xsil/Xreader.hh

#ifndef XSIL_XREADER_HH
#define XSIL_XREADER_HH

#include <iosfwd>
#include <string>
#include "lxr.hh"
#include "xsil.hh"
#include "attrList.hh"

namespace xsil {

  class array;
  class ligolw;
  class XSIL;
  class param;
  class Stream;
  class table;
  class time;

class Xreader {
public:

  enum LxrTokens {
    tkEnd,       // end of file
    tkWord,      // word
    tkString,    // quoted string
    tkNumber,    // number
    tkEqual,     // =
    tkOpenTag,   // <
    tkOpenETag,  // </
    tkOpenCTag,  // <!
    tkOpenHead,  // <?
    tkEndTag,    // >
    tkEndSTag,   // />
    tkCloseHead, // ?>
    tkEscape,    // &opr;
    tkQMark
  };

private:
  enum CharGroups {
    kInvChar,
    kAlpha,
    kNumer,
    kSpace
  };

  enum LxrStates {
    stStart,     // start state
    stInWord,    // in word
    stInString,  // quoted string
    stNumInt,    // number nnnn
    stNumFix,    // nnn.[nnn]
    stNumExp ,   // nnn[.nnn]e
    stNumSExp,   // nnn[.nnn]e[snnn]
    stTag,       // <[]
    stQMark,     // ?
    stETag,      // /
    stEscape,    // &[opr]
    stNStates
  };

public:
    Xreader(std::istream& istr);

    ~Xreader(void);

    array* readArray(const attr_list& a, int hdronly);

    xobj* readDoc(void);

    void readEndTag(const std::string& endtag);

    void readHeader(void);

    ligolw* readLigoLW(const attr_list& a, int tagonly);

    xobj* readObject(void);

    param* readParam(const attr_list& a, int tagonly);

    Stream* readStream(const attr_list& a, int tagonly);

    table* readTable(const attr_list& a, int tagonly);

    time* readTime(const attr_list& a, int tagonly);

    int readTag(std::string& name, attr_list& attrs);

    void setDebug(int lvl);

private:
    //----------------------------------  Set op loexographic analysis
    void lxSetup(void);

    //----------------------------------  Get a syntactic token
    LxrTokens getToken(std::string& token);

private:
    std::istream& mStream;
    lxr           mLexr;
    int           mDebug;
};     // xsil::Xreader

}      // namespace xsil

#endif  //   XSIL_XREADER_HH

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