590 lines
24 KiB
C++
590 lines
24 KiB
C++
// This file is distributed under the BSD License.
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// See "license.txt" for details.
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// Copyright 2009-2012, Jonathan Turner (jonathan@emptycrate.com)
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// Copyright 2009-2016, Jason Turner (jason@emptycrate.com)
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// http://www.chaiscript.com
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// This is an open source non-commercial project. Dear PVS-Studio, please check it.
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// PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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#ifndef CHAISCRIPT_BOOTSTRAP_HPP_
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#define CHAISCRIPT_BOOTSTRAP_HPP_
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#include "../utility/utility.hpp"
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#include "register_function.hpp"
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namespace chaiscript
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{
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/// \brief Classes and functions useful for bootstrapping of ChaiScript and adding of new types
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namespace bootstrap
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{
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template<typename T, typename = typename std::enable_if<std::is_array<T>::value>::type >
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void array(const std::string &type, Module& m)
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{
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typedef typename std::remove_extent<T>::type ReturnType;
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const auto extent = std::extent<T>::value;
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m.add(user_type<T>(), type);
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m.add(fun(
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[extent](T& t, size_t index)->ReturnType &{
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if (extent > 0 && index >= extent) {
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throw std::range_error("Array index out of range. Received: " + std::to_string(index) + " expected < " + std::to_string(extent));
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} else {
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return t[index];
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}
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}
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), "[]"
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);
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m.add(fun(
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[extent](const T &t, size_t index)->const ReturnType &{
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if (extent > 0 && index >= extent) {
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throw std::range_error("Array index out of range. Received: " + std::to_string(index) + " expected < " + std::to_string(extent));
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} else {
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return t[index];
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}
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}
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), "[]"
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);
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m.add(fun(
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[extent](const T &) {
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return extent;
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}), "size");
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}
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/// \brief Adds a copy constructor for the given type to the given Model
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/// \param[in] type The name of the type. The copy constructor will be named "type".
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/// \param[in,out] m The Module to add the copy constructor to
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/// \tparam T The type to add a copy constructor for
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/// \returns The passed in Module
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template<typename T>
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void copy_constructor(const std::string &type, Module& m)
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{
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m.add(constructor<T (const T &)>(), type);
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}
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/// \brief Add all comparison operators for the templated type. Used during bootstrap, also available to users.
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/// \tparam T Type to create comparison operators for
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/// \param[in,out] m module to add comparison operators to
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/// \returns the passed in Module.
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template<typename T>
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void opers_comparison(Module& m)
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{
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operators::equal<T>(m);
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operators::greater_than<T>(m);
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operators::greater_than_equal<T>(m);
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operators::less_than<T>(m);
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operators::less_than_equal<T>(m);
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operators::not_equal<T>(m);
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}
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/// \brief Adds default and copy constructors for the given type
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/// \param[in] type The name of the type to add the constructors for.
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/// \param[in,out] m The Module to add the basic constructors to
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/// \tparam T Type to generate basic constructors for
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/// \returns The passed in Module
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/// \sa copy_constructor
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/// \sa constructor
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template<typename T>
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void basic_constructors(const std::string &type, Module& m)
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{
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m.add(constructor<T ()>(), type);
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copy_constructor<T>(type, m);
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}
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/// \brief Adds a constructor for a POD type
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/// \tparam T The type to add the constructor for
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/// \param[in] type The name of the type
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/// \param[in,out] m The Module to add the constructor to
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template<typename T>
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void construct_pod(const std::string &type, Module& m)
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{
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m.add(fun([](const Boxed_Number &bn){ return bn.get_as<T>(); }), type);
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}
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/// Internal function for converting from a string to a value
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/// uses ostream operator >> to perform the conversion
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template<typename Input>
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auto parse_string(const std::string &i)
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-> typename std::enable_if<
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!std::is_same<Input, wchar_t>::value
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&& !std::is_same<Input, char16_t>::value
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&& !std::is_same<Input, char32_t>::value,
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Input>::type
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{
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std::stringstream ss(i);
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Input t;
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ss >> t;
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return t;
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}
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template<typename Input>
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auto parse_string(const std::string &)
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-> typename std::enable_if<
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std::is_same<Input, wchar_t>::value
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|| std::is_same<Input, char16_t>::value
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|| std::is_same<Input, char32_t>::value,
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Input>::type
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{
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throw std::runtime_error("Parsing of wide characters is not yet supported");
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}
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/// Add all common functions for a POD type. All operators, and
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/// common conversions
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template<typename T>
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void bootstrap_pod_type(const std::string &name, Module& m)
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{
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m.add(user_type<T>(), name);
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m.add(constructor<T()>(), name);
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construct_pod<T>(name, m);
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m.add(fun(&parse_string<T>), "to_" + name);
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}
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/// "clone" function for a shared_ptr type. This is used in the case
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/// where you do not want to make a deep copy of an object during cloning
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/// but want to instead maintain the shared_ptr. It is needed internally
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/// for handling of Proxy_Function object (that is,
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/// function variables.
