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authoralexanders@b2ef00c0-3703-41da-baef-cfe82387ac0c <none@none>2010-02-03 00:50:41 +0000
committeralexanders@b2ef00c0-3703-41da-baef-cfe82387ac0c <none@none>2010-02-03 00:50:41 +0000
commit89bda83e0570ab87c6e449f5955613d5385e90b3 (patch)
treebeae82eff98e4b6e18e1521c49d48d087a8cef55 /trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java
parentd912ef9675f2e516df4eba081107729afbffe10c (diff)
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removed obsolete svn folder from hg tree
--HG-- extra : convert_revision : svn%3Ab2ef00c0-3703-41da-baef-cfe82387ac0c/trunk%408
Diffstat (limited to 'trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java')
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diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java
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--- a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java
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-/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (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.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Rhino code, released
- * May 6, 1999.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1997-1999
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Norris Boyd
- * Igor Bukanov
- * Mike McCabe
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License Version 2 or later (the "GPL"), in which
- * case the provisions of the GPL are applicable instead of those above. If
- * you wish to allow use of your version of this file only under the terms of
- * the GPL and not to allow others to use your version of this file under the
- * MPL, indicate your decision by deleting the provisions above and replacing
- * them with the notice and other provisions required by the GPL. If you do
- * not delete the provisions above, a recipient may use your version of this
- * file under either the MPL or the GPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-package org.mozilla.javascript;
-
-/**
- * This class implements the Number native object.
- *
- * See ECMA 15.7.
- *
- * @author Norris Boyd
- */
-final class NativeNumber extends IdScriptableObject
-{
- static final long serialVersionUID = 3504516769741512101L;
-
- private static final Object NUMBER_TAG = new Object();
-
- private static final int MAX_PRECISION = 100;
-
- static void init(Scriptable scope, boolean sealed)
- {
- NativeNumber obj = new NativeNumber(0.0);
- obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
- }
-
- private NativeNumber(double number)
- {
- doubleValue = number;
- }
-
- public String getClassName()
- {
- return "Number";
- }
-
- protected void fillConstructorProperties(IdFunctionObject ctor)
- {
- final int attr = ScriptableObject.DONTENUM |
- ScriptableObject.PERMANENT |
- ScriptableObject.READONLY;
-
- ctor.defineProperty("NaN", ScriptRuntime.NaNobj, attr);
- ctor.defineProperty("POSITIVE_INFINITY",
- ScriptRuntime.wrapNumber(Double.POSITIVE_INFINITY),
- attr);
- ctor.defineProperty("NEGATIVE_INFINITY",
- ScriptRuntime.wrapNumber(Double.NEGATIVE_INFINITY),
- attr);
- ctor.defineProperty("MAX_VALUE",
- ScriptRuntime.wrapNumber(Double.MAX_VALUE),
- attr);
- ctor.defineProperty("MIN_VALUE",
- ScriptRuntime.wrapNumber(Double.MIN_VALUE),
- attr);
-
- super.fillConstructorProperties(ctor);
- }
-
- protected void initPrototypeId(int id)
- {
- String s;
- int arity;
- switch (id) {
- case Id_constructor: arity=1; s="constructor"; break;
- case Id_toString: arity=1; s="toString"; break;
- case Id_toLocaleString: arity=1; s="toLocaleString"; break;
- case Id_toSource: arity=0; s="toSource"; break;
- case Id_valueOf: arity=0; s="valueOf"; break;
- case Id_toFixed: arity=1; s="toFixed"; break;
- case Id_toExponential: arity=1; s="toExponential"; break;
- case Id_toPrecision: arity=1; s="toPrecision"; break;
- default: throw new IllegalArgumentException(String.valueOf(id));
- }
- initPrototypeMethod(NUMBER_TAG, id, s, arity);
- }
-
- public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
- Scriptable thisObj, Object[] args)
- {
- if (!f.hasTag(NUMBER_TAG)) {
- return super.execIdCall(f, cx, scope, thisObj, args);
- }
- int id = f.methodId();
- if (id == Id_constructor) {
- double val = (args.length >= 1)
- ? ScriptRuntime.toNumber(args[0]) : 0.0;
- if (thisObj == null) {
- // new Number(val) creates a new Number object.
