dart::UntaggedObject::SizeTag Class Reference

#include <raw_object.h>

Public Types
typedef intptr_t	Type

Static Public Member Functions
static constexpr uword	encode (intptr_t size)
static constexpr uword	decode (uword tag)
static constexpr uword	update (intptr_t size, uword tag)
static constexpr bool	SizeFits (intptr_t size)

Static Public Attributes
static constexpr intptr_t	kMaxSizeTagInUnitsOfAlignment
static constexpr intptr_t	kMaxSizeTag

Detailed Description

Definition at line 192 of file raw_object.h.

Member Typedef Documentation

Type

typedef intptr_t dart::UntaggedObject::SizeTag::Type

Definition at line 194 of file raw_object.h.

Member Function Documentation

decode()

static constexpr uword dart::UntaggedObject::SizeTag::decode ( uword  tag )

inlinestaticconstexpr

Definition at line 205 of file raw_object.h.

                                             {
      return TagValueToSize(SizeBits::decode(tag));
    }

encode()

static constexpr uword dart::UntaggedObject::SizeTag::encode ( intptr_t  size )

inlinestaticconstexpr

Definition at line 201 of file raw_object.h.

                                                 {
      return SizeBits::encode(SizeToTagValue(size));
    }

SizeFits()

static constexpr bool dart::UntaggedObject::SizeTag::SizeFits ( intptr_t  size )

inlinestaticconstexpr

Definition at line 213 of file raw_object.h.

                                                  {
      assert(Utils::IsAligned(size, kObjectAlignment));
      return (size <= kMaxSizeTag);
    }

update()

static constexpr uword dart::UntaggedObject::SizeTag::update ( intptr_t  size, uword  tag  )

inlinestaticconstexpr

Definition at line 209 of file raw_object.h.

                                                            {
      return SizeBits::update(SizeToTagValue(size), tag);
    }

Member Data Documentation

kMaxSizeTag

constexpr intptr_t dart::UntaggedObject::SizeTag::kMaxSizeTag

staticconstexpr

Initial value:

=
        kMaxSizeTagInUnitsOfAlignment * kObjectAlignment

Definition at line 198 of file raw_object.h.

kMaxSizeTagInUnitsOfAlignment

constexpr intptr_t dart::UntaggedObject::SizeTag::kMaxSizeTagInUnitsOfAlignment

staticconstexpr

Initial value:

=
        ((1 << UntaggedObject::kSizeTagSize) - 1)

Definition at line 196 of file raw_object.h.

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The documentation for this class was generated from the following file:

• third_party/dart-lang/sdk/runtime/vm/raw_object.h