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template<typename Type>
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auto shared_ptr_clone(const std::shared_ptr<Type> &p)
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{
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return p;
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}
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/// Specific version of shared_ptr_clone just for Proxy_Functions
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template<typename Type>
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std::shared_ptr<typename std::remove_const<Type>::type> shared_ptr_unconst_clone(const std::shared_ptr<typename std::add_const<Type>::type> &p)
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{
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return std::const_pointer_cast<typename std::remove_const<Type>::type>(p);
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}
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/// Assignment function for shared_ptr objects, does not perform a copy of the
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/// object pointed to, instead maintains the shared_ptr concept.
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/// Similar to shared_ptr_clone. Used for Proxy_Function.
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template<typename Type>
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Boxed_Value ptr_assign(Boxed_Value lhs, const std::shared_ptr<Type> &rhs)
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{
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if (lhs.is_undef()
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|| (!lhs.get_type_info().is_const() && lhs.get_type_info().bare_equal(chaiscript::detail::Get_Type_Info<Type>::get())))
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{
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lhs.assign(Boxed_Value(rhs));
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return lhs;
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} else {
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throw exception::bad_boxed_cast("type mismatch in pointer assignment");
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}
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}
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/// Class consisting of only static functions. All default bootstrapping occurs
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/// from this class.
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class Bootstrap
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{
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private:
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/// Function allowing for assignment of an unknown type to any other value
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static Boxed_Value unknown_assign(Boxed_Value lhs, Boxed_Value rhs)
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{
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if (lhs.is_undef())
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{
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return (lhs.assign(rhs));
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} else {
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throw exception::bad_boxed_cast("boxed_value has a set type already");
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}
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}
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static void print(const std::string &s)
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{
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fwrite(s.c_str(), 1, s.size(), stdout);
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}
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static void println(const std::string &s)
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{
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puts(s.c_str());
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}
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/// Add all arithmetic operators for PODs
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static void opers_arithmetic_pod(Module& m)
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{
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m.add(fun(&Boxed_Number::equals), "==");
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m.add(fun(&Boxed_Number::less_than), "<");
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m.add(fun(&Boxed_Number::greater_than), ">");
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m.add(fun(&Boxed_Number::greater_than_equal), ">=");
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m.add(fun(&Boxed_Number::less_than_equal), "<=");
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m.add(fun(&Boxed_Number::not_equal), "!=");
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m.add(fun(&Boxed_Number::pre_decrement), "--");
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m.add(fun(&Boxed_Number::pre_increment), "++");
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m.add(fun(&Boxed_Number::sum), "+");
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m.add(fun(&Boxed_Number::unary_plus), "+");
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m.add(fun(&Boxed_Number::unary_minus), "-");
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m.add(fun(&Boxed_Number::difference), "-");
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m.add(fun(&Boxed_Number::assign_bitwise_and), "&=");
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m.add(fun(&Boxed_Number::assign), "=");
