2024-03-19 17:45:12 +08:00

105 lines
4.4 KiB
C++

/**************************************************************************************/
/* */
/* Visualization Library */
/* http://visualizationlibrary.org */
/* */
/* Copyright (c) 2005-2020, Michele Bosi */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without modification, */
/* are permitted provided that the following conditions are met: */
/* */
/* - Redistributions of source code must retain the above copyright notice, this */
/* list of conditions and the following disclaimer. */
/* */
/* - Redistributions in binary form must reproduce the above copyright notice, this */
/* list of conditions and the following disclaimer in the documentation and/or */
/* other materials provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND */
/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED */
/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR */
/* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/**************************************************************************************/
#ifndef VLXParser_INCLUDE_ONCE
#define VLXParser_INCLUDE_ONCE
#include <vlCore/BufferedStream.hpp>
#include <vlX/Linker.hpp>
namespace vlX
{
/** Base class for VLX parsers. */
class Parser: public vl::Object
{
VL_INSTRUMENT_ABSTRACT_CLASS(vlX::Parser, vl::Object)
public:
virtual bool parseHeader() = 0;
virtual bool parse() = 0;
//! Links the
bool link()
{
Linker linker;
for(size_t i=0; i<mStructures.size(); ++i)
linker.add(mStructures[i].get());
return linker.link();
}
//! Moves the <Metadata> key/value pairs in the Metadata map for quick and easy access and removes the <Metadata> structure.
void parseMetadata()
{
mMetadata.clear();
for(size_t i=0; i<mStructures.size(); ++i)
{
if (mStructures[i]->tag() == "<Metadata>")
{
const VLXStructure* st = mStructures[i].get();
for(size_t ikey=0; ikey<st->value().size(); ++ikey)
mMetadata[st->value()[ikey].key()] = st->value()[ikey].value();
mStructures.erase( mStructures.begin() + i );
}
}
}
//! The imported structures.
std::vector< vl::ref<VLXStructure> >& structures() { return mStructures; }
//! The imported structures.
const std::vector< vl::ref<VLXStructure> >& structures() const { return mStructures; }
//! The imported metadata.
const std::map< std::string, VLXValue >& metadata() const { return mMetadata; }
//! The encoding used to encode strings.
const std::string& encoding() const { return mEncoding; }
//! The VLX language version.
unsigned short version() const { return mVersion;}
protected:
std::string mEncoding;
unsigned short mVersion;
std::vector< vl::ref<VLXStructure> > mStructures;
std::map< std::string, VLXValue > mMetadata;
};
}
#endif