dart::kernel::LibraryHelper Class Reference

#include <kernel_translation_helper.h>

Public Types
enum	Field {   kFlags , kLanguageVersion , kCanonicalName , kName ,   kSourceUriIndex , kProblemsAsJson , kAnnotations , kDependencies }
enum	Flag {   kSynthetic = 1 << 0 , kIsLegacy = 1 << 1 , kNonNullableByDefaultCompiledModeBit1 = 1 << 2 , kNonNullableByDefaultCompiledModeBit2 = 1 << 3 ,   kUnsupported = 1 << 4 }

Public Member Functions
	LibraryHelper (KernelReaderHelper *helper)
void	ReadUntilIncluding (Field field)
void	ReadUntilExcluding (Field field)
void	SetNext (Field field)
void	SetJustRead (Field field)
bool	IsSynthetic () const
bool	IsNonNullableByDefault () const
NNBDCompiledMode	GetNonNullableByDefaultCompiledMode () const

Public Attributes
uint8_t	flags_ = 0
NameIndex	canonical_name_
StringIndex	name_index_
intptr_t	source_uri_index_ = 0

Detailed Description

Definition at line 823 of file kernel_translation_helper.h.

Member Enumeration Documentation

Field

enum dart::kernel::LibraryHelper::Field

Enumerator
kFlags
kLanguageVersion
kCanonicalName
kName
kSourceUriIndex
kProblemsAsJson
kAnnotations
kDependencies

Definition at line 825 of file kernel_translation_helper.h.

             {
    kFlags,
    kLanguageVersion /* from binary version 27 */,
    kCanonicalName,
    kName,
    kSourceUriIndex,
    kProblemsAsJson,
    kAnnotations,
    kDependencies,
    // There are other fields in a library:
    // * kAdditionalExports
    // * kParts
    // * kTypedefs
    // * kClasses
    // * kExtensions
    // * kExtensionTypeDeclarations
    // * kToplevelField
    // * kToplevelProcedures
    // * kSourceReferences
    // * kLibraryIndex
    // but we never read them via this helper and it makes extending the format
    // harder to keep the code around.
  };

Flag

enum dart::kernel::LibraryHelper::Flag

Enumerator
kSynthetic
kIsLegacy
kNonNullableByDefaultCompiledModeBit1
kNonNullableByDefaultCompiledModeBit2
kUnsupported

Definition at line 849 of file kernel_translation_helper.h.

            {
    kSynthetic = 1 << 0,
    kIsLegacy = 1 << 1,
    kNonNullableByDefaultCompiledModeBit1 = 1 << 2,
    kNonNullableByDefaultCompiledModeBit2 = 1 << 3,
    kUnsupported = 1 << 4,
  };

Constructor & Destructor Documentation

LibraryHelper()

dart::kernel::LibraryHelper::LibraryHelper ( KernelReaderHelper *  helper )

inlineexplicit

Definition at line 857 of file kernel_translation_helper.h.

      : helper_(helper), next_read_(kFlags) {}

Member Function Documentation

GetNonNullableByDefaultCompiledMode()

NNBDCompiledMode dart::kernel::LibraryHelper::GetNonNullableByDefaultCompiledMode ( ) const

inline

Definition at line 871 of file kernel_translation_helper.h.

                                                               {
    bool bit1 = (flags_ & kNonNullableByDefaultCompiledModeBit1) != 0;
    bool bit2 = (flags_ & kNonNullableByDefaultCompiledModeBit2) != 0;
    if (!bit1 && !bit2) return NNBDCompiledMode::kStrong;
    if (bit1 && !bit2) return NNBDCompiledMode::kWeak;
    if (bit1 && bit2) return NNBDCompiledMode::kAgnostic;
    if (!bit1 && bit2) return NNBDCompiledMode::kInvalid;
    UNREACHABLE();
  }

IsNonNullableByDefault()

bool dart::kernel::LibraryHelper::IsNonNullableByDefault ( ) const

inline

Definition at line 870 of file kernel_translation_helper.h.