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m.add(fun(&Boxed_Number::assign_bitwise_or), "|=");
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m.add(fun(&Boxed_Number::assign_bitwise_xor), "^=");
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m.add(fun(&Boxed_Number::assign_remainder), "%=");
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m.add(fun(&Boxed_Number::assign_shift_left), "<<=");
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m.add(fun(&Boxed_Number::assign_shift_right), ">>=");
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m.add(fun(&Boxed_Number::bitwise_and), "&");
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m.add(fun(&Boxed_Number::bitwise_complement), "~");
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m.add(fun(&Boxed_Number::bitwise_xor), "^");
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m.add(fun(&Boxed_Number::bitwise_or), "|");
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m.add(fun(&Boxed_Number::assign_product), "*=");
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m.add(fun(&Boxed_Number::assign_quotient), "/=");
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m.add(fun(&Boxed_Number::assign_sum), "+=");
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m.add(fun(&Boxed_Number::assign_difference), "-=");
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m.add(fun(&Boxed_Number::quotient), "/");
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m.add(fun(&Boxed_Number::shift_left), "<<");
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m.add(fun(&Boxed_Number::product), "*");
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m.add(fun(&Boxed_Number::remainder), "%");
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m.add(fun(&Boxed_Number::shift_right), ">>");
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}
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/// Create a bound function object. The first param is the function to bind
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/// the remaining parameters are the args to bind into the result
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static Boxed_Value bind_function(const std::vector<Boxed_Value> ¶ms)
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{
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if (params.empty()) {
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throw exception::arity_error(0, 1);
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}
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Const_Proxy_Function f = boxed_cast<Const_Proxy_Function>(params[0]);
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if (f->get_arity() != -1 && size_t(f->get_arity()) != params.size() - 1)
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{
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throw exception::arity_error(static_cast<int>(params.size()), f->get_arity());
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}
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return Boxed_Value(Const_Proxy_Function(std::make_shared<dispatch::Bound_Function>(std::move(f),
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std::vector<Boxed_Value>(params.begin() + 1, params.end()))));
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}
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static bool has_guard(const Const_Proxy_Function &t_pf)
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{
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auto pf = std::dynamic_pointer_cast<const dispatch::Dynamic_Proxy_Function>(t_pf);
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return pf && pf->get_guard();
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}
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static Const_Proxy_Function get_guard(const Const_Proxy_Function &t_pf)
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{
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const auto pf = std::dynamic_pointer_cast<const dispatch::Dynamic_Proxy_Function>(t_pf);
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if (pf && pf->get_guard())
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{
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return pf->get_guard();
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} else {
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throw std::runtime_error("Function does not have a guard");
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}
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}
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template<typename FunctionType>
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static std::vector<Boxed_Value> do_return_boxed_value_vector(FunctionType f,
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const dispatch::Proxy_Function_Base *b)
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{
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auto v = (b->*f)();
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std::vector<Boxed_Value> vbv;
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for (const auto &o: v)
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{
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vbv.push_back(const_var(o));
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}
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return vbv;
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}
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static bool has_parse_tree(const chaiscript::Const_Proxy_Function &t_pf)
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{
