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6aab257c33
Take the existing CompatibilityOverride mechanism and generalize it so it can be used in both the runtime and Concurrency libraries. The mechanism is preprocessor-heavy, so this requires some tricks. Use the SWIFT_TARGET_LIBRARY_NAME define to distinguish the libraries, and use a different .def file and mach-o section name accordingly. We want the global/main executor functions to be a little more flexible. Instead of using the override mechanism, we expose function pointers that can be set by the compatibility library, or by any other code that wants to use a custom implementation. rdar://73726764
229 lines
9.5 KiB
C++
229 lines
9.5 KiB
C++
//===--- CompatibilityOverridesRuntime.def - Overrides Database -*- 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 - 2018 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 file defines x-macros used for metaprogramming with the set of
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// compatibility override functions.
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//
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//===----------------------------------------------------------------------===//
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/// #define OVERRIDE(name, ret, attrs, ccAttrs, namespace, typedArgs, namedArgs)
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/// Provides information about an overridable function.
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/// - name is the name of the function, without any leading swift_ or
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/// namespace.
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/// - ret is the return type of the function.
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/// - attrs is the attributes, if any, applied to the function definition.
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/// - ccAttrs is the calling convention attributes, if any, applied to the
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/// function definition and corresponding typedefs
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/// - namespace is the namespace, if any, the function is in, including a
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/// trailing ::
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/// - typedArgs is the argument list, including types, surrounded by
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/// parentheses
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/// - namedArgs is the list of argument names, with no types, surrounded by
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/// parentheses
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///
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/// The entries are organized by group. A user may define OVERRIDE to get all
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/// entries, or define one or more of OVERRIDE_METADATALOOKUP, OVERRIDE_CASTING,
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/// OVERRIDE_OBJC, OVERRIDE_FOREIGN, OVERRIDE_PROTOCOLCONFORMANCE,
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/// and OVERRIDE_KEYPATH to get only those entries.
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// NOTE: this file is used to build the definition of OverrideSection in
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// CompatibilityOverride.cpp, which is part of the ABI. Moving or removing
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// entries in this file will break the ABI. Additional entries can be added to
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// the end. ABI breaks or version-specific changes can be accommodated by
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// changing the name of the override section in that file.
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#ifdef OVERRIDE
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# define OVERRIDE_METADATALOOKUP OVERRIDE
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# define OVERRIDE_CASTING OVERRIDE
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# define OVERRIDE_DYNAMICCASTING OVERRIDE
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# define OVERRIDE_OBJC OVERRIDE
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# define OVERRIDE_FOREIGN OVERRIDE
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# define OVERRIDE_PROTOCOLCONFORMANCE OVERRIDE
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# define OVERRIDE_KEYPATH OVERRIDE
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# define OVERRIDE_WITNESSTABLE OVERRIDE
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#else
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# ifndef OVERRIDE_METADATALOOKUP
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# define OVERRIDE_METADATALOOKUP(...)
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# endif
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# ifndef OVERRIDE_CASTING
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# define OVERRIDE_CASTING(...)
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# endif
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# ifndef OVERRIDE_DYNAMICCASTING
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# define OVERRIDE_DYNAMICCASTING(...)
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# endif
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# ifndef OVERRIDE_OBJC
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# define OVERRIDE_OBJC(...)
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# endif
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# ifndef OVERRIDE_FOREIGN
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# define OVERRIDE_FOREIGN(...)
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# endif
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# ifndef OVERRIDE_PROTOCOLCONFORMANCE
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# define OVERRIDE_PROTOCOLCONFORMANCE(...)
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# endif
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# ifndef OVERRIDE_KEYPATH
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# define OVERRIDE_KEYPATH(...)
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# endif
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# ifndef OVERRIDE_WITNESSTABLE
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# define OVERRIDE_WITNESSTABLE(...)
