#189 · Programming Language Tools Developer Tool

Swift Parser

Extract Swift declarations, attributes, protocol conformances, and source structure into tree and JSON views. Processing stays in your browser.

Developer Input

Swift source

Swift Source Code

import Foundation
import SwiftUI

@MainActor
final class UserViewModel: ObservableObject {
    @Published var users: [User] = []

    func loadUsers() async throws {
        users = try await UserService().fetchUsers()
    }
}

Parser Mode

Maximum Depth

levels

Include attributes Include conformances Include source locations Auto-run while typing

How to use this developer tool

Paste source code or load the included working example.
Choose the parser mode and adjust the additional setting.
Enable only the checks or output options needed for this review.
Select Parse 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 Parser. 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 parse Swift structs and classes online?

Paste Swift source and run the parser to extract types, functions, properties, attributes, conformances, and source ranges.

Can this Swift parser detect actors and extensions?

Yes. Actor and extension declarations are included in the structure output.

How do I extract Swift property wrappers from source code?

The parser recognizes common attributes such as @Published, @State, @Binding, and user-defined attributes.

Can I export the parsed Swift structure as JSON?

Yes. Use the JSON output mode or download the parser result as a JSON file.

Is this the same as the SwiftSyntax parser?

No. It is a browser-based lightweight parser and does not provide the complete SwiftSyntax syntax tree.

Related developer tools

TypeScript Checker TypeScript Generator TypeScript Formatter TypeScript Converter

Swift Parser modules

Module	Purpose
Declarations	Extracts Swift types and members.
Attributes	Finds Swift attributes and wrappers.
Conformance	Reads protocol conformance clauses.

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