@ SuppressWarnings ( "unchecked" ) private int getVarArgsParmCount ( String signature ) { if ( SignatureBuilder . SIG_STRING_AND_OBJECT_TO_VOID . equals ( signature ) ) { return 1 ; } if ( SIG_STRING_AND_TWO_OBJECTS_TO_VOID . equals ( signature ) ) { return 2 ; } OpcodeStack . Item item = stack . getStackItem ( 0 ) ; LOUserValue < Integer > uv = ( LOUserValue < Integer > ) item . getUserValue ( ) ; if ( ( uv != null ) && ( uv . getType ( ) == LOUserValue . LOType . ARRAY_SIZE ) ) { Integer size = uv . getValue ( ) ; if ( size != null ) { return Math . abs ( size . intValue ( ) ) ; } } return - 1 ; }
returns the number of parameters slf4j or log4j2 is expecting to inject into the format string