New language: Unison

backend/src/langs.ts

@@ -2500,6 +2500,30 @@ a
 `,
     timeout: 15,
   },
+  unison: {
+    aliases: ["ucm"],
+    name: "Unison",
+    setup: "shopt -s dotglob && cp -R /opt/unison/project-template/* ./",
+    repl: "unison -codebase .",
+    input: "find : [a] -> [a]",
+    output: "base.List.reverse",
+    main: "main.u",
+    run: `echo "Type 'run main' to run the code." && unison -codebase .`,
+    helloInput: "run main",
+    scope: {
+      code: `x = 123 * 234`,
+      input: `DELAY: 1
+add x
+DELAY: 0.5
+display x`,
+    },
+    template: `use io
+
+main : '{IO} ()
+main = 'let
+  printLine "Hello, world!"
+`,
+  },
   unlambda: {
     aliases: ["unl"],
     name: "Unlambda",

backend/src/test-runner.ts

@@ -26,8 +26,18 @@ function findPosition(str: string, idx: number) {
   return { line, character };
 }
 
-function forTTY(input: string) {
+async function sendInput(send: (msg: any) => any, input: string) {
-  return input.replace(/\n/g, "\r") + "\r";
+  for (const line of input.split("\n")) {
+    if (line.startsWith("DELAY:")) {
+      const delay = parseFloat(line.replace(/DELAY: */, ""));
+      if (Number.isNaN(delay)) continue;
+      await new Promise((resolve) =>
+        setTimeout(resolve, delay * 1000 * TIMEOUT_FACTOR)
+      );
+    } else {
+      send({ event: "terminalInput", input: line + "\r" });
+    }
+  }
 }
 
 class Test {
@@ -196,24 +206,21 @@ class Test {
     const pattern = this.config.hello || "Hello, world!";
     this.send({ event: "runCode", code: this.config.template });
     if (this.config.helloInput !== undefined) {
-      this.send({
+      sendInput(this.send, this.config.helloInput);
-        event: "terminalInput",
-        input: forTTY(this.config.helloInput),
-      });
     }
     await this.waitForOutput(pattern, this.config.helloMaxLength);
   };
   testRepl = async () => {
     const input = this.config.input || "123 * 234";
     const output = this.config.output || "28782";
-    this.send({ event: "terminalInput", input: forTTY(input) });
+    sendInput(this.send, input);
     await this.waitForOutput(output);
   };
   testRunRepl = async () => {
     const input = this.config.runReplInput || this.config.input || "123 * 234";
     const output = this.config.runReplOutput || this.config.output || "28782";
     this.send({ event: "runCode", code: this.config.template });
-    this.send({ event: "terminalInput", input: forTTY(input) });
+    sendInput(this.send, input);
     await this.waitForOutput(output);
   };
   testScope = async () => {
@@ -231,7 +238,7 @@ class Test {
       allCode = allCode + code + "\n";
     }
     this.send({ event: "runCode", code: allCode });
-    this.send({ event: "terminalInput", input: forTTY(input) });
+    sendInput(this.send, input);
     await this.waitForOutput(output);
   };
   testFormat = async () => {

scripts/docker-install-phase4.bash

@@ -284,5 +284,9 @@ ln -s /opt/swift/bin/swiftc /usr/local/bin/swiftc
 ln -s /opt/swift/bin/sourcekit-lsp /usr/local/bin/sourcekit-lsp
 rm swift.tar.gz
 
+# Unison
+wget -nv https://github.com/raxod502/riju-cdn/releases/download/unison-M1l-232-519cbeb58704c1b9410c9386e492be59fd5a5334/unison -O /usr/local/bin/unison
+chmod +x /usr/local/bin/unison
+
 popd >/dev/null
 rm "$0"

scripts/docker-install-phase7.bash

@@ -71,6 +71,13 @@ cat bsconfig.json | jq '.name = "riju-project"' | sponge bsconfig.json
 yarn install
 popd >/dev/null
 
+# Unison
+mkdir -p /opt/unison/project-template
+pushd /opt/unison/project-template >/dev/null
+unison -codebase . init
+LESS="+q" unison -codebase . <<< 'pull https://github.com/unisonweb/base:.trunk .base'
+popd >/dev/null
+
 # Befunge
 tee /usr/local/bin/befunge-repl >/dev/null <<"EOF"
 #!/usr/bin/env -S NODE_PATH=/usr/lib/node_modules node