fix KtormTableName target bug

ts-core/src/main/kotlin/cn/tursom/core/context/ArrayContextEnv.kt

@@ -7,14 +7,16 @@ class ArrayContextEnv : ContextEnv {
   val envId = ContextEnv.newEnvId()
   private val idGenerator = AtomicInteger()
 
+  override fun emptyContext(): Context = ArrayContext(envId, idGenerator, empty = true)
   override fun newContext(): Context = ArrayContext(envId, idGenerator)
   override fun <T> newKey() = ContextKey<T>(envId, idGenerator.getAndIncrement())
 
   private class ArrayContext(
     override val envId: Int,
     private val idGenerator: AtomicInteger,
+    empty: Boolean = false,
   ) : Context {
-    private var array = arrayOfNulls<Any?>(idGenerator.get())
+    private var array = if (empty) emptyArray() else arrayOfNulls<Any?>(idGenerator.get())
 
     override operator fun <T> get(key: ContextKey<T>): T? {
       checkEnv(key)

ts-core/src/main/kotlin/cn/tursom/core/context/Context.kt

@@ -3,6 +3,17 @@ package cn.tursom.core.context
 
 interface Context {
   val envId: Int
+  operator fun <T> get(key: DefaultContextKey<T>): T {
+    var value = get(key as ContextKey<T>)
+    return if (value != null) {
+      value
+    } else {
+      value = key.provider()
+      set(key, value)
+      value
+    }
+  }
+
   operator fun <T> get(key: ContextKey<T>): T?
   operator fun <T> set(key: ContextKey<T>, value: T)
 

ts-core/src/main/kotlin/cn/tursom/core/context/ContextEnv.kt

@@ -8,6 +8,7 @@ interface ContextEnv {
     fun newEnvId() = contextEnvIdGenerator.incrementAndGet()
   }
 
+  fun emptyContext(): Context = newContext()
   fun newContext(): Context
   fun <T> newKey(): ContextKey<T>
 }

ts-core/src/main/kotlin/cn/tursom/core/context/ContextKey.kt

@@ -1,9 +1,11 @@
 package cn.tursom.core.context
 
-data class ContextKey<T>(
+open class ContextKey<T>(
   val envId: Int,
   val id: Int,
 ) {
+  fun withDefault(provider: () -> T) = DefaultContextKey(envId, id, provider)
+
   override fun hashCode(): Int {
     return id
   }
@@ -17,4 +19,8 @@ data class ContextKey<T>(
 
     return true
   }
+
+  override fun toString(): String {
+    return "ContextKey(envId=$envId, id=$id)"
+  }
 }

ts-core/src/main/kotlin/cn/tursom/core/context/DefaultContextKey.kt

@@ -0,0 +1,3 @@
+package cn.tursom.core.context
+
+class DefaultContextKey<T>(envId: Int, id: Int, val provider: () -> T) : ContextKey<T>(envId, id)