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llvm-project/clang/unittests/libclang/LibclangTest.cpp

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//===- unittests/libclang/LibclangTest.cpp --- libclang tests -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang-c/Index.h"
#include "clang-c/Rewrite.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
#include "TestUtils.h"
#include <fstream>
#include <functional>
#include <map>
#include <memory>
#include <set>
#define DEBUG_TYPE "libclang-test"
TEST(libclang, clang_parseTranslationUnit2_InvalidArgs) {
EXPECT_EQ(CXError_InvalidArguments,
clang_parseTranslationUnit2(nullptr, nullptr, nullptr, 0, nullptr,
0, 0, nullptr));
}
TEST(libclang, clang_createTranslationUnit_InvalidArgs) {
EXPECT_EQ(nullptr, clang_createTranslationUnit(nullptr, nullptr));
}
TEST(libclang, clang_createTranslationUnit2_InvalidArgs) {
EXPECT_EQ(CXError_InvalidArguments,
clang_createTranslationUnit2(nullptr, nullptr, nullptr));
CXTranslationUnit TU = reinterpret_cast<CXTranslationUnit>(1);
EXPECT_EQ(CXError_InvalidArguments,
clang_createTranslationUnit2(nullptr, nullptr, &TU));
EXPECT_EQ(nullptr, TU);
}
namespace {
struct TestVFO {
const char *Contents;
CXVirtualFileOverlay VFO;
TestVFO(const char *Contents) : Contents(Contents) {
VFO = clang_VirtualFileOverlay_create(0);
}
void map(const char *VPath, const char *RPath) {
CXErrorCode Err = clang_VirtualFileOverlay_addFileMapping(VFO, VPath, RPath);
EXPECT_EQ(Err, CXError_Success);
}
void mapError(const char *VPath, const char *RPath, CXErrorCode ExpErr) {
CXErrorCode Err = clang_VirtualFileOverlay_addFileMapping(VFO, VPath, RPath);
EXPECT_EQ(Err, ExpErr);
}
~TestVFO() {
if (Contents) {
char *BufPtr;
unsigned BufSize;
clang_VirtualFileOverlay_writeToBuffer(VFO, 0, &BufPtr, &BufSize);
std::string BufStr(BufPtr, BufSize);
EXPECT_STREQ(Contents, BufStr.c_str());
clang_free(BufPtr);
}
clang_VirtualFileOverlay_dispose(VFO);
}
};
}
TEST(libclang, VirtualFileOverlay_Basic) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/virtual\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo.h\",\n"
" 'external-contents': \"/real/foo.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/virtual/foo.h", "/real/foo.h");
}
TEST(libclang, VirtualFileOverlay_Unicode) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/\\u266B\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"\\u2602.h\",\n"
" 'external-contents': \"/real/\\u2602.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/♫/☂.h", "/real/☂.h");
}
TEST(libclang, VirtualFileOverlay_InvalidArgs) {
TestVFO T(nullptr);
T.mapError("/path/./virtual/../foo.h", "/real/foo.h",
CXError_InvalidArguments);
}
TEST(libclang, VirtualFileOverlay_RemapDirectories) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/another/dir\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo2.h\",\n"
" 'external-contents': \"/real/foo2.h\"\n"
" }\n"
" ]\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/virtual/dir\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo1.h\",\n"
" 'external-contents': \"/real/foo1.h\"\n"
" },\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo3.h\",\n"
" 'external-contents': \"/real/foo3.h\"\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"in/subdir\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo4.h\",\n"
" 'external-contents': \"/real/foo4.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/virtual/dir/foo1.h", "/real/foo1.h");
