82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/** @file AExpression.hpp
|
|
*
|
|
* Generated automagically from ingredients:
|
|
* 1. code generator:
|
|
* [xo-facet/codegen/genfacet]
|
|
* arguments:
|
|
* --input [idl/Expression.json5]
|
|
* 2. jinja2 template for abstract facet .hpp file:
|
|
* [abstract_facet.hpp.j2]
|
|
* 3. idl for facet methods
|
|
* [idl/Expression.json5]
|
|
**/
|
|
|
|
#pragma once
|
|
|
|
// includes (via {facet_includes})
|
|
#include "TypeRef.hpp"
|
|
#include "exprtype.hpp"
|
|
#include <xo/reflect/TypeDescr.hpp>
|
|
#include <xo/facet/obj.hpp>
|
|
#include <xo/facet/facet_implementation.hpp>
|
|
#include <xo/facet/typeseq.hpp>
|
|
|
|
// {pretext} here
|
|
|
|
namespace xo {
|
|
namespace scm {
|
|
|
|
using Copaque = const void *;
|
|
using Opaque = void *;
|
|
|
|
/**
|
|
Representation for executable Schematika expressions
|
|
**/
|
|
class AExpression {
|
|
public:
|
|
/** @defgroup scm-expression-type-traits **/
|
|
///@{
|
|
// types
|
|
/** integer identifying a type **/
|
|
using typeseq = xo::facet::typeseq;
|
|
using Copaque = const void *;
|
|
using Opaque = void *;
|
|
/** struct describing a type **/
|
|
using TypeDescr = xo::reflect::TypeDescr;
|
|
///@}
|
|
|
|
/** @defgroup scm-expression-methods **/
|
|
///@{
|
|
// const methods
|
|
/** RTTI: unique id# for actual runtime data representation **/
|
|
virtual typeseq _typeseq() const noexcept = 0;
|
|
/** expression type (constant | apply | ..) **/
|
|
virtual exprtype extype(Copaque data) const noexcept = 0;
|
|
/** placeholder for type giving possible values for this expression **/
|
|
virtual TypeRef typeref(Copaque data) const noexcept = 0;
|
|
/** type giving possible values for this expression. Maybe null before typecheck **/
|
|
virtual TypeDescr valuetype(Copaque data) const noexcept = 0;
|
|
|
|
// nonconst methods
|
|
/** assing to valuetype member. Useful when scaffolding expressions **/
|
|
virtual void assign_valuetype(Opaque data, TypeDescr td) noexcept = 0;
|
|
///@}
|
|
}; /*AExpression*/
|
|
|
|
/** Implementation IExpression_DRepr of AExpression for state DRepr
|
|
* should provide a specialization:
|
|
*
|
|
* template <>
|
|
* struct xo::facet::FacetImplementation<AExpression, DRepr> {
|
|
* using Impltype = IExpression_DRepr;
|
|
* };
|
|
*
|
|
* then IExpression_ImplType<DRepr> --> IExpression_DRepr
|
|
**/
|
|
template <typename DRepr>
|
|
using IExpression_ImplType = xo::facet::FacetImplType<AExpression, DRepr>;
|
|
|
|
} /*namespace scm*/
|
|
} /*namespace xo*/
|
|
|
|
/* AExpression.hpp */
|