{ return (flags_ & kIsLegacy) == 0; }

IsSynthetic()

bool dart::kernel::LibraryHelper::IsSynthetic ( ) const

inline

Definition at line 869 of file kernel_translation_helper.h.

{ return (flags_ & kSynthetic) != 0; }

ReadUntilExcluding()

void dart::kernel::LibraryHelper::ReadUntilExcluding

(

Field

field

)

Definition at line 1433 of file kernel_translation_helper.cc.

                                                  {
  if (field <= next_read_) return;
 
  // Ordered with fall-through.
  switch (next_read_) {
    // Note that this (up to canonical name) needs to be kept in sync with
    // "library_canonical_name" (currently in "kernel_loader.h").
    case kFlags: {
      flags_ = helper_->ReadFlags();
      if (++next_read_ == field) return;
      FALL_THROUGH;
    }
    case kLanguageVersion: {
      helper_->ReadUInt();  // Read major language version.
      helper_->ReadUInt();  // Read minor language version.
      if (++next_read_ == field) return;
      FALL_THROUGH;
    }
    case kCanonicalName:
      canonical_name_ =
          helper_->ReadCanonicalNameReference();  // read canonical_name.
      if (++next_read_ == field) return;
      FALL_THROUGH;
    case kName:
      name_index_ = helper_->ReadStringReference();  // read name index.
      if (++next_read_ == field) return;
      FALL_THROUGH;
    case kSourceUriIndex:
      source_uri_index_ = helper_->ReadUInt();  // read source_uri_index.
      helper_->set_current_script_id(source_uri_index_);
      if (++next_read_ == field) return;
      FALL_THROUGH;
    case kProblemsAsJson: {
      intptr_t length = helper_->ReadUInt();  // read length of table.
      for (intptr_t i = 0; i < length; ++i) {
        helper_->SkipBytes(helper_->ReadUInt());  // read strings.
      }
      if (++next_read_ == field) return;
    }
      FALL_THROUGH;
    case kAnnotations:
      helper_->SkipListOfExpressions();  // read annotations.
      if (++next_read_ == field) return;
      FALL_THROUGH;
    case kDependencies: {
      intptr_t dependency_count = helper_->ReadUInt();  // read list length.
      for (intptr_t i = 0; i < dependency_count; ++i) {
        helper_->SkipLibraryDependency();
      }
      if (++next_read_ == field) return;
    }
      return;
  }
}

ReadUntilIncluding()

void dart::kernel::LibraryHelper::ReadUntilIncluding ( Field  field )

inline

Definition at line 860 of file kernel_translation_helper.h.

                                       {
    ReadUntilExcluding(static_cast<Field>(static_cast<int>(field) + 1));
  }

SetJustRead()

void dart::kernel::LibraryHelper::SetJustRead ( Field  field )

inline

Definition at line 867 of file kernel_translation_helper.h.

{ next_read_ = field + 1; }

SetNext()

void dart::kernel::LibraryHelper::SetNext ( Field  field )

inline

Definition at line 866 of file kernel_translation_helper.h.

{ next_read_ = field; }

Member Data Documentation

canonical_name_

NameIndex dart::kernel::LibraryHelper::canonical_name_

Definition at line 882 of file kernel_translation_helper.h.

flags_

uint8_t dart::kernel::LibraryHelper::flags_ = 0

Definition at line 881 of file kernel_translation_helper.h.

name_index_

StringIndex dart::kernel::LibraryHelper::name_index_

Definition at line 883 of file kernel_translation_helper.h.

source_uri_index_

intptr_t dart::kernel::LibraryHelper::source_uri_index_ = 0

Definition at line 884 of file kernel_translation_helper.h.

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

• third_party/dart-lang/sdk/runtime/vm/compiler/frontend/kernel_translation_helper.h
• third_party/dart-lang/sdk/runtime/vm/compiler/frontend/kernel_translation_helper.cc