+++ /dev/null
-/*
- * Copyright (C) 2011 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
- * 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 JSValueInlineMethods_h
-#define JSValueInlineMethods_h
-
-#include "JSValue.h"
-
-namespace JSC {
-
- ALWAYS_INLINE int32_t JSValue::toInt32(ExecState* exec) const
- {
- if (isInt32())
- return asInt32();
- return JSC::toInt32(toNumber(exec));
- }
-
- inline uint32_t JSValue::toUInt32(ExecState* exec) const
- {
- // See comment on JSC::toUInt32, above.
- return toInt32(exec);
- }
-
- inline bool JSValue::isUInt32() const
- {
- return isInt32() && asInt32() >= 0;
- }
-
- inline uint32_t JSValue::asUInt32() const
- {
- ASSERT(isUInt32());
- return asInt32();
- }
-
- inline double JSValue::asNumber() const
- {
- ASSERT(isNumber());
- return isInt32() ? asInt32() : asDouble();
- }
-
- inline JSValue jsNaN()
- {
- return JSValue(std::numeric_limits<double>::quiet_NaN());
- }
-
- inline JSValue::JSValue(char i)
- {
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(unsigned char i)
- {
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(short i)
- {
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(unsigned short i)
- {
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(unsigned i)
- {
- if (static_cast<int32_t>(i) < 0) {
- *this = JSValue(EncodeAsDouble, static_cast<double>(i));
- return;
- }
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(long i)
- {
- if (static_cast<int32_t>(i) != i) {
- *this = JSValue(EncodeAsDouble, static_cast<double>(i));
- return;
- }
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(unsigned long i)
- {
- if (static_cast<uint32_t>(i) != i) {
- *this = JSValue(EncodeAsDouble, static_cast<double>(i));
- return;
- }
- *this = JSValue(static_cast<uint32_t>(i));
- }
-
- inline JSValue::JSValue(long long i)
- {
- if (static_cast<int32_t>(i) != i) {
- *this = JSValue(EncodeAsDouble, static_cast<double>(i));
- return;
- }
- *this = JSValue(static_cast<int32_t>(i));
- }
-
- inline JSValue::JSValue(unsigned long long i)
- {
- if (static_cast<uint32_t>(i) != i) {
- *this = JSValue(EncodeAsDouble, static_cast<double>(i));
- return;
- }
- *this = JSValue(static_cast<uint32_t>(i));
- }
-
- inline JSValue::JSValue(double d)
- {
- const int32_t asInt32 = static_cast<int32_t>(d);
- if (asInt32 != d || (!asInt32 && signbit(d))) { // true for -0.0
- *this = JSValue(EncodeAsDouble, d);
- return;
- }
- *this = JSValue(static_cast<int32_t>(d));
- }
-
-#if USE(JSVALUE32_64)
- inline EncodedJSValue JSValue::encode(JSValue value)
- {
- return value.u.asInt64;
- }
-
- inline JSValue JSValue::decode(EncodedJSValue encodedJSValue)
- {
- JSValue v;
- v.u.asInt64 = encodedJSValue;
- return v;
- }
-
- inline JSValue::JSValue()
- {
- u.asBits.tag = EmptyValueTag;
- u.asBits.payload = 0;
- }
-
- inline JSValue::JSValue(JSNullTag)
- {
- u.asBits.tag = NullTag;
- u.asBits.payload = 0;
- }
-
- inline JSValue::JSValue(JSUndefinedTag)
- {
- u.asBits.tag = UndefinedTag;
- u.asBits.payload = 0;
- }
-
- inline JSValue::JSValue(JSTrueTag)
- {
- u.asBits.tag = BooleanTag;
- u.asBits.payload = 1;
- }
-
- inline JSValue::JSValue(JSFalseTag)
- {
- u.asBits.tag = BooleanTag;
