2021-10-31 16:45:49 +01:00

82 lines
2.6 KiB
C++

#include "MenuFileReader.h"
#include "MenuFileParser.h"
#include "Parsing/Impl/CommentRemovingStreamProxy.h"
#include "Parsing/Impl/DefinesStreamProxy.h"
#include "Parsing/Impl/IncludingStreamProxy.h"
#include "Parsing/Impl/ParserMultiInputStream.h"
#include "Parsing/Impl/ParserSingleInputStream.h"
#include "Parsing/Simple/SimpleLexer.h"
MenuFileReader::MenuFileReader(std::istream& stream, std::string fileName, MenuFeatureLevel featureLevel, include_callback_t includeCallback)
: m_feature_level(featureLevel),
m_file_name(std::move(fileName)),
m_stream(nullptr)
{
OpenBaseStream(stream, std::move(includeCallback));
SetupStreamProxies();
m_stream = m_open_streams.back().get();
}
MenuFileReader::MenuFileReader(std::istream& stream, std::string fileName, MenuFeatureLevel featureLevel)
: m_feature_level(featureLevel),
m_file_name(std::move(fileName)),
m_stream(nullptr)
{
OpenBaseStream(stream, nullptr);
SetupStreamProxies();
m_stream = m_open_streams.back().get();
}
bool MenuFileReader::OpenBaseStream(std::istream& stream, include_callback_t includeCallback)
{
if (includeCallback)
m_open_streams.emplace_back(std::make_unique<ParserMultiInputStream>(stream, m_file_name, std::move(includeCallback)));
else
m_open_streams.emplace_back(std::make_unique<ParserSingleInputStream>(stream, m_file_name));
return true;
}
void MenuFileReader::SetupDefinesProxy()
{
auto defines = std::make_unique<DefinesStreamProxy>(m_open_streams.back().get());
defines->AddDefine(DefinesStreamProxy::Define("PC", "1"));
switch(m_feature_level)
{
case MenuFeatureLevel::IW4:
defines->AddDefine(DefinesStreamProxy::Define("FEATURE_LEVEL_IW4", "1"));
break;
case MenuFeatureLevel::IW5:
defines->AddDefine(DefinesStreamProxy::Define("FEATURE_LEVEL_IW5", "1"));
break;
default:
assert(false);
break;
}
m_open_streams.emplace_back(std::move(defines));
}
void MenuFileReader::SetupStreamProxies()
{
m_open_streams.emplace_back(std::make_unique<CommentRemovingStreamProxy>(m_open_streams.back().get()));
m_open_streams.emplace_back(std::make_unique<IncludingStreamProxy>(m_open_streams.back().get()));
SetupDefinesProxy();
m_stream = m_open_streams.back().get();
}
bool MenuFileReader::ReadMenuFile()
{
const auto lexer = std::make_unique<SimpleLexer>(m_stream, SimpleLexer::Config{false, true, false});
const auto parser = std::make_unique<MenuFileParser>(lexer.get(), m_feature_level);
if (parser->Parse())
return true;
std::cout << "Parsing menu file failed!" << std::endl;
return false;
}