refactor: 新增 common 子包——XML/JSON 共用部分 + 单 import 全量可用
- src/common/(package simapi_serialization.common): Annotations.cj(@SerializerPropertyName/@SerializerIgnore)、 ReflectionCache.cj(字段元数据 + 继承链缓存)、NamingPolicy.cj(PropertyNamingPolicy) - 根锚点 public import common.* + json.*:import simapi_serialization.* 即可用全部 - JsonOption.propertyNamingPolicy 引用 common 枚举;getFields 改收命名策略 - 枚举值 PropertyNamingPolicy.None → Keep(None 与内置 Option.None 构造器同名冲突) - JsonWriter/JsonReader 单类 import common,避免循环依赖 - 测试/独立项目验证:16 用例全绿;serialization_test 单 import 即可运行
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/*
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* Copyright (c) 2025 SimcuTeam. All rights reserved.
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* ReflectionCache:字段元数据(含继承链、命名策略、@SerializerPropertyName/@SerializerIgnore)与缓存。
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*
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* 已知限制(平台级):
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* - InstanceVariableInfo.getValue/setValue 有「声明类严格类型校验」,父类字段无法用子类实例读写,
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* 故 v1 仅枚举运行时类自身声明的 var 字段(父类字段暂不序列化)。
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*/
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package simapi_serialization.common
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import std.collection.*
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import std.reflect.*
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/**
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* 单个字段的序列化元数据。
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*/
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public class FieldMetadata {
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/// 反射字段名(如 _name)
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public var name: String = ""
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/// JSON 名称(@SerializerPropertyName 优先,否则按命名策略)
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public var jsonName: String = ""
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/// 是否忽略(@SerializerIgnore)
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public var ignore: Bool = false
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/// 字段类型
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public var typeInfo: ?TypeInfo = None
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/// 字段读写句柄
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public var variable: ?InstanceVariableInfo = None
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/// 是否可变(反序列化只写 var)
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public var mutable: Bool = false
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public init() {}
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}
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/**
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* 字段反射缓存:类 → 字段列表(首次反射,后续复用)。
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*/
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public class ReflectionCache {
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private init() {}
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private static let _cache = HashMap<String, ArrayList<FieldMetadata>>()
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/// 类型 → 是否有 @SerializerParent 宏生成的 exportJsonFields(Bool)
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private static let _exportCache = HashMap<String, Bool>()
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/// 类型 → 是否有 @SerializerParent 宏生成的 importJsonFields(Bool)
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private static let _importCache = HashMap<String, Bool>()
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/**
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* 该类型是否含 @SerializerParent 宏生成的导出静态方法(含缓存)。
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*/
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public static func hasExportFields(typeInfo: ClassTypeInfo): Bool {
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hasParentMethod(typeInfo, "exportJsonFields", _exportCache)
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}
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/**
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* 该类型是否含 @SerializerParent 宏生成的导入静态方法(含缓存)。
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*/
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public static func hasImportFields(typeInfo: ClassTypeInfo): Bool {
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hasParentMethod(typeInfo, "importJsonFields", _importCache)
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}
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private static func hasParentMethod(typeInfo: ClassTypeInfo, name: String, cache: HashMap<String, Bool>): Bool {
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let key = typeInfo.qualifiedName
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if (let Some(cached) <- cache.get(key)) {
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return cached
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}
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let found = try {
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if (name == "exportJsonFields") {
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typeInfo.getStaticFunction(name, [typeInfo])
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} else {
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typeInfo.getStaticFunction(name, [typeInfo, TypeInfo.of<HashMap<String, Any>>()])
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}
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true
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} catch (_: Exception) {
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false
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}
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cache[key] = found
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found
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}
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/**
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* 获取类型的字段元数据(含缓存)。
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* @param typeInfo 目标类类型。
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* @param namingPolicy 命名策略。
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* @return 字段列表(仅该类自身声明的 var 字段)。
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*/
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public static func getFields(typeInfo: ClassTypeInfo, namingPolicy: PropertyNamingPolicy): ArrayList<FieldMetadata> {
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let key = typeInfo.qualifiedName
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if (let Some(cached) <- _cache.get(key)) {
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return cached
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}
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var fields = ArrayList<FieldMetadata>()
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for (v in typeInfo.instanceVariables) {
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var meta = FieldMetadata()
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meta.name = v.name
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meta.variable = Some(v)
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meta.typeInfo = Some(v.typeInfo)
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meta.mutable = v.isMutable()
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// @SerializerIgnore
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if (v.findAnnotation<SerializerIgnore>().isSome()) {
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meta.ignore = true
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}
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// @SerializerPropertyName 优先
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var jsonName = ""
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if (let Some(jsonProp) <- v.findAnnotation<SerializerPropertyName>()) {
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jsonName = jsonProp.name
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} else {
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jsonName = applyNamingPolicy(v.name, namingPolicy)
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}
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meta.jsonName = jsonName
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fields.add(meta)
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}
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_cache[key] = fields
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fields
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}
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/**
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* 应用属性命名策略。
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* 说明:不剥除字段名前导下划线——`_name` 原样输出 `_name`;
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* 策略只影响字母大小写(CamelCase 首字母小写、SnakeCase 大写转下划线)。
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*/
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public static func applyNamingPolicy(fieldName: String, policy: PropertyNamingPolicy): String {
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match (policy) {
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case PropertyNamingPolicy.Keep => fieldName
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case PropertyNamingPolicy.CamelCase => toCamelCase(fieldName)
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case PropertyNamingPolicy.SnakeCase => toSnakeCase(fieldName)
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}
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}
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private static func toCamelCase(s: String): String {
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if (s.isEmpty()) {
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return s
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}
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let first = s[0..1].toAsciiLower()
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"${first}${s[1..]}"
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}
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private static func toSnakeCase(s: String): String {
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if (s.isEmpty()) {
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return s
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}
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var sb = StringBuilder()
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var first = true
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for (c in s.runes()) {
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let ch = UInt32(c)
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let isUpper = ch >= 0x41 && ch <= 0x5A
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if (isUpper) {
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if (!first) {
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sb.append("_")
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}
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sb.append(Rune(ch + 0x20))
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} else {
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sb.append(c)
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}
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first = false
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}
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sb.toString()
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}
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}
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