include/comma/basic/Location.h

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//===-- basic/Location.h -------------------------------------- -*- C++ -*-===//
//
// This file is distributed under the MIT license.  See LICENSE.txt for details.
//
// Copyright (C) 2008, Stephen Wilson
//
//===----------------------------------------------------------------------===//

#ifndef COMMA_BASIC_LOCATION_HDR_GUARD
#define COMMA_BASIC_LOCATION_HDR_GUARD

#include <string>

namespace comma {

class TextProvider;

class Location {

public:
    Location() : offset(0) { }

    Location(unsigned offset) : offset(offset) { }

    bool isInvalid() const { return offset == 0; }

    bool isValid() const { return !isInvalid(); }

    unsigned getOffset() const { return offset; }

    operator unsigned() const { return offset; }

private:
    unsigned offset;
};

class SourceLocation {

public:
    SourceLocation(unsigned line, unsigned column, const TextProvider *provider)
        : line(line), column(column), provider(provider) { }

    SourceLocation() : line(0), column(0), provider(0) { }

    unsigned getLine() const { return line; }

    unsigned getColumn() const { return column; }

    const TextProvider *getTextProvider() const { return provider; }

private:
    unsigned line;
    unsigned column;
    const TextProvider *provider;
};

} // End comma namespace.

#endif

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