CItutorial3.cpp

/***   CItutorial3.cpp   *****************************************************
 * This code is licensed under the New BSD license.
 * See LICENSE.txt for details.
 * 
 * The CI tutorials remake the original tutorials but using the
 * CompilerInstance object which has as one of its purpose to create commonly
 * used Clang types.
 *****************************************************************************/
#include <iostream>

#include "llvm/Support/Host.h"

#include "clang/Frontend/CompilerInstance.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/Diagnostic.h"

/******************************************************************************
 *
 *****************************************************************************/
int main()
{
    using clang::CompilerInstance;
    using clang::TargetOptions;
    using clang::TargetInfo;
    using clang::FileEntry;
    using clang::Token;

    CompilerInstance ci;
    ci.createDiagnostics(0,NULL);

    TargetOptions to;
    to.Triple = llvm::sys::getDefaultTargetTriple();
    TargetInfo *pti = TargetInfo::CreateTargetInfo(ci.getDiagnostics(), to);
    ci.setTarget(pti);

    ci.createFileManager();
    ci.createSourceManager(ci.getFileManager());
    ci.createPreprocessor();
    ci.getPreprocessorOpts().UsePredefines = false;

	const FileEntry *pFile = ci.getFileManager().getFile("test.c");
    ci.getSourceManager().createMainFileID(pFile);
    ci.getPreprocessor().EnterMainSourceFile();
    ci.getDiagnosticClient().BeginSourceFile(ci.getLangOpts(),
                                             &ci.getPreprocessor());
    Token tok;
    do {
        ci.getPreprocessor().Lex(tok);
        if( ci.getDiagnostics().hasErrorOccurred())
            break;
        ci.getPreprocessor().DumpToken(tok);
        std::cerr << std::endl;
    } while ( tok.isNot(clang::tok::eof));
    ci.getDiagnosticClient().EndSourceFile();

    return 0;
}