Mark functions with 'operator' in JS stdlib

js/js.libraries/src/core/core.kt

@@ -15,7 +15,7 @@ public fun typeof(a: Any?): String = noImpl
 @native
 public val undefined: Nothing? = noImpl
 
-@native public fun <K, V> MutableMap<K, V>.set(key: K, value: V): V? = noImpl
+@native operator fun <K, V> MutableMap<K, V>.set(key: K, value: V): V? = noImpl
 
 @library
 public fun println() {}

js/js.libraries/src/core/dynamic.kt

@@ -19,7 +19,7 @@ package kotlin.js
 inline fun Any?.asDynamic(): dynamic = this
 
 // TODO add the support ES6 iterators
-public fun dynamic.iterator(): Iterator<dynamic> {
+operator fun dynamic.iterator(): Iterator<dynamic> {
     val r = this
 
     return when {

js/js.libraries/src/core/json.kt

@@ -1,8 +1,8 @@
 package kotlin.js
 
 @native public class Json() {
-    public fun get(propertyName: String): Any? = noImpl
+    operator fun get(propertyName: String): Any? = noImpl
-    public fun set(propertyName: String, value: Any?): Unit = noImpl
+    operator fun set(propertyName: String, value: Any?): Unit = noImpl
 }
 
 public fun json(vararg pairs: Pair<String, Any?>): Json {

js/js.libraries/src/core/kotlin_special.kt

@@ -285,7 +285,7 @@ public inline fun ShortArray.copyOfRange(fromIndex: Int, toIndex: Int): ShortArr
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun <T> Array<out T>.plus(element: T): Array<T> {
+public inline operator fun <T> Array<out T>.plus(element: T): Array<T> {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -293,7 +293,7 @@ public inline fun <T> Array<out T>.plus(element: T): Array<T> {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun BooleanArray.plus(element: Boolean): BooleanArray {
+public inline operator fun BooleanArray.plus(element: Boolean): BooleanArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -301,7 +301,7 @@ public inline fun BooleanArray.plus(element: Boolean): BooleanArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun ByteArray.plus(element: Byte): ByteArray {
+public inline operator fun ByteArray.plus(element: Byte): ByteArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -309,7 +309,7 @@ public inline fun ByteArray.plus(element: Byte): ByteArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun CharArray.plus(element: Char): CharArray {
+public inline operator fun CharArray.plus(element: Char): CharArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -317,7 +317,7 @@ public inline fun CharArray.plus(element: Char): CharArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun DoubleArray.plus(element: Double): DoubleArray {
+public inline operator fun DoubleArray.plus(element: Double): DoubleArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -325,7 +325,7 @@ public inline fun DoubleArray.plus(element: Double): DoubleArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun FloatArray.plus(element: Float): FloatArray {
+public inline operator fun FloatArray.plus(element: Float): FloatArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -333,7 +333,7 @@ public inline fun FloatArray.plus(element: Float): FloatArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun IntArray.plus(element: Int): IntArray {
+public inline operator fun IntArray.plus(element: Int): IntArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -341,7 +341,7 @@ public inline fun IntArray.plus(element: Int): IntArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun LongArray.plus(element: Long): LongArray {
+public inline operator fun LongArray.plus(element: Long): LongArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
@@ -349,70 +349,70 @@ public inline fun LongArray.plus(element: Long): LongArray {
  * Returns an array containing all elements of the original array and then the given [element].
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun ShortArray.plus(element: Short): ShortArray {
+public inline operator fun ShortArray.plus(element: Short): ShortArray {
     return this.asDynamic().concat(arrayOf(element))
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun <T> Array<out T>.plus(elements: Collection<T>): Array<T> {
+public operator fun <T> Array<out T>.plus(elements: Collection<T>): Array<T> {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun BooleanArray.plus(elements: Collection<Boolean>): BooleanArray {
+public operator fun BooleanArray.plus(elements: Collection<Boolean>): BooleanArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun ByteArray.plus(elements: Collection<Byte>): ByteArray {
+public operator fun ByteArray.plus(elements: Collection<Byte>): ByteArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun CharArray.plus(elements: Collection<Char>): CharArray {
+public operator fun CharArray.plus(elements: Collection<Char>): CharArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun DoubleArray.plus(elements: Collection<Double>): DoubleArray {
+public operator fun DoubleArray.plus(elements: Collection<Double>): DoubleArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun FloatArray.plus(elements: Collection<Float>): FloatArray {
+public operator fun FloatArray.plus(elements: Collection<Float>): FloatArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun IntArray.plus(elements: Collection<Int>): IntArray {
+public operator fun IntArray.plus(elements: Collection<Int>): IntArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun LongArray.plus(elements: Collection<Long>): LongArray {
+public operator fun LongArray.plus(elements: Collection<Long>): LongArray {
     return arrayPlusCollection(this, elements)
 }
 
