Class: Rox::Core::ValueCompareExtensions

Inherits:
Object
  • Object
show all
Defined in:
lib/rox/core/roxx/value_compare_extensions.rb

Instance Method Summary collapse

Constructor Details

#initialize(parser) ⇒ ValueCompareExtensions

Returns a new instance of ValueCompareExtensions.



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# File 'lib/rox/core/roxx/value_compare_extensions.rb', line 4

def initialize(parser)
  @parser = parser
end

Instance Method Details

#extendObject



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# File 'lib/rox/core/roxx/value_compare_extensions.rb', line 8

def extend
  @parser.add_operator('lt') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f < op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('lte') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f <= op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('gt') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f > op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('gte') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f >= op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('numne') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f != op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('numeq') do |_parser, stack, _context|
    begin
      op1 = stack.pop
      op2 = stack.pop
      stack.push(op1.to_f == op2.to_f)
    rescue StandardError
      stack.push(false)
    end
  end

  @parser.add_operator('semverNe') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) != Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end

  @parser.add_operator('semverEq') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) == Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end

  @parser.add_operator('semverLt') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) < Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end

  @parser.add_operator('semverLte') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) <= Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end

  @parser.add_operator('semverGt') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) > Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end

  @parser.add_operator('semverGte') do |_parser, stack, _context|
    op1 = stack.pop
    op2 = stack.pop
    if op1.is_a?(String) && op2.is_a?(String)
      version1, version2 = normalize_versions(op1, op2)
      stack.push(Gem::Version.new(version1) >= Gem::Version.new(version2))
    else
      stack.push(false)
    end
  end
end

#normalize_versions(version1, version2) ⇒ Object



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# File 'lib/rox/core/roxx/value_compare_extensions.rb', line 136

def normalize_versions(version1, version2)
  # Gem::Version treats versions "1.1", "1.1.0", "1.1.0.0", etc as equal.
  # Fix this behavior.

  segment_count1 = version1.split('.').length
  segment_count2 = version2.split('.').length

  return [version1, version2] if segment_count1 == segment_count2

  if segment_count1 < segment_count2
    version1 += "#{'.0' * (segment_count2 - segment_count1)}.0"
    version2 += '.1'
  else
    version1 += '.1'
    version2 += "#{'.0' * (segment_count1 - segment_count2)}.0"
  end

  [version1, version2]
end