| title | type | description | num | previous-page | next-page |
|---|---|---|---|---|---|
Scaladoc settings compatibility between Scala2 and Scala3 | section | This chapter lists all the scaladoc options for Scala 2 and Scala 3, and explains the relations between them. | 26 | options-new | plugin-intro |
The current page is stating the status of scaladoc settings. The related Github issue can be found here for discussion
| Scala2 | Scala3 | Description | Comment | Is implemented? |
|---|---|---|---|---|
| -doc-format | _ | Selects in which format documentation is rendered. | Actually, old scaladoc supports only html, so it is in some way consistent with new scaladoc, which provides only html | |
| -doc-title | -project | The overall name of the Scaladoc site | Aliased in #11965 | |
| -doc-version | -project-version | Aliased in #11965 | ||
| -doc-footer | -project-footer | A footer on every Scaladoc page, by default the EPFL/Lightbend copyright notice. Can be overridden with a custom footer. | Fixed by #11965 | |
| -doc-no-compile | _ | A directory containing sources which should be parsed for docstrings without compiling (e.g. AnyRef.scala) | We don't need this as we have completely different approach to that issue using -Ydocument-synthetic-types flag for synthetic types | |
| -doc-source-url | -source-links | A URL pattern used to link to the source file, with some variables supported... | Scala3 implementation provides richer syntax. You can find migration steps below this table. | |
| -doc-external-doc | -external-mappings | Links describing locations of external dependencies' documentations. | Scala3 implementation provides richer syntax. You can find migration steps below this table. | |
| -jdk-api-doc-base | -external-mappings | URL used to link Java API references. | You can specify jdk via -external-mappings since they are generalized setting. You can find migration steps below this table | |
| -doc-generator | _ | The fully qualified name of a doclet class, which will be used to generate the documentation. | We don't need this in Scala3 | |
| -doc-root-content | -doc-root-content | The file from which the root package documentation should be imported. | ||
| -implicits | _ | We don't need this in Scala3 - Contextual extension methods are always documented in Scala 3 | ||
| -implicits-debug | _ | We don't need this in Scala3 | ||
| -implicits-show-all | _ | We don't need this in Scala3 | ||
| -implicits-sound-shadowing | _ | We don't need this in Scala3 | ||
| -implicits-hide | _ | We don't need this in Scala3 | ||
| -diagrams | _ | We don't need this in Scala3 | ||
| -diagrams-debug | _ | We don't need this in Scala3 | ||
| -diagrams-dot-path | _ | We don't need this in Scala3 | ||
| -diagrams-max-classes | _ | We don't need this in Scala3 | ||
| -diagrams-max-implicits | _ | We don't need this in Scala3 | ||
| -diagrams-dot-timeout | _ | We don't need this in Scala3 | ||
| -diagrams-dot-restart | _ | We don't need this in Scala3 | ||
| -author | -author | Fixed by #11965 | ||
| -raw-output | _ | We don't need this in Scala3 | ||
| -no-prefixes | _ | We don't need this in Scala3 | ||
| -skip-packages | -skip-packages | |||
| -no-link-warnings | _ | Not implemented yet | ||
| -expand-all-types | _ | Setting has been removed | ||
| -groups | -groups | |||
| -no-java-comments | _ | We don't need this in Scala3 | ||
| -doc-canonical-base-url | -doc-canonical-base-url | A base URL to use as prefix and add canonical URLs to all pages. The canonical URL may be used by search engines to choose the URL that you want people to see in search results. If unset no canonical URLs are generated. | Fixed by #11965 | |
| -private | -private | Show all types and members. Unless specified, show only public and protected types and members. | Fixed by #11965 | |
| _ | -siteroot | We don't backport it to old scaladoc | N/A | |
| _ | -project-logo | Should we backport it to the old scaladoc? | N/A | |
| _ | -comment-syntax | We don't backport it to the old scaladoc | N/A | |
| _ | -revision | Should we backport it to the old scaladoc? | N/A | |
| _ | -social-links | Should we backport it to the old scaladoc? | N/A | |
| _ | -skip-by-id | We don't backport it to the old scaladoc | N/A | |
| _ | -skip-by-regex | We don't backport it to the old scaladoc | N/A | |
| _ | -snippet-compiler-args | We don't backport it to the old scaladoc | N/A | |
| _ | -Ydocument-synthetic-types | Documents intrinsic types e. g. Any, Nothing. Setting is useful only for stdlib |
Source links are used to point to source code at some remote repository like github or bitbucket. Hopefully, the new syntax is almost superset of the old syntax. To migrate to the new scaladoc syntax, make sure that you don't use any of these variables: €{TPL_OWNER} or €{FILE_PATH_EXT}. Otherwise you have to rewrite your source link, using either other variables or you can use new syntax, about which you can read more in the [Scaladoc documentation]({% link _overviews/scala3-scaladoc/settings.md %}). Note that new syntax let you specify prefixes of your files paths to match specific url in case your sources are scattered in different directories or even different repositories.
This setting is a generalized form of the old settings for javadoc/scaladoc.
Example external mapping is:
-external-mappings:.*scala.*::scaladoc3::https://scala-lang.org/api/3.x/,.*java.*::javadoc::https://docs.oracle.com/javase/8/docs/api/ A mapping is of the form '<regex>::[scaladoc3|scaladoc|javadoc]::<path>'. You can supply several mappings, separated by commas, as shown in the example.
Given that the old syntaxes were:
- for scaladoc -
prefix#url - for javadoc - just URL
one must take the regex that will match fq name (for javadoc, it can be wildcard like java.*), then concatenate it using double colons :: with one of the 3 available documentation formats, then again append :: and then provide url for where the extednal documentation is hosted.
