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/*
* Copyright (C)2005-2019 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
import jvm.Jvm;
@:coreApi
class Std {
public static inline function is(v:Dynamic, t:Dynamic):Bool {
return isOfType(v, t);
}
public static function isOfType(v:Dynamic, t:Dynamic):Bool {
if (v == null || t == null) {
return false;
}
var clt:java.lang.Class<Dynamic> = cast t;
if (clt == null) {
return false;
}
if (clt == cast java.lang.Object) {
return true;
}
clt = Jvm.getWrapperClass(clt);
if (clt == cast java.lang.Double.DoubleClass) {
// Haxe semantics: any number is assignable to Float
clt = cast java.lang.Number;
} else if (clt == cast java.lang.Integer.IntegerClass) {
if (!Jvm.instanceof(v, java.lang.Number)) {
return false;
}
var n = (cast v : java.lang.Number);
// Haxe semantics: 2.0 is an integer...
return n.doubleValue() == n.intValue();
}
return clt.isAssignableFrom((v : java.lang.Object).getClass());
}
public static function string(s:Dynamic):String {
return jvm.Jvm.toString(s);
}
public static function int(x:Float):Int {
return cast x;
}
public static function parseInt(x:String):Null<Int> {
if (x == null) {
return null;
}
var base = 10;
var len = x.length;
var foundCount = 0;
var sign = 0;
var firstDigitIndex = 0;
var lastDigitIndex = -1;
var previous = 0;
for (i in 0...len) {
var c = StringTools.fastCodeAt(x, i);
switch c {
case _ if ((c > 8 && c < 14) || c == 32):
if (foundCount > 0) {
return null;
}
continue;
case '-'.code if (foundCount == 0):
sign = -1;
case '+'.code if (foundCount == 0):
sign = 1;
case '0'.code if (foundCount == 0 || (foundCount == 1 && sign != 0)):
case 'x'.code | 'X'.code if (previous == '0'.code && ((foundCount == 1 && sign == 0) || (foundCount == 2 && sign != 0))):
base = 16;
case _ if ('0'.code <= c && c <= '9'.code):
case _ if (base == 16 && (('a'.code <= c && c <= 'z'.code) || ('A'.code <= c && c <= 'Z'.code))):
case _:
break;
}
if ((foundCount == 0 && sign == 0) || (foundCount == 1 && sign != 0)) {
firstDigitIndex = i;
}
foundCount++;
lastDigitIndex = i;
previous = c;
}
if (firstDigitIndex <= lastDigitIndex) {
var digits = x.substring(firstDigitIndex + (base == 16 ? 2 : 0), lastDigitIndex + 1);
return try {
(sign == -1 ? -1 : 1) * java.lang.Integer.parseInt(digits, base);
} catch (e:java.lang.NumberFormatException) {
null;
}
}
return null;
}
public static function parseFloat(x:String):Float {
if (x == null) {
return Math.NaN;
}
x = StringTools.ltrim(x);
var xn:java.NativeString = cast x;
var found = false,
hasDot = false,
hasSign = false,
hasE = false,
hasESign = false,
hasEData = false;
var i = -1;
while (++i < x.length) {
var chr:Int = cast xn.charAt(i);
if (chr >= '0'.code && chr <= '9'.code) {
if (hasE) {
hasEData = true;
}
found = true;
} else
switch (chr) {
case 'e'.code | 'E'.code if (!hasE):
hasE = true;
case '.'.code if (!hasDot):
hasDot = true;
case '-'.code, '+'.code if (!found && !hasSign):
hasSign = true;
case '-'.code | '+'.code if (found && !hasESign && hasE && !hasEData):
hasESign = true;
case _:
break;
}
}
if (hasE && !hasEData) {
i--;
if (hasESign)
i--;
}
if (i != x.length) {
x = x.substr(0, i);
}
return try java.lang.Double.DoubleClass.parseDouble(x) catch (e:Dynamic) Math.NaN;
}
inline public static function downcast<T:{}, S:T>(value:T, c:Class<S>):S {
return Std.isOfType(value, c) ? cast value : null;
}
@:deprecated('Std.instance() is deprecated. Use Std.downcast() instead.')
inline public static function instance<T:{}, S:T>(value:T, c:Class<S>):S {
return downcast(value, c);
}
public static function random(x:Int):Int {
if (x <= 0) {
return 0;
}
return Std.int(Math.random() * x);
}
}
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