我有一个名为的 C++ 标头class.h我想解析:
class MyClass
{
public:
Class() {}
~Class() {}
bool isTrue() const;
bool isFalse() const;
private:
bool m_attrib;
};
bool MyClass::isTrue() const
{
return true;
}
bool MyClass::isFalse() const
{
return false;
}
我将 clang 编译器实例与 AST 使用者一起使用。我的所有代码都可以与 c 源文件配合使用。但我无法配置/强制 CompilerInstance 必须使用的语言。
这是我使用的代码:
m_ci = new clang::CompilerInstance();
/*configure the langage to use*/
clang::CompilerInvocation *invocation = new clang::CompilerInvocation;
clang::LangOptions langOpts;
/*with langage = clang::IK_CXX*/
langOpts.CPlusPlus = 1;
invocation->setLangDefaults(langOpts, langage);
m_ci->setInvocation(invocation);
m_ci->createDiagnostics();
llvm::IntrusiveRefCntPtr<clang::TargetOptions> pto( new clang::TargetOptions());
pto->Triple = llvm::sys::getDefaultTargetTriple();
clang::TargetInfo *pti = clang::TargetInfo::CreateTargetInfo(m_ci->getDiagnostics(), pto.getPtr());
m_ci->setTarget(pti);
m_ci->createFileManager();
m_ci->createSourceManager(ci->getFileManager());
m_ci->createPreprocessor();
/*add some header search paths*/
m_hso = llvm::IntrusiveRefCntPtr<clang::HeaderSearchOptions>(new clang::HeaderSearchOptions());
m_hso->AddPath( pathName.c_str(),
clang::frontend::Angled,
false,
false);
/*add the source file*/
const clang::FileEntry *pFile = m_ci->getFileManager().getFile(fileName.c_str());
m_ci->getSourceManager().createMainFileID(pFile);
/*parse*/
clang::InitializePreprocessor(m_ci->getPreprocessor(),
m_ci->getPreprocessorOpts(),
*m_hso,
m_ci->getFrontendOpts());
m_ci->createASTContext();
m_headerElements = new HeaderElements();
m_ci->setASTConsumer(m_headerElements);
m_ci->getDiagnosticClient().BeginSourceFile(m_ci->getLangOpts(),
&m_ci->getPreprocessor());
clang::ParseAST(m_ci->getPreprocessor(), m_headerElements, m_ci->getASTContext());
m_ci->getDiagnosticClient().EndSourceFile();
当我测试这个时,解析器会抛出如下错误:
error: unknown type name 'class'
还有测试
m_ci->getLangOpts.CPlusPlus == 0
是 true,因此似乎 LangOptions 未应用于 CompilerInstance。