зеркало из https://github.com/golang/tools.git
44 строки
1.3 KiB
Go
44 строки
1.3 KiB
Go
// Copyright 2024 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package typesinternal
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import (
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"go/types"
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"golang.org/x/tools/internal/aliases"
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)
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// ReceiverNamed returns the named type (if any) associated with the
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// type of recv, which may be of the form N or *N, or aliases thereof.
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// It also reports whether a Pointer was present.
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func ReceiverNamed(recv *types.Var) (isPtr bool, named *types.Named) {
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t := recv.Type()
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if ptr, ok := aliases.Unalias(t).(*types.Pointer); ok {
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isPtr = true
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t = ptr.Elem()
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}
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named, _ = aliases.Unalias(t).(*types.Named)
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return
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}
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// Unpointer returns T given *T or an alias thereof.
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// For all other types it is the identity function.
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// It does not look at underlying types.
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// The result may be an alias.
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//
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// Use this function to strip off the optional pointer on a receiver
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// in a field or method selection, without losing the named type
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// (which is needed to compute the method set).
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//
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// See also [typeparams.MustDeref], which removes one level of
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// indirection from the type, regardless of named types (analogous to
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// a LOAD instruction).
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func Unpointer(t types.Type) types.Type {
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if ptr, ok := aliases.Unalias(t).(*types.Pointer); ok {
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return ptr.Elem()
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}
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return t
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}
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