llvm-project/lldb/source/Expression/ASTDumper.cpp

//===-- ASTDumper.cpp -------------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "lldb/Core/Log.h"
#include "lldb/Expression/ASTDumper.h"

#include "llvm/Support/raw_ostream.h"

using namespace lldb_private;

ASTDumper::ASTDumper (clang::Decl *decl)
{
    clang::DeclContext *decl_ctx = llvm::dyn_cast<clang::DeclContext>(decl);
    
    bool has_external_lexical_storage;
    bool has_external_visible_storage;
    
    if (decl_ctx)
    {
        has_external_lexical_storage = decl_ctx->hasExternalLexicalStorage();
        has_external_visible_storage = decl_ctx->hasExternalVisibleStorage();
        decl_ctx->setHasExternalLexicalStorage(false);
        decl_ctx->setHasExternalVisibleStorage(false);
    }
    
    llvm::raw_string_ostream os(m_dump);
    decl->print (os);
    os.flush();
    
    if (decl_ctx)
    {
        decl_ctx->setHasExternalLexicalStorage(has_external_lexical_storage);
        decl_ctx->setHasExternalVisibleStorage(has_external_visible_storage);
    }
}

ASTDumper::ASTDumper (clang::DeclContext *decl_ctx)
{
    bool has_external_lexical_storage = decl_ctx->hasExternalLexicalStorage();
    bool has_external_visible_storage = decl_ctx->hasExternalVisibleStorage();
    
    decl_ctx->setHasExternalLexicalStorage(false);
    decl_ctx->setHasExternalVisibleStorage(false);
    
    if (clang::Decl *decl = llvm::dyn_cast<clang::Decl>(decl_ctx))
    {
        llvm::raw_string_ostream os(m_dump);
        decl->print (os);
        os.flush();
    }
    else
    {
        m_dump.assign("<DeclContext is not a Decl>");
    }
    
    decl_ctx->setHasExternalLexicalStorage(has_external_lexical_storage);
    decl_ctx->setHasExternalVisibleStorage(has_external_visible_storage);
}

ASTDumper::ASTDumper (const clang::Type *type)
{
    m_dump = clang::QualType(type, 0).getAsString();
}

ASTDumper::ASTDumper (clang::QualType type)
{
    m_dump = type.getAsString();
}

ASTDumper::ASTDumper (lldb::clang_type_t type)
{
    m_dump = clang::QualType::getFromOpaquePtr(type).getAsString();
}
    
const char *
ASTDumper::GetCString()
{
    return m_dump.c_str();
}

void ASTDumper::ToSTDERR()
{
    fprintf(stderr, "%s\n", m_dump.c_str());
}

void ASTDumper::ToLog(Log *log, const char *prefix)
{
    size_t len = m_dump.length() + 1;
    
    char *alloc = (char*)malloc(len);
    char *str = alloc;
    
    memcpy(str, m_dump.c_str(), len);
    
    char *end = NULL;
    
    end = strchr(str, '\n');
    
    while (end)
    {
        *end = '\0';
        
        log->Printf("%s%s", prefix, str);
        
        *end = '\n';
        
        str = end + 1;
        end = strchr(str, '\n');
    }
    
    log->Printf("%s%s", prefix, str);
                    
    free(alloc);
}

void ASTDumper::ToStream(lldb::StreamSP &stream)
{
    stream->PutCString(m_dump.c_str());
}