101 lines
3.0 KiB
Swift
101 lines
3.0 KiB
Swift
// Copyright 2020 Carton contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import CartonHelpers
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#if canImport(Combine)
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import Combine
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#else
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import OpenCombine
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#endif
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import Foundation
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import TSCBasic
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import WasmTransformer
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public final class Builder {
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public enum Environment {
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case other
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case browser
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}
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public let mainWasmPath: AbsolutePath
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private var currentProcess: ProcessRunner?
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private let arguments: [String]
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private let environment: Environment
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private let terminal: InteractiveWriter
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private let fileSystem: FileSystem
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private var subscription: AnyCancellable?
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public init(
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arguments: [String],
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mainWasmPath: AbsolutePath,
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environment: Environment = .browser,
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_ fileSystem: FileSystem,
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_ terminal: InteractiveWriter
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) {
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self.arguments = arguments
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self.mainWasmPath = mainWasmPath
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self.environment = environment
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self.terminal = terminal
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self.fileSystem = fileSystem
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}
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public func run() -> AnyPublisher<String, Error> {
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let buildStarted = Date()
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let process = ProcessRunner(arguments, loadingMessage: "Compiling...", terminal)
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currentProcess = process
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return process
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.publisher
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.handleEvents(receiveCompletion: { [weak self] in
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guard case .finished = $0, let self = self else { return }
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self.terminal.logLookup(
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"`swift build` completed in ",
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String(format: "%.2f seconds", abs(buildStarted.timeIntervalSinceNow))
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)
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guard self.environment == .browser else { return }
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// FIXME: errors from these `try` expressions should be recoverable, not sure how to
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// do that in `handleEvents`, and `flatMap` doesnt' fit here as we need to track
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// publisher completion.
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// swiftlint:disable force_try
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let binary = try! self.fileSystem.readFileContents(self.mainWasmPath)
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let loweringStarted = Date()
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let loweredBinary = try! lowerI64Imports(binary.contents)
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self.terminal.logLookup(
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"Binary transformation for Safari compatibility completed in ",
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String(format: "%.2f seconds", abs(loweringStarted.timeIntervalSinceNow))
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)
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try! self.fileSystem.writeFileContents(self.mainWasmPath, bytes: .init(loweredBinary))
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// swiftlint:enable force_try
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})
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.eraseToAnyPublisher()
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}
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public func runAndWaitUntilFinished() throws {
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try await { completion in
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subscription = run()
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.sink(
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receiveCompletion: { completion($0.result) },
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receiveValue: { _ in }
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)
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}
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}
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}
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