Qt 6.x
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Public Types | Public Member Functions | Static Public Member Functions | Static Protected Member Functions | List of all members
QV4::String Struct Reference

#include <qv4string_p.h>

+ Inheritance diagram for QV4::String:
+ Collaboration diagram for QV4::String:

Public Types

enum  { IsString = true }
 
- Public Types inherited from QV4::StringOrSymbol
enum  { IsStringOrSymbol = true }
 
- Public Types inherited from QV4::Managed
enum  {
  IsExecutionContext = false , IsString = false , IsStringOrSymbol = false , IsObject = false ,
  IsFunctionObject = false , IsErrorObject = false , IsArrayData = false
}
 
enum  { NInlineProperties = 0 }
 
enum  Type {
  Type_Invalid , Type_String , Type_Object , Type_Symbol ,
  Type_ArrayObject , Type_FunctionObject , Type_GeneratorObject , Type_BooleanObject ,
  Type_NumberObject , Type_StringObject , Type_SymbolObject , Type_DateObject ,
  Type_RegExpObject , Type_ErrorObject , Type_ArgumentsObject , Type_JsonObject ,
  Type_MathObject , Type_ProxyObject , Type_UrlObject , Type_UrlSearchParamsObject ,
  Type_ExecutionContext , Type_InternalClass , Type_SetIteratorObject , Type_MapIteratorObject ,
  Type_ArrayIteratorObject , Type_StringIteratorObject , Type_ForInIterator , Type_RegExp ,
  Type_V4Sequence , Type_QmlListProperty
}
 
- Public Types inherited from QV4::Value
using ManagedPtr = Managed *
 
- Public Types inherited from QV4::StaticValue
enum class  TagBit {
  SpecialNegative = 0b10000000000000000000 << 12 , SpecialQNaN = 0b00000000000010000000 << 12 , Special = 0b00000000000001000000 << 12 , IntCompat = 0b00000000000000100000 << 12 ,
  Unmanaged = 0b00000000000000010000 << 12 , IntOrBool = 0b00000000000000001000 << 12 , Number = 0b00000000000000000100 << 12
}
 
enum  Type {
  Managed_Type = 0 , Double_Type = 1 , Undefined_Type = 2 , Empty_Type = quint32(TagBit::Unmanaged) ,
  Null_Type = Empty_Type | quint32(TagBit::IntCompat) , Boolean_Type = Null_Type | quint32(TagBit::IntOrBool) , Integer_Type = Boolean_Type | quint32(TagBit::Number)
}
 
enum  {
  Tag_Shift = 32 , IsIntegerConvertible_Shift = 48 , IsIntegerConvertible_Value = 3 , IsIntegerOrBool_Shift = 47 ,
  IsIntegerOrBool_Value = 7
}
 
enum class  QuickType : quint32 {
  Managed = Managed_Type , Empty = Empty_Type , Null = Null_Type , Boolean = Boolean_Type ,
  Integer = Integer_Type , PlusInf = quint32(TagBit::Number) | quint32(TagBit::Special) | quint32(TagBit::Unmanaged) , MinusInf = PlusInf | quint32(TagBit::SpecialNegative) , NaN = PlusInf | quint32(TagBit::SpecialQNaN) ,
  MinusNaN = NaN | quint32(TagBit::SpecialNegative)
}
 
enum  {
  QT_Empty = Empty_Type , QT_Null = Null_Type , QT_Bool = Boolean_Type , QT_Int = Integer_Type ,
  QuickType_Shift = Tag_Shift
}
 
using HeapBasePtr = Heap::Base *
 
using ValueTypeInternal = QuickType
 

Public Member Functions

uchar subtype () const
 
void setSubtype (uchar subtype) const
 
bool equals (String *other) const
 
bool isEqualTo (const String *other) const
 
bool lessThan (const String *other)
 
QString toQString () const
 
unsigned hashValue () const
 
uint toUInt (bool *ok) const
 
Q_NEVER_INLINE void createPropertyKeyImpl () const
 
bool startsWithUpper () const
 
- Public Member Functions inherited from QV4::StringOrSymbol
PropertyKey propertyKey () const
 
