#188 · Programming Language Tools Developer Tool

Swift Converter

Preview and apply browser-based Swift code transformations with safety levels and diff output. Processing stays in your browser.

Developer Input

Swift source

Swift Source Code

final class UserService {
    var cachedUser: User?

    func currentName() -> String {
        let user = cachedUser!
        return user.name
    }
}

Conversion Type

Replacement Access

modifier

Safe conversions only Generate diff Preserve comments Auto-run while typing

How to use this developer tool

Paste source code or load the included working example.
Choose the conversion type and adjust the additional setting.
Enable only the checks or output options needed for this review.
Select Convert Swift and inspect the output, status, and measured processing time.
Copy or download the result after reviewing heuristic findings.

What this developer tool does

This tool performs browser-based structural and static analysis. It does not replace the official Kotlin or Swift compiler.

Source input → string and comment masking → token or rule analysis → structured output → statistics and recommendations.

Heuristic findings are labeled for review. Confirm production code with the official compiler, IDE, and project test suite.

Example

The loaded example is executable test input for the Swift Converter. Run the tool to see its expected output and status.

Tips for better output

Use complete declarations when possible so scope and block ranges can be estimated correctly.
Keep strings and comments intact; the analyzer masks them before structural processing.
Review every automatic conversion before replacing source in a production project.
Use the official compiler for final syntax, type, dependency, and platform validation.

FAQ

How can I convert a Swift force unwrap to a guard statement?

Select Force Unwrap to Guard, review the detected candidates, and apply the generated replacement carefully.

Can this tool convert Swift var declarations to let?

It finds simple var declarations that appear unchanged and marks them as candidates for conversion.

How do I preview Swift code changes before applying them?

The converter generates a before-and-after diff and labels each transformation by safety level.

Can I convert completion handlers to async await online?

The tool can generate a structural async/await candidate, but complex control flow still requires manual review.

Does Swift Converter automatically change every matching line?

No. Unsafe or ambiguous patterns are skipped or marked for review rather than applied blindly.

Related developer tools

TypeScript Checker TypeScript Generator TypeScript Formatter TypeScript Converter

Swift Converter modules

Module	Purpose
Conversion	Applies the selected transformation.
Diff	Shows removed and added lines.
Safety	Labels transformations that need review.

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