Class: Rubyang::Database::SchemaTree::SchemaNode

Inherits:
Object
  • Object
show all
Defined in:
lib/rubyang/database/schema_tree.rb

Overview

TODO: should add config_mode_context to validate and raise error if there is config true stmt in config false stmt

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(yangs, arg, yang, parent, _module) ⇒ SchemaNode

Returns a new instance of SchemaNode.



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# File 'lib/rubyang/database/schema_tree.rb', line 396

def initialize yangs, arg, yang, parent, _module
  @logger = Logger.new(self.class.name)
  @yangs = yangs
  @arg = arg
  @yang = yang
  @parent = parent
  @module = _module
end

Instance Attribute Details

#arg ⇒ Object

Returns the value of attribute arg.



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# File 'lib/rubyang/database/schema_tree.rb', line 395

def arg
  @arg
end

#module ⇒ Object

Returns the value of attribute module.



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# File 'lib/rubyang/database/schema_tree.rb', line 395

def module
  @module
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/rubyang/database/schema_tree.rb', line 395

def parent
  @parent
end

#yang ⇒ Object

Returns the value of attribute yang.



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# File 'lib/rubyang/database/schema_tree.rb', line 395

def yang
  @yang
end

#yangs ⇒ Object

Returns the value of attribute yangs.



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# File 'lib/rubyang/database/schema_tree.rb', line 395

def yangs
  @yangs
end

Instance Method Details

#evaluate_xpath(xpath, current = self) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 437

def evaluate_xpath xpath, current=self
  @logger.debug { 'in evaluate_xpath:' }
  @logger.debug { 'xpath:' }
  @logger.debug { xpath.to_yaml }
  @logger.debug { 'current:' }
  @logger.debug { current.class }
  evaluate_xpath_expr xpath, current
end

#evaluate_xpath_axis(location_step, current) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 476

def evaluate_xpath_axis location_step, current
  @logger.debug { 'in evaluate_xpath_axis:' }
  @logger.debug { 'location_step:' }
  @logger.debug { location_step.to_yaml }
  @logger.debug { 'current:' }
  @logger.debug { current.class }
  case location_step.axis.name
  when Rubyang::Xpath::Axis::SELF
    [self]
  when Rubyang::Xpath::Axis::PARENT
    [@parent]
  when Rubyang::Xpath::Axis::CHILD
    @children
  else
    raise "location_step.axis.name: #{location_step.axis.name} NOT implemented"
  end
end

#evaluate_xpath_expr(expr, current) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 532

def evaluate_xpath_expr expr, current
  case expr
  when Rubyang::Xpath::Expr
    @logger.debug { "in Expr" }
    @logger.debug { "op: #{expr.op}" }
    op = expr.op
    op_result = self.evaluate_xpath_expr( op, current )
  when Rubyang::Xpath::OrExpr
    @logger.debug { "in OrExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    op1 = expr.op1
    op2 = expr.op2
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Boolean
    end
  when Rubyang::Xpath::AndExpr
    @logger.debug { "in AndExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    op1 = expr.op1
    op2 = expr.op2
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Boolean
    end
  when Rubyang::Xpath::EqualityExpr
    @logger.debug { "in EqualityExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Boolean
    end
  when Rubyang::Xpath::RelationalExpr
    @logger.debug { "in RelationalExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Boolean
    end
  when Rubyang::Xpath::AdditiveExpr
    @logger.debug { "in AdditiveExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Number
    end
  when Rubyang::Xpath::MultiplicativeExpr
    @logger.debug { "in MultiplicativeExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::Number
    end
  when Rubyang::Xpath::UnaryExpr
    @logger.debug { "in UnaryExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if operator == nil
      op1_result
    else
      Rubyang::Xpath::BasicType::Number
    end
  when Rubyang::Xpath::UnionExpr
    @logger.debug { "in UnionExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2, current )
      Rubyang::Xpath::BasicType::NodeSet
    end
  when Rubyang::Xpath::PathExpr
    @logger.debug { "in PathExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    @logger.debug { "operator: #{expr.operator}" }
    op1 = expr.op1
    op2 = expr.op2
    operator = expr.operator
    op1_result = case op1
                 when Rubyang::Xpath::LocationPath
                   self.evaluate_xpath_path( op1, current )
                 when Rubyang::Xpath::FilterExpr
                   self.evaluate_xpath_expr( op1, current )
                 else
                   raise "PathExpr: #{op1} not supported"
                 end
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_path( op2, current )
      Rubyang::Xpath::BasicType::NodeSet
    end
  when Rubyang::Xpath::FilterExpr
    @logger.debug { "in FilterExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    @logger.debug { "op2: #{expr.op2}" }
    op1 = expr.op1
    op2 = expr.op2
    op1_result = self.evaluate_xpath_expr( op1, current )
    if op2 == nil
      op1_result
    else
      op2_result = self.evaluate_xpath_expr( op2.expr, current )
      Rubyang::Xpath::BasicType::NodeSet
    end
  when Rubyang::Xpath::PrimaryExpr
    @logger.debug { "in PrimaryExpr" }
    @logger.debug { "op1: #{expr.op1}" }
    op1 = expr.op1
    case op1
    when Rubyang::Xpath::VariableReference
      Rubyang::Xpath::BasicType::String
    when Rubyang::Xpath::Expr
      op1_result = self.evaluate_xpath_expr( op1, current )
    when Rubyang::Xpath::Literal
      Rubyang::Xpath::BasicType::String
    when Rubyang::Xpath::Number
      Rubyang::Xpath::BasicType::Boolean
    when Rubyang::Xpath::FunctionCall
      op1_result = self.evaluate_xpath_expr( op1, current )
    else
      raise "Primary Expr: '#{op1}' not implemented"
    end
  when Rubyang::Xpath::FunctionCall
    @logger.debug { "in FunctionCall" }
    @logger.debug { "name: #{expr.name}" }
    @logger.debug { "args: #{expr.args}" }
    name = expr.name
    case name
    when Rubyang::Xpath::FunctionCall::CURRENT
      Rubyang::Xpath::BasicType::NodeSet
    else
      raise "FunctionCall: #{name} not implemented"
    end
  else
    raise "Unrecognized Expr: #{expr}"
  end
end