 /**
  * Returns an array containing all elements of the original array and then all elements of the given [elements] collection.
  */
-public fun ShortArray.plus(elements: Collection<Short>): ShortArray {
+public operator fun ShortArray.plus(elements: Collection<Short>): ShortArray {
     return arrayPlusCollection(this, elements)
 }
 
@@ -420,7 +420,7 @@ public fun ShortArray.plus(elements: Collection<Short>): ShortArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun <T> Array<out T>.plus(elements: Array<out T>): Array<T> {
+public inline operator fun <T> Array<out T>.plus(elements: Array<out T>): Array<T> {
     return this.asDynamic().concat(elements)
 }
 
@@ -428,7 +428,7 @@ public inline fun <T> Array<out T>.plus(elements: Array<out T>): Array<T> {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun BooleanArray.plus(elements: BooleanArray): BooleanArray {
+public inline operator fun BooleanArray.plus(elements: BooleanArray): BooleanArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -436,7 +436,7 @@ public inline fun BooleanArray.plus(elements: BooleanArray): BooleanArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun ByteArray.plus(elements: ByteArray): ByteArray {
+public inline operator fun ByteArray.plus(elements: ByteArray): ByteArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -444,7 +444,7 @@ public inline fun ByteArray.plus(elements: ByteArray): ByteArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun CharArray.plus(elements: CharArray): CharArray {
+public inline operator fun CharArray.plus(elements: CharArray): CharArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -452,7 +452,7 @@ public inline fun CharArray.plus(elements: CharArray): CharArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun DoubleArray.plus(elements: DoubleArray): DoubleArray {
+public inline operator fun DoubleArray.plus(elements: DoubleArray): DoubleArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -460,7 +460,7 @@ public inline fun DoubleArray.plus(elements: DoubleArray): DoubleArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun FloatArray.plus(elements: FloatArray): FloatArray {
+public inline operator fun FloatArray.plus(elements: FloatArray): FloatArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -468,7 +468,7 @@ public inline fun FloatArray.plus(elements: FloatArray): FloatArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun IntArray.plus(elements: IntArray): IntArray {
+public inline operator fun IntArray.plus(elements: IntArray): IntArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -476,7 +476,7 @@ public inline fun IntArray.plus(elements: IntArray): IntArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun LongArray.plus(elements: LongArray): LongArray {
+public inline operator fun LongArray.plus(elements: LongArray): LongArray {
     return this.asDynamic().concat(elements)
 }
 
@@ -484,7 +484,7 @@ public inline fun LongArray.plus(elements: LongArray): LongArray {
  * Returns an array containing all elements of the original array and then all elements of the given [elements] array.
  */
 @Suppress("NOTHING_TO_INLINE")
-public inline fun ShortArray.plus(elements: ShortArray): ShortArray {
+public inline operator fun ShortArray.plus(elements: ShortArray): ShortArray {
     return this.asDynamic().concat(elements)
 }
 

libraries/tools/kotlin-stdlib-gen/src/templates/SpecialJS.kt

@@ -91,6 +91,8 @@ fun specialJS(): List<GenericFunction> {
 
 
     templates add f("plus(element: T)") {
+        operator(true)
+
         only(ArraysOfObjects, ArraysOfPrimitives)
         returns("SELF")
         returns(ArraysOfObjects) { "Array<T>" }
@@ -105,6 +107,8 @@ fun specialJS(): List<GenericFunction> {
     }
 
     templates add f("plus(elements: Collection<T>)") {
+        operator(true)
+
         only(ArraysOfObjects, ArraysOfPrimitives)
         returns("SELF")
         returns(ArraysOfObjects) { "Array<T>" }
@@ -118,6 +122,8 @@ fun specialJS(): List<GenericFunction> {
 
     // This overload can cause nulls if array size is expanding, hence different return overload
     templates add f("plus(elements: SELF)") {
+        operator(true)
+
         only(ArraysOfObjects, ArraysOfPrimitives)
         doc { "Returns an array containing all elements of the original array and then all elements of the given [elements] array." }
         inline(true)