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// Copyright 2024 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.
// Package fillswitch identifies switches with missing cases.
//
// It reports a diagnostic for each type switch or 'enum' switch that
// has missing cases, and suggests a fix to fill them in.
//
// The possible cases are: for a type switch, each accessible named
// type T or pointer *T that is assignable to the interface type; and
// for an 'enum' switch, each accessible named constant of the same
// type as the switch value.
//
// For an 'enum' switch, it will suggest cases for all possible values of the
// type.
//
// type Suit int8
// const (
// Spades Suit = iota
// Hearts
// Diamonds
// Clubs
// )
//
// var s Suit
// switch s {
// case Spades:
// }
//
// It will report a diagnostic with a suggested fix to fill in the remaining
// cases:
//
// var s Suit
// switch s {
// case Spades:
// case Hearts:
// case Diamonds:
// case Clubs:
// default:
// panic(fmt.Sprintf("unexpected Suit: %v", s))
// }
//
// For a type switch, it will suggest cases for all types that implement the
// interface.
//
// var stmt ast.Stmt
// switch stmt.(type) {
// case *ast.IfStmt:
// }
//
// It will report a diagnostic with a suggested fix to fill in the remaining
// cases:
//
// var stmt ast.Stmt
// switch stmt.(type) {
// case *ast.IfStmt:
// case *ast.ForStmt:
// case *ast.RangeStmt:
// case *ast.AssignStmt:
// case *ast.GoStmt:
// ...
// default:
// panic(fmt.Sprintf("unexpected ast.Stmt: %T", stmt))
// }
package fillswitch
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