T.map("/another/dir/foo2.h", "/real/foo2.h");
T.map("/path/virtual/dir/foo3.h", "/real/foo3.h");
T.map("/path/virtual/dir/in/subdir/foo4.h", "/real/foo4.h");
}
TEST(libclang, VirtualFileOverlay_CaseInsensitive) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'case-sensitive': 'false',\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/virtual\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo.h\",\n"
" 'external-contents': \"/real/foo.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/virtual/foo.h", "/real/foo.h");
clang_VirtualFileOverlay_setCaseSensitivity(T.VFO, false);
}
TEST(libclang, VirtualFileOverlay_SharedPrefix) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/foo\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"bar\",\n"
" 'external-contents': \"/real/bar\"\n"
" },\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"bar.h\",\n"
" 'external-contents': \"/real/bar.h\"\n"
" }\n"
" ]\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/foobar\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"baz.h\",\n"
" 'external-contents': \"/real/baz.h\"\n"
" }\n"
" ]\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foobarbaz.h\",\n"
" 'external-contents': \"/real/foobarbaz.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/foo/bar.h", "/real/bar.h");
T.map("/path/foo/bar", "/real/bar");
T.map("/path/foobar/baz.h", "/real/baz.h");
T.map("/path/foobarbaz.h", "/real/foobarbaz.h");
}
TEST(libclang, VirtualFileOverlay_AdjacentDirectory) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/dir1\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo.h\",\n"
" 'external-contents': \"/real/foo.h\"\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"subdir\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"bar.h\",\n"
" 'external-contents': \"/real/bar.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
" },\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/path/dir2\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"baz.h\",\n"
" 'external-contents': \"/real/baz.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/path/dir1/foo.h", "/real/foo.h");
T.map("/path/dir1/subdir/bar.h", "/real/bar.h");
T.map("/path/dir2/baz.h", "/real/baz.h");
}
TEST(libclang, VirtualFileOverlay_TopLevel) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" {\n"
" 'type': 'directory',\n"
" 'name': \"/\",\n"
" 'contents': [\n"
" {\n"
" 'type': 'file',\n"
" 'name': \"foo.h\",\n"
" 'external-contents': \"/real/foo.h\"\n"
" }\n"
" ]\n"
" }\n"
" ]\n"
"}\n";
TestVFO T(contents);
T.map("/foo.h", "/real/foo.h");
}
TEST(libclang, VirtualFileOverlay_Empty) {
const char *contents =
"{\n"
" 'version': 0,\n"
" 'roots': [\n"
" ]\n"
"}\n";
TestVFO T(contents);
}
TEST(libclang, ModuleMapDescriptor) {
const char *Contents =
"framework module TestFrame {\n"
" umbrella header \"TestFrame.h\"\n"
"\n"
" export *\n"
" module * { export * }\n"
"}\n";
CXModuleMapDescriptor MMD = clang_ModuleMapDescriptor_create(0);
clang_ModuleMapDescriptor_setFrameworkModuleName(MMD, "TestFrame");
clang_ModuleMapDescriptor_setUmbrellaHeader(MMD, "TestFrame.h");
char *BufPtr;
unsigned BufSize;
clang_ModuleMapDescriptor_writeToBuffer(MMD, 0, &BufPtr, &BufSize);
std::string BufStr(BufPtr, BufSize);
EXPECT_STREQ(Contents, BufStr.c_str());
clang_free(BufPtr);
clang_ModuleMapDescriptor_dispose(MMD);
}
TEST_F(LibclangParseTest, AllSkippedRanges) {
std::string Header = "header.h", Main = "main.cpp";
WriteFile(Header,
