88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2014 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#if !defined(BOOST_SPIRIT_X3_CALC9_COMPILER_HPP)
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#define BOOST_SPIRIT_X3_CALC9_COMPILER_HPP
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#include "ast.hpp"
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#include "error_handler.hpp"
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#include <vector>
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#include <map>
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namespace client { namespace code_gen
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{
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///////////////////////////////////////////////////////////////////////////
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// The Program
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///////////////////////////////////////////////////////////////////////////
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struct program
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{
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void op(int a);
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void op(int a, int b);
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void op(int a, int b, int c);
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int& operator[](std::size_t i) { return code[i]; }
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int operator[](std::size_t i) const { return code[i]; }
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void clear() { code.clear(); variables.clear(); }
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std::size_t size() const { return code.size(); }
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std::vector<int> const& operator()() const { return code; }
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std::size_t nvars() const { return variables.size(); }
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int const* find_var(std::string const& name) const;
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void add_var(std::string const& name);
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void print_variables(std::vector<int> const& stack) const;
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void print_assembler() const;
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private:
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std::map<std::string, int> variables;
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std::vector<int> code;
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};
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////////////////////////////////////////////////////////////////////////////
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// The Compiler
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////////////////////////////////////////////////////////////////////////////
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struct compiler
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{
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typedef bool result_type;
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typedef std::function<
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void(x3::position_tagged, std::string const&)>
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error_handler_type;
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template <typename ErrorHandler>
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compiler(
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client::code_gen::program& program
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, ErrorHandler const& error_handler)
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: program(program)
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, error_handler(
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[&](x3::position_tagged pos, std::string const& msg)
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{ error_handler(pos, msg); }
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)
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{}
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bool operator()(ast::nil) const { BOOST_ASSERT(0); return false; }
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bool operator()(unsigned int x) const;
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bool operator()(bool x) const;
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bool operator()(ast::variable const& x) const;
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bool operator()(ast::operation const& x) const;
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bool operator()(ast::unary const& x) const;
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bool operator()(ast::expression const& x) const;
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bool operator()(ast::assignment const& x) const;
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bool operator()(ast::variable_declaration const& x) const;
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bool operator()(ast::statement_list const& x) const;
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bool operator()(ast::statement const& x) const;
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bool operator()(ast::if_statement const& x) const;
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bool operator()(ast::while_statement const& x) const;
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bool start(ast::statement_list const& x) const;
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client::code_gen::program& program;
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error_handler_type error_handler;
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};
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}}
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#endif
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