PropertyKey toPropertyKey () const
 
QString toQString () const
 
- Public Member Functions inherited from QV4::Managed
Heap::InternalClass * internalClass () const
 
const VTable * vtable () const
 
ExecutionEngine * engine () const
 
bool isV4SequenceType () const
 
bool isQmlListPropertyType () const
 
bool isArrayLike () const
 
bool isArrayObject () const
 
bool isStringObject () const
 
bool isSymbolObject () const
 
QString className () const
 
bool isEqualTo (const Managed *other) const
 
bool inUse () const
 
bool markBit () const
 
void mark (MarkStack *markStack)
 
Q_ALWAYS_INLINE Heap::Base * heapObject () const
 
template<typename T >
T * cast ()
 
template<typename T >
const T * cast () const
 
- Public Member Functions inherited from QV4::Value
 Value ()=default
 
constexpr Value (quint64 val)
 
bool isString () const
 
bool isStringOrSymbol () const
 
bool isSymbol () const
 
bool isObject () const
 
bool isFunctionObject () const
 
QML_NEARLY_ALWAYS_INLINE String * stringValue () const
 
QML_NEARLY_ALWAYS_INLINE StringOrSymbol * stringOrSymbolValue () const
 
QML_NEARLY_ALWAYS_INLINE Symbol * symbolValue () const
 
QML_NEARLY_ALWAYS_INLINE Object * objectValue () const
 
QML_NEARLY_ALWAYS_INLINE ManagedPtr managed () const
 
QML_NEARLY_ALWAYS_INLINE Value::HeapBasePtr heapObject () const
 
int toUInt16 () const
 
int toInt32 () const
 
unsigned int toUInt32 () const
 
qint64 toLength () const
 
qint64 toIndex () const
 
bool toBoolean () const
 
double toInteger () const
 
ReturnedValue convertedToNumber () const
 
double toNumber () const
 
double toNumberImpl () const
 
QString toQStringNoThrow () const
 
QString toQString () const
 
QString toQString (bool *ok) const
 
Heap::String * toString (ExecutionEngine *e) const
 
QV4::PropertyKey toPropertyKey (ExecutionEngine *e) const
 
Heap::Object * toObject (ExecutionEngine *e) const
 
bool isPrimitive () const
 
template<typename T >
const T * as () const
 
template<typename T >
T * as ()
 
template<typename T >
T * cast ()
 
template<typename T >
const T * cast () const
 
uint asArrayLength (bool *ok) const
 
bool sameValue (Value other) const
 
bool sameValueZero (Value other) const
 
void mark (MarkStack *markStack)
 
Value & operator= (const ScopedValue &v)
 
Value & operator= (ReturnedValue v)
 
Value & operator= (ManagedPtr m)
 
Value & operator= (HeapBasePtr o)
 
template<typename T >
Value & operator= (const Scoped< T > &t)
 
template<>
const DateObject * as () const
 
- Public Member Functions inherited from QV4::StaticValue
 StaticValue ()=default
 
constexpr StaticValue (quint64 val)
 
StaticValue & operator= (ReturnedValue v)
 
template<typename Value >
StaticValue & operator= (const Value &)
 
template<typename Value >
const Value & asValue () const
 
template<typename Value >
Value & asValue ()
 
QV4_NEARLY_ALWAYS_INLINE constexpr quint64 & rawValueRef ()
 
QV4_NEARLY_ALWAYS_INLINE constexpr quint64 rawValue () const
 
QV4_NEARLY_ALWAYS_INLINE constexpr void setRawValue (quint64 raw)
 
QV4_NEARLY_ALWAYS_INLINE constexpr void setTagValue (quint32 tag, quint32 value)
 
QV4_NEARLY_ALWAYS_INLINE constexpr quint32 value () const
 
QV4_NEARLY_ALWAYS_INLINE constexpr quint32 tag () const
 
QV4_NEARLY_ALWAYS_INLINE constexpr void setTag (quint32 tag)
 
