UTM/Configuration/QEMUArgumentBuilder.swift

93 lines
2.9 KiB
Swift

//
// Copyright © 2022 osy. All rights reserved.
//
// 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
@resultBuilder
struct QEMUArgumentBuilder {
static func buildBlock(_ components: [QEMUArgumentFragment]...) -> [QEMUArgumentFragment] {
let merged = components.flatMap { $0 }
var combined: [QEMUArgumentFragment] = []
var current = QEMUArgumentFragment()
for fragment in merged {
current.merge(fragment)
if current.isFinal {
combined.append(current)
current = QEMUArgumentFragment()
}
}
if !current.string.isEmpty {
combined.append(current)
}
return combined
}
static func buildExpression(_ fragment: QEMUArgumentFragment) -> [QEMUArgumentFragment] {
[fragment]
}
static func buildExpression(_ fragments: [QEMUArgumentFragment]) -> [QEMUArgumentFragment] {
fragments
}
static func buildExpression(_ arguments: [QEMUArgument]) -> [QEMUArgumentFragment] {
arguments.map { QEMUArgumentFragment(from: $0) }
}
static func buildExpression(_ string: String) -> [QEMUArgumentFragment] {
[.init(string)]
}
static func buildExpression(_ constant: any QEMUConstant) -> [QEMUArgumentFragment] {
[.init(constant.rawValue)]
}
static func buildExpression(_ assignment: ()) -> [QEMUArgumentFragment] {
[]
}
static func buildExpression(_ url: URL) -> [QEMUArgumentFragment] {
var arg = QEMUArgumentFragment(url.path)
arg.fileUrls = [url]
arg.seperator = ""
return [arg]
}
static func buildExpression<I: FixedWidthInteger>(_ int: I) -> [QEMUArgumentFragment] {
[.init("\(int)")]
}
static func buildEither(first component: [QEMUArgumentFragment]) -> [QEMUArgumentFragment] {
component
}
static func buildEither(second component: [QEMUArgumentFragment]) -> [QEMUArgumentFragment] {
component
}
static func buildArray(_ components: [[QEMUArgumentFragment]]) -> [QEMUArgumentFragment] {
components.flatMap { $0 }
}
static func buildOptional(_ component: [QEMUArgumentFragment]?) -> [QEMUArgumentFragment] {
component ?? []
}
static func buildFinalResult(_ component: [QEMUArgumentFragment]) -> [QEMUArgument] {
component.map { QEMUArgument(from: $0) }
}
}