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47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* NS_OVERRIDE may be marked on class methods which are intended to override
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* a method in a base class. If the method is removed or altered in the base
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* class, the compiler will force all subclass overrides to be modified.
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*/
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/**
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* Generate all the base classes recursively of class `c`.
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*/
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function all_bases(c)
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{
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for each (let b in c.bases) {
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yield b.type;
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for (let bb in all_bases(b.type))
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yield bb;
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}
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}
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function process_decl(d)
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{
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if (!hasAttribute(d, 'NS_override'))
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return;
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if (!d.memberOf || !d.isFunction) {
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error("%s is marked NS_OVERRIDE but is not a class function.".format(d.name), d.loc);
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return;
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}
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if (d.isStatic) {
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error("Marking NS_OVERRIDE on static function %s is meaningless.".format(d.name), d.loc);
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return;
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}
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for (let base in all_bases(d.memberOf)) {
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for each (let m in base.members) {
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if (m.shortName == d.shortName && signaturesMatch(m, d))
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return;
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}
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}
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error("NS_OVERRIDE function %s does not override a base class method with the same name and signature".format(d.name), d.loc);
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}
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