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// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build typeparams
// +build typeparams
package ast
import "go/token"
type (
// A FuncType node represents a function type.
FuncType struct {
Func token.Pos // position of "func" keyword (token.NoPos if there is no "func")
TParams *FieldList // type parameters; or nil
Params *FieldList // (incoming) parameters; non-nil
Results *FieldList // (outgoing) results; or nil
}
// A TypeSpec node represents a type declaration (TypeSpec production).
TypeSpec struct {
Doc *CommentGroup // associated documentation; or nil
Name *Ident // type name
TParams *FieldList // type parameters; or nil
Assign token.Pos // position of '=', if any
Type Expr // *Ident, *ParenExpr, *SelectorExpr, *StarExpr, or any of the *XxxTypes
Comment *CommentGroup // line comments; or nil
}
// A ListExpr node represents a list of expressions separated by commas.
// ListExpr nodes are used as index in IndexExpr nodes representing type
// or function instantiations with more than one type argument.
ListExpr struct {
ElemList []Expr
}
)
func (*ListExpr) exprNode() {}
func (x *ListExpr) Pos() token.Pos {
if len(x.ElemList) > 0 {
return x.ElemList[0].Pos()
}
return token.NoPos
}
func (x *ListExpr) End() token.Pos {
if len(x.ElemList) > 0 {
return x.ElemList[len(x.ElemList)-1].End()
}
return token.NoPos
}
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