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FBwSqlScan.h

#include <iostream>
#include <fstream>
#include <string>
#include <ctype.h>

namespace fbwrap
{

typedef SimList<string> SymList;

class Scanner
{
    int line;
    int charpos;
    std::istream &in;
    virtual bool isword(char c)
    {
        return (isalnum(c) || c=='_' || c=='$');
    }
    void SkipComent();
    char lGet()
    {
        int c=in.get();
        charpos++;
        if(c=='\n')
            line++;
        return (char)c;
    }
public:
    Scanner(std::istream &pIn)
            : in(pIn)
    {
        line=0;
        charpos=0;
    }
    char Get();
    void Putback(char c)
    {
        in.putback(c);
        charpos--;
        if(c=='\n')
            line--;
    }
    bool Eof()
    {
        return in.eof();
    }
    bool Check(const char *s);
    bool SeekChar(char c);
    void GetWORD(string &s);
    void GetSTRING(string &s);
    void SkipSp();
    int GetLine()
    {
        return line;
    }
    int GetPos()
    {
        return charpos;
    }
    void Reset()
    {
        charpos=line=0;
    }
};

class SqlScript : public Scanner
{
public:
    enum StateEnum {st_init,st_empty,st_stmt,st_ok,st_error, st_end};
    enum TypeEnum {t_none,t_query,t_term,t_autoDDL,t_names,t_transaction,t_connect,t_edit};
private:
    string sqlst;
    string Var;
    StateEnum state;
    char endchar;       // End of statetment character
    bool empty;
    TypeEnum stmtType;
    int linestart;
public:
    SymList vars;
    SqlScript(std::istream &pIn);
    bool ScriptEnd()
    {
        return state==st_end;
    }
    string GetSqlText()
    {
        return sqlst;
    }
    int GetState()
    {
        return state;
    }
    string GetVar()
    {
        return Var;
    }
    int GetType()
    {
        return stmtType;
    }
    void Scan();
    int GetLineStart()
    {
        return linestart;
    }
};

}

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