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142 lines
4.2 KiB
Plaintext
142 lines
4.2 KiB
Plaintext
Storage Module Style Guidelines
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These guidelines should be followed for all new code in this module. Reviewers
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will be enforcing them, so please obey them!
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* All code should be contained within the namespace mozilla::storage at a
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minimum. The use of namespaces is strongly encouraged.
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* All functions being called in the global namespace should be prefixed with
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"::" to indicate that they are in the global namespace.
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* The indentation level to use in source code is two spaces. No tabs, please!
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* All files should have the following emacs and vim mode lines:
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-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* All functions that are not XPCOM should start with a lowercase letter.
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* Function arguments that are not out parameters should be prefixed with a (for
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pArameter), and use CamelCase.
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* Function arguments that are out parameters should be prefixed with an
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underscore and have a descriptive name.
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* Function declarations should include javadoc style comments.
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* Javadoc @param tags should have the parameter description start on a new line
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aligned with the variable name. See the example below.
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* Javadoc @return (note: non-plural) continuation lines should be lined up with
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the initial comment. See the example below.
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* Javadoc @throws, like @param, should have the exception type on the same line
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as the @throws and the description on a new line indented to line up with
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the type of the exception.
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* For function implementations, each argument should be on its own line.
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* All variables should use camelCase.
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* The use of bool is encouraged whenever the variable does not have the
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potential to go through xpconnect.
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* For pointer variable types, include a space after the type before the asterisk
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and no space between the asterisk and variable name.
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* If any part of an if-else block requires braces, all blocks need braces.
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* Every else should be on a newline after a brace.
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* Bracing should start on the line after a function and class definition. This
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goes for JavaScript code as well as C++ code.
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* If a return value is not going to be checked, the return value should be
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explicitly casted to void (C style cast).
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BIG EXAMPLE:
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*** Header ***
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ : */
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/* 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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#ifndef mozilla_storage_FILENAME_h_
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#define mozilla_storage_FILENAME_h_
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namespace mozilla {
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namespace storage {
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class Foo : public Bar
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, public Baz
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{
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public:
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/**
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* Brief function summary.
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*
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* @param aArg1
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* Description description description description description etc etc
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* next line of description.
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* @param aArg2
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* Description description description.
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* @return Description description description description description etc etc
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* next line of description.
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*
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* @throws NS_ERROR_FAILURE
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* Okay, so this is for JavaScript code, but you probably get the
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* idea.
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*/
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int chew(int aArg1, int aArg2);
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};
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} // storage
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} // mozilla
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#endif // mozilla_storage_FILENAME_h_
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*** Implementation ***
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ : */
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/* 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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NS_IMPL_ISUPPORTS2(
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Foo
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, IBar
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, IBaz
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)
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Foo::Foo(
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LongArgumentLineThatWouldOtherwiseOverflow *aArgument1
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)
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: mField1(0)
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, mField2(0)
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{
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someMethodWithLotsOfParamsOrJustLongParameters(
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mLongFieldNameThatIsJustified,
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mMaybeThisOneIsLessJustifiedButBoyIsItLong,
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15
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);
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}
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////////////////////////////////////////////////////////////////////////////////
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//// Separate sections of the file like this
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int
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Foo::chew(int aArg1, int aArg2)
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{
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(void)functionReturningAnIgnoredValue();
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::functionFromGlobalNamespaceWithVoidReturnValue();
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return 0;
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}
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