internal/rosa/azalea: integer arrays

This is useful for some helper functions. Performance is unaffected.

Before:
BenchmarkStage3-128     	    8308	   1960687 ns/op	 1023794 B/op	   14755 allocs/op
BenchmarkAll-128        	    3331	   5518571 ns/op	 2902320 B/op	   37993 allocs/op

After:
BenchmarkStage3-128     	    8330	   1946273 ns/op	 1023046 B/op	   14750 allocs/op
BenchmarkAll-128        	    3296	   5585805 ns/op	 2901746 B/op	   37991 allocs/op

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/azalea/evaluate_test.go

@@ -25,6 +25,17 @@ func makeStackCheck(check func(args FArgs) (any, error)) []Frame {
 	}}}
 }
 
+// checkArgs is like makeStackCheck, but the resulting function asserts that its
+// args match the expected value.
+func checkArgs(want FArgs) []Frame {
+	return makeStackCheck(func(args FArgs) (any, error) {
+		if !reflect.DeepEqual(args, want) {
+			return nil, fmt.Errorf("%#v, want %#v", args, want)
+		}
+		return "\xfd", nil
+	})
+}
+
 func TestEvaluate(t *testing.T) {
 	t.Parallel()
 
@@ -164,6 +175,11 @@ func TestEvaluate(t *testing.T) {
 		{"source handle", `package name { source = name; }`, nil, FArgs{
 			{K: unique.Make(Ident("source")), V: Ident("name")},
 		}, nil},
+
+		{"integer array", `f { v = [ 0 ]; _v = [ 0, 9 ]; }`, checkArgs(FArgs{
+			{K: unique.Make(Ident("v")), V: []int64{0}},
+			{K: unique.Make(Ident("_v")), V: []int64{0, 9}},
+		}), "\xfd", nil},
 	}
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {