added IsObject IsArray helper functions

gjson.go

@@ -187,6 +187,16 @@ func (t Result) Array() []Result {
 	return r.a
 }
 
+// IsObject returns true if the result value is a JSON object.
+func (t Result) IsObject() bool {
+	return t.Type == JSON && len(t.Raw) > 0 && t.Raw[0] == '{'
+}
+
+// IsObject returns true if the result value is a JSON array.
+func (t Result) IsArray() bool {
+	return t.Type == JSON && len(t.Raw) > 0 && t.Raw[0] == '['
+}
+
 // ForEach iterates through values.
 // If the result represents a non-existent value, then no values will be iterated.
 // If the result is an Object, the iterator will pass the key and value of each item.

gjson_test.go

@@ -223,6 +223,23 @@ func TestBasic(t *testing.T) {
 	}
 }
 
+func TestIsArrayIsObject(t *testing.T) {
+	mtok := get(basicJSON, "loggy")
+	assert(t, mtok.IsObject())
+	assert(t, !mtok.IsArray())
+
+	mtok = get(basicJSON, "loggy.programmers")
+	assert(t, !mtok.IsObject())
+	assert(t, mtok.IsArray())
+
+	mtok = get(basicJSON, `loggy.programmers.#[tag="good"]#.firstName`)
+	assert(t, mtok.IsArray())
+
+	mtok = get(basicJSON, `loggy.programmers.0.firstName`)
+	assert(t, !mtok.IsObject())
+	assert(t, !mtok.IsArray())
+}
+
 func TestPlus53BitInts(t *testing.T) {
 	json := `{"IdentityData":{"GameInstanceId":634866135153775564}}`
 	value := Get(json, "IdentityData.GameInstanceId")