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SwiftGen 6.6.0 Migration Guide

Changes for template writers

XCAssets

The resourceCount variable is now deprecated.

SwiftGen 6.2.1 Migration Guide

Migration Guide

Changes for template writers

JSON and Plist

The documents variable of each "file" is now considered as deprecated, it's replacement is document. The documents variable is still available, but will be removed in SwiftGen 7.0.

Initially we provided documents to keep the (context) data model the same for the JSON, Plist and YAML parsers, even though only YAML files can have multiple documents in one file. We've decided to forgo that approach, as our contexts should match the underlying content.

SwiftGen 6.0 Migration Guide

Migration Guide

Changes for users

Strings

The parser will no longer normalize string keys, which can lead to duplicate keys if your file contain similar keys but with different casing. For example, if your file contains:

"abcNews.something" = "foo";
"ABCNews.somethingElse" = "bar";

SwiftGenKit will no longer consolidate these into one "abcNews" case. It is up to the user to fix this inconsistent casing in their strings files, or to adapt a custom template to take that into consideration.

Changes for template writers

XCAssets

Groups now have an extra attribute isNamespaced that reflects the "provides namespace" setting in Xcode.

SwiftGenKit 2.0 (SwiftGen 5.0) Migration Guide

Migration Guide

If you're migrating from SwiftGenKit 1.x to SwiftGenKit 2.0 — which is the case if you are migrating from SwiftGen 4.x to SwiftGen 5.0 — then you should be aware of the following changes in variable names generated in the output context by SwiftGenKit, and adapt your custom templates accordingly to change the name of the variables you use.

Changes for template writers

As a reminder, you can find all the documentation for the context structures provided as variables to your templates in the Contexts Documentation folder of this repository — one MarkDown file for each SwiftGen subcommand / SwiftGenKit parser.

Common changes and the new --param flags

One common changes across all templates is that the enumName variable (or sceneEnumName & segueEnumName for storyboards) have been replaced by their param.enumName counterparts. Those are variables provided by the user via the --param enumName=… flag during SwiftGen's command line invocation.

This means that you are now also responsible for providing a default value for those param.enumName if you use them, in case the user didn't provide the --param enumName=… flag at all. You can use that with Stencil's default filter, e.g. enum {{param.enumName|default:"Assets"}}

You can also take advantage of that new --param feature to make your own templates more customizable, by allowing users to provide arbitrary values via the command line, e.g. using {{param.foo|default:"Foo"}} and {{param.bar|default:"-"}} in your templates to let users provide custom values using --param foo=MyFoo --param bar=_. Just don't forget to document the available params somewhere to let the users of your templates know about those.

Colors

📖 see the full context structure in the documentation here.

  • enumName has been replaced by param.enumName — see above.
  • colors has been replaced by the palettes array, each entry having a name and a colors property.
  • for each color:
    • rgb and rgba have been removed, as they can be composed from the other components (e.g. #{{color.red}}{{color.green}}{{color.blue}}{{color.alpha}}).

Fonts

📖 see the full context structure in the documentation here.

  • enumName has been replaced by param.enumName — see above.
  • for each font:
    • fontName has been replaced by the name property.

XCAssets (formerly Images)

📖 see the full context structure in the documentation here.

  • enumName has been replaced by param.enumName — see above.
  • images is deprecated. The new root key is named catalogs and contains the structured information.

Storyboards

📖 see the full context structure in the documentation here.

  • extraImports has been renamed modules (see SwiftGen/SwftGen#243)
  • sceneEnumName has been replaced by param.sceneEnumName — see above.
  • segueEnumName has been replaced by param.segueEnumName — see above.
  • for each scene:
    • isBaseViewController has been removed. You can replace it with a test for baseType == "ViewController" as Stencil now implements the == test operator.

Strings

📖 see the full context structure in the documentation here.

  • enumName has been replaced by param.enumName — see above.
  • strings and structuredStrings have been replaced by the tables array, where each table has a structured levels property.
  • tableName has been superseded by tables array, where each table has a name property.
  • for each level:
    • subenums has been renamed to children.
  • for each string:
    • keytail has been renamed to name.
    • the params structure with the names, typednames, types, count and declarations arrays have been removed. These have been replaced by types which is an array of types. The previous variables can now be reconstructed using template tags now that Stencil has become more powerful.

Changes for developers using SwiftGenKit as a dependency

Previously the parser context generation method (stencilContext()) accepted parameters such as enumName, this has been removed in favor of the --param system.

Templates will automatically receive a param object with parameters from the CLI invocation, and should provide default values in case no value was present in the invocation.

SwiftGen 4.2 Migration Guide

Migration Guide

Deprecated context variables in SwiftGen 4.2

The following Stencil context variables have been renamed or replaced in SwiftGen 4.2. They will no longer be available after the next major release of SwiftGen 5.0.

If you wrote custom templates for SwiftGen, we advise you to migrate your template to use to these new context variables instead of the old one so that they'll continue to work in 4.2 but also in the upcoming 5.0.

Colors

  • enumName: has been replaced by param.enumName, should provide default value.
  • rgb and rgba (for each color): can be composed from the other components.

Fonts

  • enumName: has been replaced by param.enumName, should provide default value.
  • fontName (for each font): has been replaced by the name property.

Images

  • enumName: has been replaced by param.enumName, should provide default value.
  • images: just old, catalogs contains the structured information.

Storyboards

  • extraImports: replaced by modules (SwiftGen#243)
  • sceneEnumName: has been replaced by param. sceneEnumName, should provide default value.
  • segueEnumName: has been replaced by param. segueEnumName , should provide default value.template using Stencil.
  • For each scene:
    • isBaseViewController: removed. You can replace it with a test for baseType == "ViewController".

Strings

  • enumName: has been replaced by param.enumName, should provide default value.
  • strings and structuredStrings: replaced by tables array, where each table has a structured levels property.
  • tableName: replaced by tables array, where each table has a name property.
  • for each level:
    • subenums: renamed to children.
  • for each string:
    • keytail: renamed to name.
    • params structure with the names, typednames, types, count and declarations arrays: removed.
    • These have been replaced by types which is an array of types. The previous variables can now be reconstructed using template tags now that Stencil has become more powerful.