Sources/SwiftCodeSanKit/Utils/Extensions/SyntaxParserExtensions.swift

//
//  Copyright (c) 2018. Uber Technologies
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//


import Foundation
import SwiftSyntax
import SwiftSyntaxParser

extension SyntaxParser {
    public static func parse(_ fileData: Data, path: String,
                             diagnosticHandler: ((Diagnostic) -> Void)? = nil) throws -> SourceFileSyntax {
        // Avoid using `String(contentsOf:)` because it creates a wrapped NSString.
        let source = fileData.withUnsafeBytes { buf in
            return String(decoding: buf.bindMemory(to: UInt8.self), as: UTF8.self)
        }
        return try parse(source: source, filenameForDiagnostics: path,
                         diagnosticHandler: diagnosticHandler)
    }

    public static func parse(_ path: String) throws -> SourceFileSyntax {
        guard let fileData = FileManager.default.contents(atPath: path) else {
            fatalError("Retrieving contents of \(path) failed")
        }
        return try parse(fileData, path: path)
    }
}