preprocessor/src/macro/Environment.hh

55 lines
2.2 KiB
C++

/*
* Copyright © 2019-2021 Dynare Team
*
* This file is part of Dynare.
*
* Dynare is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dynare 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Dynare. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef _ENVIRONMENT_HH
#define _ENVIRONMENT_HH
#include "ForwardDeclarationsAndEnums.hh"
#include <map>
#include <vector>
namespace macro
{
class Environment
{
private:
const Environment *parent{nullptr};
map<string, ExpressionPtr> variables;
map<string, tuple<FunctionPtr, ExpressionPtr>> functions;
public:
Environment() = default;
Environment(const Environment *parent_arg) : parent{parent_arg} { }
void define(VariablePtr var, ExpressionPtr value);
void define(FunctionPtr func, ExpressionPtr value);
ExpressionPtr getVariable(const string &name) const;
tuple<FunctionPtr, ExpressionPtr> getFunction(const string &name) const;
codes::BaseType getType(const string &name) const;
bool isVariableDefined(const string &name) const noexcept;
bool isFunctionDefined(const string &name) const noexcept;
inline bool isSymbolDefined(const string &name) const noexcept { return isVariableDefined(name) || isFunctionDefined(name); }
void print(ostream &output, const vector<string> &vars, int line = -1, bool save = false) const;
void printVariable(ostream &output, const string &name, int line, bool save) const;
void printFunction(ostream &output, const tuple<FunctionPtr, ExpressionPtr> &function, int line, bool save) const;
inline size_t size() const noexcept { return variables.size() + functions.size(); }
inline const Environment *getGlobalEnv() const noexcept { return parent == nullptr ? this : parent->getGlobalEnv(); }
};
}
#endif