preproc: Handle curly braces in multi-line macro parameters

Multi-line macro uses curly braces for enclosing a parameter
containing comma(s). Passing curly braces as a part of a parameter
which is already enclosed with braces confuses the macro expander.

The number of braces in a group parameter is counted and any brace
in the outmost enclosing braces is treated as a part of parameter.
	e.g.) mmacro {1,2,3}, {4,{5,6}}
	      mmacro gets 2 parameters of '1,2,3' and '4,{5,6}'

Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>

0 files changed, 0 insertions, 0 deletions