github.com/cockroachdb/cockroachdb-parser@v0.23.3-0.20240213214944-911057d40c9a/pkg/sql/sem/tree/unlisten.go (about)

     1  // Copyright 2022 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package tree
    12  
    13  // Unlisten represents a UNLISTEN statement.
    14  type Unlisten struct {
    15  	ChannelName *UnresolvedObjectName
    16  	Star        bool
    17  }
    18  
    19  var _ Statement = &Unlisten{}
    20  
    21  // Format implements the NodeFormatter interface.
    22  func (node *Unlisten) Format(ctx *FmtCtx) {
    23  	ctx.WriteString("UNLISTEN ")
    24  	if node.Star {
    25  		ctx.WriteString("* ")
    26  	} else if node.ChannelName != nil {
    27  		ctx.FormatNode(node.ChannelName)
    28  	}
    29  }
    30  
    31  // String implements the Statement interface.
    32  func (node *Unlisten) String() string {
    33  	return AsString(node)
    34  }