//===----------------------------------------------------------------------===//
// Copyright © 2025 Apple Inc. and the container project authors. 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
//
//   https://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 ContainerBuildIR

struct ArgDefinition: Equatable {
    let name: String
    let defaultValue: String?
}

struct ArgInstruction: DockerInstruction {
    let args: [ArgDefinition]

    init(args: [ArgDefinition]) throws {
        guard !args.isEmpty else {
            throw ParseError.missingRequiredField("name")
        }
        guard args.allSatisfy({ !$0.name.isEmpty }) else {
            throw ParseError.missingRequiredField("name")
        }
        self.args = args
    }

    func accept(_ visitor: DockerInstructionVisitor) throws {
        try visitor.visit(self)
    }
}