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

// C Includes

// C++ Includes

// Other libraries and framework includes

// Project includes
#include "lldb/lldb-public.h"
#include "lldb/lldb-enumerations.h"

#include "lldb/Core/Debugger.h"
#include "lldb/Core/StreamString.h"
#include "lldb/DataFormatters/TypeSynthetic.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/ScriptInterpreter.h"
#include "lldb/Symbol/ClangASTType.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"

using namespace lldb;
using namespace lldb_private;

void
TypeFilterImpl::AddExpressionPath (const std::string& path)
{
    bool need_add_dot = true;
    if (path[0] == '.' ||
        (path[0] == '-' && path[1] == '>') ||
        path[0] == '[')
        need_add_dot = false;
    // add a '.' symbol to help forgetful users
    if(!need_add_dot)
        m_expression_paths.push_back(path);
    else
        m_expression_paths.push_back(std::string(".") + path);
}

bool
TypeFilterImpl::SetExpressionPathAtIndex (size_t i, const std::string& path)
{
    if (i >= GetCount())
        return false;
    bool need_add_dot = true;
    if (path[0] == '.' ||
        (path[0] == '-' && path[1] == '>') ||
        path[0] == '[')
        need_add_dot = false;
    // add a '.' symbol to help forgetful users
    if(!need_add_dot)
        m_expression_paths[i] = path;
    else
        m_expression_paths[i] = std::string(".") + path;
    return true;
}

size_t
TypeFilterImpl::FrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
    const char* name_cstr = name.GetCString();
    if (name_cstr)
    {
        for (size_t i = 0; i < filter->GetCount(); i++)
        {
            const char* expr_cstr = filter->GetExpressionPathAtIndex(i);
            if (expr_cstr)
            {
                if (*expr_cstr == '.')
                    expr_cstr++;
                else if (*expr_cstr == '-' && *(expr_cstr+1) == '>')
                    expr_cstr += 2;
            }
            if (expr_cstr)
            {
                if (!::strcmp(name_cstr, expr_cstr))
                    return i;
            }
        }
    }
    return UINT32_MAX;
}

std::string
TypeFilterImpl::GetDescription()
{
    StreamString sstr;
    sstr.Printf("%s%s%s {\n",
                Cascades() ? "" : " (not cascading)",
                SkipsPointers() ? " (skip pointers)" : "",
                SkipsReferences() ? " (skip references)" : "");
    
    for (size_t i = 0; i < GetCount(); i++)
    {
        sstr.Printf("    %s\n",
                    GetExpressionPathAtIndex(i));
    }
    
    sstr.Printf("}");
    return sstr.GetString();
}

std::string
CXXSyntheticChildren::GetDescription()
{
    StreamString sstr;
    sstr.Printf("%s%s%s Generator at %p - %s",
                Cascades() ? "" : " (not cascading)",
                SkipsPointers() ? " (skip pointers)" : "",
                SkipsReferences() ? " (skip references)" : "",
                reinterpret_cast<void*>(reinterpret_cast<intptr_t>(m_create_callback)),
                m_description.c_str());

    return sstr.GetString();
}

lldb::ValueObjectSP
SyntheticChildrenFrontEnd::CreateValueObjectFromExpression (const char* name,
                                                            const char* expression,
                                                            const ExecutionContext& exe_ctx)
{
    ValueObjectSP valobj_sp(ValueObject::CreateValueObjectFromExpression(name, expression, exe_ctx));
    if (valobj_sp)
        valobj_sp->SetSyntheticChildrenGenerated(true);
    return valobj_sp;
}

lldb::ValueObjectSP
SyntheticChildrenFrontEnd::CreateValueObjectFromAddress (const char* name,
                                                         uint64_t address,
                                                         const ExecutionContext& exe_ctx,
                                                         ClangASTType type)
{
    ValueObjectSP valobj_sp(ValueObject::CreateValueObjectFromAddress(name, address, exe_ctx, type));
    if (valobj_sp)
        valobj_sp->SetSyntheticChildrenGenerated(true);
    return valobj_sp;
}

lldb::ValueObjectSP
SyntheticChildrenFrontEnd::CreateValueObjectFromData (const char* name,
                                                      const DataExtractor& data,
                                                      const ExecutionContext& exe_ctx,
                                                      ClangASTType type)
{
    ValueObjectSP valobj_sp(ValueObject::CreateValueObjectFromData(name, data, exe_ctx, type));
    if (valobj_sp)
        valobj_sp->SetSyntheticChildrenGenerated(true);
    return valobj_sp;
}

#ifndef LLDB_DISABLE_PYTHON

ScriptedSyntheticChildren::FrontEnd::FrontEnd(std::string pclass, ValueObject &backend) :
SyntheticChildrenFrontEnd(backend),
m_python_class(pclass),
m_wrapper_sp(),
m_interpreter(NULL)
{
    if (backend == LLDB_INVALID_UID)
        return;
    
    TargetSP target_sp = backend.GetTargetSP();
    
    if (!target_sp)
        return;
    
    m_interpreter = target_sp->GetDebugger().GetCommandInterpreter().GetScriptInterpreter();
    
    if (m_interpreter != NULL)
        m_wrapper_sp = m_interpreter->CreateSyntheticScriptedProvider(m_python_class.c_str(), backend.GetSP());
}

ScriptedSyntheticChildren::FrontEnd::~FrontEnd()
{
}

lldb::ValueObjectSP
ScriptedSyntheticChildren::FrontEnd::GetChildAtIndex (size_t idx)
{
    if (!m_wrapper_sp || !m_interpreter)
        return lldb::ValueObjectSP();
    
    return m_interpreter->GetChildAtIndex(m_wrapper_sp, idx);
}

bool
ScriptedSyntheticChildren::FrontEnd::IsValid ()
{
    return (m_wrapper_sp && m_wrapper_sp->IsValid() && m_interpreter);
}

size_t
ScriptedSyntheticChildren::FrontEnd::CalculateNumChildren ()
{
    if (!m_wrapper_sp || m_interpreter == NULL)
        return 0;
    return m_interpreter->CalculateNumChildren(m_wrapper_sp);
}

bool
ScriptedSyntheticChildren::FrontEnd::Update ()
{
    if (!m_wrapper_sp || m_interpreter == NULL)
        return false;
    
    return m_interpreter->UpdateSynthProviderInstance(m_wrapper_sp);
}

bool
ScriptedSyntheticChildren::FrontEnd::MightHaveChildren ()
{
    if (!m_wrapper_sp || m_interpreter == NULL)
        return false;
    
    return m_interpreter->MightHaveChildrenSynthProviderInstance(m_wrapper_sp);
}

size_t
ScriptedSyntheticChildren::FrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
    if (!m_wrapper_sp || m_interpreter == NULL)
        return UINT32_MAX;
    return m_interpreter->GetIndexOfChildWithName(m_wrapper_sp, name.GetCString());
}

lldb::ValueObjectSP
ScriptedSyntheticChildren::FrontEnd::GetSyntheticValue ()
{
    if (!m_wrapper_sp || m_interpreter == NULL)
        return nullptr;
    
    return m_interpreter->GetSyntheticValue(m_wrapper_sp);
}

std::string
ScriptedSyntheticChildren::GetDescription()
{
    StreamString sstr;
    sstr.Printf("%s%s%s Python class %s",
                Cascades() ? "" : " (not cascading)",
                SkipsPointers() ? " (skip pointers)" : "",
                SkipsReferences() ? " (skip references)" : "",
                m_python_class.c_str());
    
    return sstr.GetString();
}

#endif // #ifndef LLDB_DISABLE_PYTHON