Methods cannot be declared as constant
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c29cf0e66d
commit
f3c1d0f9af
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@ -90,6 +90,15 @@ exports.buildMethod = function(
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);
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}
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// const doesn't make sense for methods; they're always immutable
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if ( keywords[ 'const' ] )
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{
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throw TypeError(
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"Cannot declare method '" + name + "' as constant; keyword is " +
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"redundant"
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);
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}
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// search for any previous instances of this member
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if ( prev )
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{
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@ -0,0 +1,58 @@
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/**
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* Tests const keyword
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*
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* Copyright (C) 2010 Mike Gerwitz
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*
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* This file is part of ease.js.
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*
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* ease.js is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @author Mike Gerwitz
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* @package test
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*/
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var common = require( './common' ),
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assert = require( 'assert' ),
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builder = common.require( 'class_builder' )
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;
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/**
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* The `const' keyword does not make sense with methods, as they are always
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* immutable. Methods of a class cannot be redefined after the class definition.
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* They may only be overridden by subtypes.
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*/
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( function testConstKeywordCannotBeUsedWithMethods()
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{
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try
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{
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// attempt to create a constant method (should fail)
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builder.build(
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{
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'const foo': function() {},
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} );
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}
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catch ( e )
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{
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assert.ok(
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e.message.search( 'foo' ) !== -1,
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"Const method error message should contain name of method"
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);
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return;
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}
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assert.fail( "Should not be able to declare constant methods" );
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} )();
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