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/*
* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
* that can be found in the license/LICENSE.txt file.
*/
package kotlin.js
private fun isInterfaceImpl(ctor: dynamic, iface: dynamic): Boolean {
if (ctor === iface) return true;
val self = ::isInterfaceImpl
return js(
"""
var metadata = ctor.${"$"}metadata${"$"};
if (metadata != null) {
var interfaces = metadata.interfaces;
for (var i = 0; i < interfaces.length; i++) {
if (self_0(interfaces[i], iface)) {
return true;
}
}
}
var superPrototype = ctor.prototype != null ? Object.getPrototypeOf(ctor.prototype) : null;
var superConstructor = superPrototype != null ? superPrototype.constructor : null;
return superConstructor != null && self_0(superConstructor, iface);
"""
).unsafeCast<Boolean>()
}
public fun isInterface(obj: dynamic, iface: dynamic): Boolean {
//TODO: val ctor = obj.constructor
val ctor = js("obj.constructor")
if (ctor == null) return false
return isInterfaceImpl(ctor, iface)
}
/*
internal interface ClassMetadata {
val simpleName: String
val interfaces: Array<dynamic>
}
// TODO: replace `isInterface` with the following
public fun isInterface(ctor: dynamic, IType: dynamic): Boolean {
if (ctor === IType) return true
val metadata = ctor.`$metadata$`.unsafeCast<ClassMetadata?>()
if (metadata !== null) {
val interfaces = metadata.interfaces
for (i in interfaces) {
if (isInterface(i, IType)) {
return true
}
}
}
var superPrototype = ctor.prototype
if (superPrototype !== null) {
superPrototype = js("Object.getPrototypeOf(superPrototype)")
}
val superConstructor = if (superPrototype !== null) {
superPrototype.constructor
} else null
return superConstructor != null && isInterface(superConstructor, IType)
}
*/
fun typeOf(obj: dynamic): String = js("typeof obj").unsafeCast<String>()
fun jsTypeOf(a: Any?): String = js("typeof a").unsafeCast<String>()
fun instanceOf(obj: dynamic, jsClass: dynamic) = js("obj instanceof jsClass").unsafeCast<Boolean>()
fun isObject(obj: dynamic): Boolean {
val objTypeOf = typeOf(obj)
return when (objTypeOf) {
"string" -> true
"number" -> true
"boolean" -> true
"function" -> true
else -> js("obj instanceof Object").unsafeCast<Boolean>()
}
}
private fun isJsArray(obj: Any): Boolean {
return js("Array.isArray(obj)").unsafeCast<Boolean>()
}
public fun isArray(obj: Any): Boolean {
return isJsArray(obj) && js("!obj.\$type\$").unsafeCast<Boolean>()
}
public fun isArrayish(o: dynamic) =
isJsArray(o) || js("ArrayBuffer.isView(o)").unsafeCast<Boolean>()
public fun isChar(c: Any): Boolean {
return js("throw Error(\"isChar is not implemented\")").unsafeCast<Boolean>()
}
// TODO: Distinguish Boolean/Byte and Short/Char
public fun isBooleanArray(a: dynamic): Boolean = isJsArray(a) && a.`$type$` == "BooleanArray"
public fun isByteArray(a: dynamic): Boolean = js("a instanceof Int8Array").unsafeCast<Boolean>()
public fun isShortArray(a: dynamic): Boolean = js("a instanceof Int16Array").unsafeCast<Boolean>()
public fun isCharArray(a: dynamic): Boolean = isJsArray(a) && a.`$type$` == "CharArray"
public fun isIntArray(a: dynamic): Boolean = js("a instanceof Int32Array").unsafeCast<Boolean>()
public fun isFloatArray(a: dynamic): Boolean = js("a instanceof Float32Array").unsafeCast<Boolean>()
public fun isDoubleArray(a: dynamic): Boolean = js("a instanceof Float64Array").unsafeCast<Boolean>()
public fun isLongArray(a: dynamic): Boolean = isJsArray(a) && a.`$type$` == "LongArray"
internal fun jsIn(x: String, y: dynamic): Boolean = js("x in y")
internal fun jsGetPrototypeOf(jsClass: dynamic) = js("Object.getPrototypeOf(jsClass)")
public fun jsIsType(obj: dynamic, jsClass: dynamic): Boolean {
if (jsClass === js("Object")) {
return isObject(obj)
}
if (obj == null || jsClass == null || (typeOf(obj) != "object" && typeOf(obj) != "function")) {
return false
}
if (typeOf(jsClass) == "function" && instanceOf(obj, jsClass)) {
return true
}
var proto = jsGetPrototypeOf(jsClass)
var constructor = proto?.constructor
if (constructor != null && jsIn("${'$'}metadata${'$'}", constructor)) {
var metadata = constructor.`$metadata$`
if (metadata.kind === "object") {
return obj === jsClass
}
}
var klassMetadata = jsClass.`$metadata$`
// In WebKit (JavaScriptCore) for some interfaces from DOM typeof returns "object", nevertheless they can be used in RHS of instanceof
if (klassMetadata == null) {
return instanceOf(obj, jsClass)
}
if (klassMetadata.kind === "interface" && obj.constructor != null) {
return isInterfaceImpl(obj.constructor, jsClass)
}
return false
}
fun isNumber(a: dynamic) = jsTypeOf(a) == "number" || a is Long
fun isComparable(value: dynamic): Boolean {
var type = jsTypeOf(value)
return type == "string" ||
type == "boolean" ||
isNumber(value) ||
isInterface(value, Comparable::class.js)
}
fun isCharSequence(value: dynamic): Boolean =
jsTypeOf(value) == "string" || isInterface(value, CharSequence::class.js)
|