"#ifdef MANGOS\n"
"printf(\"mmm\");\n"
"#endif");
WriteFile(Main,
"#include \"header.h\"\n"
"#ifdef KIWIS\n"
"printf(\"mmm!!\");\n"
"#endif");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0,
nullptr, 0, TUFlags);
CXSourceRangeList *Ranges = clang_getAllSkippedRanges(ClangTU);
EXPECT_EQ(2U, Ranges->count);
CXSourceLocation cxl;
unsigned line;
cxl = clang_getRangeStart(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(1U, line);
cxl = clang_getRangeEnd(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(3U, line);
cxl = clang_getRangeStart(Ranges->ranges[1]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(2U, line);
cxl = clang_getRangeEnd(Ranges->ranges[1]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(4U, line);
clang_disposeSourceRangeList(Ranges);
}
TEST_F(LibclangParseTest, EvaluateChildExpression) {
std::string Main = "main.m";
WriteFile(Main, "#define kFOO @\"foo\"\n"
"void foobar(void) {\n"
" {kFOO;}\n"
"}\n");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_FunctionDecl) {
int numberedStmt = 0;
clang_visitChildren(
cursor,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
int &numberedStmt = *((int *)client_data);
if (clang_getCursorKind(cursor) == CXCursor_CompoundStmt) {
if (numberedStmt) {
CXEvalResult RE = clang_Cursor_Evaluate(cursor);
EXPECT_NE(RE, nullptr);
EXPECT_EQ(clang_EvalResult_getKind(RE),
CXEval_ObjCStrLiteral);
clang_EvalResult_dispose(RE);
return CXChildVisit_Break;
}
numberedStmt++;
}
return CXChildVisit_Recurse;
},
&numberedStmt);
EXPECT_EQ(numberedStmt, 1);
}
return CXChildVisit_Continue;
},
nullptr);
}
class LibclangReparseTest : public LibclangParseTest {
public:
void DisplayDiagnostics() {
unsigned NumDiagnostics = clang_getNumDiagnostics(ClangTU);
for (unsigned i = 0; i < NumDiagnostics; ++i) {
auto Diag = clang_getDiagnostic(ClangTU, i);
LLVM_DEBUG(llvm::dbgs()
<< clang_getCString(clang_formatDiagnostic(
Diag, clang_defaultDiagnosticDisplayOptions()))
<< "\n");
clang_disposeDiagnostic(Diag);
}
}
bool ReparseTU(unsigned num_unsaved_files, CXUnsavedFile* unsaved_files) {
if (clang_reparseTranslationUnit(ClangTU, num_unsaved_files, unsaved_files,
clang_defaultReparseOptions(ClangTU))) {
LLVM_DEBUG(llvm::dbgs() << "Reparse failed\n");
return false;
}
DisplayDiagnostics();
return true;
}
};
TEST_F(LibclangReparseTest, FileName) {
std::string CppName = "main.cpp";
WriteFile(CppName, "int main() {}");
ClangTU = clang_parseTranslationUnit(Index, CppName.c_str(), nullptr, 0,
nullptr, 0, TUFlags);
CXFile cxf = clang_getFile(ClangTU, CppName.c_str());
CXString cxname = clang_getFileName(cxf);
ASSERT_STREQ(clang_getCString(cxname), CppName.c_str());
clang_disposeString(cxname);
cxname = clang_File_tryGetRealPathName(cxf);
ASSERT_TRUE(llvm::StringRef(clang_getCString(cxname)).endswith("main.cpp"));
clang_disposeString(cxname);
}
TEST_F(LibclangReparseTest, Reparse) {
const char *HeaderTop = "#ifndef H\n#define H\nstruct Foo { int bar;";
const char *HeaderBottom = "\n};\n#endif\n";
const char *CppFile = "#include \"HeaderFile.h\"\nint main() {"
" Foo foo; foo.bar = 7; foo.baz = 8; }\n";
std::string HeaderName = "HeaderFile.h";
std::string CppName = "CppFile.cpp";
WriteFile(CppName, CppFile);
WriteFile(HeaderName, std::string(HeaderTop) + HeaderBottom);
ClangTU = clang_parseTranslationUnit(Index, CppName.c_str(), nullptr, 0,
nullptr, 0, TUFlags);
EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
DisplayDiagnostics();
// Immedaitely reparse.
ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
std::string NewHeaderContents =
std::string(HeaderTop) + "int baz;" + HeaderBottom;
WriteFile(HeaderName, NewHeaderContents);
// Reparse after fix.
ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
EXPECT_EQ(0U, clang_getNumDiagnostics(ClangTU));
}
TEST_F(LibclangReparseTest, ReparseWithModule) {
const char *HeaderTop = "#ifndef H\n#define H\nstruct Foo { int bar;";
const char *HeaderBottom = "\n};\n#endif\n";
const char *MFile = "#include \"HeaderFile.h\"\nint main() {"
" struct Foo foo; foo.bar = 7; foo.baz = 8; }\n";
const char *ModFile = "module A { header \"HeaderFile.h\" }\n";
std::string HeaderName = "HeaderFile.h";
std::string MName = "MFile.m";
std::string ModName = "module.modulemap";
WriteFile(MName, MFile);
WriteFile(HeaderName, std::string(HeaderTop) + HeaderBottom);
WriteFile(ModName, ModFile);
std::string ModulesCache = std::string("-fmodules-cache-path=") + TestDir;
const char *Args[] = { "-fmodules", ModulesCache.c_str(),
"-I", TestDir.c_str() };
int NumArgs = sizeof(Args) / sizeof(Args[0]);
ClangTU = clang_parseTranslationUnit(Index, MName.c_str(), Args, NumArgs,
nullptr, 0, TUFlags);
EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
DisplayDiagnostics();
// Immedaitely reparse.
ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
std::string NewHeaderContents =
std::string(HeaderTop) + "int baz;" + HeaderBottom;
WriteFile(HeaderName, NewHeaderContents);
// Reparse after fix.
ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
EXPECT_EQ(0U, clang_getNumDiagnostics(ClangTU));
}
TEST_F(LibclangReparseTest, clang_parseTranslationUnit2FullArgv) {
// Provide a fake GCC 99.9.9 standard library that always overrides any local
// GCC installation.
std::string EmptyFiles[] = {"lib/gcc/arm-linux-gnueabi/99.9.9/crtbegin.o",
"include/arm-linux-gnueabi/.keep",
"include/c++/99.9.9/vector"};
for (auto &Name : EmptyFiles)
WriteFile(Name, "\n");
std::string Filename = "test.cc";
WriteFile(Filename, "#include <vector>\n");
std::string Clang = "bin/clang";
WriteFile(Clang, "");
const char *Argv[] = {Clang.c_str(), "-target", "arm-linux-gnueabi",
"-stdlib=libstdc++", "--gcc-toolchain="};
EXPECT_EQ(CXError_Success,
clang_parseTranslationUnit2FullArgv(Index, Filename.c_str(), Argv,
sizeof(Argv) / sizeof(Argv[0]),
nullptr, 0, TUFlags, &ClangTU));
EXPECT_EQ(0U, clang_getNumDiagnostics(ClangTU));
DisplayDiagnostics();
}
class LibclangPrintingPolicyTest : public LibclangParseTest {
public:
CXPrintingPolicy Policy = nullptr;
void SetUp() override {
LibclangParseTest::SetUp();
std::string File = "file.cpp";
WriteFile(File, "int i;\n");
ClangTU = clang_parseTranslationUnit(Index, File.c_str(), nullptr, 0,
nullptr, 0, TUFlags);
CXCursor TUCursor = clang_getTranslationUnitCursor(ClangTU);
Policy = clang_getCursorPrintingPolicy(TUCursor);
}
void TearDown() override {
clang_PrintingPolicy_dispose(Policy);
LibclangParseTest::TearDown();
}
};
TEST_F(LibclangPrintingPolicyTest, SetAndGetProperties) {
for (unsigned Value = 0; Value < 2; ++Value) {
for (int I = 0; I < CXPrintingPolicy_LastProperty; ++I) {
auto Property = static_cast<enum CXPrintingPolicyProperty>(I);
