Class: MODL::Parser::Parsed::ParsedPair

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_condition_test, #enterModl_map, #enterModl_map_conditional, #enterModl_map_conditional_return, #enterModl_map_item, #enterModl_nb_array, #enterModl_operator, #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_condition_test, #enterModl_map, #enterModl_map_conditional, #enterModl_map_conditional_return, #enterModl_map_item, #enterModl_nb_array, #enterModl_operator, #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) ⇒ ParsedPair

Returns a new instance of ParsedPair.



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# File 'lib/modl/parser/parsed.rb', line 208

def initialize(global)
  @global = global
  @needs_defref = true
  @final = false
  @file_importer = FileImporter.instance
  @loaded = false
end

Instance Attribute Details

#array ⇒ Object

Returns the value of attribute array.



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# File 'lib/modl/parser/parsed.rb', line 199

def array
  @array
end

#final ⇒ Object

Returns the value of attribute final.



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# File 'lib/modl/parser/parsed.rb', line 204

def final
  @final
end

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/modl/parser/parsed.rb', line 197

def key
  @key
end

#key_lists ⇒ Object

Returns the value of attribute key_lists.



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# File 'lib/modl/parser/parsed.rb', line 201

def key_lists
  @key_lists
end

#loaded ⇒ Object

For *load instructions so we don’t load twice



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# File 'lib/modl/parser/parsed.rb', line 205

def loaded
  @loaded
end

#map ⇒ Object

Returns the value of attribute map.



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# File 'lib/modl/parser/parsed.rb', line 198

def map
  @map
end

#text ⇒ Object

The simple text value rather than the object



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# File 'lib/modl/parser/parsed.rb', line 203

def text
  @text
end

#type ⇒ Object

A string set to the type of pair that we have found bases on its key



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# File 'lib/modl/parser/parsed.rb', line 202

def type
  @type
end

#valueItem ⇒ Object

Returns the value of attribute valueItem.



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# File 'lib/modl/parser/parsed.rb', line 200

def valueItem
  @valueItem
end

Instance Method Details

#enterModl_pair(ctx) ⇒ Object

Raises:



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# File 'lib/modl/parser/parsed.rb', line 291

def enterModl_pair(ctx)
  @type = 'pair' # default the type to an ordinary pair

  ctx_string = ctx.STRING
  @key = ctx_string.to_s unless ctx_string.nil?
  ctx_quoted = ctx.QUOTED
  unless ctx_quoted.nil?
    @key = ctx_quoted.to_s
    @key = Sutil.toptail(@key) # remove the quotes
  end

  raise InterpreterError, 'Invalid key - null, true, or false keys are not allowed.' if @key.nil?

  if @key.include?('%') || @key.include?('`')
    @key, new_value = RefProcessor.deref @key, @global
    unless @key.is_a?(String)
      @key = new_value.is_a?(String) ? new_value : new_value.text
    end
    raise InterpreterError, "Error: '" + @key.to_s + "' should de-ref to a string." unless key.is_a?(String)
  end

  @final = true if @key.upcase == @key

  modl_array = ctx.modl_array
  modl_map = ctx.modl_map
  modl_value_item = ctx.modl_value_item

  if !modl_array.nil?
    @array = ParsedArray.new @global
    modl_array.enter_rule(@array)
  elsif !modl_map.nil?
    @map = ParsedMap.new @global
    modl_map.enter_rule(@map)
  elsif !modl_value_item.nil?
    @valueItem = ParsedValueItem.new @global
    modl_value_item.enter_rule(@valueItem)
  end

  set_pair_type
  raise InterpreterError, 'Invalid keyword: ' + @key if @type == 'pair' && @key.start_with?('*')

  validate_key if @type == 'pair' || @type == 'hidden'

