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/*
* Copyright (c) 2003-2017, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @addtogroup expr
*/
/**
* @file predicate.h
* @author John Wiegley
*
* @ingroup expr
*/
#ifndef _PREDICATE_H
#define _PREDICATE_H
#include "expr.h"
#include "commodity.h"
#include "annotate.h"
namespace ledger {
class predicate_t : public expr_t
{
public:
keep_details_t what_to_keep;
predicate_t(const keep_details_t& _what_to_keep = keep_details_t())
: what_to_keep(_what_to_keep) {
TRACE_CTOR(predicate_t, "");
}
predicate_t(const predicate_t& other)
: expr_t(other), what_to_keep(other.what_to_keep) {
TRACE_CTOR(predicate_t, "copy");
}
predicate_t(ptr_op_t _ptr,
const keep_details_t& _what_to_keep,
scope_t * _context = NULL)
: expr_t(_ptr, _context), what_to_keep(_what_to_keep) {
TRACE_CTOR(predicate_t, "ptr_op_t, keep_details_t, scope_t *");
}
predicate_t(const string& str,
const keep_details_t& _what_to_keep,
const parse_flags_t& flags = PARSE_DEFAULT)
: expr_t(str, flags), what_to_keep(_what_to_keep) {
TRACE_CTOR(predicate_t, "string, keep_details_t, parse_flags_t");
}
predicate_t(std::istream& in,
const keep_details_t& _what_to_keep,
const parse_flags_t& flags = PARSE_DEFAULT)
: expr_t(in, flags), what_to_keep(_what_to_keep) {
TRACE_CTOR(predicate_t, "std::istream&, keep_details_t, parse_flags_t");
}
virtual ~predicate_t() {
TRACE_DTOR(predicate_t);
}
virtual value_t real_calc(scope_t& scope) {
return (*this ?
expr_t::real_calc(scope)
.strip_annotations(what_to_keep)
.to_boolean() :
true);
}
};
} // namespace ledger
#endif // _PREDICATE_H
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