| 1 | /*============================================================================= |
|---|---|
| 2 | Copyright (c) 2001-2011 Joel de Guzman |
| 3 | |
| 4 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 6 | =============================================================================*/ |
| 7 | #if !defined(BOOST_SPIRIT_CALC7_COMPILER_HPP) |
| 8 | #define BOOST_SPIRIT_CALC7_COMPILER_HPP |
| 9 | |
| 10 | #include "ast.hpp" |
| 11 | #include "error_handler.hpp" |
| 12 | #include <vector> |
| 13 | #include <map> |
| 14 | #include <boost/function.hpp> |
| 15 | #include <boost/phoenix/core.hpp> |
| 16 | #include <boost/phoenix/function.hpp> |
| 17 | #include <boost/phoenix/operator.hpp> |
| 18 | |
| 19 | namespace client { namespace code_gen |
| 20 | { |
| 21 | /////////////////////////////////////////////////////////////////////////// |
| 22 | // The Program |
| 23 | /////////////////////////////////////////////////////////////////////////// |
| 24 | struct program |
| 25 | { |
| 26 | void op(int a); |
| 27 | void op(int a, int b); |
| 28 | void op(int a, int b, int c); |
| 29 | |
| 30 | int& operator[](std::size_t i) { return code[i]; } |
| 31 | int const& operator[](std::size_t i) const { return code[i]; } |
| 32 | void clear() { code.clear(); variables.clear(); } |
| 33 | std::vector<int> const& operator()() const { return code; } |
| 34 | |
| 35 | int nvars() const { return variables.size(); } |
| 36 | int const* find_var(std::string const& name) const; |
| 37 | void add_var(std::string const& name); |
| 38 | |
| 39 | void print_variables(std::vector<int> const& stack) const; |
| 40 | void print_assembler() const; |
| 41 | |
| 42 | private: |
| 43 | |
| 44 | std::map<std::string, int> variables; |
| 45 | std::vector<int> code; |
| 46 | }; |
| 47 | |
| 48 | /////////////////////////////////////////////////////////////////////////// |
| 49 | // The Compiler |
| 50 | /////////////////////////////////////////////////////////////////////////// |
| 51 | struct compiler |
| 52 | { |
| 53 | typedef bool result_type; |
| 54 | |
| 55 | template <typename ErrorHandler> |
| 56 | compiler(client::code_gen::program& program, ErrorHandler& error_handler_) |
| 57 | : program(program) |
| 58 | { |
| 59 | using namespace boost::phoenix::arg_names; |
| 60 | namespace phx = boost::phoenix; |
| 61 | using boost::phoenix::function; |
| 62 | |
| 63 | error_handler = function<ErrorHandler>(error_handler_)( |
| 64 | "Error! ", _2, phx::cref(error_handler_.iters)[_1]); |
| 65 | } |
| 66 | |
| 67 | bool operator()(ast::nil) const { BOOST_ASSERT(0); return false; } |
| 68 | bool operator()(unsigned int x) const; |
| 69 | bool operator()(ast::variable const& x) const; |
| 70 | bool operator()(ast::operation const& x) const; |
| 71 | bool operator()(ast::signed_ const& x) const; |
| 72 | bool operator()(ast::expression const& x) const; |
| 73 | bool operator()(ast::assignment const& x) const; |
| 74 | bool operator()(ast::variable_declaration const& x) const; |
| 75 | bool operator()(ast::statement_list const& x) const; |
| 76 | |
| 77 | client::code_gen::program& program; |
| 78 | |
| 79 | boost::function< |
| 80 | void(int tag, std::string const& what)> |
| 81 | error_handler; |
| 82 | }; |
| 83 | }} |
| 84 | |
| 85 | #endif |
| 86 |