1 //===- unittests/Basic/LexerTest.cpp ------ Lexer 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 #include "clang/Basic/SourceManager.h" 11 #include "clang/Basic/FileManager.h" 12 #include "clang/Basic/Diagnostic.h" 13 #include "clang/Basic/LangOptions.h" 14 #include "clang/Basic/TargetOptions.h" 15 #include "clang/Basic/TargetInfo.h" 16 #include "clang/Lex/ModuleLoader.h" 17 #include "clang/Lex/HeaderSearch.h" 18 #include "clang/Lex/Preprocessor.h" 19 #include "llvm/Config/config.h" 20 21 #include "gtest/gtest.h" 22 23 using namespace llvm; 24 using namespace clang; 25 26 namespace { 27 28 // The test fixture. 29 class LexerTest : public ::testing::Test { 30 protected: 31 LexerTest() 32 : FileMgr(FileMgrOpts), 33 DiagID(new DiagnosticIDs()), 34 Diags(DiagID, new IgnoringDiagConsumer()), 35 SourceMgr(Diags, FileMgr) { 36 TargetOpts.Triple = "x86_64-apple-darwin11.1.0"; 37 Target = TargetInfo::CreateTargetInfo(Diags, TargetOpts); 38 } 39 40 FileSystemOptions FileMgrOpts; 41 FileManager FileMgr; 42 llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID; 43 DiagnosticsEngine Diags; 44 SourceManager SourceMgr; 45 LangOptions LangOpts; 46 TargetOptions TargetOpts; 47 llvm::IntrusiveRefCntPtr<TargetInfo> Target; 48 }; 49 50 class VoidModuleLoader : public ModuleLoader { 51 virtual Module *loadModule(SourceLocation ImportLoc, ModuleIdPath Path, 52 Module::NameVisibilityKind Visibility, 53 bool IsInclusionDirective) { 54 return 0; 55 } 56 }; 57 58 TEST_F(LexerTest, LexAPI) { 59 const char *source = 60 "#define M(x) [x]\n" 61 "#define N(x) x\n" 62 "M(foo) N([bar])"; 63 MemoryBuffer *buf = MemoryBuffer::getMemBuffer(source); 64 SourceMgr.createMainFileIDForMemBuffer(buf); 65 66 VoidModuleLoader ModLoader; 67 HeaderSearch HeaderInfo(FileMgr, Diags, LangOpts); 68 Preprocessor PP(Diags, LangOpts, 69 Target.getPtr(), 70 SourceMgr, HeaderInfo, ModLoader, 71 /*IILookup =*/ 0, 72 /*OwnsHeaderSearch =*/false, 73 /*DelayInitialization =*/ false); 74 PP.EnterMainSourceFile(); 75 76 std::vector<Token> toks; 77 while (1) { 78 Token tok; 79 PP.Lex(tok); 80 if (tok.is(tok::eof)) 81 break; 82 toks.push_back(tok); 83 } 84 85 // Make sure we got the tokens that we expected. 86 ASSERT_EQ(6U, toks.size()); 87 ASSERT_EQ(tok::l_square, toks[0].getKind()); 88 ASSERT_EQ(tok::identifier, toks[1].getKind()); 89 ASSERT_EQ(tok::r_square, toks[2].getKind()); 90 ASSERT_EQ(tok::l_square, toks[3].getKind()); 91 ASSERT_EQ(tok::identifier, toks[4].getKind()); 92 ASSERT_EQ(tok::r_square, toks[5].getKind()); 93 94 SourceLocation lsqrLoc = toks[0].getLocation(); 95 SourceLocation idLoc = toks[1].getLocation(); 96 SourceLocation rsqrLoc = toks[2].getLocation(); 97 std::pair<SourceLocation,SourceLocation> 98 macroPair = SourceMgr.getExpansionRange(lsqrLoc); 99 SourceRange macroRange = SourceRange(macroPair.first, macroPair.second); 100 101 SourceLocation Loc; 102 EXPECT_TRUE(Lexer::isAtStartOfMacroExpansion(lsqrLoc, SourceMgr, LangOpts, &Loc)); 103 EXPECT_EQ(Loc, macroRange.getBegin()); 104 EXPECT_FALSE(Lexer::isAtStartOfMacroExpansion(idLoc, SourceMgr, LangOpts)); 105 EXPECT_FALSE(Lexer::isAtEndOfMacroExpansion(idLoc, SourceMgr, LangOpts)); 106 EXPECT_TRUE(Lexer::isAtEndOfMacroExpansion(rsqrLoc, SourceMgr, LangOpts, &Loc)); 107 EXPECT_EQ(Loc, macroRange.getEnd()); 108 109 CharSourceRange range = Lexer::makeFileCharRange(SourceRange(lsqrLoc, idLoc), 110 SourceMgr, LangOpts); 111 EXPECT_TRUE(range.isInvalid()); 112 range = Lexer::makeFileCharRange(SourceRange(idLoc, rsqrLoc), 113 SourceMgr, LangOpts); 114 EXPECT_TRUE(range.isInvalid()); 115 range = Lexer::makeFileCharRange(SourceRange(lsqrLoc, rsqrLoc), 116 SourceMgr, LangOpts); 117 EXPECT_TRUE(!range.isTokenRange()); 118 EXPECT_EQ(range.getAsRange(), 119 SourceRange(macroRange.getBegin(), 120 macroRange.getEnd().getLocWithOffset(1))); 121 122 StringRef text = Lexer::getSourceText( 123 CharSourceRange::getTokenRange(SourceRange(lsqrLoc, rsqrLoc)), 124 SourceMgr, LangOpts); 125 EXPECT_EQ(text, "M(foo)"); 126 127 SourceLocation macroLsqrLoc = toks[3].getLocation(); 128 SourceLocation macroIdLoc = toks[4].getLocation(); 129 SourceLocation macroRsqrLoc = toks[5].getLocation(); 130 SourceLocation fileLsqrLoc = SourceMgr.getSpellingLoc(macroLsqrLoc); 131 SourceLocation fileIdLoc = SourceMgr.getSpellingLoc(macroIdLoc); 132 SourceLocation fileRsqrLoc = SourceMgr.getSpellingLoc(macroRsqrLoc); 133 134 range = Lexer::makeFileCharRange(SourceRange(macroLsqrLoc, macroIdLoc), 135 SourceMgr, LangOpts); 136 EXPECT_EQ(SourceRange(fileLsqrLoc, fileIdLoc.getLocWithOffset(3)), 137 range.getAsRange()); 138 139 range = Lexer::makeFileCharRange(SourceRange(macroIdLoc, macroRsqrLoc), 140 SourceMgr, LangOpts); 141 EXPECT_EQ(SourceRange(fileIdLoc, fileRsqrLoc.getLocWithOffset(1)), 142 range.getAsRange()); 143 144 macroPair = SourceMgr.getExpansionRange(macroLsqrLoc); 145 range = Lexer::makeFileCharRange(SourceRange(macroLsqrLoc, macroRsqrLoc), 146 SourceMgr, LangOpts); 147 EXPECT_EQ(SourceRange(macroPair.first, macroPair.second.getLocWithOffset(1)), 148 range.getAsRange()); 149 150 text = Lexer::getSourceText( 151 CharSourceRange::getTokenRange(SourceRange(macroLsqrLoc, macroIdLoc)), 152 SourceMgr, LangOpts); 153 EXPECT_EQ(text, "[bar"); 154 } 155 156 } // anonymous namespace 157