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+/* The contents of this file are subject to the Netscape 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/NPL/
+ *
+ * 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 Mozilla Communicator client code, released March
+ * 31, 1998.
+ *
+ * The Initial Developer of the Original Code is Netscape Communications
+ * Corporation. Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ * 
+ */
+/**
+    File Name:          12.10-1.js
+    ECMA Section:       12.10 The with statement
+    Description:
+    WithStatement :
+    with ( Expression ) Statement
+
+    The with statement adds a computed object to the front of the scope chain
+    of the current execution context, then executes a statement with this
+    augmented scope chain, then restores the scope chain.
+
+    Semantics
+
+    The production WithStatement : with ( Expression ) Statement is evaluated
+    as follows:
+    1.  Evaluate Expression.
+    2.  Call GetValue(Result(1)).
+    3.  Call ToObject(Result(2)).
+    4.  Add Result(3) to the front of the scope chain.
+    5.  Evaluate Statement using the augmented scope chain from step 4.
+    6.  Remove Result(3) from the front of the scope chain.
+    7.  Return Result(5).
+
+    Discussion
+    Note that no matter how control leaves the embedded Statement, whether
+    normally or by some form of abrupt completion, the scope chain is always
+    restored to its former state.
+
+    Author:             christine@netscape.com
+    Date:               12 november 1997
+*/
+
+    var SECTION = "12.10-1";
+    var VERSION = "ECMA_1";
+    startTest();
+    var TITLE   = "The with statment";
+
+    writeHeaderToLog( SECTION + " "+ TITLE);
+
+    var testcases = getTestCases();
+
+    test();
+
+function test() {
+    for ( tc=0; tc < testcases.length; tc++ ) {
+        testcases[tc].passed = writeTestCaseResult(
+                            testcases[tc].expect,
+                            testcases[tc].actual,
+                            testcases[tc].description +" = "+
+                            testcases[tc].actual );
+
+        testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
+    }
+    stopTest();
+    return ( testcases );
+}
+function getTestCases() {
+    var array = new Array();
+    var item = 0;
+
+    // although the scope chain changes, the this value is immutable for a given
+    // execution context.
+
+    array[item++] = new TestCase( SECTION,
+                                "with( new Number() ) { this +'' }",
+                                "[object global]",
+                                eval("with( new Number() ) { this +'' }") );
+
+    // the object's functions and properties should override those of the
+    // global object.
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(true); with (MYOB) { parseInt() }",
+                        true,
+                        eval("var MYOB = new WithObject(true); with (MYOB) { parseInt() }") );
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(false); with (MYOB) { NaN }",
+                        false,
+                        eval("var MYOB = new WithObject(false); with (MYOB) { NaN }") );
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(NaN); with (MYOB) { Infinity }",
+                        Number.NaN,
+                        eval("var MYOB = new WithObject(NaN); with (MYOB) { Infinity }") );
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(false); with (MYOB) { }; Infinity",
+                        Number.POSITIVE_INFINITY,
+                        eval("var MYOB = new WithObject(false); with (MYOB) { }; Infinity") );
+
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(0); with (MYOB) { delete Infinity; Infinity }",
+                        Number.POSITIVE_INFINITY,
+                        eval("var MYOB = new WithObject(0); with (MYOB) { delete Infinity; Infinity }") );
+
+    // let us leave the with block via a break.
+
+    array[item++] = new TestCase(
+                        SECTION,
+                        "var MYOB = new WithObject(0); while (true) { with (MYOB) { Infinity; break; } } Infinity",
+                        Number.POSITIVE_INFINITY,
+                        eval("var MYOB = new WithObject(0); while (true) { with (MYOB) { Infinity; break; } } Infinity") );
+
+    return ( array );
+}
+function WithObject( value ) {
+    this.prop1 = 1;
+    this.prop2 = new Boolean(true);
+    this.prop3 = "a string";
+    this.value = value;
+
+    // now we will override global functions
+
+    this.parseInt = new Function( "return this.value" );
+    this.NaN = value;
+    this.Infinity = value;
+    this.unescape = new Function( "return this.value" );
+    this.escape   = new Function( "return this.value" );
+    this.eval     = new Function( "return this.value" );
+    this.parseFloat = new Function( "return this.value" );
+    this.isNaN      = new Function( "return this.value" );
+    this.isFinite   = new Function( "return this.value" );
+}