module Rigor::ModuleGraph::Inflector

Minimal Rails-style inflection helpers. Used to infer a class name from a Rails association argument (+has_many :invoices+→ +Invoice+).

Deliberately tiny — we don’t ship +ActiveSupport::Inflector+ and its irregular-noun table; the plugin records its guess at +confidence: “syntax”+ so a downstream reviewer can spot mis-singularised plurals in the graph. Apps that need exact association class names should rely on +class_name:+ overrides in the source, which the Analyzer reads verbatim.

Constants

IRREGULAR_PLURALS

Public Instance Methods

camelize (word)

Source

# File lib/rigor/module_graph/inflector.rb, line 45
def camelize(word)
  word.to_s.split("_").map { |seg| seg.empty? ? seg : seg[0].upcase + seg[1..] }.join
end

+“foo_bar_baz” → “FooBarBaz”+. Plain Rails camelize without acronym handling.

class_name_for (symbol_or_string)

Source

# File lib/rigor/module_graph/inflector.rb, line 51
def class_name_for(symbol_or_string)
  camelize(singularize(symbol_or_string.to_s))
end

+“invoices” → “Invoice”+ — the common Rails association argument to class-name path.

preserve_case (replacement, original)

Source

# File lib/rigor/module_graph/inflector.rb, line 55
def preserve_case(replacement, original)
  # The irregular table is lower-case; preserve a leading
  # capital from the source so +People+ → +Person+.
  return replacement.capitalize if original[0] =~ /[A-Z]/

  replacement.dup
end

singularize (word)

Source

# File lib/rigor/module_graph/inflector.rb, line 32
def singularize(word)
  downcased = word.downcase
  return word.dup if word.empty?
  return preserve_case(IRREGULAR_PLURALS[downcased], word) if IRREGULAR_PLURALS.key?(downcased)
  return word[0..-4] + "y" if word =~ /ies\z/i && word.size > 3
  return word[0..-3] if word =~ /ses\z/i # buses → bus, classes → clas... we accept loss
  return word[0..-2] if word.end_with?("s") && !word.end_with?("ss")

  word.dup
end

@param word [String] @return [String] best-effort singular form