Issy Long d4d1b4a22a
rubocops/text: Prefer lib/"string" over lib+"string"
- I found a few occurrences of this pattern from
  https://github.com/orgs/Homebrew/projects/5?pane=issue&itemId=97021840,
  that is an automated style request for:
  `core: use / instead of + operator in e.g. (lib+"lv").install "lv.hlp"`.
- Upon adding tests I realised that there's also the `prefix + "bin"`
  case that's already handled differently, so let's combine the handling
  given it's the same `+` that's wrong.
2025-07-11 13:41:58 +01:00

206 lines
8.1 KiB
Ruby

# typed: strict
# frozen_string_literal: true
require "rubocops/extend/formula_cop"
module RuboCop
module Cop
module FormulaAudit
# This cop checks for various problems in a formula's source code.
class Text < FormulaCop
extend AutoCorrector
sig { override.params(formula_nodes: FormulaNodes).void }
def audit_formula(formula_nodes)
node = formula_nodes.node
full_source_content = source_buffer(node).source
if (match = full_source_content.match(/^require ['"]formula['"]$/))
range = source_range(source_buffer(node), match.pre_match.count("\n") + 1, 0, match[0].length)
add_offense(range, message: "`#{match}` is now unnecessary") do |corrector|
corrector.remove(range_with_surrounding_space(range:))
end
end
return if (body_node = formula_nodes.body_node).nil?
if find_method_def(body_node, :plist)
problem "`def plist` is deprecated. Please use services instead: https://docs.brew.sh/Formula-Cookbook#service-files"
end
if (depends_on?("openssl") || depends_on?("openssl@3")) && depends_on?("libressl")
problem "Formulae should not depend on both OpenSSL and LibreSSL (even optionally)."
end
if formula_tap == "homebrew-core"
if depends_on?("veclibfort") || depends_on?("lapack")
problem "Formulae in homebrew/core should use OpenBLAS as the default serial linear algebra library."
end
if find_node_method_by_name(body_node, :keg_only)&.source&.include?("HOMEBREW_PREFIX")
problem "`keg_only` reason should not include `HOMEBREW_PREFIX` " \
"as it creates confusing `brew info` output."
end
end
# processed_source.ast is passed instead of body_node because `require` would be outside body_node
find_method_with_args(processed_source.ast, :require, "language/go") do
problem '`require "language/go"` is no longer necessary or correct'
end
find_instance_method_call(body_node, "Formula", :factory) do
problem "`Formula.factory(name)` is deprecated in favour of `Formula[name]`"
end
find_method_with_args(body_node, :revision, 0) do
problem "`revision 0` is unnecessary"
end
find_method_with_args(body_node, :system, "xcodebuild") do
problem "Use `xcodebuild *args` instead of `system 'xcodebuild', *args`"
end
if !depends_on?(:xcode) && method_called_ever?(body_node, :xcodebuild)
problem "`xcodebuild` needs an Xcode dependency"
end
if (method_node = find_method_def(body_node, :install))
find_method_with_args(method_node, :system, "go", "get") do
problem "Do not use `go get`. Please ask upstream to implement Go vendoring"
end
find_method_with_args(method_node, :system, "cargo", "build") do |m|
next if parameters_passed?(m, [/--lib/])
problem 'Use `"cargo", "install", *std_cargo_args`'
end
end
find_method_with_args(body_node, :system, "dep", "ensure") do |d|
next if parameters_passed?(d, [/vendor-only/])
next if @formula_name == "goose" # needed in 2.3.0
problem 'Use `"dep", "ensure", "-vendor-only"`'
end
find_every_method_call_by_name(body_node, :system).each do |m|
next unless parameters_passed?(m, [/make && make/])
offending_node(m)
problem "Use separate `make` calls"
end
find_every_method_call_by_name(body_node, :+).each do |plus_node|
next unless plus_node.receiver&.send_type?
next unless plus_node.first_argument&.str_type?
