Conform Substring to RegexProtocol

rxwei · rxwei · commit 60303e1901b5 · 2022-02-10T01:34:54.000-08:00
diff --git a/Sources/_StringProcessing/RegexDSL/DSL.swift b/Sources/_StringProcessing/RegexDSL/DSL.swift
@@ -22,6 +22,15 @@ extension String: RegexProtocol {
   }
 }
 
+extension Substring: RegexProtocol {
+  public typealias Match = Substring
+
+  public var regex: Regex<Match> {
+    let atoms = self.map { atom(.char($0)) }
+    return .init(ast: concat(atoms))
+  }
+}
+
 extension Character: RegexProtocol {
   public typealias Match = Substring
 

Original file line number	Diff line number	Diff line change
`@@ -22,6 +22,15 @@ extension String: RegexProtocol {`
`22`	`22`	`}`
`23`	`23`	`}`
`24`	`24`
	`25`	`+extension Substring: RegexProtocol {`
	`26`	`+ public typealias Match = Substring`
	`27`	`+`
	`28`	`+ public var regex: Regex<Match> {`
	`29`	`+ let atoms = self.map { atom(.char($0)) }`
	`30`	`+ return .init(ast: concat(atoms))`
	`31`	`+ }`
	`32`	`+}`
	`33`	`+`
`25`	`34`	`extension Character: RegexProtocol {`
`26`	`35`	`public typealias Match = Substring`
`27`	`36`