// E6BR-4 (own-wins) — a protocol method-signature names a same-name `Box` under
// every WRAPPER / COMPOUND form, and each must resolve SOURCE-AWARE (pinned to the
// protocol's defining module = main), selecting main's OWN `Box { m }` rather than
// the global last-wins `Box { a }` from the flat-imported `dep.sx`.
//
// The reconciled choke-point (resolveRegistrationSigTypeInSource → the recursive
// source-aware engine) recurses every structural shape and resolves the leaf
// author own-wins. The E6BR-4 RED CELL is the WRAPPED RETURN `() -> *Box`: pre-fix
// the wrapped sig fell to the no-author `type_bridge.resolveTemplateSignatureType`
// (global last-wins) and typed the result as `dep`'s `Box { a }`, so `bp.m` was
// `field 'm' not found on type 'Box'`. Discriminating returns: `*Box`, `?Box`,
// `(Box,Box)`, `[2]Box` (each observed by a `.m` access). Routing-only params:
// `*Box`, `?Box`, `[]Box`, `[2]Box`, `(Box,Box)`, nested `*?[]Box` — all resolved
// through the same `resolveCompound` recursion at protocol-decl registration.

#import "modules/std.sx";
#import "0824-protocols-same-name-method-wrapped-own-wins/dep.sx";

Box :: struct { m: i32; }
Holder :: struct { b: Box = ---; }

Provider :: protocol {
    // discriminating wrapped/compound RETURNS
    getp :: () -> *Box;
    geto :: () -> ?Box;
    gett :: () -> (Box, Box);
    geta :: () -> [2]Box;
    // routing-only wrapped/compound PARAMS
    sump :: (p: *Box) -> i32;
    sumo :: (o: ?Box) -> i32;
    sums :: (s: []Box) -> i32;
    suma :: (a: [2]Box) -> i32;
    sumt :: (t: (Box, Box)) -> i32;
    sumn :: (n: *?[]Box) -> i32;
}

impl Provider for Holder {
    getp :: (self: *Holder) -> *Box { @self.b }
    geto :: (self: *Holder) -> ?Box { self.b }
    gett :: (self: *Holder) -> (Box, Box) { (self.b, self.b) }
    geta :: (self: *Holder) -> [2]Box { r : [2]Box = ---; r[0] = self.b; r[1] = self.b; r }
    sump :: (self: *Holder, p: *Box) -> i32 { p.m }
    sumo :: (self: *Holder, o: ?Box) -> i32 { o!.m }
    sums :: (self: *Holder, s: []Box) -> i32 { s[0].m }
    suma :: (self: *Holder, a: [2]Box) -> i32 { a[0].m }
    sumt :: (self: *Holder, t: (Box, Box)) -> i32 { t.0.m }
    sumn :: (self: *Holder, n: *?[]Box) -> i32 { if n == null { 0 } else { 6 } }
}

main :: () -> i32 {
    h : Holder = ---;
    h.b.m = 7;
    p : Provider = xx @h;

    // discriminating returns — `.m` only resolves if each binds main's `Box`
    bp := p.getp();
    bo := p.geto();
    bt := p.gett();
    ba := p.geta();

    // routing-only params, constructed in main and passed through the protocol
    one : Box = ---; one.m = 1;
    arr : [2]Box = ---; arr[0].m = 2; arr[1].m = 3;
    sl : []Box = arr[0..2];
    osl : ?[]Box = sl;
    tup : (Box, Box) = (one, one);

    sp := p.sump(@one);
    so := p.sumo(one);
    ss := p.sums(sl);
    sa := p.suma(arr);
    st := p.sumt(tup);
    sn := p.sumn(@osl);

    print("p={} o={} t={} a={} | sp={} so={} ss={} sa={} st={} sn={} dep={}\n",
        bp.m, bo!.m, bt.0.m, ba[0].m, sp, so, ss, sa, st, sn, dep_box());
    0
}
