[Dlang-internal] Where is checked the right paren closing the condition of an if / while condition ?

[Basile B.]

Can someone give me the link to the SLOC in parser.d where is 
checked the right parenthesis for example here

if (true) {}
--------^

or here

while (true) {}
-----------^

That's very strange but by following the path

parseExpression
parseAssignExpression
.   .
.   .
.   .
parseUnaryExpression
parsePrimaryExpression
parsePostExpression

I don't see it at all. I expected it at the end but 
well...nothing.