dart::kernel::ActiveTypeParametersScope Class Reference

#include <kernel_translation_helper.h>

Public Member Functions
	ActiveTypeParametersScope (ActiveClass *active_class, const Function &innermost, const FunctionType *innermost_signature, Zone *Z)
	ActiveTypeParametersScope (ActiveClass *active_class, const FunctionType *innermost_signature, Zone *Z)
	~ActiveTypeParametersScope ()

Detailed Description

Definition at line 1510 of file kernel_translation_helper.h.

Constructor & Destructor Documentation

ActiveTypeParametersScope() [1/2]

dart::kernel::ActiveTypeParametersScope::ActiveTypeParametersScope	(	ActiveClass *	active_class,
		const Function &	innermost,
		const FunctionType *	innermost_signature,
		Zone *	Z
	)

Definition at line 3218 of file kernel_translation_helper.cc.

    : active_class_(active_class), saved_(*active_class), zone_(Z) {
  active_class_->enclosing = innermost_signature;
 
  intptr_t num_params = 0;
 
  Function& f = Function::Handle(Z);
  for (f = innermost.ptr(); f.parent_function() != Object::null();
       f = f.parent_function()) {
    num_params += f.NumTypeParameters();
  }
  if (num_params == 0) return;
 
  TypeArguments& params =
      TypeArguments::Handle(Z, TypeArguments::New(num_params));
 
  intptr_t index = num_params;
  for (f = innermost.ptr(); f.parent_function() != Object::null();
       f = f.parent_function()) {
    for (intptr_t j = f.NumTypeParameters() - 1; j >= 0; --j) {
      const auto& type_param = TypeParameter::Handle(Z, f.TypeParameterAt(j));
      params.SetTypeAt(--index, type_param);
    }
  }
 
  active_class_->local_type_parameters = &params;
}

ActiveTypeParametersScope() [2/2]

dart::kernel::ActiveTypeParametersScope::ActiveTypeParametersScope	(	ActiveClass *	active_class,
		const FunctionType *	innermost_signature,
		Zone *	Z
	)

Definition at line 3250 of file kernel_translation_helper.cc.

    : active_class_(active_class), saved_(*active_class), zone_(Z) {
  active_class_->enclosing = innermost_signature;
 
  const intptr_t num_new_params =
      innermost_signature == nullptr ? active_class->klass->NumTypeParameters()
                                     : innermost_signature->NumTypeParameters();
  if (num_new_params == 0) return;
 
  const TypeArguments* old_params = active_class->local_type_parameters;
  const intptr_t old_param_count =
      old_params == nullptr ? 0 : old_params->Length();
  const TypeArguments& extended_params = TypeArguments::Handle(
      Z, TypeArguments::New(old_param_count + num_new_params));
 
  intptr_t index = 0;
  for (intptr_t i = 0; i < old_param_count; ++i) {
    extended_params.SetTypeAt(index++,
                              AbstractType::Handle(Z, old_params->TypeAt(i)));
  }
  for (intptr_t i = 0; i < num_new_params; ++i) {
    const auto& type_param =
        TypeParameter::Handle(Z, innermost_signature == nullptr
                                     ? active_class->klass->TypeParameterAt(i)
                                     : innermost_signature->TypeParameterAt(i));
    extended_params.SetTypeAt(index++, type_param);
  }
 
  active_class_->local_type_parameters = &extended_params;
}

~ActiveTypeParametersScope()

dart::kernel::ActiveTypeParametersScope::~ActiveTypeParametersScope

(

)

Definition at line 3284 of file kernel_translation_helper.cc.

                                                      {
  *active_class_ = saved_;
}

---

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