llvm/llvm-project

modernize-use-digit-separator

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#35.414 aperta il 23 gen 2018

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Descrizione

Bugzilla Link 36066
Version unspecified
OS All

Extended Description

Create a check that looks for long integral constants and inserts the digits separator (') appropriately.

Suggested groupings:

  • decimal integral constants, groups of 3 digits, e.g. int x = 1'000;
  • binary integral constants, groups of 4 digits, e.g. int x = 0b0010'0011;
  • octal integral constants, groups of 3 digits, e.g. int x = 0377'777;
  • hexadecimal integral constants, groups of 4 digits, e.g. unsigned long x = 0xffff'0000;
  • floating-point constnats, group into 3 digits on either side of the decimal point, e.g. float x = 3'456.001'25f;

This check requires C++14.

Provision could be made for supplying a mapping of numeric literal type to number of digits to be grouped.

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