QV4_NEARLY_ALWAYS_INLINE constexpr int int_32 () const
 
QV4_NEARLY_ALWAYS_INLINE constexpr void setInt_32 (int i)
 
QV4_NEARLY_ALWAYS_INLINE uint uint_32 () const
 
QV4_NEARLY_ALWAYS_INLINE constexpr void setEmpty ()
 
Type type () const
 
quint64 quickType () const
 
bool isEmpty () const
 
bool isNull () const
 
bool isBoolean () const
 
bool isInteger () const
 
bool isNullOrUndefined () const
 
bool isUndefined () const
 
bool isDouble () const
 
bool isNumber () const
 
bool isManagedOrUndefined () const
 
bool isManaged () const
 
bool isIntOrBool () const
 
bool integerCompatible () const
 
bool isNaN () const
 
bool isPositiveInt () const
 
QV4_NEARLY_ALWAYS_INLINE double doubleValue () const
 
QV4_NEARLY_ALWAYS_INLINE void setDouble (double d)
 
bool isInt32 ()
 
double asDouble () const
 
bool booleanValue () const
 
int integerValue () const
 
bool tryIntegerConversion ()
 
bool toBoolean () const
 
int toInt32 () const
 
ReturnedValue * data_ptr ()
 
constexpr ReturnedValue asReturnedValue () const
 
template<>
StaticValue & operator= (const Value &value)
 
template<typename Managed >
StaticValue & operator= (const Managed &m)
 
template<>
Value & asValue ()
 
template<>
const Value & asValue () const
 

Static Public Member Functions

static uint createHashValue (const QChar *ch, int length, uint *subtype)
 
static uint createHashValue (const char *ch, int length, uint *subtype)
 
template<typename T >
static uint calculateHashValue (const T *ch, const T *end, uint *subtype)
 
- Static Public Member Functions inherited from QV4::Value
static constexpr Value fromStaticValue (StaticValue staticValue)
 
static Value fromHeapObject (HeapBasePtr m)
 
static bool toBooleanImpl (Value val)
 
static double toNumberImpl (Value v)
 
static Heap::String * toString (ExecutionEngine *e, Value val)
 
static Heap::Object * toObject (ExecutionEngine *e, Value val)
 
static constexpr Value fromReturnedValue (ReturnedValue val)
 
static double toInteger (double d)
 
static int toInt32 (double d)
 
static unsigned int toUInt32 (double d)
 
static constexpr Value emptyValue ()
 
static constexpr Value fromBoolean (bool b)
 
static constexpr Value fromInt32 (int i)
 
static constexpr Value undefinedValue ()
 
static constexpr Value nullValue ()
 
static Value fromDouble (double d)
 
static Value fromUInt32 (uint i)
 
- Static Public Member Functions inherited from QV4::StaticValue
static int valueOffset ()
 
static int tagOffset ()
 
static constexpr quint64 tagValue (quint32 tag, quint32 value)
 
static constexpr quint64 tagBitMask (TagBit bit)
 
static bool integerCompatible (StaticValue a, StaticValue b)
 
static bool bothDouble (StaticValue a, StaticValue b)
 
static QV4_NEARLY_ALWAYS_INLINE bool isInt32 (double d)
 
static constexpr StaticValue fromReturnedValue (ReturnedValue val)
 
static constexpr StaticValue emptyValue ()
 
static constexpr StaticValue fromBoolean (bool b)
 
static constexpr StaticValue fromInt32 (int i)
 
static constexpr StaticValue undefinedValue ()
 
static constexpr StaticValue nullValue ()
 
static StaticValue fromDouble (double d)
 
static StaticValue fromUInt32 (uint i)
 
static double toInteger (double d)
 
static int toInt32 (double d)
 
static unsigned int toUInt32 (double d)
 

Static Protected Member Functions

static bool virtualIsEqualTo (Managed *that, Managed *o)
 
static qint64 virtualGetLength (const Managed *m)
 
- Static Protected Member Functions inherited from QV4::Managed
static bool virtualIsEqualTo (Managed *m, Managed *other)
 

