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xo-interpreter2 stack: invoke closures w/ tail-call opt [WIP]

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This commit is contained in:
Roland Conybeare 2026-02-13 02:05:47 -05:00
commit cfa5692804
14 changed files with 174 additions and 87 deletions
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25
src/interpreter2/DClosure.cpp
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@ -36,6 +36,14 @@ namespace xo {
DClosure::apply_nocheck(obj<ARuntimeContext> rcx,
const DArray * args)
{
// control here only if you try to invoke a closure
// as a procedure.
//
// May support this later, but requires
// nesting VSM (because call consumes c++ stack)
//
// typically prefer trampoline built into VSM
(void)args;
scope log(XO_DEBUG(true));
@ -45,23 +53,6 @@ namespace xo {
log && log(xtag("vsm_rcx.data", (void*)vsm_rcx.data()));
// we already checked this stuff before calling apply_nocheck()
// assert (n_args == args->size());
#ifdef NOT_YET
auto local_env
= DLocalEnv::_make(vsm_rcx->allocator(),
env_,
lambda_->local_symtab(),
args);
#endif
// plan:
// 1. push current local environment to vsm stack_
// 2. set expr_ to lambda body
// 2. set pc_ to eval
// 3. set cont_ to restore local_env_
auto err_mm
= vsm_rcx->error_allocator();