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const auto pf = std::dynamic_pointer_cast<const chaiscript::dispatch::Dynamic_Proxy_Function>(t_pf);
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return pf && pf->get_parse_tree();
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}
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static chaiscript::AST_NodePtr get_parse_tree(const chaiscript::Const_Proxy_Function &t_pf)
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{
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const auto pf = std::dynamic_pointer_cast<const chaiscript::dispatch::Dynamic_Proxy_Function>(t_pf);
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if (pf && pf->get_parse_tree())
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{
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return pf->get_parse_tree();
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} else {
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throw std::runtime_error("Function does not have a parse tree");
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}
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}
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template<typename Function>
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static auto return_boxed_value_vector(const Function &f)
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{
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return [f](const dispatch::Proxy_Function_Base *b) {
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return do_return_boxed_value_vector(f, b);
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};
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}
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public:
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/// \brief perform all common bootstrap functions for std::string, void and POD types
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/// \param[in,out] m Module to add bootstrapped functions to
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/// \returns passed in Module
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static void bootstrap(Module& m)
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{
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m.add(user_type<void>(), "void");
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m.add(user_type<bool>(), "bool");
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m.add(user_type<Boxed_Value>(), "Object");
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m.add(user_type<Boxed_Number>(), "Number");
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m.add(user_type<Proxy_Function>(), "Function");
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m.add(user_type<dispatch::Assignable_Proxy_Function>(), "Assignable_Function");
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m.add(user_type<std::exception>(), "exception");
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m.add(fun(&dispatch::Proxy_Function_Base::get_arity), "get_arity");
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m.add(fun(&dispatch::Proxy_Function_Base::operator==), "==");
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m.add(fun(return_boxed_value_vector(&dispatch::Proxy_Function_Base::get_param_types)), "get_param_types");
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m.add(fun(return_boxed_value_vector(&dispatch::Proxy_Function_Base::get_contained_functions)), "get_contained_functions");
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m.add(fun([](const std::exception &e){ return std::string(e.what()); }), "what");
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m.add(user_type<std::out_of_range>(), "out_of_range");
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m.add(user_type<std::logic_error>(), "logic_error");
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m.add(chaiscript::base_class<std::exception, std::logic_error>());
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m.add(chaiscript::base_class<std::logic_error, std::out_of_range>());
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m.add(chaiscript::base_class<std::exception, std::out_of_range>());
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m.add(user_type<std::runtime_error>(), "runtime_error");
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m.add(chaiscript::base_class<std::exception, std::runtime_error>());
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m.add(constructor<std::runtime_error (const std::string &)>(), "runtime_error");
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m.add(user_type<dispatch::Dynamic_Object>(), "Dynamic_Object");
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m.add(constructor<dispatch::Dynamic_Object (const std::string &)>(), "Dynamic_Object");
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m.add(constructor<dispatch::Dynamic_Object ()>(), "Dynamic_Object");
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m.add(fun(&dispatch::Dynamic_Object::get_type_name), "get_type_name");
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m.add(fun(&dispatch::Dynamic_Object::get_attrs), "get_attrs");
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m.add(fun(&dispatch::Dynamic_Object::set_explicit), "set_explicit");
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m.add(fun(&dispatch::Dynamic_Object::is_explicit), "is_explicit");
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m.add(fun(&dispatch::Dynamic_Object::has_attr), "has_attr");
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m.add(fun(static_cast<Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &)>(&dispatch::Dynamic_Object::get_attr)), "get_attr");
