diff options
| -rw-r--r-- | Library/Homebrew/exceptions.rb | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb index dfd60549d..130d3f505 100644 --- a/Library/Homebrew/exceptions.rb +++ b/Library/Homebrew/exceptions.rb @@ -68,6 +68,43 @@ class TapFormulaUnavailableError < FormulaUnavailableError end end +class FormulaClassUnavailableError < FormulaUnavailableError + attr_reader :path + attr_reader :class_name + attr_reader :class_list + + def initialize(name, path, class_name, class_list) + @path = path + @class_name = class_name + @class_list = class_list + super name + end + + def to_s + s = super + s += "\nIn formula file: #{path}" + s += "\nExpected to find class #{class_name}, but #{class_list_s}." + s + end + + private + + def class_list_s + formula_class_list = class_list.select { |klass| klass < Formula } + if class_list.empty? + "found no classes" + elsif formula_class_list.empty? + "only found: #{format_list(class_list)} (not derived from Formula!)" + else + "only found: #{format_list(formula_class_list)}" + end + end + + def format_list(class_list) + class_list.map { |klass| klass.name.split("::")[-1] }.join(", ") + end +end + class TapFormulaAmbiguityError < RuntimeError attr_reader :name, :paths, :formulae |