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[Runtime] Redo compatibility overrides boilerplate using a .def file.

Browse Source 
rdar://problem/36997475
This commit is contained in:
Mike Ash
2018-03-28 13:39:31 -04:00
parent a3a44a1529
commit f4224b092e
8 changed files with 234 additions and 503 deletions
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116
unittests/runtime/CompatibilityOverride.cpp
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@@ -22,119 +22,31 @@ using namespace swift;
bool EnableOverride;
bool Ran;
static const Metadata *
GetTypeByMangledNameOverrideFunc(const char *typeNameStart,
size_t typeNameLength,
size_t numberOfLevels,
size_t *parametersPerLevel,
const Metadata * const *flatSubstitutions,
GetTypeByMangledNameOriginal originalImpl) {
if (!EnableOverride)
return originalImpl(typeNameStart,
typeNameLength,
numberOfLevels,
parametersPerLevel,
flatSubstitutions);
Ran = true;
return nullptr;
}
static bool DynamicCastOverrideFunc(OpaqueValue *dest, OpaqueValue *src,
const Metadata *srcType,
const Metadata *targetType,
DynamicCastFlags flags,
DynamicCastOriginal originalImpl) {
if (!EnableOverride)
return originalImpl(dest, src, srcType, targetType, flags);
Ran = true;
return true;
}
#define CAST_FUNC(name, rettype, objtype, metatypetype) \
static const rettype *name ## OverrideFunc( \
const objtype *object, \
const metatypetype *targetType, \
name ## Original originalImpl) { \
if (!EnableOverride) \
return originalImpl(object, targetType); \
Ran = true; \
return nullptr; \
#define OVERRIDE(name, ret, attrs, namespace, typedArgs, namedArgs) \
static ret name ## Override(COMPATIBILITY_UNPAREN typedArgs, \
Original_ ## name originalImpl) { \
if (!EnableOverride) \
return originalImpl namedArgs; \
Ran = true; \
return nullptr; \
}
#include "../../stdlib/public/runtime/CompatibilityOverride.def"
#define CAST(name) CAST_FUNC(name, void, void, ClassMetadata)
#define FOREIGN_CAST(name) CAST_FUNC(name, void, void, ForeignClassMetadata)
#define CLASSMETATYPE_CAST(name) \
CAST_FUNC(name, ClassMetadata, ClassMetadata, ClassMetadata)
#define UNKNOWN_CAST(name) CAST_FUNC(name, void, void, Metadata)
#define METATYPE_CAST(name) CAST_FUNC(name, Metadata, Metadata, Metadata)
CAST(DynamicCastClass)
CAST(DynamicCastClassUnconditional)
CAST(DynamicCastObjCClass)
CAST(DynamicCastObjCClassUnconditional)
FOREIGN_CAST(DynamicCastForeignClass)
FOREIGN_CAST(DynamicCastForeignClassUnconditional)
UNKNOWN_CAST(DynamicCastUnknownClass)
UNKNOWN_CAST(DynamicCastUnknownClassUnconditional)
METATYPE_CAST(DynamicCastMetatype)
METATYPE_CAST(DynamicCastMetatypeUnconditional)
CLASSMETATYPE_CAST(DynamicCastObjCClassMetatype)
CLASSMETATYPE_CAST(DynamicCastObjCClassMetatypeUnconditional)
CLASSMETATYPE_CAST(DynamicCastForeignClassMetatype)
CLASSMETATYPE_CAST(DynamicCastForeignClassMetatypeUnconditional)
static const WitnessTable *
ConformsToProtocolOverrideFunc(const Metadata * const type,
const ProtocolDescriptor *protocol,
ConformsToProtocolOriginal originalImpl) {
if (!EnableOverride)
return originalImpl(type, protocol);
Ran = true;
return nullptr;
}
struct OverrideSection {
uintptr_t version;
#define FIELD(typename) typename typename ## Fptr
FIELD(GetTypeByMangledNameOverride);
FIELD(DynamicCastOverride);
FIELD(DynamicCastClassOverride);
FIELD(DynamicCastClassUnconditionalOverride);
FIELD(DynamicCastObjCClassOverride);
FIELD(DynamicCastObjCClassUnconditionalOverride);
FIELD(DynamicCastForeignClassOverride);
FIELD(DynamicCastForeignClassUnconditionalOverride);
FIELD(DynamicCastUnknownClassOverride);
FIELD(DynamicCastUnknownClassUnconditionalOverride);
FIELD(DynamicCastMetatypeOverride);
FIELD(DynamicCastMetatypeUnconditionalOverride);
FIELD(DynamicCastObjCClassMetatypeOverride);
FIELD(DynamicCastObjCClassMetatypeUnconditionalOverride);
FIELD(DynamicCastForeignClassMetatypeOverride);
FIELD(DynamicCastForeignClassMetatypeUnconditionalOverride);
FIELD(ConformsToProtocolOverride);
#define OVERRIDE(name, ret, attrs, namespace, typedArgs, namedArgs) \
Override_ ## name name;
#include "../../stdlib/public/runtime/CompatibilityOverride.def"
};
OverrideSection Overrides __attribute__((section("__DATA,__swift_lite"))) = {
0,
GetTypeByMangledNameOverrideFunc,
DynamicCastOverrideFunc,
DynamicCastClassOverrideFunc,
DynamicCastClassUnconditionalOverrideFunc,
DynamicCastObjCClassOverrideFunc,
DynamicCastObjCClassUnconditionalOverrideFunc,
DynamicCastForeignClassOverrideFunc,
DynamicCastForeignClassUnconditionalOverrideFunc,
DynamicCastUnknownClassOverrideFunc,
DynamicCastUnknownClassUnconditionalOverrideFunc,
DynamicCastMetatypeOverrideFunc,
DynamicCastMetatypeUnconditionalOverrideFunc,
DynamicCastObjCClassMetatypeOverrideFunc,
DynamicCastObjCClassMetatypeUnconditionalOverrideFunc,
DynamicCastForeignClassMetatypeOverrideFunc,
DynamicCastForeignClassMetatypeUnconditionalOverrideFunc,
ConformsToProtocolOverrideFunc
#define OVERRIDE(name, ret, attrs, namespace, typedArgs, namedArgs) \
name ## Override,
#include "../../stdlib/public/runtime/CompatibilityOverride.def"
};
SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_INTERNAL