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/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
File Name: 10.1.4-1.js
ECMA Section: 10.1.4 Scope Chain and Identifier Resolution
Description:
Every execution context has associated with it a scope chain. This is
logically a list of objects that are searched when binding an Identifier.
When control enters an execution context, the scope chain is created and
is populated with an initial set of objects, depending on the type of
code. When control leaves the execution context, the scope chain is
destroyed.
During execution, the scope chain of the execution context is affected
only by WithStatement. When execution enters a with block, the object
specified in the with statement is added to the front of the scope chain.
When execution leaves a with block, whether normally or via a break or
continue statement, the object is removed from the scope chain. The object
being removed will always be the first object in the scope chain.
During execution, the syntactic production PrimaryExpression : Identifier
is evaluated using the following algorithm:
1. Get the next object in the scope chain. If there isn't one, go to step 5.
2. Call the [[HasProperty]] method of Result(l), passing the Identifier as
the property.
3. If Result(2) is true, return a value of type Reference whose base object
is Result(l) and whose property name is the Identifier.
4. Go to step 1.
5. Return a value of type Reference whose base object is null and whose
property name is the Identifier.
The result of binding an identifier is always a value of type Reference with
its member name component equal to the identifier string.
Author: christine@netscape.com
Date: 12 november 1997
*/
var SECTION = "10.1.4-2";
var VERSION = "ECMA_1";
startTest();
writeHeaderToLog( SECTION + " Scope Chain and Identifier Resolution");
new TestCase( "SECTION", "with MyObject, eval should return square of " );
test();
function test() {
for ( gTc=0; gTc < gTestcases.length; gTc++ ) {
var MYOBJECT = new MyObject();
var INPUT = 2;
gTestcases[gTc].description += "( "+INPUT +" )" ;
with ( this ) {
with ( MYOBJECT ) {
gTestcases[gTc].actual = eval( INPUT );
gTestcases[gTc].expect = Math.pow(INPUT,2);
}
}
gTestcases[gTc].passed = writeTestCaseResult(
gTestcases[gTc].expect,
gTestcases[gTc].actual,
gTestcases[gTc].description +" = "+
gTestcases[gTc].actual );
gTestcases[gTc].reason += ( gTestcases[gTc].passed ) ? "" : "wrong value ";
}
return ( gTestcases );
}
function MyObject() {
this.eval = new Function( "x", "return(Math.pow(Number(x),2))" );
}
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