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add comment about tree traversal

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This commit is contained in:
Pat Moroney 2018-01-12 11:36:29 -07:00
parent 4f138c4f92
commit 100279cd16
1 changed files with 2 additions and 0 deletions
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2
helpers/helpers.go
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@ -136,6 +136,8 @@ func InitPathMaps(files []*descriptor.FileDescriptorProto) {
} }
} }
// addToPathMap traverses through the AST adding SourceCodeInfo_Location entries to the pathMap.
// Since the AST is a tree, the recursion finishes once it has gone through all the nodes.
func addToPathMap(info *descriptor.SourceCodeInfo, i interface{}, path []int32) { func addToPathMap(info *descriptor.SourceCodeInfo, i interface{}, path []int32) {
loc := findLoc(info, path) loc := findLoc(info, path)
if loc != nil { if loc != nil {