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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Csourcekitd
import SourceKitD
#if canImport(Darwin)
import Darwin
#elseif canImport(Glibc)
import Glibc
#elseif canImport(Musl)
import Musl
#elseif canImport(CRT)
import CRT
#elseif canImport(Bionic)
import Bionic
#endif
/// Provide getters to get values of a sourcekitd request dictionary.
///
/// This is not part of the `SourceKitD` module because it uses `SourceKitD.servicePluginAPI` which must not be accessed
/// outside of the service plugin.
final class SKDRequestDictionaryReader: Sendable, CustomStringConvertible {
private nonisolated(unsafe) let dict: sourcekitd_api_object_t
let sourcekitd: SourceKitD
var description: String {
guard let description = sourcekitd.api.request_description_copy(dict) else {
return "getting request description failed"
}
defer { free(description) }
return String(cString: description)
}
/// Creates an `SKDRequestDictionary` that essentially provides a view into the given opaque
/// `sourcekitd_api_object_t`.
init?(_ request: sourcekitd_api_object_t, sourcekitd: SourceKitD) {
guard sourcekitd.servicePluginApi.request_get_type(request) == SOURCEKITD_API_VARIANT_TYPE_DICTIONARY else {
return nil
}
self.dict = request
self.sourcekitd = sourcekitd
_ = sourcekitd.api.request_retain(dict)
}
deinit {
_ = sourcekitd.api.request_release(dict)
}
private func getVariant<T>(
_ key: sourcekitd_api_uid_t,
_ variantType: sourcekitd_api_variant_type_t,
_ retrievalFunction: (sourcekitd_api_object_t) -> T?
) -> T? {
guard let value = sourcekitd.servicePluginApi.request_dictionary_get_value(sourcekitd_api_object_t(dict), key)
else {
return nil
}
if sourcekitd.servicePluginApi.request_get_type(value) == variantType {
return retrievalFunction(value)
} else {
return nil
}
}
subscript(key: sourcekitd_api_uid_t) -> String? {
return sourcekitd.servicePluginApi.request_dictionary_get_string(sourcekitd_api_object_t(dict), key).map(
String.init(cString:)
)
}
subscript(key: sourcekitd_api_uid_t) -> Int64? {
return getVariant(key, SOURCEKITD_API_VARIANT_TYPE_INT64, sourcekitd.servicePluginApi.request_int64_get_value)
}
subscript(key: sourcekitd_api_uid_t) -> Int? {
guard let value: Int64 = self[key] else {
return nil
}
return Int(value)
}
subscript(key: sourcekitd_api_uid_t) -> Bool? {
return getVariant(key, SOURCEKITD_API_VARIANT_TYPE_BOOL, sourcekitd.servicePluginApi.request_bool_get_value)
}
subscript(key: sourcekitd_api_uid_t) -> sourcekitd_api_uid_t? {
return sourcekitd.servicePluginApi.request_dictionary_get_uid(sourcekitd_api_object_t(dict), key)
}
subscript(key: sourcekitd_api_uid_t) -> SKDRequestArrayReader? {
return getVariant(key, SOURCEKITD_API_VARIANT_TYPE_ARRAY) {
SKDRequestArrayReader($0, sourcekitd: sourcekitd)
}
}
subscript(key: sourcekitd_api_uid_t) -> SKDRequestDictionaryReader? {
return getVariant(key, SOURCEKITD_API_VARIANT_TYPE_DICTIONARY) {
SKDRequestDictionaryReader($0, sourcekitd: sourcekitd)
}
}
}
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