- u.asBits.payload = 0;
- }
-
- inline JSValue::JSValue(HashTableDeletedValueTag)
- {
- u.asBits.tag = DeletedValueTag;
- u.asBits.payload = 0;
- }
-
- inline JSValue::JSValue(JSCell* ptr)
- {
- if (ptr)
- u.asBits.tag = CellTag;
- else
- u.asBits.tag = EmptyValueTag;
- u.asBits.payload = reinterpret_cast<int32_t>(ptr);
- }
-
- inline JSValue::JSValue(const JSCell* ptr)
- {
- if (ptr)
- u.asBits.tag = CellTag;
- else
- u.asBits.tag = EmptyValueTag;
- u.asBits.payload = reinterpret_cast<int32_t>(const_cast<JSCell*>(ptr));
- }
-
- inline JSValue::operator bool() const
- {
- ASSERT(tag() != DeletedValueTag);
- return tag() != EmptyValueTag;
- }
-
- inline bool JSValue::operator==(const JSValue& other) const
- {
- return u.asInt64 == other.u.asInt64;
- }
-
- inline bool JSValue::operator!=(const JSValue& other) const
- {
- return u.asInt64 != other.u.asInt64;
- }
-
- inline bool JSValue::isEmpty() const
- {
- return tag() == EmptyValueTag;
- }
-
- inline bool JSValue::isUndefined() const
- {
- return tag() == UndefinedTag;
- }
-
- inline bool JSValue::isNull() const
- {
- return tag() == NullTag;
- }
-
- inline bool JSValue::isUndefinedOrNull() const
- {
- return isUndefined() || isNull();
- }
-
- inline bool JSValue::isCell() const
- {
- return tag() == CellTag;
- }
-
- inline bool JSValue::isInt32() const
- {
- return tag() == Int32Tag;
- }
-
- inline bool JSValue::isDouble() const
- {
- return tag() < LowestTag;
- }
-
- inline bool JSValue::isTrue() const
- {
- return tag() == BooleanTag && payload();
- }
-
- inline bool JSValue::isFalse() const
- {
- return tag() == BooleanTag && !payload();
- }
-
- inline uint32_t JSValue::tag() const
- {
- return u.asBits.tag;
- }
-
- inline int32_t JSValue::payload() const
- {
- return u.asBits.payload;
- }
-
- inline int32_t JSValue::asInt32() const
- {
- ASSERT(isInt32());
- return u.asBits.payload;
- }
-
- inline double JSValue::asDouble() const
- {
- ASSERT(isDouble());
- return u.asDouble;
- }
-
- ALWAYS_INLINE JSCell* JSValue::asCell() const
- {
- ASSERT(isCell());
- return reinterpret_cast<JSCell*>(u.asBits.payload);
- }
-
- ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, double d)
- {
- u.asDouble = d;
- }
-
- inline JSValue::JSValue(int i)
- {
- u.asBits.tag = Int32Tag;
- u.asBits.payload = i;
- }
-
- inline bool JSValue::isNumber() const
- {
- return isInt32() || isDouble();
- }
-
- inline bool JSValue::isBoolean() const
- {
- return isTrue() || isFalse();
- }
-
- inline bool JSValue::asBoolean() const
- {
- ASSERT(isBoolean());
- return payload();
- }
-
-#else // USE(JSVALUE32_64)
-
- // JSValue member functions.
- inline EncodedJSValue JSValue::encode(JSValue value)
- {
- return value.u.ptr;
- }
-
- inline JSValue JSValue::decode(EncodedJSValue ptr)
- {
- return JSValue(reinterpret_cast<JSCell*>(ptr));
- }
-
- // 0x0 can never occur naturally because it has a tag of 00, indicating a pointer value, but a payload of 0x0, which is in the (invalid) zero page.
- inline JSValue::JSValue()
- {
- u.asInt64 = ValueEmpty;
- }
-
- // 0x4 can never occur naturally because it has a tag of 00, indicating a pointer value, but a payload of 0x4, which is in the (invalid) zero page.
