params.h

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/* -*- mode: c++; indent-tabs-mode: nil -*- */
/*
    params.h

    Qore Programming Language

    Copyright (C) 2003 - 2018 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
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    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
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    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
    information.
*/

#ifndef _QORE_PARAMS_H

#define _QORE_PARAMS_H

#include <qore/AbstractQoreNode.h>


static inline unsigned num_args(const QoreListNode* n) {
   return n ? (unsigned)n->size() : 0;
}


static inline unsigned num_params(const QoreListNode* n) {
   return n ? (unsigned)n->size() : 0;
}


static inline const ReferenceNode* test_reference_param(const QoreListNode* n, qore_size_t i) {
    if (!n) return nullptr;
    QoreValue p = n->retrieveEntry(i);
    // the following is faster than a dynamic_cast
    return p.getType() == NT_REFERENCE ? p.get<const ReferenceNode>() : nullptr;
}


static inline QoreValue get_param_value(const QoreListNode* n, qore_size_t i) {
    if (!n)
        return QoreValue();
    return n->retrieveEntry(i);
}

template <typename T>
static inline T* get_hard_value_or_nothing_param(const QoreListNode* n, qore_size_t i) {
    assert(n);
    return n->retrieveEntry(i).get<T>();
}

static QoreValue get_hard_value_param(const QoreListNode* n, qore_size_t i) {
    assert(n);
    return n->retrieveEntry(i);
}

#define HARD_QORE_VALUE_OR_NOTHING_PARAM(name, Type, list, i) Type* name = get_hard_value_or_nothing_param<Type>(list, i)

#define HARD_QORE_VALUE_PARAM(name, Type, list, i) Type* name = get_hard_value_param(list, i).get<Type>()

#define HARD_QORE_VALUE_INT(list, i) get_hard_value_param(list, i).getAsBigInt()

#define HARD_QORE_VALUE_FLOAT(list, i) get_hard_value_param(list, i).getAsFloat()

#define HARD_QORE_VALUE_NUMBER(list, i) get_hard_value_param(list, i).get<const QoreNumberNode>()

#define HARD_QORE_VALUE_BOOL(list, i) get_hard_value_param(list, i).getAsBool()

#define HARD_QORE_VALUE_STRING(list, i) get_hard_value_param(list, i).get<const QoreStringNode>()

#define HARD_QORE_VALUE_DATE(list, i) get_hard_value_param(list, i).get<const DateTimeNode>()

#define HARD_QORE_VALUE_BINARY(list, i) get_hard_value_param(list, i).get<const BinaryNode>()

#define HARD_QORE_VALUE_LIST(list, i) get_hard_value_param(list, i).get<const QoreListNode>()

#define HARD_QORE_VALUE_HASH(list, i) get_hard_value_param(list, i).get<const QoreHashNode>()

#define HARD_QORE_VALUE_REF(list, i) get_hard_value_param(list, i).get<const ReferenceNode>()

#define HARD_QORE_VALUE_OBJECT(list, i) const_cast<QoreObject*>(get_hard_value_param(list, i).get<const QoreObject>())

#define HARD_QORE_VALUE_OBJ_DATA(vname, Type, list, i, cid, dname, cname, xsink) HARD_QORE_VALUE_PARAM(obj_##vname, const QoreObject, list, i); Type* vname = reinterpret_cast<Type*>(obj_##vname->getReferencedPrivateData(cid, xsink)); if (!vname && !*xsink) xsink->raiseException("OBJECT-ALREADY-DELETED", "cannot complete call setup to %s() because parameter %d (<class %s>) has already been deleted", cname, i + 1, dname)

#define TAKE_HARD_QORE_VALUE_OBJ_DATA(vname, Type, list, i, cid, dname, cname, xsink) HARD_QORE_VALUE_PARAM(obj_##vname, const QoreObject, list, i); Type* vname = reinterpret_cast<Type*>(const_cast<QoreObject*>(obj_##vname)->getAndClearPrivateData(cid, xsink)); if (!vname && !*xsink) xsink->raiseException("OBJECT-ALREADY-DELETED", "cannot complete call setup to %s() because parameter %d (<class %s>) has already been deleted", cname, i + 1, dname); else if (vname) const_cast<QoreObject*>(obj_##vname)->doDelete(xsink)

#define HARD_QORE_VALUE_OBJ_OR_NOTHING_DATA(vname, Type, list, i, cid, xsink) HARD_QORE_VALUE_OR_NOTHING_PARAM(obj_##vname, const QoreObject, list, i); Type* vname = obj_##vname ? reinterpret_cast<Type*>(obj_##vname->getReferencedPrivateData(cid, xsink)) : 0;

static inline const QoreEncoding* get_value_encoding_param(const QoreListNode* n, qore_size_t i, const QoreEncoding* def = QCS_DEFAULT) {
    const QoreStringNode* str = HARD_QORE_VALUE_STRING(n, i);
    return str ? QEM.findCreate(str) : def;
}

static inline const QoreEncoding* get_hard_qore_value_encoding_param(const QoreListNode* n, qore_size_t i) {
    HARD_QORE_VALUE_PARAM(str, const QoreStringNode, n, i);
    return QEM.findCreate(str);
}

#endif