From dcc47855b8d7685e47644ee6966df6dc7de8dfa4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tilo=20Pr=C3=BCtz?= <tilo@infopark.de>
Date: Fri, 22 Apr 2022 16:45:10 +0200
Subject: [PATCH] Int64SliceFlag.ValueFromContext() as convenient accessor

---
 flag_int64_slice.go | 5 +++++
 flag_test.go        | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/flag_int64_slice.go b/flag_int64_slice.go
index a53b185..29e8dc4 100644
--- a/flag_int64_slice.go
+++ b/flag_int64_slice.go
@@ -174,6 +174,11 @@ func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error {
 	return nil
 }
 
+// ValueFromContext returns the flag’s value in the given Context.
+func (f *Int64SliceFlag) ValueFromContext(ctx *Context) []int64 {
+	return ctx.Int64Slice(f.Name)
+}
+
 // Int64Slice looks up the value of a local Int64SliceFlag, returns
 // nil if not found
 func (c *Context) Int64Slice(name string) []int64 {
diff --git a/flag_test.go b/flag_test.go
index 0b343e9..d510235 100644
--- a/flag_test.go
+++ b/flag_test.go
@@ -1035,6 +1035,14 @@ func TestInt64SliceFlag_ReturnNil(t *testing.T) {
 	}
 }
 
+func TestInt64SliceFlagValueFromContext(t *testing.T) {
+	set := flag.NewFlagSet("test", 0)
+	set.Var(NewInt64Slice(1, 2, 3), "myflag", "doc")
+	ctx := NewContext(nil, set, nil)
+	f := &Int64SliceFlag{Name: "myflag"}
+	expect(t, f.ValueFromContext(ctx), []int64{1, 2, 3})
+}
+
 var float64FlagTests = []struct {
 	name     string
 	expected string