Add -s seek option

Author: jeswin

package.json

@@ -1,6 +1,6 @@
 {
   "name": "basho-eval",
-  "version": "0.0.13",
+  "version": "0.0.14",
   "author": "Isotropy Team<[email protected]>",
   "contributors": [
     "Jeswin Kumar<[email protected]>"

src/basho-eval.ts

@@ -23,6 +23,7 @@ const options = [
   "-q",         //            quote expression as string
   "-p",         //            print
   "-r",         //            reduce
+  "-s",         //            seek/recall a named result
   "-t",         //            terminate evaluation
   "-w",         //            Same as log, but without the newline
   "--error",    //            Error handling
@@ -431,16 +432,16 @@ async function evaluateInternal(
       async () =>
         await evalShorthand(
           args.slice(2),
-          input.map(
-            x =>
-              new PipelineValue(
-                args[1].split(",").map(name => {
-                  const item = findNamedValue(name, x);
-                  return item instanceof PipelineValue ? item.value : item;
-                }),
-                x
-              )
-          ),
+          input.map(x => {
+            const streams = args[1].split(",");
+            return new PipelineValue(
+              streams.map(name => {
+                const item = findNamedValue(name, x);
+                return item instanceof PipelineValue ? item.value : item;
+              }),
+              x
+            );
+          }),
           false
         )
     ],
@@ -606,6 +607,25 @@ async function evaluateInternal(
       }
     ],
 
+    /* Seek a named result */
+    [
+      x => x === "-s",
+      async () =>
+        await evalShorthand(
+          args.slice(2),
+          input.map(x => {
+            return new PipelineValue(
+              (() => {
+                const item = findNamedValue(args[1], x);
+                return item instanceof PipelineValue ? item.value : item;
+              })(),
+              x
+            );
+          }),
+          false
+        )
+    ],
+
     /* Terminate the pipeline */
     [
       x => x === "-t",

src/test/test.ts

@@ -381,6 +381,26 @@ describe("basho", () => {
     });
   });
 
+  it(`Seek a named result`, async () => {
+    const output = await evaluate([
+      "[10,20,30,40]",
+      "-j",
+      "x+1",
+      "-n",
+      "add1",
+      "-j",
+      "x+2",
+      "-n",
+      "add2",
+      "-s",
+      "add1"
+    ]);
+    (await toResult(output)).should.deepEqual({
+      mustPrint: true,
+      result: [11, 21, 31, 41]
+    });
+  });
+
   it(`Captures an error`, async () => {
     const output = await evaluate([
       "['a,b', 10, 'c,d']",