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| 1 | +//===- unittests/AST/NamedDeclPrinterTest.cpp --- NamedDecl printer tests -===// |
| 2 | +// |
| 3 | +// The LLVM Compiler Infrastructure |
| 4 | +// |
| 5 | +// This file is distributed under the University of Illinois Open Source |
| 6 | +// License. See LICENSE.TXT for details. |
| 7 | +// |
| 8 | +//===----------------------------------------------------------------------===// |
| 9 | +// |
| 10 | +// This file contains tests for NamedDecl::printQualifiedName(). |
| 11 | +// |
| 12 | +// These tests have a coding convention: |
| 13 | +// * declaration to be printed is named 'A' unless it should have some special |
| 14 | +// name (e.g., 'operator+'); |
| 15 | +// * additional helper declarations are 'Z', 'Y', 'X' and so on. |
| 16 | +// |
| 17 | +//===----------------------------------------------------------------------===// |
| 18 | + |
| 19 | +#include "clang/AST/ASTContext.h" |
| 20 | +#include "clang/ASTMatchers/ASTMatchFinder.h" |
| 21 | +#include "clang/Tooling/Tooling.h" |
| 22 | +#include "llvm/ADT/SmallString.h" |
| 23 | +#include "gtest/gtest.h" |
| 24 | + |
| 25 | +using namespace clang; |
| 26 | +using namespace ast_matchers; |
| 27 | +using namespace tooling; |
| 28 | + |
| 29 | +namespace { |
| 30 | + |
| 31 | +class PrintMatch : public MatchFinder::MatchCallback { |
| 32 | + SmallString<1024> Printed; |
| 33 | + unsigned NumFoundDecls; |
| 34 | + bool SuppressUnwrittenScope; |
| 35 | + |
| 36 | +public: |
| 37 | + explicit PrintMatch(bool suppressUnwrittenScope) |
| 38 | + : NumFoundDecls(0), SuppressUnwrittenScope(suppressUnwrittenScope) {} |
| 39 | + |
| 40 | + virtual void run(const MatchFinder::MatchResult &Result) { |
| 41 | + const NamedDecl *ND = Result.Nodes.getNodeAs<NamedDecl>("id"); |
| 42 | + if (!ND) |
| 43 | + return; |
| 44 | + NumFoundDecls++; |
| 45 | + if (NumFoundDecls > 1) |
| 46 | + return; |
| 47 | + |
| 48 | + llvm::raw_svector_ostream Out(Printed); |
| 49 | + PrintingPolicy Policy = Result.Context->getPrintingPolicy(); |
| 50 | + Policy.SuppressUnwrittenScope = SuppressUnwrittenScope; |
| 51 | + ND->printQualifiedName(Out, Policy); |
| 52 | + } |
| 53 | + |
| 54 | + StringRef getPrinted() const { |
| 55 | + return Printed; |
| 56 | + } |
| 57 | + |
| 58 | + unsigned getNumFoundDecls() const { |
| 59 | + return NumFoundDecls; |
| 60 | + } |
| 61 | +}; |
| 62 | + |
| 63 | +::testing::AssertionResult |
| 64 | +PrintedNamedDeclMatches(StringRef Code, const std::vector<std::string> &Args, |
| 65 | + bool SuppressUnwrittenScope, |
| 66 | + const DeclarationMatcher &NodeMatch, |
| 67 | + StringRef ExpectedPrinted, StringRef FileName) { |
| 68 | + PrintMatch Printer(SuppressUnwrittenScope); |
| 69 | + MatchFinder Finder; |
| 70 | + Finder.addMatcher(NodeMatch, &Printer); |
| 71 | + std::unique_ptr<FrontendActionFactory> Factory( |
| 72 | + newFrontendActionFactory(&Finder)); |
| 73 | + |
| 74 | + if (!runToolOnCodeWithArgs(Factory->create(), Code, Args, FileName)) |
| 75 | + return testing::AssertionFailure() |
| 76 | + << "Parsing error in \"" << Code.str() << "\""; |
| 77 | + |
| 78 | + if (Printer.getNumFoundDecls() == 0) |
| 79 | + return testing::AssertionFailure() |
| 80 | + << "Matcher didn't find any named declarations"; |
| 81 | + |
| 82 | + if (Printer.getNumFoundDecls() > 1) |
| 83 | + return testing::AssertionFailure() |
| 84 | + << "Matcher should match only one named declaration " |
| 85 | + "(found " << Printer.getNumFoundDecls() << ")"; |
| 86 | + |
| 87 | + if (Printer.getPrinted() != ExpectedPrinted) |
| 88 | + return ::testing::AssertionFailure() |
| 89 | + << "Expected \"" << ExpectedPrinted.str() << "\", " |
| 90 | + "got \"" << Printer.getPrinted().str() << "\""; |
| 91 | + |
| 92 | + return ::testing::AssertionSuccess(); |
| 93 | +} |
| 94 | + |
| 95 | +::testing::AssertionResult |
| 96 | +PrintedNamedDeclCXX98Matches(StringRef Code, StringRef DeclName, |
| 97 | + StringRef ExpectedPrinted) { |
| 98 | + std::vector<std::string> Args(1, "-std=c++98"); |
| 99 | + return PrintedNamedDeclMatches(Code, |
| 100 | + Args, |
| 101 | + /*SuppressUnwrittenScope*/ false, |
| 102 | + namedDecl(hasName(DeclName)).bind("id"), |
| 103 | + ExpectedPrinted, |
| 104 | + "input.cc"); |
| 105 | +} |
| 106 | + |
| 107 | +::testing::AssertionResult |
| 108 | +PrintedWrittenNamedDeclCXX11Matches(StringRef Code, StringRef DeclName, |
| 109 | + StringRef ExpectedPrinted) { |
| 110 | + std::vector<std::string> Args(1, "-std=c++11"); |
| 111 | + return PrintedNamedDeclMatches(Code, |
| 112 | + Args, |
| 113 | + /*SuppressUnwrittenScope*/ true, |
| 114 | + namedDecl(hasName(DeclName)).bind("id"), |
| 115 | + ExpectedPrinted, |
| 116 | + "input.cc"); |
| 117 | +} |
| 118 | + |
| 119 | +} // unnamed namespace |
| 120 | + |
| 121 | +TEST(NamedDeclPrinter, TestNamespace1) { |
| 122 | + ASSERT_TRUE(PrintedNamedDeclCXX98Matches( |
| 123 | + "namespace { int A; }", |
| 124 | + "A", |
| 125 | + "(anonymous namespace)::A")); |
| 126 | +} |
| 127 | + |
| 128 | +TEST(NamedDeclPrinter, TestNamespace2) { |
| 129 | + ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches( |
| 130 | + "inline namespace Z { namespace { int A; } }", |
| 131 | + "A", |
| 132 | + "A")); |
| 133 | +} |
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