1 // Copyright 2019 CUE Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package ast 16 17 // Comments returns all comments associated with a given node. 18 func Comments(n Node) []*CommentGroup { 19 c := n.commentInfo() 20 if c == nil { 21 return nil 22 } 23 return c.Comments() 24 } 25 26 // AddComment adds the given comment to the node if it supports it. 27 // If a node does not support comments, such as for CommentGroup or Comment, 28 // this call has no effect. 29 func AddComment(n Node, cg *CommentGroup) { 30 c := n.commentInfo() 31 if c == nil { 32 return 33 } 34 c.AddComment(cg) 35 } 36 37 // SetComments replaces all comments of n with the given set of comments. 38 // If a node does not support comments, such as for CommentGroup or Comment, 39 // this call has no effect. 40 func SetComments(n Node, cgs []*CommentGroup) { 41 c := n.commentInfo() 42 if c == nil { 43 return 44 } 45 c.SetComments(cgs) 46 } 47