dart::kernel::ParameterDescriptorBuilder Class Reference

Inheritance diagram for dart::kernel::ParameterDescriptorBuilder:

Public Member Functions
	ParameterDescriptorBuilder (TranslationHelper *translation_helper, Zone *zone, const TypedDataView &data, intptr_t data_program_offset, ActiveClass *active_class)
ObjectPtr	BuildParameterDescriptor (const Function &function)
Public Member Functions inherited from dart::kernel::KernelReaderHelper
	KernelReaderHelper (Zone *zone, TranslationHelper *translation_helper, const TypedDataBase &data, intptr_t data_program_offset)
virtual	~KernelReaderHelper ()=default
void	SetOffset (intptr_t offset)
intptr_t	ReadListLength ()
NameIndex	ReadCanonicalNameReference ()
virtual void	ReportUnexpectedTag (const char *variant, Tag tag)
void	ReadUntilFunctionNode ()
Tag	PeekTag (uint8_t *payload=nullptr)

Additional Inherited Members
Protected Member Functions inherited from dart::kernel::KernelReaderHelper
virtual void	set_current_script_id (intptr_t id)
virtual void	RecordTokenPosition (TokenPosition position)
intptr_t	ReaderOffset () const
intptr_t	ReaderSize () const
void	SkipBytes (intptr_t skip)
bool	ReadBool ()
uint8_t	ReadByte ()
uint32_t	ReadUInt ()
uint32_t	ReadUInt32 ()
uint32_t	PeekUInt ()
double	ReadDouble ()
uint32_t	PeekListLength ()
StringIndex	ReadStringReference ()
NameIndex	ReadInterfaceMemberNameReference ()
StringIndex	ReadNameAsStringIndex ()
const String &	ReadNameAsMethodName ()
const String &	ReadNameAsGetterName ()
const String &	ReadNameAsSetterName ()
const String &	ReadNameAsFieldName ()
void	SkipFlags ()
void	SkipStringReference ()
void	SkipConstantReference ()
void	SkipCanonicalNameReference ()
void	SkipInterfaceMemberNameReference ()
void	SkipDartType ()
void	SkipOptionalDartType ()
void	SkipInterfaceType (bool simple)
void	SkipFunctionType (bool simple)
void	SkipStatementList ()
void	SkipListOfExpressions ()
void	SkipListOfNamedExpressions ()
void	SkipListOfDartTypes ()
void	SkipListOfStrings ()
void	SkipListOfVariableDeclarations ()
void	SkipListOfCanonicalNameReferences ()
void	SkipTypeParametersList ()
void	SkipInitializer ()
void	SkipExpression ()
void	SkipStatement ()
void	SkipFunctionNode ()
void	SkipName ()
void	SkipArguments ()
void	SkipVariableDeclaration ()
void	SkipLibraryCombinator ()
void	SkipLibraryDependency ()
TokenPosition	ReadPosition ()
Tag	ReadTag (uint8_t *payload=nullptr)
uint8_t	ReadFlags ()
Nullability	ReadNullability ()
Variance	ReadVariance ()
intptr_t	SourceTableSize ()
intptr_t	GetOffsetForSourceInfo (intptr_t index)
String &	SourceTableUriFor (intptr_t index)
const String &	GetSourceFor (intptr_t index)
TypedDataPtr	GetLineStartsFor (intptr_t index)
String &	SourceTableImportUriFor (intptr_t index)
TypedDataViewPtr	GetConstantCoverageFor (intptr_t index)
Protected Attributes inherited from dart::kernel::KernelReaderHelper
Zone *	zone_
TranslationHelper &	translation_helper_
Reader	reader_
intptr_t	data_program_offset_

Detailed Description

Definition at line 495 of file kernel.cc.

Constructor & Destructor Documentation

ParameterDescriptorBuilder()

dart::kernel::ParameterDescriptorBuilder::ParameterDescriptorBuilder ( TranslationHelper *  translation_helper, Zone *  zone, const TypedDataView &  data, intptr_t  data_program_offset, ActiveClass *  active_class  )

inline

Definition at line 497 of file kernel.cc.

      : KernelReaderHelper(zone, translation_helper, data, data_program_offset),
        constant_reader_(this, active_class) {}

Member Function Documentation

BuildParameterDescriptor()

ObjectPtr dart::kernel::ParameterDescriptorBuilder::BuildParameterDescriptor

(

const Function &

function

)

Definition at line 513 of file kernel.cc.

                              {
  SetOffset(function.kernel_offset());
  ReadUntilFunctionNode();
  FunctionNodeHelper function_node_helper(this);
  function_node_helper.ReadUntilExcluding(
      FunctionNodeHelper::kPositionalParameters);
  intptr_t param_count = function_node_helper.total_parameter_count_;
  intptr_t positional_count = ReadListLength();  // read list length.
  intptr_t named_parameter_count = param_count - positional_count;
 
  const Array& param_descriptor = Array::Handle(
      Array::New(param_count * Parser::kParameterEntrySize, Heap::kOld));
  for (intptr_t i = 0; i < param_count; ++i) {
    const intptr_t entry_start = i * Parser::kParameterEntrySize;
 
    if (i == positional_count) {
      intptr_t named_parameter_count_check =
          ReadListLength();  // read list length.
      ASSERT(named_parameter_count_check == named_parameter_count);
    }
 
    // Read ith variable declaration.
    intptr_t param_kernel_offset = reader_.offset();
    VariableDeclarationHelper helper(this);
    helper.ReadUntilExcluding(VariableDeclarationHelper::kInitializer);
    param_descriptor.SetAt(entry_start + Parser::kParameterIsFinalOffset,
                           helper.IsFinal() ? Bool::True() : Bool::False());
 
    Tag tag = ReadTag();  // read (first part of) initializer.
    if ((tag == kSomething) && !function.is_abstract()) {
      // This will read the initializer.
      Instance& constant = Instance::ZoneHandle(
          zone_, constant_reader_.ReadConstantExpression());
      param_descriptor.SetAt(entry_start + Parser::kParameterDefaultValueOffset,
                             constant);
    } else {
      if (tag == kSomething) {
        SkipExpression();  // Skip initializer.
      }
      param_descriptor.SetAt(entry_start + Parser::kParameterDefaultValueOffset,
                             Object::null_instance());
    }
 
    if (FLAG_enable_mirrors && (helper.annotation_count_ > 0)) {
      AlternativeReadingScope alt(&reader_, param_kernel_offset);
      VariableDeclarationHelper helper(this);
      helper.ReadUntilExcluding(VariableDeclarationHelper::kAnnotations);
      Object& metadata =
          Object::ZoneHandle(zone_, constant_reader_.ReadAnnotations());
      param_descriptor.SetAt(entry_start + Parser::kParameterMetadataOffset,
                             metadata);
    } else {
      param_descriptor.SetAt(entry_start + Parser::kParameterMetadataOffset,
                             Object::null_instance());
    }
  }
  return param_descriptor.ptr();
}

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

• third_party/dart-lang/sdk/runtime/vm/kernel.cc