clang_PrintingPolicy_setProperty(Policy, Property, Value);
EXPECT_EQ(Value, clang_PrintingPolicy_getProperty(Policy, Property));
}
}
}
TEST_F(LibclangReparseTest, PreprocessorSkippedRanges) {
std::string Header = "header.h", Main = "main.cpp";
WriteFile(Header,
"#ifdef MANGOS\n"
"printf(\"mmm\");\n"
"#endif");
WriteFile(Main,
"#include \"header.h\"\n"
"#ifdef GUAVA\n"
"#endif\n"
"#ifdef KIWIS\n"
"printf(\"mmm!!\");\n"
"#endif");
for (int i = 0; i != 3; ++i) {
unsigned flags = TUFlags | CXTranslationUnit_PrecompiledPreamble;
if (i == 2)
flags |= CXTranslationUnit_CreatePreambleOnFirstParse;
if (i != 0)
clang_disposeTranslationUnit(ClangTU); // dispose from previous iter
// parse once
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0,
nullptr, 0, flags);
if (i != 0) {
// reparse
ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
}
// Check all ranges are there
CXSourceRangeList *Ranges = clang_getAllSkippedRanges(ClangTU);
EXPECT_EQ(3U, Ranges->count);
CXSourceLocation cxl;
unsigned line;
cxl = clang_getRangeStart(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(1U, line);
cxl = clang_getRangeEnd(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(3U, line);
cxl = clang_getRangeStart(Ranges->ranges[1]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(2U, line);
cxl = clang_getRangeEnd(Ranges->ranges[1]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(3U, line);
cxl = clang_getRangeStart(Ranges->ranges[2]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(4U, line);
cxl = clang_getRangeEnd(Ranges->ranges[2]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(6U, line);
clang_disposeSourceRangeList(Ranges);
// Check obtaining ranges by each file works
CXFile cxf = clang_getFile(ClangTU, Header.c_str());
Ranges = clang_getSkippedRanges(ClangTU, cxf);
EXPECT_EQ(1U, Ranges->count);
cxl = clang_getRangeStart(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(1U, line);
clang_disposeSourceRangeList(Ranges);
cxf = clang_getFile(ClangTU, Main.c_str());
Ranges = clang_getSkippedRanges(ClangTU, cxf);
EXPECT_EQ(2U, Ranges->count);
cxl = clang_getRangeStart(Ranges->ranges[0]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(2U, line);
cxl = clang_getRangeStart(Ranges->ranges[1]);
clang_getSpellingLocation(cxl, nullptr, &line, nullptr, nullptr);
EXPECT_EQ(4U, line);
clang_disposeSourceRangeList(Ranges);
}
}
class LibclangSerializationTest : public LibclangParseTest {
public:
bool SaveAndLoadTU(const std::string &Filename) {
unsigned options = clang_defaultSaveOptions(ClangTU);
if (clang_saveTranslationUnit(ClangTU, Filename.c_str(), options) !=
CXSaveError_None) {
LLVM_DEBUG(llvm::dbgs() << "Saving failed\n");
return false;
}
clang_disposeTranslationUnit(ClangTU);
ClangTU = clang_createTranslationUnit(Index, Filename.c_str());
if (!ClangTU) {
LLVM_DEBUG(llvm::dbgs() << "Loading failed\n");
return false;
}
return true;
}
};
TEST_F(LibclangSerializationTest, TokenKindsAreCorrectAfterLoading) {
// Ensure that "class" is recognized as a keyword token after serializing
// and reloading the AST, as it is not a keyword for the default LangOptions.
