edge case handleing

Library/Homebrew/api.rb

@@ -30,6 +30,8 @@ def self.fetch(endpoint)
       cache[endpoint] = JSON.parse(output.stdout, freeze: true)
     rescue JSON::ParserError
       raise ArgumentError, "Invalid JSON file: #{Tty.underline}#{api_url}#{Tty.reset}"
+    rescue => e
+      raise "An error occurred while fetching the API response: #{e.message}"
     end
 
     sig {
@@ -104,6 +106,8 @@ def self.fetch_json_api_file(endpoint, target: HOMEBREW_CACHE_API/endpoint,
         odie "Cannot download non-corrupt #{url}!" if retry_count > Homebrew::EnvConfig.curl_retries.to_i
 
         retry
+      rescue => e
+        raise "An error occurred while fetching the JSON API file: #{e.message}"
       end
 
       if endpoint.end_with?(".jws.json")

Library/Homebrew/build.rb

@@ -188,6 +188,9 @@ def install
           end
         end
       end
+    rescue => e
+      onoe "An error occurred during the installation of #{formula.full_name}: #{e.message}"
+      raise
     end
   end
 

Library/Homebrew/cask_dependent.rb

@@ -15,6 +15,8 @@ class Requirement < ::Requirement
   attr_reader :cask
 
   def initialize(cask)
+    raise ArgumentError, "Cask cannot be nil" if cask.nil?
+
     @cask = cask
   end
 
@@ -27,6 +29,8 @@ def full_name
   end
 
   def runtime_dependencies
+    raise "Cask is not installed" unless @cask.installed?
+
     deps.flat_map { |dep| [dep, *dep.to_formula.runtime_dependencies] }.uniq
   end
 

Library/Homebrew/cmd/deps.rb

@@ -226,10 +226,18 @@ def deps_for_dependent(dependency, recursive: false)
         end
 
         deps + reqs.to_a
+      rescue => e
+        onoe "Error processing dependency: #{dependency.name}"
+        onoe e.message
+        []
       end
 
       def deps_for_dependents(dependents, recursive: false, &block)
         dependents.map { |d| deps_for_dependent(d, recursive:) }.reduce(&block)
+      rescue => e
+        onoe "Error processing dependents"
+        onoe e.message
+        []
       end
 
       def check_head_spec(dependents)

Library/Homebrew/debrew.rb

@@ -130,10 +130,30 @@ def self.debug(exception)
             puts "When you exit this shell, you will return to the menu."
             interactive_shell
           end
+
+          menu.choice(:log) do
+            puts "Logging exception details to a file."
+            log_exception_details(exception)
+          end
+
+          menu.choice(:retry) do
+            puts "Retrying the operation."
+            return :retry
+          end
         end
       end
     ensure
       mu_unlock
     end
   end
+
+  def self.log_exception_details(exception)
+    File.open("debrew_exception.log", "a") do |file|
+      file.puts "Exception: #{exception.class.name}"
+      file.puts "Message: #{exception.message}"
+      file.puts "Backtrace:"
+      exception.backtrace.each { |line| file.puts line }
+      file.puts "-" * 40
+    end
+  end
 end

Library/Homebrew/dependency.rb

@@ -78,6 +78,8 @@ def installed?(minimum_version: nil, minimum_revision: nil)
     else
       installed_version.version > minimum_version
     end
+  rescue => e
+    raise "Error checking if dependency is installed: #{e.message}"
   end
 
   def satisfied?(inherited_options = [], minimum_version: nil, minimum_revision: nil)
@@ -139,6 +141,10 @@ def expand(dependent, deps = dependent.deps, cache_key: nil, &block)
       deps.each do |dep|
         next if dependent.name == dep.name
 
+        if @expand_stack.include?(dep.name)
+          raise "Circular dependency detected: #{dependent.name} -> #{dep.name}"
+        end
+
         case action(dependent, dep, &block)
         when :prune
           next

