[LLVMdev] Fixed with hex numbers with raw_ostream

[Nick Kledzik]

I've been using the nifty:
   DEBUG(errs() << "Here is the state of things:\n");
style of optional logging, but ran into an issue where I want to dump a table of information.  The problem is getting the columns to line up, since the raw_ostream methods write numbers as variable length.  

I've worked up a patch that adds two new methods to raw_ostream:

 /// write_hex - Output \arg N as ten char hexadecimal string, including
 /// 0x prefix (e.g. 0x12345678 or 0x00000001).
 raw_ostream &write_hex32(uint32_t N);

 /// write_hex - Output \arg N as 18 char hexadecimal string, including
 /// 0x prefix (e.g. 0x0123456789abcdef or 0x0000000000000001).
 raw_ostream &write_hex64(uint64_t N);


Is there already some way to do this level of formatting with raw_ostream?


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-Nick