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src: implement special member functions for Environment #28579

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GauthamBanasandra
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The Environment class was missing the move constructor
and the move assignmnet operator.
As per the rule of five, a class must implement all the
five special member functions in order to enable the
compiler for better optimization.

Refs: https://en.cppreference.com/w/cpp/language/rule_of_three

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

@nodejs-github-bot nodejs-github-bot added the c++ Issues and PRs that require attention from people who are familiar with C++. label Jul 6, 2019
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@bnoordhuis bnoordhuis left a comment

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Your PR contains a lot of stylistic changes. Can you undo those please? We don't accept style changes as a rule and it makes code review a lot more onerous.

The classes in env.h were not adhering to the rule of five.
As per the rule of five, if a class implements any of five
special member functions, it must implement all the
five special member functions for enabling the compiler for
better optimization.

Refs: https://en.cppreference.com/w/cpp/language/rule_of_three
@GauthamBanasandra
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@bnoordhuis I've made the changes that you requested. PTAL.

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LGTM, thanks!

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@Trott
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Trott commented Jul 10, 2019

Landed in 7e69bce

@Trott Trott closed this Jul 10, 2019
Trott pushed a commit to Trott/io.js that referenced this pull request Jul 10, 2019
The classes in env.h were not adhering to the rule of five.
As per the rule of five, if a class implements any of five
special member functions, it must implement all the
five special member functions for enabling the compiler for
better optimization.

Refs: https://en.cppreference.com/w/cpp/language/rule_of_three

PR-URL: nodejs#28579
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
@GauthamBanasandra GauthamBanasandra deleted the ctors branch July 10, 2019 05:13
targos pushed a commit that referenced this pull request Jul 20, 2019
The classes in env.h were not adhering to the rule of five.
As per the rule of five, if a class implements any of five
special member functions, it must implement all the
five special member functions for enabling the compiler for
better optimization.

Refs: https://en.cppreference.com/w/cpp/language/rule_of_three

PR-URL: #28579
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
This was referenced Jul 23, 2019
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5 participants