/*
    QoreModuloEqualsOperatorNode.cpp

    Qore Programming Language

    Copyright (C) 2003 - 2021 Qore Technologies, s.r.o.

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
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    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.

    Note that the Qore library is released under a choice of three open-source
    licenses: MIT (as above), LGPL 2+, or GPL 2+; see README-LICENSE for more
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*/

#include <qore/Qore.h>

QoreString QoreModuloEqualsOperatorNode::op_str("%= operator expression");

int QoreModuloEqualsOperatorNode::parseInitImpl(QoreValue& val, QoreParseContext& parse_context) {
    return parseInitIntLValue(op_str.c_str(), parse_context);
}

QoreValue QoreModuloEqualsOperatorNode::evalImpl(bool& needs_deref, ExceptionSink* xsink) const {
    ValueEvalRefHolder new_right(right, xsink);
    if (*xsink)
        return QoreValue();
    int64 val = new_right->getAsBigInt();

    // get ptr to current value (lvalue is locked for the scope of the LValueHelper object)
    LValueHelper v(left, xsink);
    if (!v)
        return QoreValue();

    // do not try to execute %= 0 or a runtime exception will occur
    if (!val) {
        v.assign(0ll, "<%= operator>");
        return 0ll;
    }

    return v.modulaEqualsBigInt(val, "<%= operator>");
}
