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42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
//===--- ErrorDefaultImpls.cpp - Error default implementations ------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This implements helpers for the default implementations of Error protocol
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// members.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Runtime/Config.h"
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#include "swift/Runtime/Metadata.h"
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using namespace swift;
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// @_silgen_name("_swift_stdlib_getDefaultErrorCode")
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// func _getDefaultErrorCode<T : Error>(_ x: T) -> Int
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SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_SPI
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intptr_t _swift_stdlib_getDefaultErrorCode(OpaqueValue *error,
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const Metadata *T,
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const WitnessTable *Error) {
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intptr_t result;
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switch (T->getKind()) {
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case MetadataKind::Enum:
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result = T->vw_getEnumTag(error);
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break;
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default:
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result = 1;
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break;
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}
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return result;
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}
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