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m.add(fun(static_cast<const Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &) const>(&dispatch::Dynamic_Object::get_attr)), "get_attr");
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m.add(fun(static_cast<Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &)>(&dispatch::Dynamic_Object::method_missing)), "method_missing");
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m.add(fun(static_cast<const Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &) const>(&dispatch::Dynamic_Object::method_missing)), "method_missing");
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m.add(fun(static_cast<Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &)>(&dispatch::Dynamic_Object::get_attr)), "[]");
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m.add(fun(static_cast<const Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &) const>(&dispatch::Dynamic_Object::get_attr)), "[]");
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m.eval(R"chaiscript(
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def Dynamic_Object::clone() {
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auto &new_o = Dynamic_Object(this.get_type_name());
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for_each(this.get_attrs(), fun[new_o](x) { new_o.get_attr(x.first) = x.second; } );
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new_o;
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}
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def `=`(Dynamic_Object lhs, Dynamic_Object rhs) : lhs.get_type_name() == rhs.get_type_name()
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{
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for_each(rhs.get_attrs(), fun[lhs](x) { lhs.get_attr(x.first) = clone(x.second); } );
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}
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def `!=`(Dynamic_Object lhs, Dynamic_Object rhs) : lhs.get_type_name() == rhs.get_type_name()
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{
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var rhs_attrs := rhs.get_attrs();
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var lhs_attrs := lhs.get_attrs();
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if (rhs_attrs.size() != lhs_attrs.size()) {
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true;
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} else {
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return any_of(rhs_attrs, fun[lhs](x) { !lhs.has_attr(x.first) || lhs.get_attr(x.first) != x.second; } );
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}
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}
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def `==`(Dynamic_Object lhs, Dynamic_Object rhs) : lhs.get_type_name() == rhs.get_type_name()
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{
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var rhs_attrs := rhs.get_attrs();
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var lhs_attrs := lhs.get_attrs();
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if (rhs_attrs.size() != lhs_attrs.size()) {
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false;
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} else {
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return all_of(rhs_attrs, fun[lhs](x) { lhs.has_attr(x.first) && lhs.get_attr(x.first) == x.second; } );
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}
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}
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)chaiscript");
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m.add(fun(&has_guard), "has_guard");
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m.add(fun(&get_guard), "get_guard");
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m.add(fun(&Boxed_Value::is_undef), "is_var_undef");
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m.add(fun(&Boxed_Value::is_null), "is_var_null");
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m.add(fun(&Boxed_Value::is_const), "is_var_const");
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m.add(fun(&Boxed_Value::is_ref), "is_var_reference");
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m.add(fun(&Boxed_Value::is_pointer), "is_var_pointer");
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m.add(fun(&Boxed_Value::is_return_value), "is_var_return_value");
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m.add(fun(&Boxed_Value::reset_return_value), "reset_var_return_value");
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m.add(fun(&Boxed_Value::is_type), "is_type");
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m.add(fun(&Boxed_Value::get_attr), "get_var_attr");
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m.add(fun(&Boxed_Value::copy_attrs), "copy_var_attrs");
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m.add(fun(&Boxed_Value::clone_attrs), "clone_var_attrs");
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m.add(fun(&Boxed_Value::get_type_info), "get_type_info");
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m.add(user_type<Type_Info>(), "Type_Info");
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m.add(constructor<Type_Info (const Type_Info &)>(), "Type_Info");
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operators::equal<Type_Info>(m);
|
|
|
|
m.add(fun(&Type_Info::is_const), "is_type_const");
|
|
m.add(fun(&Type_Info::is_reference), "is_type_reference");
|
|
m.add(fun(&Type_Info::is_void), "is_type_void");
|
|
