fix #373

Author: rafalbednarczuk

src/main/kotlin/com/fasterxml/jackson/module/kotlin/Extensions.kt

@@ -36,22 +36,22 @@ fun ObjectMapper.registerKotlinModule(): ObjectMapper = this.registerModule(kotl
 
 inline fun <reified T> jacksonTypeRef(): TypeReference<T> = object: TypeReference<T>() {}
 
-inline fun <reified T> ObjectMapper.readValue(jp: JsonParser): T = readValue(jp, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValues(jp: JsonParser): MappingIterator<T> = readValues(jp, jacksonTypeRef<T>())
+inline fun <reified T> ObjectMapper.readValue(jp: JsonParser): T = readValue(jp, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValues(jp: JsonParser): MappingIterator<T> = readValues(jp, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
 
-inline fun <reified T> ObjectMapper.readValue(src: File): T = readValue(src, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValue(src: URL): T = readValue(src, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValue(content: String): T = readValue(content, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValue(src: Reader): T = readValue(src, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValue(src: InputStream): T = readValue(src, jacksonTypeRef<T>())
-inline fun <reified T> ObjectMapper.readValue(src: ByteArray): T = readValue(src, jacksonTypeRef<T>())
+inline fun <reified T> ObjectMapper.readValue(src: File): T = readValue(src, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValue(src: URL): T = readValue(src, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValue(content: String): T = readValue(content, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValue(src: Reader): T = readValue(src, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValue(src: InputStream): T = readValue(src, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.readValue(src: ByteArray): T = readValue(src, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
 
-inline fun <reified T> ObjectMapper.treeToValue(n: TreeNode): T? = treeToValue(n, T::class.java)
-inline fun <reified T> ObjectMapper.convertValue(from: Any): T = convertValue(from, jacksonTypeRef<T>())
+inline fun <reified T> ObjectMapper.treeToValue(n: TreeNode): T? = treeToValue(n, T::class.java).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectMapper.convertValue(from: Any): T = convertValue(from, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
 
-inline fun <reified T> ObjectReader.readValueTyped(jp: JsonParser): T = readValue(jp, jacksonTypeRef<T>())
-inline fun <reified T> ObjectReader.readValuesTyped(jp: JsonParser): Iterator<T> = readValues(jp, jacksonTypeRef<T>())
-inline fun <reified T> ObjectReader.treeToValue(n: TreeNode): T? = treeToValue(n, T::class.java)
+inline fun <reified T> ObjectReader.readValueTyped(jp: JsonParser): T = readValue(jp, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectReader.readValuesTyped(jp: JsonParser): Iterator<T> = readValues(jp, jacksonTypeRef<T>()).throwIfNullableTypeIsNull()
+inline fun <reified T> ObjectReader.treeToValue(n: TreeNode): T? = treeToValue(n, T::class.java).throwIfNullableTypeIsNull()
 
 internal fun JsonMappingException.wrapWithPath(refFrom: Any?, refFieldName: String) = JsonMappingException.wrapWithPath(this, refFrom, refFieldName)
 internal fun JsonMappingException.wrapWithPath(refFrom: Any?, index: Int) = JsonMappingException.wrapWithPath(this, refFrom, index)
@@ -64,4 +64,11 @@ inline fun <reified T : Any> SimpleModule.addSerializer(kClass: KClass<T>, seria
 inline fun <reified T : Any> SimpleModule.addDeserializer(kClass: KClass<T>, deserializer: JsonDeserializer<T>) = this.apply {
     addDeserializer(kClass.java, deserializer)
     addDeserializer(kClass.javaObjectType, deserializer)
+}
+
+inline fun <reified T> T.throwIfNullableTypeIsNull(): T {
+    if (null !is T && this == null) {
+        throw Exception()
+    }
+    return this
 }