Additional Inherited Members

- Public Attributes inherited from QV4::StaticValue
quint64 _val
 
- Static Public Attributes inherited from QV4::StaticValue
static constexpr quint64 ExponentMask = 0b0111111111110000ull << 48
 
static constexpr quint64 Top1Mask = 0b1000000000000000ull << 48
 
static constexpr quint64 Upper3Mask = 0b0000000000001110ull << 48
 
static constexpr quint64 Lower5Mask = 0b0000000000011111ull
 
static constexpr quint64 ManagedMask = ExponentMask | quint64(TagBit::Unmanaged) << Tag_Shift
 
static constexpr quint64 DoubleMask = ManagedMask | quint64(TagBit::Special) << Tag_Shift
 
static constexpr quint64 NumberMask = ManagedMask | quint64(TagBit::Number) << Tag_Shift
 
static constexpr quint64 IntOrBoolMask = ManagedMask | quint64(TagBit::IntOrBool) << Tag_Shift
 
static constexpr quint64 IntCompatMask = ManagedMask | quint64(TagBit::IntCompat) << Tag_Shift
 
static constexpr quint64 EncodeMask = DoubleMask | NumberMask
 
static constexpr quint64 DoubleDiscriminator = ((quint64(TagBit::Unmanaged) | quint64(TagBit::Special)) << Tag_Shift)
 
static constexpr quint64 NumberDiscriminator = ((quint64(TagBit::Unmanaged) | quint64(TagBit::Number)) << Tag_Shift)
 
- Static Protected Attributes inherited from QV4::VTableBase
static constexpr VTable::Destroy virtualDestroy = nullptr
 
static constexpr VTable::IsEqualTo virtualIsEqualTo = nullptr
 
static constexpr VTable::Get virtualGet = nullptr
 
static constexpr VTable::Put virtualPut = nullptr
 
static constexpr VTable::DeleteProperty virtualDeleteProperty = nullptr
 
static constexpr VTable::HasProperty virtualHasProperty = nullptr
 
static constexpr VTable::GetOwnProperty virtualGetOwnProperty = nullptr
 
static constexpr VTable::DefineOwnProperty virtualDefineOwnProperty = nullptr
 
static constexpr VTable::IsExtensible virtualIsExtensible = nullptr
 
static constexpr VTable::PreventExtensions virtualPreventExtensions = nullptr
 
static constexpr VTable::GetPrototypeOf virtualGetPrototypeOf = nullptr
 
static constexpr VTable::SetPrototypeOf virtualSetPrototypeOf = nullptr
 
static constexpr VTable::GetLength virtualGetLength = nullptr
 
static constexpr VTable::OwnPropertyKeys virtualOwnPropertyKeys = nullptr
 
static constexpr VTable::InstanceOf virtualInstanceOf = nullptr
 
static constexpr VTable::Call virtualCall = nullptr
 
static constexpr VTable::CallAsConstructor virtualCallAsConstructor = nullptr
 
static constexpr VTable::CallWithMetaTypes virtualCallWithMetaTypes = nullptr
 
static constexpr VTable::ResolveLookupGetter virtualResolveLookupGetter = nullptr
 
static constexpr VTable::ResolveLookupSetter virtualResolveLookupSetter = nullptr
 
static constexpr VTable::Metacall virtualMetacall = nullptr
 

Detailed Description

Definition at line 158 of file qv4string_p.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum
Enumerator
IsString 

Definition at line 162 of file qv4string_p.h.

Member Function Documentation

◆ calculateHashValue()

template<typename T >
static uint QV4::String::calculateHashValue ( const T *  ch,
const T *  end,
uint *  subtype 
)
inlinestatic

Definition at line 212 of file qv4string_p.h.

References ch, QV4::charToUInt(), and QV4::stringToArrayIndex().

Referenced by QV4::Heap::StringOrSymbol::createHashValue().

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◆ createHashValue() [1/2]

static uint QV4::String::createHashValue ( const char *  ch,
int  length,
uint *  subtype 
)
inlinestatic

Definition at line 198 of file qv4string_p.h.