m.add(fun(&Type_Info::is_undef), "is_type_undef");
|
|
m.add(fun(&Type_Info::is_pointer), "is_type_pointer");
|
|
m.add(fun(&Type_Info::is_arithmetic), "is_type_arithmetic");
|
|
m.add(fun(&Type_Info::name), "cpp_name");
|
|
m.add(fun(&Type_Info::bare_name), "cpp_bare_name");
|
|
m.add(fun(&Type_Info::bare_equal), "bare_equal");
|
|
|
|
|
|
basic_constructors<bool>("bool", m);
|
|
operators::assign<bool>(m);
|
|
operators::equal<bool>(m);
|
|
operators::not_equal<bool>(m);
|
|
|
|
m.add(fun([](const std::string &s) { return s; }), "to_string");
|
|
m.add(fun([](const bool b) { return std::string(b?"true":"false"); }), "to_string");
|
|
m.add(fun(&unknown_assign), "=");
|
|
m.add(fun([](const Boxed_Value &bv) { throw bv; }), "throw");
|
|
|
|
m.add(fun([](const char c) { return std::string(1, c); }), "to_string");
|
|
m.add(fun(&Boxed_Number::to_string), "to_string");
|
|
|
|
|
|
bootstrap_pod_type<double>("double", m);
|
|
bootstrap_pod_type<long double>("long_double", m);
|
|
bootstrap_pod_type<float>("float", m);
|
|
bootstrap_pod_type<int>("int", m);
|
|
bootstrap_pod_type<long>("long", m);
|
|
bootstrap_pod_type<unsigned int>("unsigned_int", m);
|
|
bootstrap_pod_type<unsigned long>("unsigned_long", m);
|
|
bootstrap_pod_type<long long>("long_long", m);
|
|
bootstrap_pod_type<unsigned long long>("unsigned_long_long", m);
|
|
bootstrap_pod_type<size_t>("size_t", m);
|
|
bootstrap_pod_type<char>("char", m);
|
|
bootstrap_pod_type<wchar_t>("wchar_t", m);
|
|
bootstrap_pod_type<char16_t>("char16_t", m);
|
|
bootstrap_pod_type<char32_t>("char32_t", m);
|
|
bootstrap_pod_type<std::int8_t>("int8_t", m);
|
|
bootstrap_pod_type<std::int16_t>("int16_t", m);
|
|
bootstrap_pod_type<std::int32_t>("int32_t", m);
|
|
bootstrap_pod_type<std::int64_t>("int64_t", m);
|
|
bootstrap_pod_type<std::uint8_t>("uint8_t", m);
|
|
bootstrap_pod_type<std::uint16_t>("uint16_t", m);
|
|
bootstrap_pod_type<std::uint32_t>("uint32_t", m);
|
|
bootstrap_pod_type<std::uint64_t>("uint64_t", m);
|
|
|
|
|
|
operators::logical_compliment<bool>(m);
|
|
|
|
opers_arithmetic_pod(m);
|
|
|
|
|
|
m.add(fun(&Build_Info::version_major), "version_major");
|
|
m.add(fun(&Build_Info::version_minor), "version_minor");
|
|
m.add(fun(&Build_Info::version_patch), "version_patch");
|
|
m.add(fun(&Build_Info::version), "version");
|
|
m.add(fun(&Build_Info::compiler_version), "compiler_version");
|
|
m.add(fun(&Build_Info::compiler_name), "compiler_name");
|
|
m.add(fun(&Build_Info::compiler_id), "compiler_id");
|
|
m.add(fun(&Build_Info::debug_build), "debug_build");
|
|
|
|
|
|
m.add(fun(&print), "print_string");
|
|
m.add(fun(&println), "println_string");
|
|
|
|
m.add(dispatch::make_dynamic_proxy_function(&bind_function), "bind");
|
|
|
|
m.add(fun(&shared_ptr_unconst_clone<dispatch::Proxy_Function_Base>), "clone");
|
|
m.add(fun(&ptr_assign<std::remove_const<dispatch::Proxy_Function_Base>::type>), "=");
|
|
m.add(fun(&ptr_assign<std::add_const<dispatch::Proxy_Function_Base>::type>), "=");
|
|
m.add(chaiscript::base_class<dispatch::Proxy_Function_Base, dispatch::Assignable_Proxy_Function>());
|
|
m.add(fun(
|
|
[](dispatch::Assignable_Proxy_Function &t_lhs, const std::shared_ptr<const dispatch::Proxy_Function_Base> &t_rhs) {
|
|
t_lhs.assign(t_rhs);
|
|
}
|
|
), "="
|
|
);
|
|
|
|
m.add(fun(&Boxed_Value::type_match), "type_match");
|
|
|
|
|
|
m.add(chaiscript::fun(&has_parse_tree), "has_parse_tree");
|
|
m.add(chaiscript::fun(&get_parse_tree), "get_parse_tree");
|
|
|
|
m.add(chaiscript::base_class<std::runtime_error, chaiscript::exception::eval_error>());
|
|
m.add(chaiscript::base_class<std::exception, chaiscript::exception::eval_error>());
|
|
|
|
m.add(chaiscript::user_type<chaiscript::exception::arithmetic_error>(), "arithmetic_error");
|
|
m.add(chaiscript::base_class<std::runtime_error, chaiscript::exception::arithmetic_error>());
|
|
m.add(chaiscript::base_class<std::exception, chaiscript::exception::arithmetic_error>());
|
|
|
|
|
|
// chaiscript::bootstrap::standard_library::vector_type<std::vector<std::shared_ptr<chaiscript::AST_Node> > >("AST_NodeVector", m);
|
|
|
|
|
|
chaiscript::utility::add_class<chaiscript::exception::eval_error>(m,
|
|
"eval_error",
|
|
{ },
|
|
{ {fun(&chaiscript::exception::eval_error::reason), "reason"},
|
|
{fun(&chaiscript::exception::eval_error::pretty_print), "pretty_print"},
|
|
{fun([](const chaiscript::exception::eval_error &t_eval_error) {
|
|
std::vector<Boxed_Value> retval;
|
|
std::transform(t_eval_error.call_stack.begin(), t_eval_error.call_stack.end(),
|
|
std::back_inserter(retval),
|
|
&chaiscript::var<const std::shared_ptr<const chaiscript::AST_Node> &>);
|
|
return retval;
|
|
}), "call_stack"} }
|
|
);
|
|
|
|
|
|
chaiscript::utility::add_class<chaiscript::File_Position>(m,
|
|
"File_Position",
|
|
{ constructor<File_Position()>(),
|
|
constructor<File_Position(int, int)>() },
|
|
{ {fun(&File_Position::line), "line"},
|
|
{fun(&File_Position::column), "column"} }
|
|
);
|
|
|
|
|
|
chaiscript::utility::add_class<AST_Node>(m,
|
|
"AST_Node",
|
|
{ },
|
|
{ {fun(&AST_Node::text), "text"},
|
|
{fun(&AST_Node::identifier), "identifier"},
|
|
{fun(&AST_Node::filename), "filename"},
|
|
{fun(&AST_Node::start), "start"},
|
|
{fun(&AST_Node::end), "end"},
|
|
{fun(&AST_Node::to_string), "to_string"},
|
|
{fun([](const chaiscript::AST_Node &t_node) -> std::vector<Boxed_Value> {
|
|
std::vector<Boxed_Value> retval;
|
|
const auto children = t_node.get_children();
|
|
std::transform(children.begin(), children.end(),
|
|
std::back_inserter(retval),
|
|
&chaiscript::var<const std::shared_ptr<chaiscript::AST_Node> &>);
|
|
return retval;
|
|
}), "children"}
|
|
}
|
|
);
|
|
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|