use strict;
my $str = 'int
abv, cde, doub1lel,ded, cto, int1;
float ng23423, _ga45,
astories;
int af , f;
int a, b, c;int short alt ;
long double fgd [ 1 ], [1] , wef ;
char _a[1], fi [
3
] [ 10] [ 4 ] ,g[1];int qw;';
my $regex = qr/\s*
(
(?<type>int(?:\s+long|\s+short)?|double(?:\s+long)?|
long(?:\s+int|\s+double)?|short(?:\s+int)?|float|char)
|
(?<error>\w+|\w+\s*\,)
)
\s+
(?:
(?:
(?:
(?<error>int|double|float|char|long|short|[^,;a-zA-Z_].+?|[^,;]+?(?:\s+\w+?)+)
|
(?<id>[a-zA-Z_][a-zA-Z_0-9]*)
)
(?:\s*\[\s*[1-9]\d*\s*\])*
)
\s*
(?:\,\s*|(?=\;))
)+
\s*\;\s*/mxp;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html