exceptions.h

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/*
 * Copyright (c) 2013 Jonathan Anderson
 * All rights reserved.
 *
 * This software was developed by SRI International and the University of
 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
 * ("CTSRD"), as part of the DARPA CRASH research programme.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef EXCEPTIONS_H
#define EXCEPTIONS_H

#include "Support/Printable.h"
#include "Support/SourceLocation.h"

#include <exception>
#include <memory>
#include <string>


namespace fabrique {


class AssertionFailure : public std::exception
{
public:
    AssertionFailure(const std::string& condition,
                     const std::string& message = "");

    AssertionFailure(const AssertionFailure&);

    virtual ~AssertionFailure();

    const char* what() const noexcept;
    const std::string& condition() const noexcept { return condition_; }
    const std::string& message() const noexcept { return message_; }

private:
    const std::string condition_;
    const std::string message_;
};


class OSError : public std::exception, public Printable
{
public:
    OSError(const std::string& message, const std::string& description);
    OSError(const OSError&);
    virtual ~OSError();

    virtual const std::string& message() const { return message_; }
    virtual const std::string& description() const { return description_; }

    const char* what() const noexcept { return completeMessage_.c_str(); }
    virtual void PrettyPrint(Bytestream&, size_t indent = 0) const;

private:
    const std::string message_;
    const std::string description_;
    const std::string completeMessage_;
};



class UserError : public std::exception, public Printable
{
public:
    UserError(const std::string& message);
    UserError(const UserError&);
    virtual ~UserError();

    virtual const std::string& message() const { return message_; }
    const char* what() const noexcept { return message_.c_str(); }

    virtual void PrettyPrint(Bytestream&, size_t indent = 0) const override;

private:
    const std::string message_;
};



class ErrorReport;

class SourceCodeException
    : public std::exception, public HasSource, public Printable
{
public:
    virtual ~SourceCodeException();

    const std::string& message() const;
    virtual const char* what() const noexcept;

    virtual void PrettyPrint(Bytestream&, size_t indent = 0) const override;

protected:
    SourceCodeException(const std::string& message, const SourceRange&);
    SourceCodeException(const SourceCodeException&);

private:
    std::shared_ptr<ErrorReport> err_;
};


class SyntaxError : public SourceCodeException
{
public:
    SyntaxError(const std::string& message, const SourceRange&);
    SyntaxError(const SyntaxError&);
    virtual ~SyntaxError();
};

class SemanticException : public SourceCodeException
{
public:
    SemanticException(const std::string& message, const SourceRange&);
    SemanticException(const SemanticException&);
    virtual ~SemanticException();
};

}

#endif