/**
Go to the next entry in the table.
\return Returns true if the iteration is done.
**/
bool LuaStackTableIterator::Next()
{
// This function is only active if Reset() has been called head.
luaplus_assert( IsValid() );
// This is a local helper variable so we don't waste space in the class
// definition.
LuaState* state = m_tableObj.GetState();
// Do any stack management operations.
if ( m_autoStackManagement )
{
state->SetTop( m_startStackIndex + 1 );
}
else
{
// If this luaplus_assert fires, then you left something on the stack.
luaplus_assert( state->GetTop() == m_startStackIndex + 1 );
}
// Do the Lua table iteration.
if ( state->Next( m_tableObj ) == 0 )
{
// Invalidate the iterator.
m_startStackIndex = -1;
return false;
}
// The iterator is still valid.
return true;
}
/**
Start iteration at the beginning of the table.
**/
void LuaStackTableIterator::Reset()
{
// Start afresh...
LuaState* state = m_tableObj.GetState();
m_startStackIndex = state->GetTop();
// Push the head stack entry.
state->PushNil();
// Start the iteration. If the return value is 0, then the iterator
// will be invalid.
if ( state->Next( m_tableObj ) == 0 )
m_startStackIndex = -1;
}
/**
Invalidates the iterator. Call this function if you early abort from
an iteration loop (such as before it hits the end).
**/
void LuaStackTableIterator::Invalidate()
{
// See if the iterator is already invalid.
if ( !IsValid() )
return;
// This is a local helper variable so we don't waste space in the class
// definition.
LuaState* state = m_tableObj.GetState();
if ( !m_autoStackManagement )
{
luaplus_assert( state->GetTop() <= m_startStackIndex + 1 );
}
// Set the stack back.
state->SetTop( m_startStackIndex );
// Invalidate the iterator.
m_startStackIndex = -1;
}
// LuaDumpObject(file, key, value, alphabetical, indentLevel, maxIndentLevel, writeAll)
extern "C" int LS_LuaDumpObject( lua_State* L )
{
LuaStateOutFile file;
LuaState* state = lua_State_To_LuaState(L);
LuaStack args(state);
LuaStackObject fileObj = args[1];
if (fileObj.IsTable() && state->GetTop() == 1)
{
LuaObject valueObj(fileObj);
LuaObject nameObj;
LuaStateOutString stringFile;
state->DumpObject(stringFile, NULL, valueObj, LuaState::DUMP_ALPHABETICAL, 0, -1);
state->PushString(stringFile.GetBuffer());
return 1;
}
const char* fileName = NULL;
if ( fileObj.IsUserData() )
{
FILE* stdioFile = (FILE *)fileObj.GetUserData();
file.Assign( stdioFile );
}
else if ( fileObj.IsString() )
{
fileName = fileObj.GetString();
}
LuaObject nameObj = args[2];
LuaObject valueObj = args[3];
LuaStackObject alphabeticalObj = args[4];
LuaStackObject indentLevelObj = args[5];
LuaStackObject maxIndentLevelObj = args[6];
LuaStackObject writeAllObj = args[7];
bool writeAll = writeAllObj.IsBoolean() ? writeAllObj.GetBoolean() : false;
bool alphabetical = alphabeticalObj.IsBoolean() ? alphabeticalObj.GetBoolean() : true;
unsigned int maxIndentLevel = maxIndentLevelObj.IsInteger() ? (unsigned int)maxIndentLevelObj.GetInteger() : 0xFFFFFFFF;
unsigned int flags = (alphabetical ? LuaState::DUMP_ALPHABETICAL : 0) | (writeAll ? LuaState::DUMP_WRITEALL : 0);
if (fileName)
{
if (strcmp(fileName, ":string") == 0)
{
LuaStateOutString stringFile;
state->DumpObject(stringFile, nameObj, valueObj, flags, indentLevelObj.GetInteger(), maxIndentLevel);
state->PushString(stringFile.GetBuffer());
return 1;
}
else
{
state->DumpObject(fileName, nameObj, valueObj, flags, (unsigned int)indentLevelObj.GetInteger(), maxIndentLevel);
}
}
else
{
state->DumpObject(file, nameObj, valueObj, flags, (unsigned int)indentLevelObj.GetInteger(), maxIndentLevel);
}
return 0;
}
Cloud::LuaStackSentry::LuaStackSentry(const LuaState& state)
: m_state(state)
, m_stackSize(state.GetTop())
{
}