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# endif
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#endif
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OVERRIDE_DYNAMICCASTING(dynamicCast, bool, , , swift::,
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(OpaqueValue *dest, OpaqueValue *src,
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const Metadata *srcType,
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const Metadata *targetType,
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DynamicCastFlags flags),
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(dest, src, srcType, targetType, flags))
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OVERRIDE_CASTING(dynamicCastClass, const void *, , , swift::,
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(const void *object,
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const ClassMetadata *targetType),
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(object, targetType))
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OVERRIDE_CASTING(dynamicCastClassUnconditional, const void *, , , swift::,
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(const void *object,
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const ClassMetadata *targetType,
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const char *file, unsigned line, unsigned column),
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(object, targetType, file, line, column))
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OVERRIDE_CASTING(dynamicCastUnknownClass, const void *, , , swift::,
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(const void *object, const Metadata *targetType),
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(object, targetType))
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OVERRIDE_CASTING(dynamicCastUnknownClassUnconditional, const void *, , , swift::,
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(const void *object, const Metadata *targetType,
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const char *file, unsigned line, unsigned column),
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(object, targetType, file, line, column))
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OVERRIDE_CASTING(dynamicCastMetatype, const Metadata *, , , swift::,
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(const Metadata *sourceType,
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const Metadata *targetType),
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(sourceType, targetType))
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OVERRIDE_CASTING(dynamicCastMetatypeUnconditional, const Metadata *, , , swift::,
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(const Metadata *sourceType,
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const Metadata *targetType,
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const char *file, unsigned line, unsigned column),
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(sourceType, targetType, file, line, column))
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OVERRIDE_FOREIGN(dynamicCastForeignClassMetatype, const ClassMetadata *, , , swift::,
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(const ClassMetadata *sourceType,
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const ClassMetadata *targetType),
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(sourceType, targetType))
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OVERRIDE_FOREIGN(dynamicCastForeignClassMetatypeUnconditional,
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const ClassMetadata *, , , swift::,
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(const ClassMetadata *sourceType,
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const ClassMetadata *targetType,
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const char *file, unsigned line, unsigned column),
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(sourceType, targetType, file, line, column))
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OVERRIDE_PROTOCOLCONFORMANCE(conformsToProtocol, const WitnessTable *, , , swift::,
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(const Metadata * const type,
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const ProtocolDescriptor *protocol),
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(type, protocol))
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OVERRIDE_KEYPATH(getKeyPath, const HeapObject *, , , swift::,
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(const void *pattern, const void *arguments),
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(pattern, arguments))
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OVERRIDE_METADATALOOKUP(getTypeByMangledNode, TypeLookupErrorOr<TypeInfo>, , SWIFT_CC(swift), swift::,
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(MetadataRequest request,
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Demangler &demangler,
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Demangle::NodePointer node,
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const void * const *arguments,
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SubstGenericParameterFn substGenericParam,
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SubstDependentWitnessTableFn substWitnessTable),
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(request, demangler, node, arguments, substGenericParam, substWitnessTable))
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OVERRIDE_METADATALOOKUP(getTypeByMangledName, TypeLookupErrorOr<TypeInfo>, , SWIFT_CC(swift), swift::,
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(MetadataRequest request,
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StringRef typeName,
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const void * const *arguments,
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SubstGenericParameterFn substGenericParam,
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SubstDependentWitnessTableFn substWitnessTable),
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(request, typeName, arguments, substGenericParam, substWitnessTable))
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OVERRIDE_WITNESSTABLE(getAssociatedTypeWitnessSlow, MetadataResponse,
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SWIFT_RUNTIME_STDLIB_INTERNAL, SWIFT_CC(swift), swift::,
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(MetadataRequest request, WitnessTable *wtable,
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const Metadata *conformingType,
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const ProtocolRequirement *reqBase,
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const ProtocolRequirement *assocType),
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(request, wtable, conformingType, reqBase, assocType))
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OVERRIDE_WITNESSTABLE(getAssociatedConformanceWitnessSlow, const WitnessTable *,
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SWIFT_RUNTIME_STDLIB_INTERNAL, SWIFT_CC(swift), swift::,
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(WitnessTable *wtable, const Metadata *conformingType,
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const Metadata *assocType,
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const ProtocolRequirement *reqBase,
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const ProtocolRequirement *assocConformance),
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(wtable, conformingType, assocType, reqBase,
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assocConformance))
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#if SWIFT_OBJC_INTEROP
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OVERRIDE_OBJC(dynamicCastObjCClass, const void *, , , swift::,
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(const void *object,
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const ClassMetadata *targetType),
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(object, targetType))
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OVERRIDE_OBJC(dynamicCastObjCClassUnconditional, const void *, , , swift::,
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(const void *object,
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const ClassMetadata *targetType,
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const char *file, unsigned line, unsigned column),
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(object, targetType, file, line, column))
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OVERRIDE_OBJC(dynamicCastObjCClassMetatype, const ClassMetadata *, , , swift::,
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(const ClassMetadata *sourceType,
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const ClassMetadata *targetType),
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(sourceType, targetType))
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OVERRIDE_OBJC(dynamicCastObjCClassMetatypeUnconditional, const ClassMetadata *, , , swift::,
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(const ClassMetadata *sourceType, const ClassMetadata *targetType,
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const char *file, unsigned line, unsigned column),
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(sourceType, targetType, file, line, column))
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OVERRIDE_FOREIGN(dynamicCastForeignClass, const void *, , , swift::,
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(const void *object,
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const ForeignClassMetadata *targetType),
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(object, targetType))
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OVERRIDE_FOREIGN(dynamicCastForeignClassUnconditional, const void *, , , swift::,
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(const void *object, const ForeignClassMetadata *targetType,
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const char *file, unsigned line, unsigned column),
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(object, targetType, file, line, column))
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#endif
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#undef OVERRIDE
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#undef OVERRIDE_METADATALOOKUP
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#undef OVERRIDE_CASTING
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#undef OVERRIDE_DYNAMICCASTING
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#undef OVERRIDE_OBJC
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#undef OVERRIDE_FOREIGN
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#undef OVERRIDE_PROTOCOLCONFORMANCE
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#undef OVERRIDE_KEYPATH
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#undef OVERRIDE_WITNESSTABLE
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