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• Parse-expressions

Vl-parse-range-expression

Match range_expression, returning an vl-erange-p.

Signature

(vl-parse-range-expression &key (tokstream 'tokstream) 
                           (config 'config)) 
 
  → 
(mv errmsg? value new-tokstream)

Arguments

config — Guard (vl-loadconfig-p config).

In Verilog-2005 the rule boils down to:

range_expression ::= expression
                   | expression ':' expression
                   | expression '+:' expression
                   | expression '-:' expression

In SystemVerilog-2012 the rule is identical, but just split up across several additional productions.

range_expression ::= expression | part_select_range

part_select_range ::= constant_range | indexed_range

constant_range ::= expression ':' expression

indexed_range ::= expression '+:' expression
                | expression '-:' expression