Golang Object.GetName方法代码示例

// lookup returns the address of the named variable identified by obj
// that is local to function f or one of its enclosing functions.
// If escaping, the reference comes from a potentially escaping pointer
// expression and the referent must be heap-allocated.
//
func (f *Function) lookup(obj types.Object, escaping bool) Value {
	if v, ok := f.objects[obj]; ok {
		if escaping {
			// Walk up the chain of Captures.
			x := v
			for {
				if c, ok := x.(*Capture); ok {
					x = c.Outer
				} else {
					break
				}
			}
			// By construction, all captures are ultimately Allocs in the
			// naive SSA form.  Parameters are pre-spilled to the stack.
			x.(*Alloc).Heap = true
		}
		return v // function-local var (address)
	}

	// Definition must be in an enclosing function;
	// plumb it through intervening closures.
	if f.Enclosing == nil {
		panic("no Value for type.Object " + obj.GetName())
	}
	v := &Capture{f.Enclosing.lookup(obj, true)} // escaping
	f.objects[obj] = v
	f.FreeVars = append(f.FreeVars, v)
	return v
}

// addSpilledParam declares a parameter that is pre-spilled to the
// stack; the function body will load/store the spilled location.
// Subsequent registerization will eliminate spills where possible.
//
func (f *Function) addSpilledParam(obj types.Object) {
	name := obj.GetName()
	param := f.addParam(name, obj.GetType())
	spill := &Alloc{
		Name_: name + "~", // "~" means "spilled"
		Type_: pointer(obj.GetType()),
	}
	f.objects[obj] = spill
	f.Locals = append(f.Locals, spill)
	f.emit(spill)
	f.emit(&Store{Addr: spill, Val: param})
}

// addNamedLocal creates a local variable, adds it to function f and
// returns it.  Its name and type are taken from obj.  Subsequent
// calls to f.lookup(obj) will return the same local.
//
// Precondition: f.syntax != nil (i.e. a Go source function).
//
func (f *Function) addNamedLocal(obj types.Object) *Alloc {
	l := f.addLocal(obj.GetType())
	l.Name_ = obj.GetName()
	f.objects[obj] = l
	return l
}