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 , kNonNullableByDefaultCompiledModeBit1 = 1 << 1 , kNonNullableByDefaultCompiledModeBit2 = 1 << 2 , kUnsupported = 1 << 3 }

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
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
kNonNullableByDefaultCompiledModeBit1
kNonNullableByDefaultCompiledModeBit2
kUnsupported

Definition at line 849 of file kernel_translation_helper.h.

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

Constructor & Destructor Documentation

LibraryHelper()

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

inlineexplicit

Definition at line 856 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 869 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();
  }

IsSynthetic()

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

inline

Definition at line 868 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 859 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 866 of file kernel_translation_helper.h.

{ next_read_ = field + 1; }

SetNext()

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

inline

Definition at line 865 of file kernel_translation_helper.h.

{ next_read_ = field; }

Member Data Documentation

canonical_name_

NameIndex dart::kernel::LibraryHelper::canonical_name_

Definition at line 880 of file kernel_translation_helper.h.

flags_

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

Definition at line 879 of file kernel_translation_helper.h.

name_index_

StringIndex dart::kernel::LibraryHelper::name_index_

Definition at line 881 of file kernel_translation_helper.h.

source_uri_index_

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

Definition at line 882 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