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39fa2f0228
Use the generic type lowering algorithm described in "docs/CallingConvention.rst#physical-lowering" to map from IRGen's explosion type to the type expected by the ABI. Change IRGen to use the swift calling convention (swiftcc) for native swift functions. Use the 'swiftself' attribute on self parameters and for closures contexts. Use the 'swifterror' parameter for swift error parameters. Change functions in the runtime that are called as native swift functions to use the swift calling convention. rdar://19978563
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
//===--- Reflection.h - Swift Language Reflection Support -------*- C++ -*-===//
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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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// An implementation of value reflection based on type metadata.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Runtime/Metadata.h"
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#include <cstdlib>
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namespace swift {
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struct MirrorWitnessTable;
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/// The layout of protocol<Mirror>.
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struct Mirror {
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OpaqueExistentialContainer Header;
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const MirrorWitnessTable *MirrorWitness;
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};
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// Swift assumes Mirror is returned in memory.
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// Use MirrorReturn to guarantee that even on architectures
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// where Mirror would be returned in registers.
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struct MirrorReturn {
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Mirror mirror;
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MirrorReturn(Mirror m) : mirror(m) { }
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operator Mirror() { return mirror; }
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~MirrorReturn() { }
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};
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// We intentionally use a non-POD return type with these entry points to give
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// them an indirect return ABI for compatibility with Swift.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wreturn-type-c-linkage"
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/// func reflect<T>(x: T) -> Mirror
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///
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/// Produce a mirror for any value. The runtime produces a mirror that
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/// structurally reflects values of any type.
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SWIFT_CC(swift)
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SWIFT_RUNTIME_EXPORT
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MirrorReturn
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swift_reflectAny(OpaqueValue *value, const Metadata *T);
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#pragma clang diagnostic pop
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}
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