Module: OrigenTesters::Decompiler::Pattern::Splitter

Included in:
OrigenTesters::Decompiler::Pattern
Defined in:
lib/origen_testers/decompiler/pattern/splitter.rb

Constant Summary collapse

REQUIRED_KEYS =
[:pinlist_start, :vectors_start, :vectors_end]
OPTIONAL_KEYS =
[:separator, :vectors_include_start_line, :vectors_include_end_line]

Instance Method Summary collapse

Instance Method Details

#check_match(matcher, line, index, indices) ⇒ Object


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 99

def check_match(matcher, line, index, indices)
  if matcher.respond_to?(:call)
    matcher.call(line: line, index: index, current_indices: indices)
  elsif matcher.is_a?(Regexp)
    line =~ matcher
  elsif matcher.is_a?(String)
    line.start_with?(matcher)
  else
    fail "Splitter does not know how to match given matcher of class #{matcher.class}"
  end
end

#raw_endmatterObject


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 50

def raw_endmatter
  raw_lines(section_indices[:endmatter_start], section_indices[:endmatter_end])
end

#raw_frontmatterObject


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 38

def raw_frontmatter
  raw_lines(section_indices[:frontmatter_start], section_indices[:frontmatter_end])
end

#raw_lines(start, stop, &block) ⇒ Object


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 12

def raw_lines(start, stop, &block)
  retn_lines = []
  _run_line_ = lambda do |line, index, retn_lines, &block|
    if index > stop
      break
    elsif index >= start
      if block_given?
        yield
      else
        retn_lines << line
      end
    end
  end

  if direct_source?
    source.split("\n").map { |l| "#{l}\n" }.each_with_index do |line, index|
      _run_line_.call(line, index, retn_lines, &block)
    end
  else
    File.foreach(source).each_with_index do |line, index|
      _run_line_.call(line, index, retn_lines, &block)
    end
  end
  retn_lines
end

#raw_pinlistObject


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 42

def raw_pinlist
  raw_lines(section_indices[:pinlist_start], section_indices[:pinlist_end])
end

#raw_vectors(&block) ⇒ Object


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 46

def raw_vectors(&block)
  raw_lines(section_indices[:vectors_start], section_indices[:vectors_end])
end

#section_indicesObject


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 8

def section_indices
  @section_indices
end

#split(pinlist_start:, vectors_start:, vectors_end:, vectors_include_start_line: false, vectors_include_end_line: false, &block) ⇒ Hash

Splits the pattern into gour secionts using regexes:

1. Frontmatter
2. Pin List
3. Vectors
4. Endmatter

The idea is that each section can be delimited by a line that matches some regex (and is not considered a comment line). The pattern will be read line-by-line, looking for the regexes. We're defining the pattern section as such:

- Frontmatter starts at the beginning of the pattern and ends at the start of the pattern header.
- Vectors start from the end of the pattern header and go until the end of the vectors.
- Endmatter starts at the end of the vectors and ends at the end of the file.
  - Its possible (and fine) for endmatter to be non-existant, or even not allowed.
  - In the latter case, the endvector symbol should the EoF symbol.

rubocop:disable Metrics/ParameterLists

Returns:

  • (Hash)

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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 98

def split(pinlist_start:, vectors_start:, vectors_end:, vectors_include_start_line: false, vectors_include_end_line: false, &block)
  def check_match(matcher, line, index, indices)
    if matcher.respond_to?(:call)
      matcher.call(line: line, index: index, current_indices: indices)
    elsif matcher.is_a?(Regexp)
      line =~ matcher
    elsif matcher.is_a?(String)
      line.start_with?(matcher)
    else
      fail "Splitter does not know how to match given matcher of class #{matcher.class}"
    end
  end

  if File.zero?(source)
    Origen.log.error('Parsing Error!')
    Origen.log.error("Pattern #{source} has size zero!")
    Origen.log.error('Decompiling empty files is not supported.')

    fail(OrigenTesters::Decompiler::ParseError, "Empty or non-readable pattern file #{source}")
  end

  indices = {
    frontmatter_start: 0,
    endmatter_end:     -1
  }
  if block_given?
    fail 'Blocks are not yet supported!'
  else
    if vectors_end == -1
      indices[:vectors_end] = -1
      indices[:endmatter_start] = -1
    end
    _split_ = lambda do |line, index, indices|
      if !indices[:pinlist_start]
        if check_match(pinlist_start, line, index, indices)
          indices[:frontmatter_end] = index - 1
          indices[:pinlist_start] = index
        end
      elsif !indices[:vectors_start]
        if check_match(vectors_start, line, index, indices)
          indices[:pinlist_end] = index - 1
          vectors_include_start_line ? indices[:vectors_start] = index : indices[:vectors_start] = index + 1
        end
      elsif !indices[:vectors_end]
        if check_match(vectors_end, line, index, indices)
          vectors_include_end_line ? indices[:vectors_end] = index : indices[:vectors_end] = index - 1
          indices[:endmatter_start] = index
        end
      end
    end

    if direct_source?
      source.split("\n").each_with_index do |line, index|
        _split_.call(line, index, indices)
      end
    else
      File.foreach(source).each_with_index do |line, index|
        _split_.call(line, index, indices)
      end
    end

    indices
  end
  # rubocop:enable Metrics/ParameterLists
end

#split!Object


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# File 'lib/origen_testers/decompiler/pattern/splitter.rb', line 54

def split!
  section_indices = split(splitter_config)

  # Check that we found each section in the pattern.
  if section_indices[:pinlist_start].nil?
    Origen.log.error('Parsing Error!')
    Origen.log.error("Could not locate the pinlist start in pattern #{source}")
    Origen.log.error("Expected a pattern line to match '#{splitter_config[:pinlist_start]}'")

    fail OrigenTesters::Decompiler::ParseError, "Parsing Error! Could not locate the pinlist start in pattern #{source}"
  elsif section_indices[:vectors_start].nil?
    Origen.log.error('Parsing Error!')
    Origen.log.error("Could not locate the vector start in pattern #{source}")
    Origen.log.error("Expected a pattern line to match '#{splitter_config[:vector_start]}'")

    fail OrigenTesters::Decompiler::ParseError, "Parsing Error! Could not locate the vector body in pattern #{source}"
  elsif section_indices[:vectors_end].nil?
    Origen.log.error('Parsing Error!')
    Origen.log.error("Could not locate the vector body end in pattern #{source}")
    Origen.log.error("Expected a pattern line to match '#{splitter_config[:vector_end]}'")

    fail OrigenTesters::Decompiler::ParseError, "Parsing Error! Could not locate the vector body end in pattern #{source}"
  end

  @section_indices = section_indices
  @section_indices
end