Class: RMasm::PrimitiveDataItem

Inherits:
DataItem show all
Defined in:
lib/rmasm/data_primitive.rb

Overview

Instance Attribute Summary

Attributes inherited from DataItem

#array_size, #default_value, #symbol, #type

Attributes inherited from Directive

#id

Instance Method Summary collapse

Methods inherited from DataItem

decode, decode_array_size, fetch

Methods included from IBinIOWriter

#_binary_read, #_binary_write, #binary_read, #binary_write, #from_binary, #to_binary

Methods inherited from Directive

#fetch

Constructor Details

#initialize(type, symbol, array_size, default_value, value) ⇒ PrimitiveDataItem

Returns a new instance of PrimitiveDataItem.



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# File 'lib/rmasm/data_primitive.rb', line 121

def initialize(type, symbol, array_size, default_value, value)
  super type, symbol, array_size, default_value
  @values = []
  @hash_single = {}
  @hash_range = {}
  @max_hash_array_index = -1
  @errors = 0

  # If the value is not an array, put it in an array to use common process_array_values() function
  if !value.is_a?(Array)
    process_single_value(value)
  elsif !@array_size.nil?
    process_array_values(value)

    # Update the real size according to the values and the hash ranges
    if @values.length > @array_size
      if @array_size == 0
        @array_size = @values.length
      else
        report_error(:R4A83, @type, @array_size, @values.length)
      end
    end

    if (@max_hash_array_index+1) > @array_size
      @array_size = @max_hash_array_index + 1
    end
  else
    report_error(:R4A72, value, @type)
  end

end

Instance Method Details

#index_invalid?(index) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rmasm/data_primitive.rb', line 202

def index_invalid?(index)
  if index < 0
    return true
  elsif @array_size == 0
    @max_hash_array_index = index if index > @max_hash_array_index
    return false
  elsif index < @array_size
    return false
  end
  return true
end

#process_array_values(values) ⇒ Object

process_array_values process an array of initialization values for a primitive type This function handles simples numeric ans string valeus, as well as nestesd arrays, hash with single mapping and range mapping



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# File 'lib/rmasm/data_primitive.rb', line 186

def process_array_values(values)
  for value in values
    # Try to process as a single value
    if !process_single_value(value)
      if value.is_a?(Array)  # Handle ARRAY value (follow it)
        process_array_values(value)
      elsif value.is_a?(Hash)   # Handle HASH value (follow it)
        process_hash_values(value)
      else
        # Unexpected datatype [%s] with value [%s]. Value must be [%s] in the range [%s]"
        report_error(:R4A14, value.class, value, @type, @type.range)
      end
    end
  end
end

#process_hash_values(hash) ⇒ Object 



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# File 'lib/rmasm/data_primitive.rb', line 214

def process_hash_values(hash)
  hash.each do |index,value|

    # Check that the value is a single char. If yes, take it as a byte value
    if value.is_a?(String)
      value_str = @type.from_str(value)
      # Check that the value is converted?
      if value_str.nil?
        return report_error(:R4A23, value, @type, @type)
      end
      # Check that inside a hash we don't have any more than a single value
      if value_str.length != 1
        return report_error(:R4A94, value, value.length, @type, @type.sizeof)
      end
      # Get only a single value          
      value = value_str[0]
    elsif !@type.valid?(value)
      # return from the do...end, but do not return from the hash.each. We want to list all errors
      return report_error(:R4A03, value, @type, @type.range)
    end

    # Check the index value
    if index.is_a?(Integer)
      # If numeric check that the range is valid (take into account the variable array)
      if index_invalid?(index)
        return report_error(:R4A33, index, @type, @array_size)
      end
      # If index is ok, then register this index => value
      @hash_single[index] = value
    elsif index.is_a?(Range)

      # Check that the range is using integers
      if !(index.begin.is_a?(Integer) && index.end.is_a?(Integer))
        return report_error(:R4A43, index, @type, @array_size)
      end

      # Normalize range value
      r_start = index.begin<0?0:index.begin;
      r_end = index.end<0?@array_size-1:index.end;
      # invert begin,end if begin > end
      if (r_start > r_end )
        r_start, r_end = [r_end, r_start]
      end
      if index_invalid?(r_start)
        return report_error(:R4A53, r_start, index, @type, @array_size)
      end
      if index_invalid?(r_end)
        return report_error(:R4A53, r_end, index, @type, @array_size)
      end
      @hash_range[Range.new(r_start,r_end)] = value
    else
      return report_error(:R4A63, index, @type, @array_size)
    end
  end
end

#process_single_value(value) ⇒ Object

Return true if the value was processed. “true” does not imply that the value is in the correct range.



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# File 'lib/rmasm/data_primitive.rb', line 159

def process_single_value(value)
  if value.is_a?(Numeric)  # Handle NUMERIC value
    # Does the type accept this value?
    if @type.valid?(value)
      # add this value
      @values << value
    else
      # If not, report an error and continue
      report_error(:R4A03, value, @type, @type.range)
    end
    return true
  elsif value.is_a?(String) # Handle STRING value
    # Does the type accept a conversion from a string?
    value_str = @type.from_str(value)
    if value_str.nil?
      report_error(:R4A23, value, @type, @type)
    else
      @values = @values + value_str
    end
    return true
  end
  return false
end

#report_error(symbol, *args) ⇒ Object 



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# File 'lib/rmasm/data_primitive.rb', line 153

def report_error(symbol,*args)
  @errors += 1
  Report.error(symbol, *args)
end