forked from Orchid/orchid
partway through fixes, macro system needs resdesign
This commit is contained in:
@@ -1,24 +1,20 @@
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use futures::{StreamExt, stream};
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use orchid_base::{OrcRes, sym};
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use orchid_extension::TAtom;
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use orchid_extension::ToExpr;
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use orchid_extension::exec;
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use orchid_extension::Expr;
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use orchid_extension::gen_expr::{GExpr, call, new_atom};
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use orchid_extension::tree::{GenMember, fun, prefix};
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use orchid_extension::{Expr, TAtom, ToExpr, exec};
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use crate::macros::match_macros::MatcherAtom;
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use crate::macros::utils::{build_macro, mactree, mactreev};
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use crate::macros::utils::{RuleCtx, build_macro, mactree, mactreev};
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use crate::{HomoTpl, MacTree, OrcOpt};
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pub async fn gen_tuple_macro_lib() -> Vec<GenMember> {
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prefix("std::tuple", [
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build_macro(None, ["t"])
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.rule(mactreev!(std::tuple::t [ "...$" elements 0 ]), [|[elements]: [_; _]| {
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exec(async move |mut h| {
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let tup = h
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.exec::<HomoTpl<TAtom<MacTree>>>(call(sym!(macros::resolve),
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new_atom(mactree!((macros::common::comma_list "push" elements ;))),
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.rule(mactreev!(std::tuple::t [ "...$" elements 0 ]), [async |mut cx, [elements]| {
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let tup: HomoTpl<TAtom<MacTree>> = cx
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.exec(cx.recur(
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mactree!((macros::common::comma_list "push" elements ;)),
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))
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.await?;
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let val = stream::iter(&tup.0[..])
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@@ -33,65 +29,52 @@ pub async fn gen_tuple_macro_lib() -> Vec<GenMember> {
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})
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.await;
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Ok(val)
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})
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}])
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.rule(
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mactreev!(pattern::match_rule(std::tuple::t[ "...$" elements 0 macros::common::, macros::common::..])),
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[async |[elements]: [_; _]| parse_tpl(elements, Some(mactree!(macros::common::_))).await],
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[async |cx, [elements]| parse_tpl(cx, elements, Some(mactree!(macros::common::_))).await],
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)
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.rule(
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mactreev!(pattern::match_rule(
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std::tuple::t[ "...$" elements 1 macros::common::, macros::common::.. "...$" tail 0]
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)),
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[async |[elements, tail]: [_; _]| parse_tpl(elements, Some(tail)).await],
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[async |cx, [elements, tail]| parse_tpl(cx, elements, Some(tail)).await],
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)
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.rule(mactreev!(pattern::match_rule(std::tuple::t[ "...$" elements 0])), [
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|[elements]: [_; _]| parse_tpl(elements, None),
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async |cx, [elements]| parse_tpl(cx, elements, None).await,
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])
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.finish(),
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fun(false, "matcher_body", tuple_matcher_body),
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])
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}
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fn parse_tpl(elements: MacTree, tail_matcher: Option<MacTree>) -> impl Future<Output = GExpr> {
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exec(async move |mut h| -> OrcRes<GExpr> {
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let tup = h
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.exec::<HomoTpl<TAtom<MacTree>>>(call(sym!(macros::resolve), new_atom(
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mactree!((macros::common::comma_list "push" elements ;)),
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)))
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.await?;
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let mut subs = Vec::with_capacity(tup.0.len());
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for mac_a in &tup.0[..] {
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let sub = h
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.exec::<TAtom<MatcherAtom>>(call(sym!(macros::resolve), new_atom(
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mactree!(pattern::match_rule ("push" mac_a.own().await ;)),
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)))
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.await?;
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subs.push(sub);
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}
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let tail_matcher = match tail_matcher {
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Some(mac) => Some(
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h.exec::<TAtom<MatcherAtom>>(call(sym!(macros::resolve), new_atom(
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mactree!(pattern::match_rule "push" mac ;),
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)))
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.await?,
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),
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None => None,
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};
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Ok(new_atom(MatcherAtom {
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keys: stream::iter(&subs[..])
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.flat_map(|t| t.keys())
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.chain(stream::iter(&tail_matcher).flat_map(|mat| mat.keys()))
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.collect()
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.await,
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matcher: call(sym!(std::tuple::matcher_body), (
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HomoTpl(subs),
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OrcOpt(tail_matcher),
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))
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async fn parse_tpl(
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mut cx: RuleCtx<'_>,
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elements: MacTree,
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tail_matcher: Option<MacTree>,
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) -> OrcRes<GExpr> {
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let tup: HomoTpl<TAtom<MacTree>> =
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cx.exec(cx.recur(mactree!((macros::common::comma_list "push" elements ;)))).await?;
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let mut subs = Vec::with_capacity(tup.0.len());
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for mac_a in &tup.0[..] {
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let sub: TAtom<MatcherAtom> =
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cx.exec(cx.recur(mactree!(pattern::match_rule ("push" mac_a.own().await ;)))).await?;
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subs.push(sub);
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}
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let tail_matcher: Option<TAtom<MatcherAtom>> = match tail_matcher {
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Some(mac) => Some(cx.exec(cx.recur(mactree!(pattern::match_rule "push" mac ;))).await?),
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None => None,
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};
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Ok(new_atom(MatcherAtom {
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keys: stream::iter(&subs[..])
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.flat_map(|t| t.keys())
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.chain(stream::iter(&tail_matcher).flat_map(|mat| mat.keys()))
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.collect()
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.await,
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matcher: call(sym!(std::tuple::matcher_body), (HomoTpl(subs), OrcOpt(tail_matcher)))
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.to_expr()
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.await,
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}))
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})
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}))
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}
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fn tuple_matcher_body(
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