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.



3
4
5
6
7
8
 
# 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 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# 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 



35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# 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