Question

I want to split a long scala file by the javadoc it contains, into some parts.

source split """(?s)\/\*\*(.*?)\*\/"""

works, but it will ignore all the javadoc it matchs.

How to get all parts?

For example:

/** package */
package test

/**
 * Class user
 */
class class User

It will be split into 4 parts:

/** package */

and

package test

and

/**
 * Class user
 */

and

case class User

How to do it?

Answer 1

Try these:

val source = """/** package */
package test

/**
 * Class user
 */
class class User"""

val R = """(?s)/\*\*.*?\*/"""

val x = R.r.findAllIn(source)
val y = source.split(R).toList.tail

val parts = x.toList.zip(y).flatMap(x => List(x._1, x._2))

As dhg said, using regex to solve such a problem is not recommended. It’s slow and fragile.