feat: added sort_by

kantord · Feb 5, 2018 · d53d583 · d53d583
1 parent 7a7f3be
commit d53d583
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/src/jq.pegjs b/src/jq.pegjs
@@ -102,7 +102,14 @@
         const mapped = to_entries(input).map(arg)
         return from_entries(mapped)
       },
-      "join": arg => input => input.join(arg(input))
+      "join": arg => input => input.join(arg(input)),
+      "sort_by": arg => input => unpack(input).sort((a, b) => {
+        const va = arg(a)
+        const vb = arg(b)
+        if (va < vb) return -1
+        if (va > vb) return 1
+        return 0
+      })
     }
 }
 

diff --git a/src/tests.json b/src/tests.json
@@ -461,6 +461,7 @@
     ["tonumber", ["tonumber"], [1, -1, "1", "-1", "1.23", "-.1"]],
     ["tostring", ["tostring"], [1, -1, "1", "-1", "1.23", "-.1", [1], {"a": 2}]],
     ["sort", ["sort", "[4, 5, 6] | sort"], [[1, -1], ["1", "-1", "1.23", "-.1"]]],
+    ["sort_by", ["sort_by(-.)", "sort_by(1 + .)", "sort_by(1)"], [[1, -1], [4.12, 42.3, -342, 0, 32, 1, 2, 3, 6, 6]]],
     ["join", ["join(\", \")", "join(\"\")", "join(.[0])"], [["a","b,c,d","e"], ["foo"], [], ["foo", "bar"]]],
     ["Additive inverse", ["-(1 + 3)", "-(-1)", ".a | -(.b)", "[--1]"], [
         {"a": {"b": 3}},