Regular Expressions 101

Pro

1st Alternative\bpackage.*?\bendpackage\b

\ba Unicode word boundary

packagethe literal text package (case sensitive)

.*?any Unicode character, repeated any number of times

\ba Unicode word boundary

endpackagethe literal text endpackage (case sensitive)

\ba Unicode word boundary

2nd Alternativetypedef\s+struct\s+packed\s*{[^{}]*}\s*(\w+);

typedefthe literal text typedef (case sensitive)

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

structthe literal text struct (case sensitive)

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

packedthe literal text packed (case sensitive)

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

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Negated Character Class[^{}]*

*matches any number of characters outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

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

Group 1(\w+)

\w+a Unicode word character, repeated at least once

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\bpackage.*?\bendpackage\b|typedef\s+struct\s+packed\s*{[^{}]*}\s*(\w+);

New

package new;

typedef struct packed
{
    logic a;
    logic b;
} abc_y;

typedef struct packed
{
    logic a;
    logic b;
} abc_t;

endpackage

typedef struct packed
{
    logic a;
    logic b;
} abc_x;

Substitution

package new;

typedef struct packed
{
    logic a;
    logic b;
} abc_y;

typedef struct packed
{
    logic a;
    logic b;
} abc_t;

endpackage

typedef struct packed
{
    logic a;
    logic b;
} abc_x;