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semantic/prototype/doubt-difftool/TSNode.swift
2015-10-29 14:58:07 -04:00

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// Copyright © 2015 GitHub. All rights reserved.
typealias TSDocument = COpaquePointer
typealias TSLanguage = COpaquePointer
extension TSNode {
func category(document: TSDocument) throws -> String {
guard let category = String.fromCString(ts_node_name(self, document)) else { throw "couldnt make a String from the node name" }
return category
}
var range: Range<Int> {
let start = ts_node_pos(self).chars
return start..<(start + ts_node_size(self).chars)
}
func substring(string: String) throws -> String {
guard let result = String(string.utf16[range]) else { throw "could not make a string from utf16 range '\(range)'" }
return result
}
var children: ChildrenCollection {
return ChildrenCollection(node: self, count: ts_node_child_count(self), child: ts_node_child)
}
var namedChildren: ChildrenCollection {
return ChildrenCollection(node: self, count: ts_node_named_child_count(self), child: ts_node_named_child)
}
struct ChildrenCollection: CollectionType {
let node: TSNode
let count: Int
let child: (TSNode, Int) -> TSNode
subscript (index: Int) -> TSNode {
return child(node, index)
}
let startIndex = 0
var endIndex: Int {
return count
}
}
}