+ Add ParseInt & ParseFloat.

packages/suntori/README.md

@@ -132,6 +132,8 @@ const json = serialize(doge)  // json should be "equal" to dataSource.
 
 ## More decorators
 
+There are also some additional decorators, providing extra functionalities.
+
 ### @JsonString
 
 ```ts
@@ -223,6 +225,29 @@ console.log(a.numNullable)   // null
 console.log(a.numNullable2)  // 0, only got null if payload were null.
 ```
 
+### @ParseInt and @ParseFloat
+
+```ts
+ @Serializable()
+ class A {
+   @JsonProperty()
+   @ParseInt()
+   readonly int: number = 0
+
+   @JsonProperty()
+   @ParseFloat()
+   readonly float: number = 0
+ }
+
+ const a = deserialize({
+   int: '10',
+   float: '0.1'
+ }, A)
+
+ console.log(a.int)    // 10
+ console.log(a.float)  // 0.1
+```
+
 ## License
 
 Apache-2.0

packages/suntori/lib/config/meta.ts

@@ -3,6 +3,8 @@ const META_KEY_SERIALIZABLE = 'suntori:serializable'
 const META_KEY_JSON_STRING = 'suntori:jsonString'
 const META_KEY_DYNAMIC_KEY = 'suntori:dynamicKey'
 const META_KEY_NULLABLE = 'suntori:nullable'
+const META_KEY_PARSE_INT = 'suntori:parseInt'
+const META_KEY_PARSE_FLOAT = 'suntori:parseFloat'
 const META_KEY_JSON_IGNORE = 'suntori:jsonIgnore'
 
 export {
@@ -11,5 +13,7 @@ export {
   META_KEY_JSON_STRING,
   META_KEY_DYNAMIC_KEY,
   META_KEY_NULLABLE,
+  META_KEY_PARSE_INT,
+  META_KEY_PARSE_FLOAT,
   META_KEY_JSON_IGNORE
 }

packages/suntori/lib/deserialize/decorator.ts

@@ -1,4 +1,4 @@
-import { META_KEY_NULLABLE, META_KEY_DYNAMIC_KEY, META_KEY_JSON_STRING } from '../config/meta'
+import { META_KEY_NULLABLE, META_KEY_DYNAMIC_KEY, META_KEY_JSON_STRING, META_KEY_PARSE_INT, META_KEY_PARSE_FLOAT } from '../config/meta'
 import { createPlainObject } from '../utils/object'
 
 /**
@@ -113,6 +113,44 @@ function Nullable () {
   return defineDecorator(META_KEY_NULLABLE)
 }
 
+/**
+ * A prop that decorated by this decorator will be parsed as int in force.
+ *
+ * @example
+ * @Serializable()
+ * class A {
+ *   @JsonProperty()
+ *   @ParseInt()
+ *   readonly id: number = 0
+ * }
+ *
+ * const a = deserialize({
+ *   id: '10'
+ * }, A)
+ */
+function ParseInt () {
+  return defineDecorator(META_KEY_PARSE_INT)
+}
+
+/**
+ * A prop that decorated by this decorator will be parsed as float in force.
+ *
+ * @example
+ * @Serializable()
+ * class A {
+ *   @JsonProperty()
+ *   @ParseFloat()
+ *   readonly value: number = 0
+ * }
+ *
+ * const a = deserialize({
+ *   value: '10.24'
+ * }, A)
+ */
+function ParseFloat () {
+  return defineDecorator(META_KEY_PARSE_FLOAT)
+}
+
 /**
  * Check a meta registry has target prop assigned.
  *
@@ -129,5 +167,7 @@ export {
   JsonString,
   DynamicKey,
   Nullable,
+  ParseInt,
+  ParseFloat,
   checkMetaRegistryHasProp
 }

packages/suntori/lib/deserialize/index.ts

@@ -3,7 +3,9 @@ import {
   META_KEY_DYNAMIC_KEY,
   META_KEY_JSON_PROPERTY,
   META_KEY_JSON_STRING,
-  META_KEY_SERIALIZABLE
+  META_KEY_SERIALIZABLE,
+  META_KEY_PARSE_INT,
+  META_KEY_PARSE_FLOAT
 } from '../config/meta'
 import { ConstructorOf, IAllPropertiesMetaData, IJsonPropertyOption } from '../types'
 import { checkIsSerializable } from '../utils/meta'
@@ -127,6 +129,21 @@ function createModelValueFromJson (
   }
 
   if (expectedType === Number) {
+    const doIntParse = checkMetaRegistryHasProp(META_KEY_PARSE_INT, propName, instance)
+    const doFloatParse = checkMetaRegistryHasProp(META_KEY_PARSE_FLOAT, propName, instance)
+
+    if (isString(payload)) {
+      if (doIntParse) {
+        const parsedValue = parseInt(payload)
+        return isNaN(parsedValue) ? fallbackValue : parsedValue
+      }
+
+      if (doFloatParse) {
+        const parsedValue = parseFloat(payload)
+        return isNaN(parsedValue) ? fallbackValue : parsedValue
+      }
+    }
+
     return isNumber(payload) ? payload : fallbackValue
   }
 

packages/suntori/lib/index.ts

@@ -1,4 +1,4 @@
 export { deserialize, Serializable, JsonProperty } from './deserialize'
-export { JsonString, DynamicKey, Nullable } from './deserialize/decorator'
+export { JsonString, DynamicKey, Nullable, ParseInt, ParseFloat } from './deserialize/decorator'
 export { serialize, JsonIgnore } from './serialize'
 export { cloneModel } from './utils/clone-model'