1 //===- unittests/AST/StmtPrinterTest.cpp --- Statement 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 Stmt::printPretty() and related methods. 11 // 12 // Search this file for WRONG to see test cases that are producing something 13 // completely wrong, invalid C++ or just misleading. 14 // 15 // These tests have a coding convention: 16 // * statements to be printed should be contained within a function named 'A' 17 // unless it should have some special name (e.g., 'operator+'); 18 // * additional helper declarations are 'Z', 'Y', 'X' and so on. 19 // 20 //===----------------------------------------------------------------------===// 21 22 #include "clang/AST/ASTContext.h" 23 #include "clang/ASTMatchers/ASTMatchFinder.h" 24 #include "clang/Tooling/Tooling.h" 25 #include "llvm/ADT/SmallString.h" 26 #include "gtest/gtest.h" 27 28 using namespace clang; 29 using namespace ast_matchers; 30 using namespace tooling; 31 32 namespace { 33 34 void PrintStmt(raw_ostream &Out, const ASTContext *Context, const Stmt *S) { 35 PrintingPolicy Policy = Context->getPrintingPolicy(); 36 S->printPretty(Out, /*Helper*/ 0, Policy); 37 } 38 39 class PrintMatch : public MatchFinder::MatchCallback { 40 SmallString<1024> Printed; 41 unsigned NumFoundStmts; 42 43 public: 44 PrintMatch() : NumFoundStmts(0) {} 45 46 virtual void run(const MatchFinder::MatchResult &Result) { 47 const Stmt *S = Result.Nodes.getStmtAs<Stmt>("id"); 48 if (!S) 49 return; 50 NumFoundStmts++; 51 if (NumFoundStmts > 1) 52 return; 53 54 llvm::raw_svector_ostream Out(Printed); 55 PrintStmt(Out, Result.Context, S); 56 } 57 58 StringRef getPrinted() const { 59 return Printed; 60 } 61 62 unsigned getNumFoundStmts() const { 63 return NumFoundStmts; 64 } 65 }; 66 67 ::testing::AssertionResult PrintedStmtMatches( 68 StringRef Code, 69 const std::vector<std::string> &Args, 70 const DeclarationMatcher &NodeMatch, 71 StringRef ExpectedPrinted) { 72 73 PrintMatch Printer; 74 MatchFinder Finder; 75 Finder.addMatcher(NodeMatch, &Printer); 76 OwningPtr<FrontendActionFactory> Factory(newFrontendActionFactory(&Finder)); 77 78 if (!runToolOnCodeWithArgs(Factory->create(), Code, Args)) 79 return testing::AssertionFailure() << "Parsing error in \"" << Code << "\""; 80 81 if (Printer.getNumFoundStmts() == 0) 82 return testing::AssertionFailure() 83 << "Matcher didn't find any statements"; 84 85 if (Printer.getNumFoundStmts() > 1) 86 return testing::AssertionFailure() 87 << "Matcher should match only one statement " 88 "(found " << Printer.getNumFoundStmts() << ")"; 89 90 if (Printer.getPrinted() != ExpectedPrinted) 91 return ::testing::AssertionFailure() 92 << "Expected \"" << ExpectedPrinted << "\", " 93 "got \"" << Printer.getPrinted() << "\""; 94 95 return ::testing::AssertionSuccess(); 96 } 97 98 ::testing::AssertionResult PrintedStmtCXX98Matches( 99 StringRef Code, 100 StringRef ContainingFunction, 101 StringRef ExpectedPrinted) { 102 std::vector<std::string> Args; 103 Args.push_back("-std=c++98"); 104 Args.push_back("-Wno-unused-value"); 105 return PrintedStmtMatches(Code, 106 Args, 107 functionDecl(hasName(ContainingFunction), 108 has(compoundStmt(has(stmt().bind("id"))))), 109 ExpectedPrinted); 110 } 111 112 ::testing::AssertionResult PrintedStmtMSMatches( 113 StringRef Code, 114 StringRef ContainingFunction, 115 StringRef ExpectedPrinted) { 116 std::vector<std::string> Args; 117 Args.push_back("-std=c++98"); 118 Args.push_back("-fms-extensions"); 119 Args.push_back("-Wno-unused-value"); 120 return PrintedStmtMatches(Code, 121 Args, 122 functionDecl(hasName(ContainingFunction), 123 has(compoundStmt(has(stmt().bind("id"))))), 124 ExpectedPrinted); 125 } 126 127 } // unnamed namespace 128 129 TEST(StmtPrinter, TestIntegerLiteral) { 130 ASSERT_TRUE(PrintedStmtCXX98Matches( 131 "void A() {" 132 " 1, -1, 1U, 1u," 133 " 1L, 1l, -1L, 1UL, 1ul," 134 " 1LL, -1LL, 1ULL;" 135 "}", 136 "A", 137 "1 , -1 , 1U , 1U , " 138 "1L , 1L , -1L , 1UL , 1UL , " 139 "1LL , -1LL , 1ULL")); 140 // Should be: with semicolon 141 } 142 143 TEST(StmtPrinter, TestMSIntegerLiteral) { 144 ASSERT_TRUE(PrintedStmtMSMatches( 145 "void A() {" 146 " 1i8, -1i8, 1ui8, " 147 " 1i16, -1i16, 1ui16, " 148 " 1i32, -1i32, 1ui32, " 149 " 1i64, -1i64, 1ui64;" 150 "}", 151 "A", 152 "1 , -1 , 1U , " 153 "1 , -1 , 1U , " 154 "1L , -1L , 1UL , " 155 "1LL , -1LL , 1ULL")); 156 // Should be: with semicolon 157 } 158 159 TEST(StmtPrinter, TestFloatingPointLiteral) { 160 ASSERT_TRUE(PrintedStmtCXX98Matches( 161 "void A() { 1.0f, -1.0f, 1.0, -1.0, 1.0l, -1.0l; }", 162 "A", 163 "1.F , -1.F , 1. , -1. , 1.L , -1.L")); 164 // Should be: with semicolon 165 } 166
