Class: Slither::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/slither/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(definition, file_io) ⇒ Parser

Returns a new instance of Parser.

[View source]

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# File 'lib/slither/parser.rb', line 3

def initialize(definition, file_io)
  @definition = definition
  @file = file_io
  # This may be used in the future for non-linear or repeating sections
  @mode = :linear
end

Instance Method Details

#parse ⇒ Object

[View source]

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# File 'lib/slither/parser.rb', line 10

def parse
  parsed = {}

  @file.each_line do |line|
    line&.chomp!

    next if line.empty?

    @definition.sections.each do |section|
      if section.match(line)
        validate_length(line, section)
        parsed = fill_content(line, section, parsed)
      end
    end
  end

  @definition.sections.each do |section|
    unless parsed[section.name] || section.optional
      raise(Slither::RequiredSectionNotFoundError,
            "Required section '#{section.name}' was not found.")
    end
  end
  parsed
end

#parse_by_bytes ⇒ Object

[View source]

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# File 'lib/slither/parser.rb', line 35

def parse_by_bytes
  parsed = {}

  all_section_lengths = @definition.sections.map(&:length)
  byte_length = all_section_lengths.max
  all_section_lengths.each do |bytes|
    next unless bytes != byte_length

    raise(
      Slither::SectionsNotSameLengthError, "All sections must have the same number of bytes for parse by bytes"
    )
  end

  while (record = @file.read(byte_length))

    unless remove_newlines! && byte_length == record.length
      parsed_line = parse_for_error_message(record)
      raise(Slither::LineWrongSizeError, "Line wrong size: No newline at #{byte_length} bytes. #{parsed_line}")
    end

    record.force_encoding(@file.external_encoding)

    @definition.sections.each do |section|
      parsed = fill_content(record, section, parsed) if section.match(record)
    end
  end

  @definition.sections.each do |section|
    unless parsed[section.name] || section.optional
      raise(Slither::RequiredSectionNotFoundError,
            "Required section '#{section.name}' was not found.")
    end
  end
  parsed
end