Parser.h

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/*
 * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_ESIPARSER_H
#define SQUID_ESIPARSER_H
 
#include "base/RefCount.h"
 
#include <list>
 
class ESIParserClient
{
public:
    virtual void start(const char *el, const char **attr, size_t attrCount) = 0;
    virtual void end(const char *el) = 0;
    virtual void parserDefault (const char *s, int len) =0;
    virtual void parserComment (const char *s) = 0;
    virtual ~ESIParserClient() {};
};
 
class ESIParser : public RefCountable
{
public:
    class Register;
    typedef RefCount<ESIParser> Pointer;
 
    static void registerParser(const char *name, Pointer (*new_func)(ESIParserClient *aClient));
    static Pointer NewParser(ESIParserClient *aClient);
    static char *Type;
 
    virtual bool parse(char const *dataToParse, size_t const lengthOfData, bool const endOfStream) = 0;
 
    virtual long int lineNumber() const =0;
    virtual char const * errorString() const =0;
 
protected:
    ESIParser() {};
 
private:
    static Register *Parser;
    static std::list<Register *> & GetRegistry();
};
 
class ESIParser::Register
{
 
public:
    Register(const char *_name, ESIParser::Pointer (*_newParser)(ESIParserClient *aClient));
    ~Register();
 
    const char *name;
    ESIParser::Pointer (*newParser)(ESIParserClient *aClient);
};
 
#define EsiParserDefinition(ThisClass) \
    ESIParser::Pointer ThisClass::NewParser(ESIParserClient *aClient) \
    { \
    return new ThisClass (aClient); \
    }
 
#define EsiParserDeclaration \
    static ESIParser::Pointer NewParser(ESIParserClient *aClient)
 
#endif /* SQUID_ESIPARSER_H */