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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- =============================================================================*/
- #if !defined(BOOST_SPIRIT_CALC8_COMPILER_HPP)
- #define BOOST_SPIRIT_CALC8_COMPILER_HPP
- #include "ast.hpp"
- #include "error_handler.hpp"
- #include <vector>
- #include <map>
- #include <boost/function.hpp>
- #include <boost/spirit/include/phoenix_core.hpp>
- #include <boost/spirit/include/phoenix_function.hpp>
- #include <boost/spirit/include/phoenix_operator.hpp>
- namespace client { namespace code_gen
- {
- ///////////////////////////////////////////////////////////////////////////
- // The Program
- ///////////////////////////////////////////////////////////////////////////
- struct program
- {
- void op(int a);
- void op(int a, int b);
- void op(int a, int b, int c);
- int& operator[](std::size_t i) { return code[i]; }
- int const& operator[](std::size_t i) const { return code[i]; }
- void clear() { code.clear(); variables.clear(); }
- std::size_t size() const { return code.size(); }
- std::vector<int> const& operator()() const { return code; }
- int nvars() const { return variables.size(); }
- int const* find_var(std::string const& name) const;
- void add_var(std::string const& name);
- void print_variables(std::vector<int> const& stack) const;
- void print_assembler() const;
- private:
- std::map<std::string, int> variables;
- std::vector<int> code;
- };
- ///////////////////////////////////////////////////////////////////////////
- // The Compiler
- ///////////////////////////////////////////////////////////////////////////
- struct compiler
- {
- typedef bool result_type;
- template <typename ErrorHandler>
- compiler(client::code_gen::program& program, ErrorHandler& error_handler_)
- : program(program)
- {
- using namespace boost::phoenix::arg_names;
- namespace phx = boost::phoenix;
- using boost::phoenix::function;
- error_handler = function<ErrorHandler>(error_handler_)(
- "Error! ", _2, phx::cref(error_handler_.iters)[_1]);
- }
- bool operator()(ast::nil) const { BOOST_ASSERT(0); return false; }
- bool operator()(unsigned int x) const;
- bool operator()(bool x) const;
- bool operator()(ast::variable const& x) const;
- bool operator()(ast::operation const& x) const;
- bool operator()(ast::unary const& x) const;
- bool operator()(ast::expression const& x) const;
- bool operator()(ast::assignment const& x) const;
- bool operator()(ast::variable_declaration const& x) const;
- bool operator()(ast::statement_list const& x) const;
- bool operator()(ast::statement const& x) const;
- bool operator()(ast::if_statement const& x) const;
- bool operator()(ast::while_statement const& x) const;
- bool start(ast::statement_list const& x) const;
- client::code_gen::program& program;
- boost::function<
- void(int tag, std::string const& what)>
- error_handler;
- };
- }}
- #endif
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