Regular Expressions 101

use the literal text use (case insensitive)

Group 1((?:([a-z_0-9]*)\.)*)

Non-Capturing Group(?:([a-z_0-9]*)\.)*

*repeats the group contents below any number of times:

Group 2([a-z_0-9]*)

Character Class[a-z_0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3(\w*)

\w*a Unicode word character, repeated any number of times

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

use ((?:([a-z_0-9]*)\.)*)(\w*);

New

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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

use work.pk_avalon_mm_extif_defs.all;
use work.common_tb_pkg.all;

package common_register_interface_pkg is