SwiftFormat/Sources/Rules/SpaceInsideParens.swift

//
//  SpaceInsideParens.swift
//  SwiftFormat
//
//  Created by Nick Lockwood on 8/22/16.
//  Copyright © 2024 Nick Lockwood. All rights reserved.
//

import Foundation

public extension FormatRule {
    /// Remove space immediately inside parens
    static let spaceInsideParens = FormatRule(
        help: "Remove space inside parentheses."
    ) { formatter in
        formatter.forEach(.startOfScope("(")) { i, _ in
            if formatter.token(at: i + 1)?.isSpace == true,
               formatter.token(at: i + 2)?.isComment == false
            {
                formatter.removeToken(at: i + 1)
            }
        }
        formatter.forEach(.endOfScope(")")) { i, _ in
            if formatter.token(at: i - 1)?.isSpace == true,
               formatter.token(at: i - 2)?.isCommentOrLinebreak == false
            {
                formatter.removeToken(at: i - 1)
            }
        }
    } examples: {
        """
        ```diff
        - ( a, b)
        + (a, b)
        ```
        """
    }
}