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xo-interpreter2 stack: support 0-argument function calls

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This commit is contained in:
Roland Conybeare 2026-02-28 13:20:11 +11:00
commit 878e12badc
1 changed files with 17 additions and 4 deletions
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21
src/interpreter2/VirtualSchematikaMachine.cpp
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@ -699,11 +699,24 @@ namespace xo {
// now i_arg is 0 -> evaluate that argument
this->expr_ = apply_expr->arg(i_arg);
this->pc_ = VsmInstr::c_eval;
this->cont_ = VsmInstr::c_evalargs;
if (i_arg >= static_cast<int32_t>(apply_expr->n_args())) {
// corner case: function with 0 arguments
return;
this->fn_ = apply_frame->fn(); // = value;
this->args_ = apply_frame->args(); // empty
this->stack_ = apply_frame->parent();
this->pc_ = VsmInstr::c_apply;
this->cont_ = apply_frame->cont();
return;
} else {
this->expr_ = apply_expr->arg(i_arg);
this->pc_ = VsmInstr::c_eval;
this->cont_ = VsmInstr::c_evalargs;
return;
}
} else {
// error - function position must deliver something with AProcedure?
// or DClosure, but we'll get to that.