- inline JSValue::JSValue(HashTableDeletedValueTag)
- {
- u.asInt64 = ValueDeleted;
- }
-
- inline JSValue::JSValue(JSCell* ptr)
- {
- u.ptr = ptr;
- }
-
- inline JSValue::JSValue(const JSCell* ptr)
- {
- u.ptr = const_cast<JSCell*>(ptr);
- }
-
- inline JSValue::operator bool() const
- {
- return u.ptr;
- }
-
- inline bool JSValue::operator==(const JSValue& other) const
- {
- return u.ptr == other.u.ptr;
- }
-
- inline bool JSValue::operator!=(const JSValue& other) const
- {
- return u.ptr != other.u.ptr;
- }
-
- inline bool JSValue::isEmpty() const
- {
- return u.asInt64 == ValueEmpty;
- }
-
- inline bool JSValue::isUndefined() const
- {
- return asValue() == JSValue(JSUndefined);
- }
-
- inline bool JSValue::isNull() const
- {
- return asValue() == JSValue(JSNull);
- }
-
- inline bool JSValue::isTrue() const
- {
- return asValue() == JSValue(JSTrue);
- }
-
- inline bool JSValue::isFalse() const
- {
- return asValue() == JSValue(JSFalse);
- }
-
- inline bool JSValue::asBoolean() const
- {
- ASSERT(isBoolean());
- return asValue() == JSValue(JSTrue);
- }
-
- inline int32_t JSValue::asInt32() const
- {
- ASSERT(isInt32());
- return static_cast<int32_t>(u.asInt64);
- }
-
- inline bool JSValue::isDouble() const
- {
- return isNumber() && !isInt32();
- }
-
- inline JSValue::JSValue(JSNullTag)
- {
- u.asInt64 = ValueNull;
- }
-
- inline JSValue::JSValue(JSUndefinedTag)
- {
- u.asInt64 = ValueUndefined;
- }
-
- inline JSValue::JSValue(JSTrueTag)
- {
- u.asInt64 = ValueTrue;
- }
-
- inline JSValue::JSValue(JSFalseTag)
- {
- u.asInt64 = ValueFalse;
- }
-
- inline bool JSValue::isUndefinedOrNull() const
- {
- // Undefined and null share the same value, bar the 'undefined' bit in the extended tag.
- return (u.asInt64 & ~TagBitUndefined) == ValueNull;
- }
-
- inline bool JSValue::isBoolean() const
- {
- return (u.asInt64 & ~1) == ValueFalse;
- }
-
- inline bool JSValue::isCell() const
- {
- return !(u.asInt64 & TagMask);
- }
-
- inline bool JSValue::isInt32() const
- {
- return (u.asInt64 & TagTypeNumber) == TagTypeNumber;
- }
-
- inline intptr_t reinterpretDoubleToIntptr(double value)
- {
- return bitwise_cast<intptr_t>(value);
- }
- inline double reinterpretIntptrToDouble(intptr_t value)
- {
- return bitwise_cast<double>(value);
- }
-
- ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, double d)
- {
- u.asInt64 = reinterpretDoubleToIntptr(d) + DoubleEncodeOffset;
- }
-
- inline JSValue::JSValue(int i)
- {
- u.asInt64 = TagTypeNumber | static_cast<uint32_t>(i);
- }
-
- inline double JSValue::asDouble() const
- {
- ASSERT(isDouble());
- return reinterpretIntptrToDouble(u.asInt64 - DoubleEncodeOffset);
- }
-
- inline bool JSValue::isNumber() const
- {
- return u.asInt64 & TagTypeNumber;
- }
-
- ALWAYS_INLINE JSCell* JSValue::asCell() const
- {
- ASSERT(isCell());
- return u.ptr;
- }
-
-#endif // USE(JSVALUE64)
-
-} // namespace JSC
-
-#endif // JSValueInlineMethods_h
projects / apple / javascriptcore.git / blobdiff