From 06f89c8c653c1f2bf3ff8223ff738f6937170857 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Mon, 30 Jan 2023 14:35:11 +0100
Subject: [PATCH] gen client: emit caps_in

---
 gen/client.ha | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/gen/client.ha b/gen/client.ha
index a52e8e5..5ef385a 100644
--- a/gen/client.ha
+++ b/gen/client.ha
@@ -20,9 +20,9 @@ export fn client(out: io::handle, doc: *ast::document) (void | io::error) = {
 
 const c_iface_method_src: str =
 	`export fn $iface_$method(
-	ep: helios::cap,$mparams
+	ep: helios::cap,$cparams$mparams
 ) $result = {
-	const (tag, a1) = helios::call(ep,
+	${caps_in_setup}const (tag, a1) = helios::call(ep,
 		$iface_label::$methodid,$params
 	);
 	assert(rt::label(tag) == 0); // TODO: Error handling
@@ -64,13 +64,26 @@ fn c_meth(
 	iface: *ast::interface,
 	meth: *ast::method,
 ) (void | io::error) = {
-	assert(len(meth.caps_in) == 0);  // TODO
-	assert(len(meth.caps_out) == 0); // TODO
+	assert(len(meth.caps_out) == 0);  // TODO
 
 	const id: ast::ident = [meth.name];
 	const name = gen_name_upper(&id);
 	defer free(name);
 
+	let cparams = strio::dynamic();
+	defer io::close(&cparams)!;
+
+	let caps_in_setup = strio::dynamic();
+	defer io::close(&caps_in_setup)!;
+
+	for (let i = 0z; i < len(meth.caps_in); i += 1) {
+		const cap = &meth.caps_in[i];
+		fmt::fprintf(&cparams, "\n\t{}: helios::cap,", cap.name)!;
+		fmt::fprintf(&caps_in_setup,
+			"rt::ipcbuf.caps[{}] = {};\n\t",
+			i, cap.name)!;
+	};
+
 	let mparams = strio::dynamic();
 	defer io::close(&mparams)!;
 
@@ -98,6 +111,8 @@ fn c_meth(
 		("method", meth.name),
 		("methodid", name),
 		("result", strio::string(&result)),
+		("cparams", strio::string(&cparams)),
+		("caps_in_setup", strio::string(&caps_in_setup)),
 		("mparams", strio::string(&mparams)),
 		("params", strio::string(&params)),
 	)?;
-- 
2.38.4