Outline View

An outline is a summary of the structure of a file, shown in a separate view next to a textual editor. An outline is created by a Stratego strategy, but is configured in an ESV file under the views section:

views

  outline view: $Strategy
    expand to level: $Int

The Stratego strategy specified as $Strategy must have the following signature:

signature
  constructors

    Node : Label * Children -> Node

rules

  editor-outline:
    (node, position, ast, path, project-path) -> outline

Where the input is the default tuple used for builders, and the result is a list of Node terms, each carrying a label and a (possibly empty) list of child nodes.

Preserve origins on the node's label to allow navigating to the corresponding code from the outline.

For example:

views

  outline view: editor-outline
    expand to level: 3

This configures the editor-outline Stratego strategy to be used to create outlines, and that outline nodes should be expanded 3 levels deep by default.

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Last update: April 19, 2024
Created: April 19, 2024