References ch.

◆ createHashValue() [2/2]

static uint QV4::String::createHashValue ( const QChar *  ch,
int  length,
uint *  subtype 
)
inlinestatic

Definition at line 192 of file qv4string_p.h.

References ch.

Referenced by QV4::IdentifierTable::asPropertyKey(), QV4::IdentifierTable::asPropertyKey(), QV4::IdentifierTable::insertString(), QV4::IdentifierTable::insertSymbol(), QHashedString::stringHash(), and QHashedString::stringHash().

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◆ createPropertyKeyImpl()

void String::createPropertyKeyImpl ( ) const

Definition at line 124 of file qv4string.cpp.

References d, engine, Q_ASSERT, QV4::Heap::StringOrSymbol::StringType_AddedString, and QV4::Heap::StringOrSymbol::subtype.

◆ equals()

bool QV4::String::equals ( String *  other) const
inline

Definition at line 169 of file qv4string_p.h.

References d, and other().

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◆ hashValue()

unsigned QV4::String::hashValue ( ) const
inline

Definition at line 184 of file qv4string_p.h.

References d.

◆ isEqualTo()

bool QV4::String::isEqualTo ( const String *  other) const
inline

Definition at line 172 of file qv4string_p.h.

References d, and other().

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◆ lessThan()

bool QV4::String::lessThan ( const String *  other)
inline

Definition at line 176 of file qv4string_p.h.

References other().

Referenced by QV4::Runtime::CompareGreaterThan::call(), QV4::Runtime::CompareLessThan::call(), QV4::Runtime::CompareGreaterEqual::call(), and QV4::Runtime::CompareLessEqual::call().

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◆ setSubtype()

void QV4::String::setSubtype ( uchar  subtype) const
inline

Definition at line 167 of file qv4string_p.h.

References d.

◆ startsWithUpper()

bool QV4::String::startsWithUpper ( ) const
inline

Definition at line 204 of file qv4string_p.h.

References d.

◆ subtype()

uchar QV4::String::subtype ( ) const
inline

Definition at line 166 of file qv4string_p.h.

References d.

◆ toQString()

QString QV4::String::toQString ( ) const
inline

Definition at line 180 of file qv4string_p.h.

References d.

Referenced by QV4::EvalFunction::evalCall(), QV4::RegExp::getSubstitution(), QV4::UrlSearchParamsPrototype::method_delete(), QV4::UrlSearchParamsPrototype::method_get(), QV4::UrlSearchParamsPrototype::method_getAll(), QV4::UrlSearchParamsPrototype::method_has(), QV4::UrlSearchParamsPrototype::method_set(), QV4::UrlPrototype::method_setHash(), QV4::UrlPrototype::method_setHost(), QV4::UrlPrototype::method_setHostname(), QV4::UrlPrototype::method_setHref(), QV4::UrlPrototype::method_setPassword(), QV4::UrlPrototype::method_setPathname(), QV4::UrlPrototype::method_setPort(), QV4::UrlPrototype::method_setProtocol(), QV4::UrlPrototype::method_setSearch(), QV4::UrlPrototype::method_setUsername(), and QV4::UrlCtor::virtualCallAsConstructor().

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◆ toUInt()

uint String::toUInt ( bool *  ok) const

Definition at line 106 of file qv4string.cpp.

References d, ok, QV4::RuntimeHelpers::stringToNumber(), QV4::Heap::StringOrSymbol::StringType_ArrayIndex, QV4::Heap::StringOrSymbol::StringType_Unknown, QV4::Heap::StringOrSymbol::subtype, and QV4::Heap::String::toQString().

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◆ virtualGetLength()

qint64 String::virtualGetLength ( const Managed *  m)
staticprotected

Definition at line 208 of file qv4string.cpp.

References d.

◆ virtualIsEqualTo()

bool String::virtualIsEqualTo ( Managed *  that,
Managed *  o 
)
staticprotected

Definition at line 43 of file qv4string.cpp.

References QV4::Heap::String::isEqualTo(), and o.

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The documentation for this struct was generated from the following files: