xo-reader/include/xo/interpreter2/DVsmEvalArgsFrame.hpp

48 lines
1.4 KiB
C++

/** @file DVsmEvalArgsFrame.hpp
*
* @author Roland Conybeare, Feb 2026
**/
#pragma once
#include "DVsmApplyFrame.hpp"
namespace xo {
namespace scm {
/** frame for executing an apply expression **/
class DVsmEvalArgsFrame : public VsmFrame {
public:
using ACollector = xo::mm::ACollector;
using AAllocator = xo::mm::AAllocator;
using ppindentinfo = xo::print::ppindentinfo;
public:
/** see picture in VirtualSchematikaMachine._do_eval_apply_op()
*
* old_parent = [apply frame]
* old_cont = [xfer to called function]
*
**/
DVsmEvalArgsFrame(obj<AGCObject> old_parent,
VsmInstr old_cont);
static DVsmEvalArgsFrame * make(obj<AAllocator> mm,
obj<AGCObject> apply_frame,
VsmInstr old_cont);
std::size_t shallow_size() const noexcept;
DVsmEvalArgsFrame * shallow_copy(obj<AAllocator> mm) const noexcept;
std::size_t forward_children(obj<ACollector> gc) noexcept;
bool pretty(const ppindentinfo & ppii) const;
protected:
/** next argument to be evaluated. -1 means function head **/
int32_t i_arg_ = -1;
};
} /*namespace scm*/
} /*namespace xo*/
/* end DVsmEvalArgsFrame.hpp */