return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));

 }
 
 }
 

-JSValuePtr numberConstructorMinValue(ExecState* exec, const Identifier&, const PropertySlot&)
+CallType NumberConstructor::getCallData(JSCell*, CallData& callData)

 {
 {

-    return jsNumber(exec, 5E-324);
+    callData.native.function = callNumberConstructor;
+    return CallTypeHost;

 }
 
 }
 

-// ECMA 15.7.1
-static JSObject* constructWithNumberConstructor(ExecState* exec, JSObject*, const ArgList& args)
+// ECMA-262 20.1.2.2
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsFinite(ExecState* exec)

 {
 {

-    NumberObject* object = new (exec) NumberObject(exec->lexicalGlobalObject()->numberObjectStructure());
-    double n = args.isEmpty() ? 0 : args.at(exec, 0).toNumber(exec);
-    object->setInternalValue(jsNumber(exec, n));
-    return object;
+    JSValue argument = exec->argument(0);
+    return JSValue::encode(jsBoolean(argument.isNumber() && (argument.isInt32() || std::isfinite(argument.asDouble()))));

 }
 
 }
 

-ConstructType NumberConstructor::getConstructData(ConstructData& constructData)
+// ECMA-262 20.1.2.3
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState* exec)

 {
 {

-    constructData.native.function = constructWithNumberConstructor;
-    return ConstructTypeHost;
+    JSValue argument = exec->argument(0);
+    bool isInteger;
+    if (argument.isInt32())
+        isInteger = true;
+    else if (!argument.isDouble())
+        isInteger = false;
+    else {
+        double number = argument.asDouble();
+        isInteger = std::isfinite(number) && trunc(number) == number;
+    }
+    return JSValue::encode(jsBoolean(isInteger));

 }
 
 }
 

-// ECMA 15.7.2
-static JSValuePtr callNumberConstructor(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+// ECMA-262 20.1.2.4
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsNaN(ExecState* exec)

 {
 {

-    return jsNumber(exec, args.isEmpty() ? 0 : args.at(exec, 0).toNumber(exec));
+    JSValue argument = exec->argument(0);
+    return JSValue::encode(jsBoolean(argument.isDouble() && std::isnan(argument.asDouble())));

 }
 
 }
 

-CallType NumberConstructor::getCallData(CallData& callData)
+// ECMA-262 20.1.2.5
+static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState* exec)

 {
 {

-    callData.native.function = callNumberConstructor;
-    return CallTypeHost;
+    JSValue argument = exec->argument(0);
+    bool isInteger;
+    if (argument.isInt32())
+        isInteger = true;
+    else if (!argument.isDouble())
+        isInteger = false;
+    else {
+        double number = argument.asDouble();
+        isInteger = trunc(number) == number && std::abs(number) <= 9007199254740991.0;
+    }
+    return JSValue::encode(jsBoolean(isInteger));

 }
 
 } // namespace JSC
 }
 
 } // namespace JSC