Roland Conybeare
7f4b4e7cbd
subrepo: subdir: "xo-interpreter2" merged: "e4c6ff57" upstream: origin: "git@github.com:Rconybea/xo-interpreter2.git" branch: "main" commit: "e4c6ff57" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/** @file DVsmDefContFrame.hpp
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*
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* @author Roland Conybeare, Feb 2026
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**/
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#pragma once
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#include "VsmInstr.hpp"
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#include <xo/expression2/DefineExpr.hpp>
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#include <xo/alloc2/GCObject.hpp>
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namespace xo {
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namespace scm {
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/** @brief saved VSM state during evaluation of a SequenceExpr
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**/
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class DVsmDefContFrame {
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public:
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using AGCObjectVisitor = xo::mm::AGCObjectVisitor;
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using VisitReason = xo::mm::VisitReason;
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using AAllocator = xo::mm::AAllocator;
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using AGCObject = xo::mm::AGCObject;
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using ppindentinfo = xo::print::ppindentinfo;
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public:
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/** @defgroup scm-vsmdefcontframe-ctors constructors **/
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///@{
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DVsmDefContFrame(obj<AGCObject> parent,
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VsmInstr cont,
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DDefineExpr * def_expr);
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/** create instance using memory from allocator @p mm **/
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static DVsmDefContFrame * make(obj<AAllocator> mm,
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obj<AGCObject> parent_stack,
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VsmInstr cont,
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DDefineExpr * def_expr);
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///@}
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/** @defgroup scm-vsmdefcontframe-access-methods access methods **/
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///@{
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obj<AGCObject> parent() const noexcept { return parent_; }
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VsmInstr cont() const noexcept { return cont_; }
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DDefineExpr * def_expr() const noexcept { return def_expr_; }
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///@}
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/** @defgroup scm-vsmdefcontframe-general-methods general methods **/
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///@{
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///@}
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/** @defgroup scm-vsmdefcontframe-gcobject-facet gcobject facet **/
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///@{
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DVsmDefContFrame * gco_shallow_move(obj<AGCObjectVisitor> gc) noexcept;
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void visit_gco_children(VisitReason reason, obj<AGCObjectVisitor> gc) noexcept;
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///@}
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/** @defgrouop scm-vsmseqcontframe-printable-facet printable facet **/
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///@{
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bool pretty(const ppindentinfo & ppii) const noexcept;
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///@}
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private:
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/** @defgroup scm-vsmdefcontframe-members member variables **/
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///@{
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/** saved VSM stack; restore when this frame consumed **/
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obj<AGCObject> parent_;
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/** saved continuation; restore when this frame consumed **/
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VsmInstr cont_;
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/** saved expr. evaluate elements of this sequence in order **/
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DDefineExpr * def_expr_ = nullptr;
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///@}
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};
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} /*namespace scm*/
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} /*namespace xo*/
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/* end DVsmDefContFrame.hpp */
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