D4FunctionEvaluator.h
// -*- mode: c++; c-basic-offset:4 -*-
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
// Copyright (c) 2014 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
#ifndef D4_FUNCTION_DRIVER_H_
#define D4_FUNCTION_DRIVER_H_
#include <string>
#include <vector>
#include <stack>
namespace libdap {
class location;
class BaseType;
class Array;
class ServerFunctionsList;
class DMR;
class D4Dimension;
class D4RValue;
class D4RValueList;
class D4FunctionEvaluator
{
bool d_trace_scanning;
bool d_trace_parsing;
std::string d_expr;
DMR *d_dmr;
ServerFunctionsList *d_sf_list;
D4RValueList *d_result;
std::stack<BaseType*> d_basetype_stack;
unsigned long long d_arg_length_hint;
// d_expr should be set by parse! Its value is used by the parser right before
// the actual parsing operation starts. jhrg 11/26/13
std::string *expression()
{
return &d_expr;
}
void push_basetype(BaseType *btp)
{
d_basetype_stack.push(btp);
}
BaseType *top_basetype() const
{
return d_basetype_stack.empty() ? 0 : d_basetype_stack.top();
}
void pop_basetype()
{
d_basetype_stack.pop();
}
D4RValue *build_rvalue(const std::string &id);
friend class D4FunctionParser;
public:
D4FunctionEvaluator() :
d_trace_scanning(false), d_trace_parsing(false), d_expr(""), d_dmr(0), d_sf_list(0), d_result(0), d_arg_length_hint(
0)
{
}
D4FunctionEvaluator(DMR *dmr, ServerFunctionsList *sf_list) :
d_trace_scanning(false), d_trace_parsing(false), d_expr(""), d_dmr(dmr), d_sf_list(sf_list), d_result(0), d_arg_length_hint(
0)
{
}
virtual ~D4FunctionEvaluator()
{
}
bool parse(const std::string &expr);
bool trace_scanning() const
{
return d_trace_scanning;
}
void set_trace_scanning(bool ts)
{
d_trace_scanning = ts;
}
bool trace_parsing() const
{
return d_trace_parsing;
}
void set_trace_parsing(bool tp)
{
d_trace_parsing = tp;
}
D4RValueList *result() const
{
return d_result;
}
void set_result(D4RValueList *rv_list)
{
d_result = rv_list;
}
void eval(DMR *dmr);
unsigned long long get_arg_length_hint() const
{
return d_arg_length_hint;
}
void set_arg_length_hint(unsigned long long alh)
{
d_arg_length_hint = alh;
}
DMR *dmr() const
{
return d_dmr;
}
void set_dmr(DMR *dmr)
{
d_dmr = dmr;
}
ServerFunctionsList *sf_list() const
{
return d_sf_list;
}
void set_sf_list(ServerFunctionsList *sf_list)
{
d_sf_list = sf_list;
}
template<typename t> std::vector<t> *init_arg_list(t val);
void error(const libdap::location &l, const std::string &m);
};
} /* namespace libdap */
#endif /* D4_FUNCTION_DRIVER_H_ */
libdap::BaseType
The basic data type for the DODS DAP types.
Definition BaseType.h:120
libdap::D4FunctionEvaluator
Definition D4FunctionEvaluator.h:49
libdap::D4FunctionEvaluator::eval
void eval(DMR *dmr)
Definition D4FunctionEvaluator.cc:109
libdap::D4FunctionEvaluator::parse
bool parse(const std::string &expr)
Definition D4FunctionEvaluator.cc:66
libdap::D4FunctionEvaluator::result
D4RValueList * result() const
Definition D4FunctionEvaluator.h:127
libdap::D4RValueList
Definition D4RValue.h:45
libdap::D4RValue
Definition D4RValue.h:86
libdap::DMR
Definition DMR.h:58
libdap::ServerFunctionsList
Definition ServerFunctionsList.h:46
libdap
top level DAP object to house generic methods
Definition AlarmHandler.h:36