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ObjectFile.h

/*
  File: ObjectFile.h

  Copyright(C) C. Kotterink, Computed Graphics
*/
#ifndef OBJECTFILE_H
#define OBJECTFILE_H

#include<Token.h>
#include<TextFile.h>

#include<map>
#include<stack>

class ObjectFile
{
public:
    static TokenId findKeyword(const string &keyword);

    static TokenId declareKeyword(const string &keyword);

    ObjectFile() : peeked(false) {
    }

    ObjectFile(const string &name) : peeked(false) {
        open(name);
    }

    void open(const string &name);

    bool eof() {
        return (file.size() == 1) && file.top().eof();
    }

    void error(const string errorString);

    void warning(const string errorString);

    void unexpected(const Token &t);

    void next(Token &token);

    void check(TokenId type, const Token &token);

    Token &peek();

    Token accept(TokenId type);

protected:
    static TokenId lastToken;

    static map<string, TokenId> keywordTable;

    void readToken(Token &token);

    void push(const string &name);

    void pop();

    void getChar();

    void skipSpaces();

    stack<TextFile> file;

    Token peekToken;

    bool peeked;

    int ch;
};

inline ObjectFile &operator>>(ObjectFile &f, Token &token)
{
    f.next(token);
    return f;
}

inline ObjectFile &operator>>(ObjectFile &f, const TokenId token)
{
    f.accept(token);
    return f;
}

// Primitive stream operators

ObjectFile &operator>>(ObjectFile &f, float &d);

ObjectFile &operator>>(ObjectFile &f, double &d);

ObjectFile &operator>>(ObjectFile &f, unsigned short &i);

ObjectFile &operator>>(ObjectFile &f, short &i);

ObjectFile &operator>>(ObjectFile &f, unsigned int &i);

ObjectFile &operator>>(ObjectFile &f, int &i);

ObjectFile &operator>>(ObjectFile &f, string &str);

#endif

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