regex101: Assembler Instruction

Pro

^start of line

Group opcode(?P<opcode>[a-zA-Z]+)

Character Class[a-zA-Z]+

+matches at least one character from the set below:

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group byte_mode(?P<byte_mode>\.[BbWw])?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[BbWw]

Bthe literal B (66₁₀ / 102₈ / 42₁₆) (case sensitive)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

Wthe literal W (87₁₀ / 127₈ / 57₁₆) (case sensitive)

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

Non-Capturing Group(?:\s+)

\s+a Unicode whitespace character, repeated at least once

Group operand_src(?P<operand_src>[A-Za-z0-9@]+)

Character Class[A-Za-z0-9@]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

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

@the literal @ (64₁₀ / 100₈ / 40₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Non-Capturing Group(?:(?:,\s*)|(?:\s+))

1st Alternative(?:,\s*)

Non-Capturing Group(?:,\s*)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*a Unicode whitespace character, repeated any number of times

2nd Alternative(?:\s+)

Non-Capturing Group(?:\s+)

\s+a Unicode whitespace character, repeated at least once

Group operand_dst(?P<operand_dst>[A-Za-z0-9@]+)

Character Class[A-Za-z0-9@]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

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

@the literal @ (64₁₀ / 100₈ / 40₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

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

25 tokens

Regular Expression

^(?P<opcode>[a-zA-Z]+)(?P<byte_mode>\.[BbWw])?(?:\s+)(?P<operand_src>[A-Za-z0-9@\(\)]+)(?:(?:,\s*)|(?:\s+))(?P<operand_dst>[A-Za-z0-9@\(\)]+)

New

add 23(PC), 6(R11)