std::string HeaderName = "test.h";
WriteFile(HeaderName, "enum class Something {};");
const char *Argv[] = {"-xc++-header", "-std=c++11"};
ClangTU = clang_parseTranslationUnit(Index, HeaderName.c_str(), Argv,
sizeof(Argv) / sizeof(Argv[0]), nullptr,
0, TUFlags);
auto CheckTokenKinds = [=]() {
CXSourceRange Range =
clang_getCursorExtent(clang_getTranslationUnitCursor(ClangTU));
CXToken *Tokens;
unsigned int NumTokens;
clang_tokenize(ClangTU, Range, &Tokens, &NumTokens);
ASSERT_EQ(6u, NumTokens);
EXPECT_EQ(CXToken_Keyword, clang_getTokenKind(Tokens[0]));
EXPECT_EQ(CXToken_Keyword, clang_getTokenKind(Tokens[1]));
EXPECT_EQ(CXToken_Identifier, clang_getTokenKind(Tokens[2]));
EXPECT_EQ(CXToken_Punctuation, clang_getTokenKind(Tokens[3]));
EXPECT_EQ(CXToken_Punctuation, clang_getTokenKind(Tokens[4]));
EXPECT_EQ(CXToken_Punctuation, clang_getTokenKind(Tokens[5]));
clang_disposeTokens(ClangTU, Tokens, NumTokens);
};
CheckTokenKinds();
std::string ASTName = "test.ast";
WriteFile(ASTName, "");
ASSERT_TRUE(SaveAndLoadTU(ASTName));
CheckTokenKinds();
}
TEST_F(LibclangParseTest, clang_getVarDeclInitializer) {
std::string Main = "main.cpp";
WriteFile(Main, "int foo() { return 5; }; const int a = foo();");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_VarDecl) {
const CXCursor Initializer = clang_Cursor_getVarDeclInitializer(cursor);
EXPECT_FALSE(clang_Cursor_isNull(Initializer));
CXString Spelling = clang_getCursorSpelling(Initializer);
const char* const SpellingCSstr = clang_getCString(Spelling);
EXPECT_TRUE(SpellingCSstr);
EXPECT_EQ(std::string(SpellingCSstr), std::string("foo"));
clang_disposeString(Spelling);
return CXChildVisit_Break;
}
return CXChildVisit_Continue;
},
nullptr);
}
TEST_F(LibclangParseTest, clang_hasVarDeclGlobalStorageFalse) {
std::string Main = "main.cpp";
WriteFile(Main, "void foo() { int a; }");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_VarDecl) {
EXPECT_FALSE(clang_Cursor_hasVarDeclGlobalStorage(cursor));
return CXChildVisit_Break;
}
return CXChildVisit_Continue;
},
nullptr);
}
TEST_F(LibclangParseTest, clang_Cursor_hasVarDeclGlobalStorageTrue) {
std::string Main = "main.cpp";
WriteFile(Main, "int a;");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_VarDecl) {
EXPECT_TRUE(clang_Cursor_hasVarDeclGlobalStorage(cursor));
return CXChildVisit_Break;
}
return CXChildVisit_Continue;
},
nullptr);
}
TEST_F(LibclangParseTest, clang_Cursor_hasVarDeclExternalStorageFalse) {
std::string Main = "main.cpp";
WriteFile(Main, "int a;");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_VarDecl) {
EXPECT_FALSE(clang_Cursor_hasVarDeclExternalStorage(cursor));
return CXChildVisit_Break;
}
return CXChildVisit_Continue;
},
nullptr);
}
TEST_F(LibclangParseTest, clang_Cursor_hasVarDeclExternalStorageTrue) {
std::string Main = "main.cpp";
WriteFile(Main, "extern int a;");
ClangTU = clang_parseTranslationUnit(Index, Main.c_str(), nullptr, 0, nullptr,
0, TUFlags);
CXCursor C = clang_getTranslationUnitCursor(ClangTU);
clang_visitChildren(
C,
