class

Ameba::AST::FlowExpression

Inherits Ameba::AST::Util < Reference < Object

Represents a flow expression in Crystal code. For example:

def foobar
  a = 3
  return 42 # => flow expression
  a + 1
end

Flow expression contains an actual node of a control expression and a parent node, which allows easily search through the related statement (i.e. find unreachable code)

Constructors

new(node : Crystal::ASTNode, in_loop : Bool)

Creates a new flow expression.

FlowExpression.new(node, parent_node)

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Instance methods

end_location(*args, **options)

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end_location(*args, **options, &)

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in_loop?

Is true only if some of the nodes parents is a loop.

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location(*args, **options)

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location(*args, **options, &)

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node

The actual node of the flow expression.

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to_s(*args, **options)

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to_s(*args, **options, &)

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unreachable_nodes

Returns nodes which can't be reached because of a flow command inside. For example:

def foobar
  a = 3
  return 42
  a + 1 # => unreachable node
end

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