JS: replace noImpl with definedExternally in IDL2K

libraries/tools/idl2k/src/main/kotlin/gen.kt

@@ -35,7 +35,7 @@ fun generateFunction(repository: Repository, function: Operation, functionName:
                         GenerateAttribute(
                                 name = it.name,
                                 type = mappedType,
-                                initializer = if (it.defaultValue != null) "noImpl" else null,
+                                initializer = if (it.defaultValue != null) "definedExternally" else null,
                                 getterSetterNoImpl = false,
                                 override = false,
                                 kind = AttributeKind.ARGUMENT,
@@ -92,7 +92,7 @@ fun generateAttribute(putNoImpl: Boolean, repository: Repository, attribute: Att
                         mapLiteral(attribute.defaultValue, mapType(repository, attribute.type))
                     }
                     else if (attribute.defaultValue != null) {
-                        "noImpl"
+                        "definedExternally"
                     }
                     else {
                         null

libraries/tools/idl2k/src/main/kotlin/idl.kt

@@ -213,7 +213,7 @@ class AttributeVisitor(private val readOnly: Boolean = false, private val static
 
     override fun visitOptionalOrRequiredArgument(ctx: WebIDLParser.OptionalOrRequiredArgumentContext): Attribute {
         if (ctx.children?.any { it is TerminalNode && it.text == "optional" } ?: false) {
-            defaultValue = "noImpl"
+            defaultValue = "definedExternally"
         }
         if (ctx.children?.any { it is TerminalNode && it.text == "required" } ?: false) {
             required = true

libraries/tools/idl2k/src/main/kotlin/render.kt

@@ -74,11 +74,11 @@ private fun Appendable.renderAttributeDeclarationAsProperty(arg: GenerateAttribu
     appendln()
     if (arg.getterNoImpl) {
         indent(commented, level + 1)
-        appendln("get() = noImpl")
+        appendln("get() = definedExternally")
     }
     if (arg.setterNoImpl) {
         indent(commented, level + 1)
-        appendln("set(value) = noImpl")
+        appendln("set(value) = definedExternally")
     }
 }
 
@@ -87,7 +87,7 @@ private val keywords = setOf("interface", "is", "as")
 private fun String.parse() = if (this.startsWith("0x")) BigInteger(this.substring(2), 16) else BigInteger(this)
 private fun String.replaceWrongConstants(type: Type) = when {
     this == "null" && type.nullable -> "null"
-    this == "noImpl" || type is SimpleType && type.type == "Int" && parse() > BigInteger.valueOf(Int.MAX_VALUE.toLong()) -> "noImpl"
+    this == "definedExternally" || type is SimpleType && type.type == "Int" && parse() > BigInteger.valueOf(Int.MAX_VALUE.toLong()) -> "definedExternally"
     type is SimpleType && type.type == "Double" && this.matches("[0-9]+".toRegex()) -> "${this}.0"
     else -> this
 }