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Improve string quote performance #1132

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Merged
merged 1 commit into from
Jun 16, 2022
Merged

Improve string quote performance #1132

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13 changes: 9 additions & 4 deletions Sources/SQLite/Helpers.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -54,12 +54,17 @@ extension Optional: _OptionalType {
let SQLITE_TRANSIENT = unsafeBitCast(-1, to: sqlite3_destructor_type.self)

extension String {

func quote(_ mark: Character = "\"") -> String {
let escaped = reduce("") { string, character in
string + (character == mark ? "\(mark)\(mark)" : "\(character)")
var quoted = ""
quoted.append(mark)
for character in self {
quoted.append(character)
if character == mark {
quoted.append(character)
}
}
return "\(mark)\(escaped)\(mark)"
quoted.append(mark)
return quoted
}

func join(_ expressions: [Expressible]) -> Expressible {
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