Value extensions to access primitives

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/Meta.kt

@@ -263,6 +263,4 @@ interface Metoid {
     val meta: Meta
 }
 
-fun Value.toMeta() = buildMeta { Meta.VALUE_KEY to this }
-
 fun Meta.isEmpty() = this === EmptyMeta || this.items.isEmpty()

dataforge-meta/src/commonMain/kotlin/hep/dataforge/names/Name.kt

@@ -147,6 +147,8 @@ operator fun Name.plus(other: Name): Name = Name(this.tokens + other.tokens)
 
 operator fun Name.plus(other: String): Name = this + other.toName()
 
+operator fun Name.plus(other: NameToken): Name = Name(tokens + other)
+
 fun Name.appendLeft(other: String): Name = NameToken(other) + this
 
 fun NameToken.asName() = Name(listOf(this))

dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/Value.kt

@@ -45,6 +45,8 @@ interface Value {
 
     override fun equals(other: Any?): Boolean
 
+    override fun hashCode(): Int
+
     companion object {
         const val TYPE = "value"
 
@@ -86,14 +88,9 @@ object Null : Value {
     override fun toString(): String = value.toString()
 
     override fun equals(other: Any?): Boolean = other === Null
+    override fun hashCode(): Int = 0
 }
 
-/**
- * Check if value is null
- */
-fun Value.isNull(): Boolean = this == Null
-
-
 /**
  * Singleton true value
  */
@@ -106,7 +103,7 @@ object True : Value {
     override fun toString(): String = value.toString()
 
     override fun equals(other: Any?): Boolean = other === True
-
+    override fun hashCode(): Int = 1
 }
 
 /**
@@ -121,10 +118,9 @@ object False : Value {
     override fun toString(): String = True.value.toString()
 
     override fun equals(other: Any?): Boolean = other === False
+    override fun hashCode(): Int = -1
 }
 
-val Value.boolean get() = this == True || this.list.firstOrNull() == True || (type == ValueType.STRING && string.toBoolean())
-
 class NumberValue(override val number: Number) : Value {
     override val value: Any? get() = number
     override val type: ValueType get() = ValueType.NUMBER
@@ -183,7 +179,7 @@ class ListValue(override val list: List<Value>) : Value {
         }
     }
 
-    override val value: Any? get() = list
+    override val value: List<Value> get() = list
     override val type: ValueType get() = list.first().type
     override val number: Number get() = list.first().number
     override val string: String get() = list.first().string
@@ -194,7 +190,7 @@ class ListValue(override val list: List<Value>) : Value {
         if (this === other) return true
         if (other !is Value) return false
         if (other is DoubleArrayValue) {
-
+            return DoubleArray(list.size) { list[it].number.toDouble() }.contentEquals(other.value)
         }
         return list == other.list
     }
@@ -206,12 +202,6 @@ class ListValue(override val list: List<Value>) : Value {
 
 }
 
-/**
- * Check if value is list
- */
-fun Value.isList(): Boolean = this.list.size > 1
-
-
 fun Number.asValue(): Value = NumberValue(this)
 
 fun Boolean.asValue(): Value = if (this) True else False

dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/valueEstensions.kt

@@ -0,0 +1,37 @@
+package hep.dataforge.values
+
+import hep.dataforge.meta.Meta
+import hep.dataforge.meta.buildMeta
+
+/**
+ * Check if value is null
+ */
+fun Value.isNull(): Boolean = this == Null
+
+/**
+ * Check if value is list
+ */
+fun Value.isList(): Boolean = this.list.size > 1
+
+val Value.boolean
+    get() = this == True
+            || this.list.firstOrNull() == True
+            || (type == ValueType.STRING && string.toBoolean())
+
+
+val Value.int get() = number.toInt()
+val Value.double get() = number.toDouble()
+val Value.float get() = number.toFloat()
+val Value.long get() = number.toLong()
+
+val Value.stringList: List<String> get() = list.map { it.string }
+
+val Value.doubleArray: DoubleArray
+    get() = if (this is DoubleArrayValue) {
+        value
+    } else {
+        DoubleArray(list.size) { list[it].double }
+    }
+
+
+fun Value.toMeta() = buildMeta { Meta.VALUE_KEY to this }