Mark builtins and stblib functions with 'operator'

generators/src/org/jetbrains/kotlin/generators/builtins/arrayIterators.kt

@@ -35,7 +35,7 @@ class GenerateArrayIterators(out: PrintWriter) : BuiltInsSourceGenerator(out) {
         }
         for (kind in PrimitiveType.values()) {
             val s = kind.capitalized
-            out.println("public fun iterator(array: ${s}Array): ${s}Iterator = Array${s}Iterator(array)")
+            out.println("public operator fun iterator(array: ${s}Array): ${s}Iterator = Array${s}Iterator(array)")
         }
     }
 }

generators/src/org/jetbrains/kotlin/generators/builtins/arrays.kt

@@ -34,15 +34,15 @@ class GenerateArrays(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             out.println(" */")
             out.println("public class ${s}Array(size: Int) : Cloneable {")
             out.println("    /** Returns the array element at the given [index]. This method can be called using the index operator. */")
-            out.println("    public fun get(index: Int): $s")
+            out.println("    public operator fun get(index: Int): $s")
             out.println("    /** Sets the element at the given [index] to the given [value]. This method can be called using the index operator. */")
-            out.println("    public fun set(index: Int, value: $s): Unit")
+            out.println("    public operator fun set(index: Int, value: $s): Unit")
             out.println()
             out.println("    /** Returns the number of elements in the array. */")
             out.println("    public fun size(): Int")
             out.println()
             out.println("    /** Creates an iterator over the elements of the array. */")
-            out.println("    public fun iterator(): ${s}Iterator")
+            out.println("    public operator fun iterator(): ${s}Iterator")
             out.println()
             out.println("    public override fun clone(): ${s}Array")
             out.println("}")

generators/src/org/jetbrains/kotlin/generators/builtins/functions.kt

@@ -77,7 +77,7 @@ class GenerateFunctions(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             val suffix = if (i == 1) "" else "s"
             out.println("    /** Invokes the function with the specified argument${suffix}. */")
         }
-        out.print("    public fun invoke(")
+        out.print("    public operator fun invoke(")
         for (j in 1..i) {
             out.print("p$j: P$j")
             if (j < i) {

generators/src/org/jetbrains/kotlin/generators/builtins/primitives.kt

@@ -98,7 +98,7 @@ class GeneratePrimitives(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             out.println(" */")
             out.print("    public ")
             if (otherKind == thisKind) out.print("override ")
-            out.println("fun compareTo(other: ${otherKind.capitalized}): Int")
+            out.println("operator fun compareTo(other: ${otherKind.capitalized}): Int")
         }
         out.println()
     }
@@ -113,7 +113,7 @@ class GeneratePrimitives(out: PrintWriter) : BuiltInsSourceGenerator(out) {
         for (otherKind in PrimitiveType.onlyNumeric) {
             val returnType = getOperatorReturnType(thisKind, otherKind)
             out.println("    /** $doc */")
-            out.println("    public fun $name(other: ${otherKind.capitalized}): $returnType")
+            out.println("    public operator fun $name(other: ${otherKind.capitalized}): $returnType")
         }
         out.println()
     }
@@ -122,7 +122,7 @@ class GeneratePrimitives(out: PrintWriter) : BuiltInsSourceGenerator(out) {
         for (otherKind in PrimitiveType.onlyNumeric) {
             val returnType = if (otherKind.ordinal() > thisKind.ordinal()) otherKind else thisKind
             out.println("     /** Creates a range from this value to the specified [other] value. */")
-            out.println("    public fun rangeTo(other: ${otherKind.capitalized}): ${returnType.capitalized}Range")
+            out.println("    public operator fun rangeTo(other: ${otherKind.capitalized}): ${returnType.capitalized}Range")
         }
         out.println()
 
@@ -133,7 +133,7 @@ class GeneratePrimitives(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             val returnType = if (kind in listOf(PrimitiveType.SHORT, PrimitiveType.BYTE, PrimitiveType.CHAR) &&
                                  name in listOf("plus", "minus")) "Int" else kind.capitalized
             out.println("    /** $doc */")
-            out.println("    public fun $name(): $returnType")
+            out.println("    public operator fun $name(): $returnType")
         }
         out.println()
     }