dart::kernel::DirectCallMetadataHelper Class Reference

#include <kernel_translation_helper.h>

Inheritance diagram for dart::kernel::DirectCallMetadataHelper:

Public Member Functions
	DirectCallMetadataHelper (KernelReaderHelper *helper)
DirectCallMetadata	GetDirectTargetForPropertyGet (intptr_t node_offset)
DirectCallMetadata	GetDirectTargetForPropertySet (intptr_t node_offset)
DirectCallMetadata	GetDirectTargetForMethodInvocation (intptr_t node_offset)
DirectCallMetadata	GetDirectTargetForFunctionInvocation (intptr_t node_offset)
Public Member Functions inherited from dart::kernel::MetadataHelper
	MetadataHelper (KernelReaderHelper *helper, const char *tag, bool precompiler_only)

Static Public Member Functions
static const char *	tag ()

Additional Inherited Members
Protected Member Functions inherited from dart::kernel::MetadataHelper
intptr_t	FindMetadataMapping (intptr_t node_offset)
intptr_t	GetNextMetadataPayloadOffset (intptr_t node_offset)
intptr_t	GetComponentMetadataPayloadOffset ()
Protected Attributes inherited from dart::kernel::MetadataHelper
KernelReaderHelper *	helper_
TranslationHelper &	translation_helper_

Detailed Description

Definition at line 993 of file kernel_translation_helper.h.

Constructor & Destructor Documentation

DirectCallMetadataHelper()

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

explicit

Definition at line 1743 of file kernel_translation_helper.cc.

    : MetadataHelper(helper, tag(), /* precompiler_only = */ true) {}

Member Function Documentation

GetDirectTargetForFunctionInvocation()

DirectCallMetadata dart::kernel::DirectCallMetadataHelper::GetDirectTargetForFunctionInvocation

(

intptr_t

node_offset

)

Definition at line 1830 of file kernel_translation_helper.cc.

                          {
  NameIndex kernel_name;
  bool check_receiver_for_null = false;
  intptr_t closure_id = -1;
  if (!ReadMetadata(node_offset, &kernel_name, &check_receiver_for_null,
                    &closure_id)) {
    return DirectCallMetadata(Function::null_function(), false);
  }
 
  const auto& member =
      Object::Handle(helper_->zone_, H.LookupMemberByMember(kernel_name));
  Function& function = Function::ZoneHandle(helper_->zone_);
  if (member.IsField()) {
    const auto& field = Field::Cast(member);
    // Non-trivial initializers of instance non-late fields should be
    // inlined into constructors on kernel AST
    // during MoveFieldInitializers transformation.
    ASSERT(field.is_static() || field.is_late());
    ASSERT(field.has_nontrivial_initializer());
    function = field.EnsureInitializerFunction();
  } else {
    function = Function::Cast(member).ptr();
  }
 
  ASSERT(closure_id >= 0);
  if (closure_id == 0) {
    // Tear-off
    ASSERT(!member.IsField());
    function = function.ImplicitClosureFunction();
    ASSERT(!function.IsNull());
    return DirectCallMetadata(function, check_receiver_for_null);
  }
 
  // TODO(alexmarkov): support devirtualization of arbitrary closure calls.
  return DirectCallMetadata(Function::null_function(), false);
}

GetDirectTargetForMethodInvocation()

DirectCallMetadata dart::kernel::DirectCallMetadataHelper::GetDirectTargetForMethodInvocation

(

intptr_t

node_offset

)

Definition at line 1814 of file kernel_translation_helper.cc.

                          {
  NameIndex kernel_name;
  bool check_receiver_for_null = false;
  if (!ReadMetadata(node_offset, &kernel_name, &check_receiver_for_null)) {
    return DirectCallMetadata(Function::null_function(), false);
  }
 
  const String& method_name = H.DartProcedureName(kernel_name);
  const Function& target = Function::ZoneHandle(
      helper_->zone_, H.LookupMethodByMember(kernel_name, method_name));
 
  return DirectCallMetadata(target, check_receiver_for_null);
}

GetDirectTargetForPropertyGet()

DirectCallMetadata dart::kernel::DirectCallMetadataHelper::GetDirectTargetForPropertyGet

(

intptr_t

node_offset

)

Definition at line 1771 of file kernel_translation_helper.cc.

                          {
  NameIndex kernel_name;
  bool check_receiver_for_null = false;
  if (!ReadMetadata(node_offset, &kernel_name, &check_receiver_for_null)) {
    return DirectCallMetadata(Function::null_function(), false);
  }
 
  if (H.IsProcedure(kernel_name) && !H.IsGetter(kernel_name)) {
    // Tear-off. Use method extractor as direct call target.
    const String& method_name = H.DartMethodName(kernel_name);
    const Function& target_method = Function::ZoneHandle(
        helper_->zone_, H.LookupMethodByMember(kernel_name, method_name));
    const String& getter_name = H.DartGetterName(kernel_name);
    return DirectCallMetadata(
        Function::ZoneHandle(helper_->zone_,
                             target_method.GetMethodExtractor(getter_name)),
        check_receiver_for_null);
  } else {
    const String& getter_name = H.DartGetterName(kernel_name);
    const Function& target = Function::ZoneHandle(
        helper_->zone_, H.LookupMethodByMember(kernel_name, getter_name));
    ASSERT(target.IsGetterFunction() || target.IsImplicitGetterFunction());
    return DirectCallMetadata(target, check_receiver_for_null);
  }
}

GetDirectTargetForPropertySet()

DirectCallMetadata dart::kernel::DirectCallMetadataHelper::GetDirectTargetForPropertySet

(

intptr_t

node_offset

)

Definition at line 1798 of file kernel_translation_helper.cc.

                          {
  NameIndex kernel_name;
  bool check_receiver_for_null = false;
  if (!ReadMetadata(node_offset, &kernel_name, &check_receiver_for_null)) {
    return DirectCallMetadata(Function::null_function(), false);
  }
 
  const String& method_name = H.DartSetterName(kernel_name);
  const Function& target = Function::ZoneHandle(
      helper_->zone_, H.LookupMethodByMember(kernel_name, method_name));
  ASSERT(target.IsSetterFunction() || target.IsImplicitSetterFunction());
 
  return DirectCallMetadata(target, check_receiver_for_null);
}

tag()

static const char * dart::kernel::DirectCallMetadataHelper::tag ( )

inlinestatic

Definition at line 995 of file kernel_translation_helper.h.

{ return "vm.direct-call.metadata"; }

---

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