Class: Rubinius::AST::RescueCondition

Inherits:
Node
  • Object
show all
Defined in:
lib/compiler/ast/exceptions.rb

Instance Attribute Summary collapse

Attributes inherited from Node

#line

Instance Method Summary collapse

Methods inherited from Node

#ascii_graph, #attributes, #children, match_arguments?, match_send?, #new_block_generator, #new_generator, #node_name, node_name, #pos, #set_child, transform, #transform, transform_comment, transform_kind, transform_kind=, transform_name, #visit, #walk

Constructor Details

#initialize(line, conditions, body, nxt) ⇒ RescueCondition

Returns a new instance of RescueCondition.



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# File 'lib/compiler/ast/exceptions.rb', line 56

def initialize(line, conditions, body, nxt)
  @line = line
  @next = nxt
  @splat = nil
  @assignment = nil

  case conditions
  when ArrayLiteral
    @conditions = conditions
  when ConcatArgs
    @conditions = conditions.array
    @splat = RescueSplat.new line, conditions.rest
  when SplatValue
    @splat = RescueSplat.new line, conditions.value
  when nil
    condition = ConstantAccess.new line, :StandardError
    @conditions = ArrayLiteral.new line, [condition]
  end

  case body
  when Block
    @assignment = body.array.shift if assignment? body.array.first
    @body = body
  when nil
    @body = NilLiteral.new line
  else
    if assignment? body
      @assignment = body
      @body = NilLiteral.new line
    else
      @body = body
    end
  end
end

Instance Attribute Details

#assignment ⇒ Object

Returns the value of attribute assignment.



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# File 'lib/compiler/ast/exceptions.rb', line 54

def assignment
  @assignment
end

#body ⇒ Object

Returns the value of attribute body.



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# File 'lib/compiler/ast/exceptions.rb', line 54

def body
  @body
end

#conditions ⇒ Object

Returns the value of attribute conditions.



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# File 'lib/compiler/ast/exceptions.rb', line 54

def conditions
  @conditions
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/compiler/ast/exceptions.rb', line 54

def next
  @next
end

#splat ⇒ Object

Returns the value of attribute splat.



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# File 'lib/compiler/ast/exceptions.rb', line 54

def splat
  @splat
end

Instance Method Details

#assignment?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/compiler/ast/exceptions.rb', line 91

def assignment?(node)
  case node
  when VariableAssignment
    value = node.value
  when AttributeAssignment
    value = node.arguments.array.last
  else
    return false
  end

  return true if value.kind_of? CurrentException
end

#to_sexp ⇒ Object 



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# File 'lib/compiler/ast/exceptions.rb', line 104

def to_sexp
  array = @conditions.to_sexp
  array << @assignment.to_sexp if @assignment
  array << @splat.to_sexp if @splat

  sexp = [:resbody, array]
  case @body
  when Block
    sexp << (@body ? @body.array.map { |x| x.to_sexp } : nil)
  when nil
    sexp << nil
  else
    sexp << @body.to_sexp
  end

  sexp << @next.to_sexp if @next

  sexp
end