- return new NativeNumber(val);
- }
- // Number(val) converts val to a number value.
- return ScriptRuntime.wrapNumber(val);
- }
-
- // The rest of Number.prototype methods require thisObj to be Number
-
- if (!(thisObj instanceof NativeNumber))
- throw incompatibleCallError(f);
- double value = ((NativeNumber)thisObj).doubleValue;
-
- switch (id) {
-
- case Id_toString:
- case Id_toLocaleString:
- {
- // toLocaleString is just an alias for toString for now
- int base = (args.length == 0)
- ? 10 : ScriptRuntime.toInt32(args[0]);
- return ScriptRuntime.numberToString(value, base);
- }
-
- case Id_toSource:
- return "(new Number("+ScriptRuntime.toString(value)+"))";
-
- case Id_valueOf:
- return ScriptRuntime.wrapNumber(value);
-
- case Id_toFixed:
- return num_to(value, args, DToA.DTOSTR_FIXED,
- DToA.DTOSTR_FIXED, -20, 0);
-
- case Id_toExponential:
- return num_to(value, args, DToA.DTOSTR_STANDARD_EXPONENTIAL,
- DToA.DTOSTR_EXPONENTIAL, 0, 1);
-
- case Id_toPrecision:
- return num_to(value, args, DToA.DTOSTR_STANDARD,
- DToA.DTOSTR_PRECISION, 1, 0);
-
- default: throw new IllegalArgumentException(String.valueOf(id));
- }
- }
-
- public String toString() {
- return ScriptRuntime.numberToString(doubleValue, 10);
- }
-
- private static String num_to(double val,
- Object[] args,
- int zeroArgMode, int oneArgMode,
- int precisionMin, int precisionOffset)
- {
- int precision;
- if (args.length == 0) {
- precision = 0;
- oneArgMode = zeroArgMode;
- } else {
- /* We allow a larger range of precision than
- ECMA requires; this is permitted by ECMA. */
- precision = ScriptRuntime.toInt32(args[0]);
- if (precision < precisionMin || precision > MAX_PRECISION) {
- String msg = ScriptRuntime.getMessage1(
- "msg.bad.precision", ScriptRuntime.toString(args[0]));
- throw ScriptRuntime.constructError("RangeError", msg);
- }
- }
- StringBuffer sb = new StringBuffer();
- DToA.JS_dtostr(sb, oneArgMode, precision + precisionOffset, val);
- return sb.toString();
- }
-
-// #string_id_map#
-
- protected int findPrototypeId(String s)
- {
- int id;
-// #generated# Last update: 2007-05-09 08:15:50 EDT
- L0: { id = 0; String X = null; int c;
- L: switch (s.length()) {
- case 7: c=s.charAt(0);
- if (c=='t') { X="toFixed";id=Id_toFixed; }
- else if (c=='v') { X="valueOf";id=Id_valueOf; }
- break L;
- case 8: c=s.charAt(3);
- if (c=='o') { X="toSource";id=Id_toSource; }
- else if (c=='t') { X="toString";id=Id_toString; }
- break L;
- case 11: c=s.charAt(0);
- if (c=='c') { X="constructor";id=Id_constructor; }
- else if (c=='t') { X="toPrecision";id=Id_toPrecision; }
- break L;
- case 13: X="toExponential";id=Id_toExponential; break L;
- case 14: X="toLocaleString";id=Id_toLocaleString; break L;
- }
- if (X!=null && X!=s && !X.equals(s)) id = 0;
- break L0;
- }
-// #/generated#
- return id;
- }
-
- private static final int
- Id_constructor = 1,
- Id_toString = 2,
- Id_toLocaleString = 3,
- Id_toSource = 4,
- Id_valueOf = 5,
- Id_toFixed = 6,
- Id_toExponential = 7,
- Id_toPrecision = 8,
- MAX_PROTOTYPE_ID = 8;
-
-// #/string_id_map#
-
- private double doubleValue;
-}