/*
    QoreBinaryXorOperatorNode.cpp

    Qore Programming Language

    Copyright (C) 2003 - 2023 Qore Technologies, s.r.o.

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

    The above copyright notice or 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 OR NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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    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>
#include "qore/intern/qore_program_private.h"

QoreString QoreBinaryXorOperatorNode::op_str("^ (binary xor) operator expression");

QoreValue QoreBinaryXorOperatorNode::evalImpl(bool& needs_deref, ExceptionSink* xsink) const {
    ValueEvalRefHolder lh(left, xsink);
    if (*xsink) return QoreValue();
    ValueEvalRefHolder rh(right, xsink);
    if (*xsink) return QoreValue();

    return lh->getAsBigInt() ^ rh->getAsBigInt();
}

int QoreBinaryXorOperatorNode::parseInitImpl(QoreValue& val, QoreParseContext& parse_context) {
    // turn off "return value ignored" flags
    QoreParseContextFlagHelper fh(parse_context);
    fh.unsetFlags(PF_RETURN_VALUE_IGNORED);

    parse_context.typeInfo = nullptr;
    int err = parse_init_value(left, parse_context);
    const QoreTypeInfo* lti = parse_context.typeInfo;
    parse_context.typeInfo = nullptr;
    if (parse_init_value(right, parse_context) && !err) {
        err = -1;
    }

    // see if any of the arguments cannot be converted to an integer, if so generate a warning
    if (!QoreTypeInfo::canConvertToScalar(lti)) {
        if (!QoreTypeInfo::canConvertToScalar(parse_context.typeInfo)) {
            QoreStringNode* desc = new QoreStringNode("neither side of the binary xor (^) expression can be " \
                "converted to an integer (left hand side is ");
            QoreTypeInfo::getThisType(lti, *desc);
            desc->concat("; right hand side is ");
            QoreTypeInfo::getThisType(parse_context.typeInfo, *desc);
            desc->concat("), therefore the entire expression will always return a constant 0");
            qore_program_private::makeParseWarning(getProgram(), *loc, QP_WARN_INVALID_OPERATION, "INVALID-OPERATION",
                desc);
            if (!err) {
                err = -1;
            }
        } else {
            QoreStringNode* desc = new QoreStringNode("the left hand side of the binary xor (^) expression is ");
            QoreTypeInfo::getThisType(lti, *desc);
            desc->concat(", which cannot be converted to an integer, therefore the entire expression will always " \
                "return the integer value of the right hand side");
            qore_program_private::makeParseWarning(getProgram(), *loc, QP_WARN_INVALID_OPERATION, "INVALID-OPERATION",
                desc);
            if (!err) {
                err = -1;
            }
        }
    } else if (!QoreTypeInfo::canConvertToScalar(parse_context.typeInfo)) {
        QoreStringNode* desc = new QoreStringNode("the right hand side of the binary xor (^) expression is ");
        QoreTypeInfo::getThisType(parse_context.typeInfo, *desc);
        desc->concat(", which cannot be converted to an integer, therefore the entire expression will always " \
            "return the integer value of the left hand side");
        qore_program_private::makeParseWarning(getProgram(), *loc, QP_WARN_INVALID_OPERATION, "INVALID-OPERATION",
            desc);
        if (!err) {
            err = -1;
        }
    }

    // see if both arguments are constant values, then eval immediately or substitute this node with the result
    if (!err && left.isValue() && right.isValue()) {
        SimpleRefHolder<QoreBinaryXorOperatorNode> del(this);
        ParseExceptionSink xsink;
        ValueEvalRefHolder v(this, *xsink);
        assert(!**xsink);
        val = v.takeReferencedValue();
    }

    parse_context.typeInfo = bigIntTypeInfo;
    return err;
}
