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Document the big regex

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-07-26 19:30:08 +02:00
parent a3974435ea
commit 8978c5b057
1 changed files with 11 additions and 3 deletions
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14
scripts/generate_errors.pl
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@ -68,9 +68,17 @@ foreach my $file (@files) {
close FILE;
my $found = 0;
while ($content =~ m[
(?:/\*[*!]([^<](?:[^*]|\*+[^*/])*)\*/)?
\s*\#\s*define\s+(MBEDTLS_ERR_\w+)\s+\-(0[Xx][0-9A-Fa-f]+)\s*
(?:/\*[*!]<((?:[^*]|\*+[^*/])*)\*/)?
# Both the before-comment and the after-comment are optional.
# Only the comment content is a regex capture group. The comment
# start and end parts are outside the capture group.
(?:/\*[*!](?!<) # Doxygen before-comment start
((?:[^*]|\*+[^*/])*) # $1: Comment content (no */ inside)
\*/)? # Comment end
\s*\#\s*define\s+(MBEDTLS_ERR_\w+) # $2: name
\s+\-(0[Xx][0-9A-Fa-f]+)\s* # $3: value (without the sign)
(?:/\*[*!]< # Doxygen after-comment start
((?:[^*]|\*+[^*/])*) # $4: Comment content (no */ inside)
\*/)? # Comment end
]gsx) {
my ($before, $name, $value, $after) = ($1, $2, $3, $4);
# Discard Doxygen comments that are coincidentally present before