audit: Port rules from line_problems to rubocop part 3

2 files changed, 71 insertions, 8 deletions

diff --git a/Library/Homebrew/rubocops/extend/formula_cop.rb b/Library/Homebrew/rubocops/extend/formula_cop.rb
index f8864538a..991551585 100644
--- a/Library/Homebrew/rubocops/extend/formula_cop.rb
+++ b/Library/Homebrew/rubocops/extend/formula_cop.rb
@@ -3,12 +3,13 @@ require "parser/current"
 module RuboCop
   module Cop
     class FormulaCop < Cop
+      attr_accessor :file_path
       @registry = Cop.registry
 
       # This method is called by RuboCop and is the main entry point
       def on_class(node)
-        file_path = processed_source.buffer.name
-        return unless file_path_allowed?(file_path)
+        @file_path = processed_source.buffer.name
+        return unless file_path_allowed?
         return unless formula_class?(node)
         return unless respond_to?(:audit_formula)
         class_node, parent_class_node, @body = *node
@@ -99,8 +100,7 @@ module RuboCop
       def find_method_with_args(node, method_name, *args)
         methods = find_every_method_call_by_name(node, method_name)
         methods.each do |method|
-          next unless parameters_passed?(method, *args)
-          yield method
+          yield method if parameters_passed?(method, *args)
         end
       end
 
@@ -111,7 +111,7 @@ module RuboCop
       def find_instance_method_call(node, instance, method_name)
         methods = find_every_method_call_by_name(node, method_name)
         methods.each do |method|
-          next unless method.receiver && method.receiver.const_name == instance
+          next unless method.receiver && (method.receiver.const_name == instance || method.receiver.method_name == instance)
           @offense_source_range = method.source_range
           @offensive_node = method
           yield method
@@ -400,6 +400,12 @@ module RuboCop
         method_name(component_node) if component_node.def_type?
       end
 
+      # Returns the formula tap
+      def formula_tap
+        return unless match_obj = @file_path.match(%r{/(homebrew-\w+)/})
+        match_obj[1]
+      end
+
       def problem(msg)
         add_offense(@offensive_node, @offense_source_range, msg)
       end
@@ -411,11 +417,11 @@ module RuboCop
         class_node && string_content(class_node) == "Formula"
       end
 
-      def file_path_allowed?(file_path)
+      def file_path_allowed?
         paths_to_exclude = [%r{/Library/Homebrew/compat/},
                             %r{/Library/Homebrew/test/}]
-        return true if file_path.nil? # file_path is nil when source is directly passed to the cop eg., in specs
-        file_path !~ Regexp.union(paths_to_exclude)
+        return true if @file_path.nil? # file_path is nil when source is directly passed to the cop eg., in specs
+        @file_path !~ Regexp.union(paths_to_exclude)
       end
     end
   end
diff --git a/Library/Homebrew/rubocops/lines_cop.rb b/Library/Homebrew/rubocops/lines_cop.rb
index 536f5e2ec..7bf9e6056 100644
--- a/Library/Homebrew/rubocops/lines_cop.rb
+++ b/Library/Homebrew/rubocops/lines_cop.rb
@@ -73,7 +73,64 @@ module RuboCop
             next unless block_arg.source.size>1
             problem "\"inreplace <filenames> do |s|\" is preferred over \"|#{block_arg.source}|\"."
           end
+
+          [:rebuild, :version_scheme].each do |m|
+            find_method_with_args(body_node, m, 0) do
+              problem "'#{m} 0' should be removed"
+            end
+          end
+
+          [:mac?, :linux?].each do |m|
+            next unless formula_tap == "homebrew-core"
+            find_instance_method_call(body_node, "OS", m) do |check|
+              problem "Don't use #{check.source}; Homebrew/core only supports macOS"
+            end
+          end
+
+          find_method_with_args(body_node, :fails_with, :llvm) do
+            problem "'fails_with :llvm' is now a no-op so should be removed"
+          end
+
+          find_method_with_args(body_node, :system, /^(otool|install_name_tool|lipo)$/) do
+            problem "Use ruby-macho instead of calling #{@offensive_node.source}"
+          end
+          #
+          find_method_with_args(body_node, :system, /npm/, /install/) do |m|
+            next if @formula_name =~ /^kibana(\@\d+(\.\d+)?)?$/
+            problem "Use Language::Node for npm install args" unless languageNode?(m)
+          end
+          if find_method_def(body_node, :test)
+            problem "Use new-style test definitions (test do)"
+          end
+
+          if find_method_def(body_node, :options)
+            problem "Use new-style option definitions"
+          end
+
+          find_method_with_args(body_node, :skip_clean, :all) do
+            problem "`skip_clean :all` is deprecated; brew no longer strips symbols\n" \
+              "\tPass explicit paths to prevent Homebrew from removing empty folders."
+          end
+
+          find_instance_method_call(body_node, :build, :universal?) do
+            problem "macOS has been 64-bit only so build.universal? is deprecated."
+          end
+
+          find_instance_method_call(body_node, "ENV", :universal_binary) do
+            problem "macOS has been 64-bit only since 10.6 so ENV.universal_binary is deprecated."
+          end
+
+          find_instance_method_call(body_node, "ENV", :x11) do
+            problem 'Use "depends_on :x11" instead of "ENV.x11"'
+          end
         end
+
+        # This is Pattern Matching method for AST
+        # Takes the AST node as argument and yields matching node if block given
+        # Else returns boolean for the match
+        def_node_search :languageNode?, <<-PATTERN
+          (const (const nil :Language) :Node)
+        PATTERN
       end
     end
   end