Assuming you don't allow comment nesting or /*/, a C comment is 

qr{ /\* .*? \*/ }sx

[download]

You said C, but your example also shows a C++ comment. A C++ comment is 

qr{ // [^\n]* }x

[download]

The default definition of whitespace in PRD is 

qr{ \s* }x

[download]

So if we combine them all, we get 

Para: <skip:qr{
         (?>
            \s
         |
            /\* .*? \*/
         |
            // [^\n]*
         )*
      }sx>
      List(s) /\Z/

[download]

<skip> is dynamically scoped, so List and everything called by it will be affected.

In reply to Re: PRD parser problem: How to skip C comments when parsing by ikegami
in thread PRD parser problem: How to skip C comments when parsing by Hanken

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