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 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
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 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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 * This license is subject to the following condition:
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package com.oracle.truffle.regex;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.exception.AbstractTruffleException;
import com.oracle.truffle.api.interop.ExceptionType;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;

@ExportLibrary(InteropLibrary.class)
public final class RegexSyntaxException extends AbstractTruffleException {

    private static final String template = "Invalid regular expression: /%s/%s: %s";
    private static final String templateNoFlags = "Invalid regular expression: %s: %s";
    private static final String templatePosition = "Invalid regular expression: /%s/%s:%d: %s";

    private final String reason;
    private final RegexSource regexSrc;
    private final int position;

    public RegexSyntaxException(String msg) {
        super(msg);
        reason = msg;
        regexSrc = null;
        position = -1;
    }

    @TruffleBoundary
    public RegexSyntaxException(String pattern, String msg) {
        this(String.format(templateNoFlags, pattern, msg), msg, null);
    }

    @TruffleBoundary
    public RegexSyntaxException(RegexSource source, String msg) {
        this(String.format(template, source.getPattern(), source.getFlags(), msg), msg, source);
    }

    @TruffleBoundary
    public RegexSyntaxException(RegexSource source, String msg, int position) {
        this(String.format(templatePosition, source.getPattern(), source.getFlags(), position, msg), msg, source, position);
    }

    private RegexSyntaxException(String exceptionMsg, String reason, RegexSource regexSrc) {
        this(exceptionMsg, reason, regexSrc, -1);
    }

    private RegexSyntaxException(String exceptionMsg, String reason, RegexSource regexSrc, int position) {
        super(exceptionMsg);
        this.reason = reason;
        this.regexSrc = regexSrc;
        this.position = position;
    }

    @ExportMessage
    @SuppressWarnings("static-method")
    ExceptionType getExceptionType() {
        return ExceptionType.PARSE_ERROR;
    }

    public String getReason() {
        return reason;
    }

    public RegexSource getRegex() {
        return regexSrc;
    }

    public Integer getPosition() {
        return position;
    }

    private static final long serialVersionUID = 1L;

}