1 files changed, 66 insertions, 0 deletions
diff --git a/appl/alphabet/main/seq.b b/appl/alphabet/main/seq.b
new file mode 100644
index 00000000..8e062738
--- /dev/null
+++ b/appl/alphabet/main/seq.b
@@ -0,0 +1,66 @@
+implement Seq, Mainmodule;
+include "sys.m";
+	sys: Sys;
+include "draw.m";
+include "sh.m";
+include "alphabet/reports.m";
+include "alphabet.m";
+	alphabet: Alphabet;
+		Value: import alphabet;
+
+Seq: module {};
+
+typesig(): string
+{
+	return "rr*-a-o";
+}
+
+init()
+{
+	sys = load Sys Sys->PATH;
+	alphabet = load Alphabet Alphabet->PATH;
+}
+
+quit()
+{
+}
+
+run(nil: ref Draw->Context, nil: ref Reports->Report, nil: chan of string,
+		opts: list of (int, list of ref Alphabet->Value),
+		args: list of ref Alphabet->Value): ref Alphabet->Value
+{
+	stop := -1;
+	for(; opts != nil; opts = tl opts){
+		case (hd opts).t0 {
+		'a' =>
+			stop = 0;
+		'o' =>
+			stop = 1;
+		}
+	}
+	spawn seqproc(r := chan of string, args, stop);
+	return ref Value.Vr(r);
+}
+
+seqproc(r: chan of string, args: list of ref Alphabet->Value, stop: int)
+{
+	status := "";
+	if(<-r == nil){
+pid := sys->pctl(0, nil);
+sys->print("%d. seq %d args\n", pid, len args);
+		for(; args != nil; args = tl args){
+			sr := (hd args).r().i;
+sys->print("%d. started\n", pid);
+			sr <-= nil;
+			status = <-sr;
+sys->print("%d. got status\n", pid);
+			if((status == nil) == stop)
+				break;
+		}
+	}else
+		r = nil;
+	for(; args != nil; args = tl args)
+		(hd args).r().i <-= "die!";
+	if(r != nil)
+		r <-= status;
+}