receiver_method = plus_node.receiver.method_name
path_arg = plus_node.first_argument.str_content
case receiver_method
when :prefix
next unless (match = path_arg.match(%r{^(bin|include|libexec|lib|sbin|share|Frameworks)(?:/| |$)}))
offending_node(plus_node)
problem "Use `#{match[1].downcase}` instead of `prefix + \"#{match[1]}\"`"
when :bin, :include, :libexec, :lib, :sbin, :share
next if path_arg.empty?
offending_node(plus_node)
good = "#{receiver_method}/\"#{path_arg}\""
problem "Use `#{good}` instead of `#{plus_node.source}`" do |corrector|
corrector.replace(plus_node.loc.expression, good)
end
end
end
body_node.each_descendant(:dstr) do |dstr_node|
dstr_node.each_descendant(:begin) do |interpolation_node|
next unless interpolation_node.source.match?(/#\{\w+\s*\+\s*['"][^}]+\}/)
offending_node(interpolation_node)
problem "Do not concatenate paths in string interpolation"
end
end
end
end
end
module FormulaAuditStrict
# This cop contains stricter checks for various problems in a formula's source code.
class Text < FormulaCop
extend AutoCorrector
sig { override.params(formula_nodes: FormulaNodes).void }
def audit_formula(formula_nodes)
return if (body_node = formula_nodes.body_node).nil?
find_method_with_args(body_node, :go_resource) do
problem "`go_resource`s are deprecated. Please ask upstream to implement Go vendoring"
end
find_method_with_args(body_node, :env, :userpaths) do
problem "`env :userpaths` in homebrew/core formulae is deprecated"
end
share_path_starts_with(body_node, T.must(@formula_name)) do |share_node|
offending_node(share_node)
problem "Use `pkgshare` instead of `share/\"#{@formula_name}\"`"
end
interpolated_share_path_starts_with(body_node, "/#{@formula_name}") do |share_node|
offending_node(share_node)
problem "Use `\#{pkgshare}` instead of `\#{share}/#{@formula_name}`"
end
interpolated_bin_path_starts_with(body_node, "/#{@formula_name}") do |bin_node|
next if bin_node.ancestors.any?(&:array_type?)
offending_node(bin_node)
cmd = bin_node.source.match(%r{\#{bin}/(\S+)})[1]&.delete_suffix('"') || @formula_name
problem "Use `bin/\"#{cmd}\"` instead of `\"\#{bin}/#{cmd}\"`" do |corrector|
corrector.replace(bin_node.loc.expression, "bin/\"#{cmd}\"")
end
end
return if formula_tap != "homebrew-core"
find_method_with_args(body_node, :env, :std) do
problem "`env :std` in homebrew/core formulae is deprecated"
end
end
# Check whether value starts with the formula name and then a "/", " " or EOS.
# If we're checking for "#{bin}", we also check for "-" since similar binaries also don't need interpolation.
sig { params(path: String, starts_with: String, bin: T::Boolean).returns(T::Boolean) }
def path_starts_with?(path, starts_with, bin: false)
ending = bin ? "/|-|$" : "/| |$"
path.match?(/^#{Regexp.escape(starts_with)}(#{ending})/)
end
sig { params(path: String, starts_with: String).returns(T::Boolean) }
def path_starts_with_bin?(path, starts_with)
return false if path.include?(" ")
path_starts_with?(path, starts_with, bin: true)
end
# Find "#{share}/foo"
def_node_search :interpolated_share_path_starts_with, <<~EOS
$(dstr (begin (send nil? :share)) (str #path_starts_with?(%1)))
EOS
# Find "#{bin}/foo" and "#{bin}/foo-bar"
def_node_search :interpolated_bin_path_starts_with, <<~EOS
$(dstr (begin (send nil? :bin)) (str #path_starts_with_bin?(%1)))
EOS
# Find share/"foo"
def_node_search :share_path_starts_with, <<~EOS
$(send (send nil? :share) :/ (str #path_starts_with?(%1)))
EOS
end
end
end
end