| //===--- ErrorDefaultImpls.cpp - Error default implementations ------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This implements helpers for the default implementations of Error protocol |
| // members. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "swift/Runtime/Config.h" |
| #include "swift/Runtime/Metadata.h" |
| using namespace swift; |
| |
| // @_silgen_name("_swift_stdlib_getDefaultErrorCode") |
| // func _getDefaultErrorCode<T : Error>(_ x: T) -> Int |
| SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_SPI |
| intptr_t _swift_stdlib_getDefaultErrorCode(OpaqueValue *error, |
| const Metadata *T, |
| const WitnessTable *Error) { |
| intptr_t result; |
| |
| switch (T->getKind()) { |
| case MetadataKind::Enum: |
| result = T->vw_getEnumTag(error); |
| break; |
| |
| default: |
| result = 1; |
| break; |
| } |
| |
| return result; |
| } |