Class: RuboCop::RSpec::ExpectOffense::AnnotatedSource

Inherits:
Object
  • Object
show all
Defined in:
lib/rubocop/rspec/expect_offense.rb

Overview

Parsed representation of code annotated with the `^^^ Message` style

Constant Summary collapse

ANNOTATION_PATTERN = 
/\A\s*\^+ /.freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lines, annotations) ⇒ AnnotatedSource

Note:

annotations are sorted so that reconstructing the annotation text via #to_s is deterministic

Returns a new instance of AnnotatedSource.

Parameters:

  • lines (Array<String>)
  • annotations (Array<(Integer, String)>) —

    each entry is the annotated line number and the annotation text


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# File 'lib/rubocop/rspec/expect_offense.rb', line 172

def initialize(lines, annotations)
  @lines       = lines.freeze
  @annotations = annotations.sort.freeze
end

Class Method Details

.parse(annotated_source) ⇒ AnnotatedSource

Separates annotation lines from source lines. Tracks the real source line number that each annotation corresponds to.

Parameters:

  • annotated_source (String) —

    string passed to the matchers

Returns:


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# File 'lib/rubocop/rspec/expect_offense.rb', line 151

def self.parse(annotated_source)
  source      = []
  annotations = []

  annotated_source.each_line do |source_line|
    if source_line =~ ANNOTATION_PATTERN
      annotations << [source.size, source_line]
    else
      source << source_line
    end
  end

  new(source, annotations)
end

Instance Method Details

#plain_source ⇒ String

Return the plain source code without annotations

Returns:


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# File 'lib/rubocop/rspec/expect_offense.rb', line 213

def plain_source
  lines.join
end

#to_s ⇒ String

Construct annotated source string (like what we parse)

Reconstruct a deterministic annotated source string. This is useful for eliminating semantically irrelevant annotation ordering differences.

Examples:

standardization


source1 = AnnotatedSource.parse(<<-RUBY)
line1
^ Annotation 1
 ^^ Annotation 2
RUBY

source2 = AnnotatedSource.parse(<<-RUBY)
line1
 ^^ Annotation 2
^ Annotation 1
RUBY

source1.to_s == source2.to_s # => true

Returns:


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# File 'lib/rubocop/rspec/expect_offense.rb', line 200

def to_s
  reconstructed = lines.dup

  annotations.reverse_each do |line_number, annotation|
    reconstructed.insert(line_number, annotation)
  end

  reconstructed.join
end

#with_offense_annotations(offenses) ⇒ self

Annotate the source code with the RuboCop offenses provided

Parameters:

Returns:

  • (self) 

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# File 'lib/rubocop/rspec/expect_offense.rb', line 222

def with_offense_annotations(offenses)
  offense_annotations =
    offenses.map do |offense|
      indent     = ' ' * offense.column
      carets     = '^' * offense.column_length

      [offense.line, "#{indent}#{carets} #{offense.message}\n"]
    end

  self.class.new(lines, offense_annotations)
end