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7a9a4dca83
Tested by manually running swift-reflection-test, no automated tests yet, but coming soon.
105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
//===--- ReflectionContext.h - Swift Type Reflection Context ----*- 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 - 2016 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 http://swift.org/LICENSE.txt for license information
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// See http://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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// Implements the context for reflection of values in the address space of a
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// remote process.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_REFLECTION_REFLECTIONCONTEXT_H
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#define SWIFT_REFLECTION_REFLECTIONCONTEXT_H
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#include "swift/Remote/MemoryReader.h"
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#include "swift/Remote/MetadataReader.h"
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#include "swift/Reflection/Records.h"
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#include "swift/Reflection/TypeLowering.h"
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#include "swift/Reflection/TypeRef.h"
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#include "swift/Reflection/TypeRefBuilder.h"
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#include <iostream>
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#include <vector>
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#include <unordered_map>
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namespace swift {
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namespace reflection {
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using swift::remote::MemoryReader;
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using swift::remote::RemoteAddress;
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template <typename Runtime>
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class ReflectionContext
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: public remote::MetadataReader<Runtime, TypeRefBuilder> {
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using super = remote::MetadataReader<Runtime, TypeRefBuilder>;
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public:
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using super::getBuilder;
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using super::readTypeFromMetadata;
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using typename super::StoredPointer;
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public:
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explicit ReflectionContext(std::shared_ptr<MemoryReader> reader)
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: super(std::move(reader)) {}
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ReflectionContext(const ReflectionContext &other) = delete;
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ReflectionContext &operator=(const ReflectionContext &other) = delete;
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MemoryReader &getReader() {
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return *this->Reader;
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}
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void dumpAllSections(std::ostream &OS) {
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getBuilder().dumpAllSections();
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}
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void addReflectionInfo(ReflectionInfo I) {
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getBuilder().addReflectionInfo(I);
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}
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/// Return a description of the layout of a heap object having the given
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/// metadata as its isa pointer.
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const TypeInfo *getInstanceTypeInfo(StoredPointer MetadataAddress) {
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// FIXME: Add caching
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auto &TC = getBuilder().getTypeConverter();
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auto TR = readTypeFromMetadata(MetadataAddress);
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if (TR == nullptr)
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return nullptr;
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auto kind = this->readKindFromMetadata(MetadataAddress);
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if (!kind.first)
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return nullptr;
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switch (kind.second) {
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case MetadataKind::Class: {
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auto start = this->readInstanceStartFromClassMetadata(MetadataAddress);
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if (!start.first)
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return nullptr;
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auto *TI = TC.getInstanceTypeInfo(TR, start.second);
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return TI;
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}
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default:
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return nullptr;
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}
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}
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/// Return a description of the layout of a value with the given type.
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const TypeInfo *getTypeInfo(const TypeRef *TR) {
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return getBuilder().getTypeConverter().getTypeInfo(TR);
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}
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};
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} // end namespace reflection
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} // end namespace swift
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#endif // SWIFT_REFLECTION_REFLECTIONCONTEXT_H
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