#evaluate_xpath_node_test(location_step, current) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 494

def evaluate_xpath_node_test location_step, current
  case location_step.node_test.node_test_type
  when Rubyang::Xpath::NodeTest::NodeTestType::NAME_TEST
    if self.model.arg == location_step.node_test.node_test
      [self]
    else
      []
    end
  when Rubyang::Xpath::NodeTest::NodeTestType::NODE_TYPE
    case location_step.node_test.node_test
    when Rubyang::Xpath::NodeTest::NodeType::COMMENT
      raise "node-type: comment is not implemented"
    when Rubyang::Xpath::NodeTest::NodeType::TEXT
      raise "node-type: text is not implemented"
    when Rubyang::Xpath::NodeTest::NodeType::NODE
      [self]
    else
      raise "node-type not match to comment or text or node"
    end
  when Rubyang::Xpath::NodeTest::NodeTestType::PROCESSING_INSTRUCTION
    raise "processing-instruction is not implemented"
  else
    raise ""
  end
end

#evaluate_xpath_path(location_path, current) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 446

def evaluate_xpath_path location_path, current
  @logger.debug { 'in evaluate_xpath_path:' }
  @logger.debug { 'location_path:' }
  @logger.debug { location_path.to_yaml }
  @logger.debug { 'current:' }
  @logger.debug { current.class }
  first_location_step = location_path.location_step_sequence.first
  @logger.debug { 'first_location_step:' }
  @logger.debug { first_location_step.to_yaml }
  candidates_by_axis = self.evaluate_xpath_axis( first_location_step, current )
  @logger.debug { 'candidates_by_axis:' }
  @logger.debug { candidates_by_axis.to_yaml }
  candidates_by_node_test = candidates_by_axis.inject([]){ |cs, c| cs + c.evaluate_xpath_node_test( first_location_step, current ) }
  @logger.debug { 'candidates_by_node_test:' }
  @logger.debug { candidates_by_node_test.to_yaml }
  candidates_by_predicates = candidates_by_node_test.inject([]){ |cs, c| cs + c.evaluate_xpath_predicates( first_location_step, current ) }
  @logger.debug { 'candidates_by_predicates:' }
  @logger.debug { candidates_by_predicates.to_yaml }
  if location_path.location_step_sequence[1..-1].size == 0
    candidates_by_predicates
  else
    candidates_by_predicates.inject([]){ |cs, c|
      following_location_path = Rubyang::Xpath::LocationPath.new *(location_path.location_step_sequence[1..-1])
      @logger.debug { 'following_location_path:' }
      @logger.debug { following_location_path.to_yaml }
      c.evaluate_xpath_path( following_location_path, current )
    }
  end
end

#evaluate_xpath_predicates(location_step, current) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 520

def evaluate_xpath_predicates location_step, current
  case location_step.predicates.size
  when 0
    [self]
  else
    location_step.predicates.each{ |predicate|
      self.evaluate_xpath_expr predicate.expr, current
    }
    [self]
  end
end

