xo-expression2: + Expression facet

include/xo/expression2/detail/AExpression.hpp

@@ -0,0 +1,72 @@
+/** @file AExpression.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/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 <xo/facet/obj.hpp>
+#include <xo/facet/facet_implementation.hpp>
+#include <xo/facet/typeseq.hpp>
+
+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;
+    ///@}
+
+    /** @defgroup scm-expression-methods **/
+    ///@{
+    // const methods
+    /** RTTI: unique id# for actual runtime data representation **/
+    virtual typeseq _typeseq() 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*/
+
+/*  */

include/xo/expression2/detail/IExpression_Any.hpp

@@ -0,0 +1,87 @@
+/** @file IExpression_Any.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/Expression.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/Expression.json5]
+ **/
+
+#pragma once
+
+#include "AExpression.hpp"
+#include <xo/facet/obj.hpp>
+
+namespace xo { namespace scm { class IExpression_Any; } }
+
+namespace xo {
+namespace facet {
+
+template <>
+struct FacetImplementation<xo::scm::AExpression,
+                           DVariantPlaceholder>
+{
+    using ImplType = xo::scm::IExpression_Any;
+};
+
+}
+}
+
+namespace xo {
+namespace scm {
+
+    /** @class IExpression_Any
+     *  @brief AExpression implementation for empty variant instance
+     **/
+    class IExpression_Any : public AExpression {
+    public:
+        /** @defgroup scm-expression-any-type-traits **/
+        ///@{
+
+        /** integer identifying a type **/
+        using typeseq = xo::facet::typeseq;
+
+        ///@}
+        /** @defgroup scm-expression-any-methods **/
+        ///@{
+
+        const AExpression * iface() const { return std::launder(this); }
+
+        // from AExpression
+
+        // const methods
+        typeseq _typeseq() const noexcept override { return s_typeseq; }
+        [[noreturn]] TypeRef typeref(Copaque)  const  noexcept override { _fatal(); }
+        [[noreturn]] TypeDescr valuetype(Copaque)  const  noexcept override { _fatal(); }
+
+        // nonconst methods
+        [[noreturn]] void assign_valuetype(Opaque, TypeDescr)  noexcept override { _fatal(); }
+
+        ///@}
+
+    private:
+        /** @defgraoup scm-expression-any-private-methods **/
+        ///@{
+
+        [[noreturn]] static void _fatal();
+
+        ///@}
+
+    public:
+        /** @defgroup scm-expression-any-member-vars **/
+        ///@{
+
+        static typeseq s_typeseq;
+        static bool _valid;
+
+        ///@}
+    };
+
+} /*namespace scm */
+} /*namespace xo */
+
+/* IExpression_Any.hpp */

include/xo/expression2/detail/IExpression_Xfer.hpp

@@ -0,0 +1,86 @@
+/** @file IExpression_Xfer.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/Expression.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/Expression.json5]
+ **/
+
+#pragma once
+
+#include "TypeRef.hpp"
+
+namespace xo {
+namespace scm {
+    /** @class IExpression_Xfer
+     **/
+    template <typename DRepr, typename IExpression_DRepr>
+    class IExpression_Xfer : public AExpression {
+    public:
+        /** @defgroup scm-expression-xfer-type-traits **/
+        ///@{
+        /** actual implementation (not generated; often delegates to DRepr) **/
+        using Impl = IExpression_DRepr;
+        /** integer identifying a type **/
+        using typeseq = AExpression::typeseq;
+        ///@}
+
+        /** @defgroup scm-expression-xfer-methods **/
+        ///@{
+
+        static const DRepr & _dcast(Copaque d) { return *(const DRepr *)d; }
+        static DRepr & _dcast(Opaque d) { return *(DRepr *)d; }
+
+        // from AExpression
+
+        // const methods
+        typeseq _typeseq() const noexcept override { return s_typeseq; }
+        TypeRef typeref(Copaque data)  const  noexcept override {
+            return I::typeref(_dcast(data));
+        }
+        TypeDescr valuetype(Copaque data)  const  noexcept override {
+            return I::valuetype(_dcast(data));
+        }
+
+        // non-const methods
+        void assign_valuetype(Opaque data, TypeDescr td)  noexcept override {
+            return I::assign_valuetype(_dcast(data), td);
+        }
+
+        ///@}
+
+    private:
+        using I = Impl;
+
+    public:
+        /** @defgroup scm-expression-xfer-member-vars **/
+        ///@{
+
+        /** typeseq for template parameter DRepr **/
+        static typeseq s_typeseq;
+        /** true iff satisfies facet implementation **/
+        static bool _valid;
+
+        ///@}
+    };
+
+    template <typename DRepr, typename IExpression_DRepr>
+    xo::facet::typeseq
+    IExpression_Xfer<DRepr, IExpression_DRepr>::s_typeseq
+      = xo::facet::typeseq::id<DRepr>();
+
+    template <typename DRepr, typename IExpression_DRepr>
+    bool
+    IExpression_Xfer<DRepr, IExpression_DRepr>::_valid
+      = xo::facet::valid_facet_implementation<AExpression,
+                                              IExpression_Xfer>();
+
+} /*namespace scm */
+} /*namespace xo*/
+
+/* end IExpression_Xfer.hpp */

include/xo/expression2/detail/RExpression.hpp

@@ -0,0 +1,81 @@
+/** @file RExpression.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/Expression.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/Expression.json5]
+ **/
+
+#pragma once
+
+#include "AExpression.hpp"
+
+namespace xo {
+namespace scm {
+
+/** @class RExpression
+ **/
+template <typename Object>
+class RExpression : public Object {
+private:
+    using O = Object;
+
+public:
+    /** @defgroup scm-expression-router-type-traits **/
+    ///@{
+    using ObjectType = Object;
+    using DataPtr = Object::DataPtr;
+    using typeseq = xo::reflect::typeseq;
+    ///@}
+
+    /** @defgroup scm-expression-router-ctors **/
+    ///@{
+    RExpression() {}
+    RExpression(Object::DataPtr data) : Object{std::move(data)} {}
+
+    ///@}
+    /** @defgroup scm-expression-router-methods **/
+    ///@{
+
+    // const methods
+    typeseq _typeseq() const noexcept { return O::iface()->_typeseq(); }
+    TypeRef typeref()  const  noexcept override {
+        return O::iface()->typeref(O::data());
+    }
+    TypeDescr valuetype()  const  noexcept override {
+        return O::iface()->valuetype(O::data());
+    }
+
+    // non-const methods
+    // << do something for non-const methods >>
+    //
+
+    ///@}
+    /** @defgroup scm-expression-member-vars **/
+    ///@{
+
+    static bool _valid;
+
+    ///@}
+};
+
+template <typename Object>
+bool
+RExpression<Object>::_valid = xo::facet::valid_object_router<Object>();
+
+} /*namespace scm*/
+} /*namespace xo*/
+
+namespace xo { namespace facet {
+    template <typename Object>
+    struct RoutingFor<xo::scm::AExpression, Object> {
+        using RoutingType = xo::scm::RExpression<Object>;
+    };
+} }
+
+/* end RExpression.hpp */