135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
/*
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* Parsodus - A language agnostic parser generator
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* Copyright © 2016-2017 Thomas Avé, Robin Jadoul, Kobe Wullaert
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#ifndef CALC_AST_H
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#define CALC_AST_H
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#include <deque>
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#include <map>
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#include <memory>
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#include <string>
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namespace calc {
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class AST;
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using Variables = std::map<std::string, double>;
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using Functions = std::map<std::string, std::unique_ptr<AST>>;
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class AST {
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public:
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virtual double eval(const Variables&, const Functions&) const = 0;
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};
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class Number : public AST {
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public:
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Number(double d);
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double eval(const Variables&, const Functions&) const override;
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private:
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double m_val;
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};
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class Var : public AST {
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public:
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Var(std::string name);
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double eval(const Variables& ctx, const Functions&) const override;
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std::string getName() const;
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private:
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std::string m_name;
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};
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class Binop : public AST {
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public:
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Binop(std::unique_ptr<AST>&& left, std::string op, std::unique_ptr<AST>&& right);
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double eval(const Variables& ctx, const Functions&) const override;
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private:
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std::unique_ptr<AST> m_left;
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std::unique_ptr<AST> m_right;
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std::string m_op;
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};
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class Unop : public AST {
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public:
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Unop(std::string op, std::unique_ptr<AST>&& operand);
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double eval(const Variables&, const Functions&) const override;
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private:
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std::string m_op;
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std::unique_ptr<AST> m_operand;
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};
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class FormalParameters : public AST {
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public:
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double eval(const Variables&, const Functions&) const override;
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void push_back(std::unique_ptr<AST>&& arg);
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std::deque<std::unique_ptr<AST>>::const_iterator begin();
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std::deque<std::unique_ptr<AST>>::const_iterator end();
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private:
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std::deque<std::unique_ptr<AST>> m_args;
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};
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class FunctionArguments : public AST {
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public:
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double eval(const Variables&, const Functions&) const override;
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std::unique_ptr<AST>& operator[](std::size_t idx);
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void push_back(std::unique_ptr<AST>&& arg);
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std::size_t size() const;
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private:
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std::deque<std::unique_ptr<AST>> m_args;
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};
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class FunctionCall : public AST {
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public:
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FunctionCall(std::string name, std::unique_ptr<FunctionArguments>&& arguments);
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double eval(const Variables&, const Functions&) const override;
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private:
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std::string m_name;
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std::unique_ptr<FunctionArguments> m_arguments;
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};
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class Function : public AST {
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public:
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Function(std::deque<std::string> formalParams, std::unique_ptr<AST>&& body);
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double eval(const Variables&, const Functions&) const override;
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const std::deque<std::string>& getParams() const;
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private:
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std::deque<std::string> m_formalParams;
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std::unique_ptr<AST> m_body;
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};
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} /* calc */
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#endif //CALC_AST_H
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