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| 1 | +//===----------------------------------------------------------------------===// |
| 2 | +// |
| 3 | +// This source file is part of the Swift.org open source project |
| 4 | +// |
| 5 | +// Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors |
| 6 | +// Licensed under Apache License v2.0 with Runtime Library Exception |
| 7 | +// |
| 8 | +// See https://swift.org/LICENSE.txt for license information |
| 9 | +// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| 10 | +// |
| 11 | +//===----------------------------------------------------------------------===// |
| 12 | + |
| 13 | +#include "swift/Demangling/Demangle.h" |
| 14 | +#include "swift/Demangling/Demangler.h" |
| 15 | +#include "swift/Strings.h" |
| 16 | +#include "llvm/ADT/StringRef.h" |
| 17 | + |
| 18 | +#include "gtest/gtest.h" |
| 19 | + |
| 20 | +/// Helper class to conveniently construct demangle tree hierarchies. |
| 21 | +class NodeBuilder { |
| 22 | + using NodePointer = swift::Demangle::NodePointer; |
| 23 | + using Kind = swift::Demangle::Node::Kind; |
| 24 | + |
| 25 | + swift::Demangle::Demangler &m_dem; |
| 26 | + |
| 27 | +public: |
| 28 | + NodeBuilder(swift::Demangle::Demangler &dem) : m_dem(dem) { |
| 29 | +#ifndef NDEBUG |
| 30 | + m_dem.disableAssertionsForUnitTest = true; |
| 31 | +#endif |
| 32 | + } |
| 33 | + NodePointer Node(Kind kind, StringRef text) { |
| 34 | + return m_dem.createNode(kind, text); |
| 35 | + } |
| 36 | + NodePointer NodeWithIndex(Kind kind, swift::Demangle::Node::IndexType index) { |
| 37 | + return m_dem.createNode(kind, index); |
| 38 | + } |
| 39 | + NodePointer Node(Kind kind, NodePointer child0 = nullptr, |
| 40 | + NodePointer child1 = nullptr, |
| 41 | + NodePointer child2 = nullptr, |
| 42 | + NodePointer child3 = nullptr) { |
| 43 | + NodePointer node = m_dem.createNode(kind); |
| 44 | + |
| 45 | + if (child0) |
| 46 | + node->addChild(child0, m_dem); |
| 47 | + if (child1) |
| 48 | + node->addChild(child1, m_dem); |
| 49 | + if (child2) |
| 50 | + node->addChild(child2, m_dem); |
| 51 | + if (child3) |
| 52 | + node->addChild(child3, m_dem); |
| 53 | + return node; |
| 54 | + } |
| 55 | + NodePointer IntType() { |
| 56 | + return Node(Node::Kind::Type, |
| 57 | + Node(Node::Kind::Structure, |
| 58 | + Node(Node::Kind::Module, swift::STDLIB_NAME), |
| 59 | + Node(Node::Kind::Identifier, "Int"))); |
| 60 | + } |
| 61 | + NodePointer GlobalTypeMangling(NodePointer type) { |
| 62 | + assert(type && type->getKind() == Node::Kind::Type); |
| 63 | + return Node(Node::Kind::Global, Node(Node::Kind::TypeMangling, type)); |
| 64 | + } |
| 65 | + NodePointer GlobalType(NodePointer type) { |
| 66 | + assert(type && type->getKind() != Node::Kind::Type && |
| 67 | + type->getKind() != Node::Kind::TypeMangling && |
| 68 | + type->getKind() != Node::Kind::Global); |
| 69 | + return GlobalTypeMangling(Node(Node::Kind::Type, type)); |
| 70 | + } |
| 71 | + |
| 72 | + ManglingErrorOr<StringRef> remangle(NodePointer node) { |
| 73 | + return mangleNode( |
| 74 | + node, |
| 75 | + [](SymbolicReferenceKind, const void *) -> NodePointer { |
| 76 | + return nullptr; |
| 77 | + }, |
| 78 | + m_dem); |
| 79 | + } |
| 80 | + std::string remangleResult(NodePointer node) { |
| 81 | + return remangle(node).result().str(); |
| 82 | + } |
| 83 | + bool remangleSuccess(NodePointer node) { |
| 84 | + return remangle(node).isSuccess(); |
| 85 | + } |
| 86 | +}; |
| 87 | + |
| 88 | +TEST(TestSwiftRemangler, DependentGenericConformanceRequirement) { |
| 89 | + using namespace swift::Demangle; |
| 90 | + using Kind = swift::Demangle::Node::Kind; |
| 91 | + Demangler dem; |
| 92 | + NodeBuilder b(dem); |
| 93 | + { |
| 94 | + // Well-formed. |
| 95 | + NodePointer n = b.GlobalType(b.Node( |
| 96 | + Kind::DependentGenericType, |
| 97 | + b.Node(Kind::DependentGenericType, |
| 98 | + b.Node(Kind::DependentGenericSignature, |
| 99 | + b.NodeWithIndex(Kind::DependentGenericParamCount, 1), |
| 100 | + b.Node(Kind::DependentGenericConformanceRequirement, |
| 101 | + b.Node(Kind::Type, |
| 102 | + b.Node(Kind::DependentGenericParamType, |
| 103 | + b.NodeWithIndex(Kind::Index, 0), |
| 104 | + b.NodeWithIndex(Kind::Index, 0))), |
| 105 | + b.Node(Kind::Type, |
| 106 | + b.Node(Kind::Protocol, |
| 107 | + b.Node(Kind::Module, "M"), |
| 108 | + b.Node(Kind::Identifier, "B"))))), |
| 109 | + b.IntType()))); |
| 110 | + ASSERT_EQ(b.remangleResult(n), "$sSi1M1BRzluuD"); |
| 111 | + } |
| 112 | + { |
| 113 | + // Malformed. |
| 114 | + NodePointer n = b.GlobalType(b.Node( |
| 115 | + Kind::DependentGenericType, |
| 116 | + b.Node(Kind::DependentGenericType, |
| 117 | + b.Node(Kind::DependentGenericSignature, |
| 118 | + b.NodeWithIndex(Kind::DependentGenericParamCount, 1), |
| 119 | + b.Node(Kind::DependentGenericConformanceRequirement, |
| 120 | + b.Node(Kind::Type, |
| 121 | + b.Node(Kind::DependentGenericParamType, |
| 122 | + b.NodeWithIndex(Kind::Index, 0), |
| 123 | + b.NodeWithIndex(Kind::Index, 0))))), |
| 124 | + b.IntType()))); |
| 125 | + ASSERT_FALSE(b.remangleSuccess(n)); |
| 126 | + } |
| 127 | +} |
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