com.google.gwt.emul.javaemul.internal.JsUtils Maven / Gradle / Ivy
/*
* Copyright 2015 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package javaemul.internal;
/**
* Provides an interface for simple JavaScript idioms that can not be expressed in Java.
*/
public class JsUtils {
public static native int compare(String a, String b) /*-{
return a == b ? 0 : (a < b ? -1 : 1);
}-*/;
public static native boolean isFinite(double d) /*-{
return isFinite(d);
}-*/;
public static native boolean isNaN(double d) /*-{
return isNaN(d);
}-*/;
public static native int parseInt(String s, int radix) /*-{
return parseInt(s, radix);
}-*/;
public static native boolean isUndefined(Object value) /*-{
return value === undefined;
}-*/;
public static native String unsafeCastToString(Object string) /*-{
return string;
}-*/;
public static native double unsafeCastToDouble(Object number) /*-{
return number;
}-*/;
public static native boolean unsafeCastToBoolean(Object bool) /*-{
return bool;
}-*/;
public static native T getProperty(Object map, String key) /*-{
return map[key];
}-*/;
public static native void setPropertySafe(Object map, String key, Object value) /*-{
try {
// This may throw exception in strict mode.
map[key] = value;
} catch(ignored) { }
}-*/;
public static native int getIntProperty(Object map, String key) /*-{
return map[key];
}-*/;
public static native void setIntProperty(Object map, String key, int value) /*-{
map[key] = value;
}-*/;
public static native String typeOf(Object o) /*-{
return typeof o;
}-*/;
public static native boolean hasComparableTypeMarker(Object o) /*-{
return o.$implements__java_lang_Comparable;
}-*/;
public static native boolean hasCharSequenceTypeMarker(Object o) /*-{
return o.$implements__java_lang_CharSequence;
}-*/;
}