Class: ASTTransform::Transformation

Inherits:
AbstractTransformation
  • Object
show all
Defined in:
lib/ast_transform/transformation.rb

Overview

The transform! detector — the canonical sibling-annotation pass (see AbstractTransformation for the taxonomy). A transform!(...) statement is a pragma on the NEXT sibling: the transformations it names are applied to the following class definition or constant assignment, and the marker itself is deleted from the child list. Both effects need the parent's child list in view, which is why matching happens in process_node — an on_send handler would see the marker node alone, with no access to its next sibling and no way to remove itself.

Constant Summary collapse

TRANSFORM_AST = 
s(:send, nil, :transform!)