[Bug]: Referred type is wrong for regxp:RegExp

[prakanth]

Description

Here

record {|
  int:Unsigned8 x;
|} val = check xmldata:parseString(xmlStr);

If we check the expected type of field x in the runtime. The referred type is properly defined.

But if we change the type to regexp:RegExp, the referred type is set as anydata and readonly

This is wrong. Here we can not distinguish between anydata and regexp:RegExp

Steps to Reproduce

No response

Affected Version(s)

2201.9.0

OS, DB, other environment details and versions

No response

Related area

-> Compilation

Related issue(s) (optional)

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Suggested label(s) (optional)

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Suggested assignee(s) (optional)

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[Lakshan Weerasinghe]

In the RegExpValue we have set the type as readonly & anydata causing this issue.

ballerina-lang/bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/RegExpValue.java

Line 43 in b6dfdaa

 private static final Type type = PredefinedTypes.TYPE_READONLY_ANYDATA; 

In the runtime we don't have BType representation for RegExp type. Because of that we cannot predefine it and assign to the value. @pcnfernando Was there any reason not to have a runtime BType representation?