Lookaround does not work when it influences other part of pattern #63
Description
There is a general issue with lookaround patterns,
Whenever lookaround pattern part should influence another part of pattern (values that can be produced in another part of pattern) - it does not work correctly.
For example:
(?!B)[AB]
In this pattern lookahead part (?!B) influences [AB] part by limiting number of valid values of [AB] part.
This should be supported.
Original request text:
When using
new RgxGen("^((?!(BG|GB|KN|NK|NT|TN|ZZ)|(D|F|I|Q|U|V)[A-Z]|[A-Z](D|F|I|O|Q|U|V))[A-Z]{2})[0-9]{6}[A-D]?$").generate();
the following String is generated '">MO281733' which does not conform to the regular expression.
To Reproduce
Steps to reproduce the behavior:
-
With regex pattern
'^((?!(BG|GB|KN|NK|NT|TN|ZZ)|(D|F|I|Q|U|V)[A-Z]|[A-Z](D|F|I|O|Q|U|V))[A-Z]{2})[0-9]{6}[A-D]?$' -
Use code/API - Code
-
See error
Invalid String is returned '">MO281733'
Expected behavior
A clear and concise description of what you expected to happen.
I expect a string such as 'AA222222D' to be return as this is valid against the regex however this is not the case
Screenshots
If applicable, add screenshots to help explain your problem.
Environment (please complete the following information):
-
OS: [e.g. iOS] Windows 10
-
JDK/JRE version
java version "14.0.1" 2020-04-14
Java(TM) SE Runtime Environment (build 14.0.1+7)
Java HotSpot(TM) 64-Bit Server VM (build 14.0.1+7, mixed mode, sharing) -
RgxGen Version or commit id
<dependency>
<groupId>com.github.curious-odd-man</groupId>
<artifactId>rgxgen</artifactId>
<version>1.3</version>
</dependency>
Additional context
Add any other context about the problem here.