Class: MODL::Parser::Parsed::ParsedConditionTest

Inherits:
MODLParserBaseListener show all
Defined in:
lib/modl/parser/parsed.rb

Overview

Class to represent a parsed grammar object

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from MODLParserBaseListener

#enterModl, #enterModl_array, #enterModl_array_conditional, #enterModl_array_conditional_return, #enterModl_array_item, #enterModl_array_value_item, #enterModl_condition, #enterModl_condition_group, #enterModl_map, #enterModl_map_conditional, #enterModl_map_conditional_return, #enterModl_map_item, #enterModl_nb_array, #enterModl_operator, #enterModl_pair, #enterModl_primitive, #enterModl_structure, #enterModl_top_level_conditional, #enterModl_top_level_conditional_return, #enterModl_value, #enterModl_value_conditional, #enterModl_value_conditional_return, #enterModl_value_item, #enter_every_rule, #exitModl, #exitModl_array, #exitModl_array_conditional, #exitModl_array_conditional_return, #exitModl_array_item, #exitModl_array_value_item, #exitModl_condition, #exitModl_condition_group, #exitModl_condition_test, #exitModl_map, #exitModl_map_conditional, #exitModl_map_conditional_return, #exitModl_map_item, #exitModl_nb_array, #exitModl_operator, #exitModl_pair, #exitModl_primitive, #exitModl_structure, #exitModl_top_level_conditional, #exitModl_top_level_conditional_return, #exitModl_value, #exitModl_value_conditional, #exitModl_value_conditional_return, #exitModl_value_item, #exit_every_rule, #visit_error_node, #visit_terminal

Methods inherited from MODLParserListener

#enterModl, #enterModl_array, #enterModl_array_conditional, #enterModl_array_conditional_return, #enterModl_array_item, #enterModl_array_value_item, #enterModl_condition, #enterModl_condition_group, #enterModl_map, #enterModl_map_conditional, #enterModl_map_conditional_return, #enterModl_map_item, #enterModl_nb_array, #enterModl_operator, #enterModl_pair, #enterModl_primitive, #enterModl_structure, #enterModl_top_level_conditional, #enterModl_top_level_conditional_return, #enterModl_value, #enterModl_value_conditional, #enterModl_value_conditional_return, #enterModl_value_item, #exitModl, #exitModl_array, #exitModl_array_conditional, #exitModl_array_conditional_return, #exitModl_array_item, #exitModl_array_value_item, #exitModl_condition, #exitModl_condition_group, #exitModl_condition_test, #exitModl_map, #exitModl_map_conditional, #exitModl_map_conditional_return, #exitModl_map_item, #exitModl_nb_array, #exitModl_operator, #exitModl_pair, #exitModl_primitive, #exitModl_structure, #exitModl_top_level_conditional, #exitModl_top_level_conditional_return, #exitModl_value, #exitModl_value_conditional, #exitModl_value_conditional_return, #exitModl_value_item

Constructor Details

#initialize(global) ⇒ ParsedConditionTest

Returns a new instance of ParsedConditionTest.



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# File 'lib/modl/parser/parsed.rb', line 737

def initialize(global)
  @global = global
  @subConditionList = []
end

Instance Attribute Details

#subConditionList ⇒ Object

Returns the value of attribute subConditionList.



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# File 'lib/modl/parser/parsed.rb', line 735

def subConditionList
  @subConditionList
end

Instance Method Details

#enterModl_condition_test(ctx) ⇒ Object 



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# File 'lib/modl/parser/parsed.rb', line 761

def enterModl_condition_test(ctx)
  ctx_children = ctx.children
  unless ctx_children.empty?
    last_operator = nil
    should_negate = false
    ctx_children.each do |child|
      if child.is_a? MODLParser::Modl_condition_groupContext
        condition_group = ParsedConditionGroup.new @global
        child.enter_rule(condition_group)

        p2 = OpenStruct.new
        p2.a = last_operator
        p2.b = should_negate

        p1 = OpenStruct.new
        p1.a = condition_group
        p1.b = p2

        @subConditionList << p1

        last_operator = nil
        should_negate = false
      elsif child.is_a? MODLParser::Modl_conditionContext
        condition = ParsedCondition.new @global
        child.enter_rule(condition)
        p2 = OpenStruct.new
        p2.a = last_operator
        p2.b = should_negate

        p1 = OpenStruct.new
        p1.a = condition
        p1.b = p2

        @subConditionList << p1

        last_operator = nil
        should_negate = false
      else
        if child.text == '!'
          should_negate = true
        else
          last_operator = child.text
        end
      end
    end
  end
end

#evaluate ⇒ Object 



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# File 'lib/modl/parser/parsed.rb', line 742

def evaluate
  result = false
  @subConditionList.each do |s|
    last_operator = s.b.a
    should_negate = s.b.b

    partial = s.a.evaluate
    case last_operator
    when '&'
      result &= should_negate ? !partial : partial
    when '|'
      result |= should_negate ? !partial : partial
    else
      result |= should_negate ? !partial : partial
    end
  end
  result
end