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/*
 * Copyright (c) 2019, 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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
 * freely licensable by each licensor hereunder covering either (i) the
 * 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
 *
 * (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
 * is contributed by such licensors),
 *
 * 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
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 */

package com.oracle.graal.python.pegparser.tokenizer;

public final class SourceRange {
    public static final SourceRange ARTIFICIAL_RANGE = new SourceRange(1, 0, 1, 0);

    public final int startLine;
    public final int startColumn;
    public final int endLine;
    public final int endColumn;

    public SourceRange(int startLine, int startColumn, int endLine, int endColumn) {
        this.startLine = startLine;
        this.startColumn = startColumn;
        this.endLine = endLine;
        this.endColumn = endColumn;
    }

    public SourceRange withEnd(SourceRange end) {
        return withEnd(end.endLine, end.endColumn);
    }

    public SourceRange withEnd(int newEndLine, int newEndColumn) {
        return new SourceRange(startLine, startColumn, newEndLine, newEndColumn);
    }

    public SourceRange shiftStartRight(int columns) {
        assert columns >= 0;
        if (columns == 0) {
            return this;
        }
        return new SourceRange(startLine, startColumn + columns, endLine, endColumn);
    }

    public SourceRange shiftEndRight(int columns) {
        assert columns >= 0;
        if (columns == 0) {
            return this;
        }
        return new SourceRange(startLine, startColumn, endLine, endColumn + columns);
    }
}