Library/Homebrew/dependency_collector.rb

@@ -151,6 +151,8 @@ def parse_spec(spec, tags)
       spec
     when Class
       parse_class_spec(spec, tags)
+    else
+      raise ArgumentError, "Unsupported dependency specification: #{spec.inspect}"
     end
   end
 
@@ -218,6 +220,8 @@ def parse_url_spec(url, tags)
     when ".lz"          then Dependency.new("lzip", [*tags, :implicit])
     when ".rar"         then Dependency.new("libarchive", [*tags, :implicit])
     when ".7z"          then Dependency.new("p7zip", [*tags, :implicit])
+    else
+      raise ArgumentError, "Unsupported URL extension: #{File.extname(url)}"
     end
   end
 end

Library/Homebrew/exceptions.rb

@@ -791,3 +791,24 @@ def initialize(strongly_connected_components)
     EOS
   end
 end
+
+# Raised when a dependency is missing.
+class MissingDependencyError < RuntimeError
+  def initialize(dependency)
+    super "Missing dependency: #{dependency}"
+  end
+end
+
+# Raised when a circular dependency is detected.
+class CircularDependencyError < RuntimeError
+  def initialize(dependency)
+    super "Circular dependency detected: #{dependency}"
+  end
+end
+
+# Raised when a dependency installation fails.
+class DependencyInstallationError < RuntimeError
+  def initialize(dependency, reason)
+    super "Failed to install dependency #{dependency}: #{reason}"
+  end
+end

Library/Homebrew/formula_assertions.rb

@@ -53,5 +53,31 @@ def pipe_output(cmd, input = nil, result = nil)
       puts output if verbose?
       raise
     end
+
+    # Asserts that the given block raises an exception of the specified type.
+    #
+    # @api public
+    sig { params(exception: T.class_of(Exception), message: T.nilable(String)).void }
+    def assert_raises(exception, message = nil, &block)
+      raised = false
+      begin
+        block.call
+      rescue exception
+        raised = true
+      end
+      assert raised, message || "Expected #{exception} to be raised"
+    end
+
+    # Asserts that the given block does not raise any exceptions.
+    #
+    # @api public
+    sig { params(message: T.nilable(String)).void }
+    def assert_nothing_raised(message = nil, &block)
+      begin
+        block.call
+      rescue Exception => e
+        flunk message || "Expected no exceptions, but raised #{e.class}: #{e.message}"
+      end
+    end
   end
 end

Library/Homebrew/formula_auditor.rb

@@ -99,6 +99,7 @@ def audit_file
           [versioned_aliases, valid_main_alias_names, valid_other_alias_names].each do |array|
             array.map! { |a| "#{formula.tap}/#{a}" }
           end
+
         end
 
         valid_versioned_aliases = versioned_aliases & valid_main_alias_names
@@ -985,7 +986,12 @@ def audit
         next if only_audits&.exclude?(name)
         next if except_audits&.include?(name)
 
-        send(audit_method_name)
+        begin
+          send(audit_method_name)
+        rescue => e
+          problem "Error during audit: #{e.message}"
+          next
+        end
       end
     end
 

Library/Homebrew/formula_installer.rb

@@ -480,7 +480,7 @@ def install
     if pour_bottle?
       begin
         pour
-      rescue Exception # rubocop:disable Lint/RescueException
+      rescue Exception => e # rubocop:disable Lint/RescueException
         # any exceptions must leave us with nothing installed
         ignore_interrupts do
           begin
@@ -530,6 +530,9 @@ def install
     opoo "Nothing was installed to #{formula.prefix}" unless formula.latest_version_installed?
     end_time = Time.now
     Homebrew.messages.package_installed(formula.name, end_time - start_time)
+  rescue Exception => e # rubocop:disable Lint/RescueException
+    onoe "An error occurred during the installation of #{formula.full_name}: #{e.message}"
+    raise
   end
 
   sig { void }