perf: make initializing Str from empty string literal as fast as empt…

…y array literal
kkebo · Jun 30, 2024 · d3ab446 · d3ab446
1 parent 56f9667
commit d3ab446
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/Sources/Tokenizer/Str.swift b/Sources/Tokenizer/Str.swift
@@ -4,6 +4,10 @@ public typealias Char = Unicode.Scalar
 
 extension Str: @retroactive ExpressibleByStringLiteral {
     @inlinable public init(stringLiteral value: consuming String) {
+        guard !value.isEmpty else {
+            self = []
+            return
+        }
         self.init(value.unicodeScalars)
     }
 }