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%{
# include <string>
int nBC = 0;
%}
%s hasT
%x inWith
%x inT
%option noyywrap nounput batch
%%
"operator<<" { ECHO; }
"operator>>" { ECHO; }
"operator". { ECHO; }
"<<" { ECHO; }
">>" { ECHO; }
" <<" { ECHO; }
" >>" { ECHO; }
"<anonymous>" { ECHO; }
\n+ {
BEGIN( INITIAL );
nBC = false;
ECHO;
}
" <" { ECHO; }
"<" {
BEGIN( inT );
printf("<...>");
nBC++;
}
<inT>"<" {
nBC++;
}
<inT>[^<>]* { }
<inT>">" {
nBC--;
if( nBC == 0 )
BEGIN( hasT );
}
<hasT>" [with"[^\]]*"]" { }
%%
int main()
{
yyin = stdin;
yylex();
return 0;
}
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