propagators/conditional -- conditional & conditionalWriter

cicada-lang · Sep 30, 2024 · 3f5e0a0 · 3f5e0a0
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diff --git a/TODO.md b/TODO.md
@@ -4,7 +4,6 @@
 
 > https://github.com/cicada-lang/propagator/issues/4
 
-propagators/conditional -- conditional & conditionalWriter
 propagators/conditional.test
 
 propagators/constant.test

diff --git a/src/propagators/conditional.test.ts b/src/propagators/conditional.test.ts
diff --git a/src/propagators/conditional.ts b/src/propagators/conditional.ts
@@ -0,0 +1,18 @@
+import { definePropagator } from "../propagator/index.js"
+import { inverter, switcher } from "./index.js"
+
+export const conditional = definePropagator(
+  4,
+  (control, ifTrue, ifFalse, output) => {
+    switcher(control, ifTrue, output)
+    switcher(inverter(control), ifFalse, output)
+  },
+)
+
+export const conditionalWriter = definePropagator(
+  4,
+  (control, input, ifTrue, ifFalse) => {
+    switcher(control, input, ifTrue)
+    switcher(inverter(control), input, ifFalse)
+  },
+)