Class: Packcr::Node::SequenceNode

Inherits:
Packcr::Node show all
Defined in:
lib/packcr/node/sequence_node.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Packcr::Node

#alt, #setup_rule

Constructor Details

#initialize(*nodes) ⇒ SequenceNode 



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# File 'lib/packcr/node/sequence_node.rb', line 6

def initialize(*nodes)
  super()
  self.nodes = nodes
end

Instance Attribute Details

#nodes ⇒ Object

Returns the value of attribute nodes.



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# File 'lib/packcr/node/sequence_node.rb', line 4

def nodes
  @nodes
end

Instance Method Details

#debug_dump(indent = 0) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 16

def debug_dump(indent = 0)
  $stdout.print "#{" " * indent}Sequence(max:#{max}, len:#{nodes.length}) {\n"
  nodes.each do |child_node|
    child_node.debug_dump(indent + 2)
  end
  $stdout.print "#{" " * indent}}\n"
end

#generate_code(gen, onfail, indent, bare) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 30

def generate_code(gen, onfail, indent, bare)
  b = false
  nodes.each_with_index do |expr, i|
    case gen.generate_code(expr, onfail, indent, false)
    when Packcr::CODE_REACH__ALWAYS_FAIL
      if i + 1 < nodes.length
        gen.write Packcr.template("node/sequence_unreachable.#{gen.lang}.erb", binding, indent: indent)
      end
      return Packcr::CODE_REACH__ALWAYS_FAIL
    when Packcr::CODE_REACH__ALWAYS_SUCCEED
    else
      b = true
    end
  end
  return b ? Packcr::CODE_REACH__BOTH : Packcr::CODE_REACH__ALWAYS_SUCCEED
end

#link_references(ctx) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 59

def link_references(ctx)
  nodes.each do |node|
    node.link_references(ctx)
  end
end

#max ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 24

def max
  m = 1
  m <<= 1 while m < @nodes.length
  m
end

#seq(node) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 11

def seq(node)
  @nodes << node
  self
end

#verify_captures(ctx, capts) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 53

def verify_captures(ctx, capts)
  nodes.each do |node|
    node.verify_captures(ctx, capts)
  end
end

#verify_variables(vars) ⇒ Object 



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# File 'lib/packcr/node/sequence_node.rb', line 47

def verify_variables(vars)
  nodes.each do |node|
    node.verify_variables(vars)
  end
end