  # Type-specific processing
  case @type
  when 'class'
    ClassExtractor.extract(self, @global)
  when 'id'
    extract_value
  when 'name'
    extract_value
  when 'superclass'
    extract_value
  when 'allow'
    extract_value
  when 'keylist'
    KeylistExtractor.extract(self, @valueItem) if @valueItem
    KeylistExtractor.extract(self, @array) if @array
  when 'version'
    extract_value

    raise InterpreterError, 'Invalid MODL version: nil' if @valueItem.value.primitive.number.nil?
    raise InterpreterError, 'Invalid MODL version: ' + @valueItem.value.primitive.number.num.to_s if @valueItem.value.primitive.number.num.is_a? Float
    raise InterpreterError, 'Invalid MODL version: ' + @valueItem.value.primitive.number.num.to_s if @valueItem.value.primitive.number.num.zero?
    raise InterpreterError, 'MODL version should be on the first line if specified.' if @global.has_pairs?
    @global.syntax_version = @valueItem.value.primitive.number.num

  when 'method'
    MethodExtractor.extract(self, @global)
  when 'transform'
    extract_transform @valueItem
  when 'import'
    files = @valueItem.extract_hash if @valueItem
    files = @array.extract_hash if @array
    @file_importer.import_files files, @global unless @global.in_condition?
  when 'index'
    IndexExtractor.extract(self, @global)
  when 'hidden'
    extract_value
  else
    extract_value
  end

  return if @global.in_condition? # Don't store pairs in conditionals until we evaluate the conditions

  if @key.start_with? '_'
    k = Sutil.tail(@key)
    existing = @global.pair(k)
    raise InterpreterError, 'Already defined ' + k + ' as final.' if existing&.final

    @global.pair(k, self)
  end
  existing = @global.pair(@key)
  raise InterpreterError, 'Already defined ' + @key + ' as final.' if existing&.final

  @global.pair(@key, self)
end

#extract_hash ⇒ Object

Convert this object to a simple hash ready for JSON.generate



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# File 'lib/modl/parser/parsed.rb', line 271

def extract_hash

  value = @array.extract_hash if @array
  value = @valueItem.extract_hash if @valueItem
  value = @map.extract_hash if @map

  @text = value

  return if @type == 'index'
  return if @type == 'hidden'
  return if @type == 'version'
  return if @type == 'class'
  return if @type == 'method'
  return if @type == 'import'
  return if @type == 'allow'
  return if @type == 'expect'

  {@key => @text}
end

#find_property(key) ⇒ Object 



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# File 'lib/modl/parser/parsed.rb', line 216

def find_property(key)
  return self if key == @key

  return @map.find_property(key) if @map
  return @array.find_property(key) if @array
  return @valueItem.find_property(key) if @valueItem
end

#set_value(value) ⇒ Object

Set the appropriate field base on the value type



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# File 'lib/modl/parser/parsed.rb', line 225

def set_value(value)
  if value.is_a? Array
    @map = nil
    @array = ParsedArray.new @global
    @array.abstractArrayItems = []
    value.each do |item|
      array_item = ParsedArrayItem.new @global
      array_item.arrayValueItem = ParsedArrayValueItem.new @global
      array_item.arrayValueItem.primitive = ParsedPrimitive.new(@global)
      array_item.arrayValueItem.primitive.string = ParsedString.new(item)
      array_item.arrayValueItem.primitive.text = item
      @array.abstractArrayItems << array_item
    end
    @valueItem = nil
    @text = @array.extract_hash
    return
  elsif value.is_a?(ParsedPair)
    @map = value.map ? value.map : nil
    @array = value.array ? value.array : nil
    @valueItem = value.valueItem ? value.valueItem : nil
    return
  elsif value.is_a?(TrueClass) || value.is_a?(FalseClass)
    @map = nil
    @array = nil
    @valueItem = ParsedValueItem.new @global
    @valueItem.value = ParsedValue.new @global
    @valueItem.value.primitive = ParsedPrimitive.new(@global)
    if value
      @valueItem.value.primitive.trueVal = ParsedTrue.instance
    else
      @valueItem.value.primitive.falseVal = ParsedFalse.instance
    end
    @valueItem.value.primitive.text = value
    @valueItem.value.text = value
    @text = value
    return
  end
  value = value.extract_hash unless value.is_a?(String) || value.is_a?(Integer)
  @map = nil
  @array = nil
  @valueItem = ParsedValueItem.new @global
  @valueItem.value = ParsedString.new(value)
  @text = value
end