no_case_declarations

var NoCaseDeclarationsRule = rule.Rule{
	Name: "no-case-declarations",
	Run: func(ctx rule.RuleContext, options any) rule.RuleListeners {
		checkClause := func(node *ast.Node) {
			clause := node.AsCaseOrDefaultClause()
			if clause == nil || clause.Statements == nil {
				return
			}

			for _, stmt := range clause.Statements.Nodes {
				if isLexicalDeclaration(stmt) {
					ctx.ReportNode(stmt, rule.RuleMessage{
						Id:          "unexpected",
						Description: "Unexpected lexical declaration in case clause.",
					})
				}
			}
		}

		return rule.RuleListeners{
			ast.KindCaseClause:    checkClause,
			ast.KindDefaultClause: checkClause,
		}
	},
}