class

Ameba::AST::ElseIfAwareNodeVisitor

Inherits Ameba::AST::Util < Ameba::AST::NodeVisitor < Ameba::AST::BaseVisitor < Crystal::Visitor < Reference < Object

A class that utilizes a logic inherited from NodeVisitor to traverse AST nodes and fire a source test callback with the Crystal::If node and an array containing all elsif branches (first branch is an if node) in case at least one elsif branch is reached, and nil otherwise.

In Crystal, consecutive elsif branches are transformed into if branches attached to the else branch of an adjacent if branch.

For example:

if foo
  do_foo
elsif bar
  do_bar
elsif baz
  do_baz
else
  do_something_else
end

is transformed into:

if foo
  do_foo
else
  if bar
    do_bar
  else
    if baz
      do_baz
    else
      do_something_else
    end
  end
end

Constructors

new(rule, source, *, skip : Array | Category | Nil = nil, exclude_ternary : Bool = true, exclude_suffix : Bool = true)

Source

Instance methods

exclude_suffix?

Source

exclude_ternary?

Source

visit(node : Crystal::If)

A visit callback for Crystal::If node.

Returns true if the child nodes should be traversed as well, false otherwise.

Source