[](CXCursor cursor, CXCursor parent,
CXClientData client_data) -> CXChildVisitResult {
if (clang_getCursorKind(cursor) == CXCursor_VarDecl) {
EXPECT_TRUE(clang_Cursor_hasVarDeclExternalStorage(cursor));
return CXChildVisit_Break;
}
return CXChildVisit_Continue;
},
nullptr);
}
class LibclangRewriteTest : public LibclangParseTest {
public:
CXRewriter Rew = nullptr;
std::string Filename;
CXFile File = nullptr;
void SetUp() override {
LibclangParseTest::SetUp();
Filename = "file.cpp";
WriteFile(Filename, "int main() { return 0; }");
ClangTU = clang_parseTranslationUnit(Index, Filename.c_str(), nullptr, 0,
nullptr, 0, TUFlags);
Rew = clang_CXRewriter_create(ClangTU);
File = clang_getFile(ClangTU, Filename.c_str());
}
void TearDown() override {
clang_CXRewriter_dispose(Rew);
LibclangParseTest::TearDown();
}
};
static std::string getFileContent(const std::string& Filename) {
std::ifstream RewrittenFile(Filename);
std::string RewrittenFileContent;
std::string Line;
while (std::getline(RewrittenFile, Line)) {
if (RewrittenFileContent.empty())
RewrittenFileContent = Line;
else {
RewrittenFileContent += "\n" + Line;
}
}
return RewrittenFileContent;
}
TEST_F(LibclangRewriteTest, RewriteReplace) {
CXSourceLocation B = clang_getLocation(ClangTU, File, 1, 5);
CXSourceLocation E = clang_getLocation(ClangTU, File, 1, 9);
CXSourceRange Rng = clang_getRange(B, E);
clang_CXRewriter_replaceText(Rew, Rng, "MAIN");
ASSERT_EQ(clang_CXRewriter_overwriteChangedFiles(Rew), 0);
EXPECT_EQ(getFileContent(Filename), "int MAIN() { return 0; }");
}
TEST_F(LibclangRewriteTest, RewriteReplaceShorter) {
CXSourceLocation B = clang_getLocation(ClangTU, File, 1, 5);
CXSourceLocation E = clang_getLocation(ClangTU, File, 1, 9);
CXSourceRange Rng = clang_getRange(B, E);
clang_CXRewriter_replaceText(Rew, Rng, "foo");
ASSERT_EQ(clang_CXRewriter_overwriteChangedFiles(Rew), 0);
EXPECT_EQ(getFileContent(Filename), "int foo() { return 0; }");
}
TEST_F(LibclangRewriteTest, RewriteReplaceLonger) {
CXSourceLocation B = clang_getLocation(ClangTU, File, 1, 5);
CXSourceLocation E = clang_getLocation(ClangTU, File, 1, 9);
CXSourceRange Rng = clang_getRange(B, E);
clang_CXRewriter_replaceText(Rew, Rng, "patatino");
ASSERT_EQ(clang_CXRewriter_overwriteChangedFiles(Rew), 0);
EXPECT_EQ(getFileContent(Filename), "int patatino() { return 0; }");
}
TEST_F(LibclangRewriteTest, RewriteInsert) {
CXSourceLocation Loc = clang_getLocation(ClangTU, File, 1, 5);
clang_CXRewriter_insertTextBefore(Rew, Loc, "ro");
ASSERT_EQ(clang_CXRewriter_overwriteChangedFiles(Rew), 0);
EXPECT_EQ(getFileContent(Filename), "int romain() { return 0; }");
}
TEST_F(LibclangRewriteTest, RewriteRemove) {
CXSourceLocation B = clang_getLocation(ClangTU, File, 1, 5);
CXSourceLocation E = clang_getLocation(ClangTU, File, 1, 9);
CXSourceRange Rng = clang_getRange(B, E);
clang_CXRewriter_removeText(Rew, Rng);
ASSERT_EQ(clang_CXRewriter_overwriteChangedFiles(Rew), 0);
EXPECT_EQ(getFileContent(Filename), "int () { return 0; }");
}
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