feat(helper): add helper module with NamedArgVar helpers.

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gad-lang · May 23, 2024 · e8e06d0 · e8e06d0
1 parent 1581fbb
commit e8e06d0
Showing 1 changed file with 31 additions and 0 deletions.
diff --git a/helper/namedargvar.go b/helper/namedargvar.go
@@ -0,0 +1,31 @@
+package helper
+
+import "github.com/gad-lang/gad"
+
+func NamedArgOfWriter(name string) *gad.NamedArgVar {
+	return &gad.NamedArgVar{
+		Name: name,
+		TypeAssertion: &gad.TypeAssertion{
+			Handlers: map[string]gad.TypeAssertionHandler{
+				"reader": func(v gad.Object) (ok bool) {
+					_, ok = v.(gad.Reader)
+					return
+				},
+			},
+		},
+	}
+}
+
+func NamedArgOfReader(name string) *gad.NamedArgVar {
+	return &gad.NamedArgVar{
+		Name: name,
+		TypeAssertion: &gad.TypeAssertion{
+			Handlers: map[string]gad.TypeAssertionHandler{
+				"writer": func(v gad.Object) (ok bool) {
+					_, ok = v.(gad.Writer)
+					return
+				},
+			},
+		},
+	}
+}