#load_yang(yang, yangs = @yangs, parent_module = yang, current_module = yang, grouping_list = [], typedef_list = [], identity_list = []) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 721

def load_yang yang, yangs=@yangs, parent_module=yang, current_module=yang, grouping_list=[], typedef_list=[], identity_list=[]
  case yang
  when Rubyang::Model::Module
    yangs.push yang
    module_arg    = yang.arg
    namespace_arg = yang.substmt( 'namespace' )[0].arg
    prefix_arg    = yang.substmt( 'prefix' )[0].arg
    grouping_list += yang.substmt( 'grouping' )
    typedef_list  += yang.substmt( 'typedef' )
    identity_list += yang.substmt( 'identity' )
    yang.substmt( 'include' ).each{ |i|
      i.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
        self.load_yang s, yangs, parent_module, i, i.substmt( 'grouping' ), i.substmt( 'typedef' ), i.substmt( 'identity' )
      }
    }
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      self.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
  when Rubyang::Model::Submodule
    yangs.push yang
  when Rubyang::Model::Anyxml
    arg = yang.arg
    self.children.push Anyxml.new( yangs, arg, yang, self, parent_module )
  when Rubyang::Model::Container
    container_arg = yang.arg
    grouping_list += yang.substmt( 'grouping' )
    typedef_list  += yang.substmt( 'typedef' )
    identity_list  += yang.substmt( 'identity' )
    self.children.push Container.new( yangs, container_arg, yang, self, parent_module )
    # when start
    yang.substmt( "when" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
    # must start
    yang.substmt( "must" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
  when Rubyang::Model::Leaf
    leaf_arg = yang.arg
    self.children.push Leaf.new( yangs, leaf_arg, yang, self, parent_module, current_module, typedef_list, identity_list )
  when Rubyang::Model::LeafList
    leaf_arg = yang.arg
    self.children.push LeafList.new( yangs, leaf_arg, yang, self, parent_module, current_module, typedef_list, identity_list )
    # min-elements start
    yang.substmt( "min-elements" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
    # max-elements start
    yang.substmt( "max-elements" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
  when Rubyang::Model::List
    list_arg = yang.arg
    grouping_list += yang.substmt( 'grouping' )
    typedef_list  += yang.substmt( 'typedef' )
    identity_list  += yang.substmt( 'identity' )
    self.children.push List.new( yangs, list_arg, yang, self, parent_module )
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # min-elements start
    yang.substmt( "min-elements" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
    # max-elements start
    yang.substmt( "max-elements" ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
    # end
  when Rubyang::Model::Choice
    choice_arg = yang.arg
    grouping_list += yang.substmt( 'grouping' )
    typedef_list  += yang.substmt( 'typedef' )
    identity_list  += yang.substmt( 'identity' )
    self.children.push Choice.new( yangs, choice_arg, yang, self, parent_module )
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
  when Rubyang::Model::Case
    case_arg = yang.arg
    grouping_list += yang.substmt( 'grouping' )
    typedef_list  += yang.substmt( 'typedef' )
    self.children.push Case.new( yangs, case_arg, yang, self, parent_module )
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      self.children.last.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
  when Rubyang::Model::Augment
    target_node = self.resolve_node( yang.arg )
    yang.substmts( Rubyang::Model::DataDefStmtList ).each{ |s|
      target_node.load_yang s, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list
    }
  when Rubyang::Model::Uses
    self.resolve_uses( yang, yangs, parent_module, current_module, grouping_list, typedef_list, identity_list )
    # when start
  when Rubyang::Model::When
    @logger.debug { 'when statement' }
    @logger.debug { '' }
    @logger.debug { 'yang' }
    @logger.debug { yang.to_yaml }
    self.whens.push When.new( self, yang )
    # end
    # must start
  when Rubyang::Model::Must
    @logger.debug { yang }
    self.musts.push Must.new( self, yang )
    # end
    # min-elements start
  when Rubyang::Model::MinElements
    @logger.debug { yang }
    self.min_elements.push MinElements.new( yang )
    # end
    # max-elements start
  when Rubyang::Model::MaxElements
    @logger.debug { yang }
    self.max_elements.push MaxElements.new( yang )
    # end
  else
    raise "#{yang.class} is not impletented yet"
  end
end

#model ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 415

def model
  @yang
end

#namespace ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 418

def namespace
  @module.substmt( 'namespace' )[0].arg
end

#prefix ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 421

def prefix
  @module.substmt( 'prefix' )[0].arg
end

#root ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 424

def root
  if @parent == nil
    self
  else
    @parent.root
  end
end

#to_json ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 431

def to_json
  h = Hash.new
  self.to_json_recursive( h )
  h.to_json
end

#to_s(parent = true) ⇒ Object 



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# File 'lib/rubyang/database/schema_tree.rb', line 404

def to_s parent=true
  head, vars, tail = "#<#{self.class.to_s}:0x#{(self.object_id << 1).to_s(16).rjust(14,'0')} ", Array.new, ">"
  if parent
    vars.push "@yangs=#{@yangs.to_s}"
    vars.push "@arg=#{@arg.to_s}"
    vars.push "@yang=#{@yang.to_s(false) rescue @yang.to_s}"
    vars.push "@parent=#{@parent.to_s(false) rescue @parent.to_s}"
    vars.push "@module=#{@module.to_s(false) rescue @module.to_s}"
  end
  head + vars.join(', ') + tail
end