Update to latest parser, use Prism gem instead (#96)

Gemfile

@@ -57,7 +57,7 @@ gem "httparty", "~> 0.21.0"
 gem "view_component", "~> 3.6"
 
 # Interact with the Ruby syntax tree
-gem "yarp", "~> 0.12"
+gem "prism", "~> 0.13"
 
 # A pure Ruby code highlighter that is compatible with Pygments
 gem "rouge", "~> 4.1"

Gemfile.lock

@@ -197,6 +197,7 @@ GEM
       ast (~> 2.4.1)
       racc
     pg (1.5.4)
+    prism (0.13.0)
     psych (5.1.0)
       stringio
     public_suffix (5.0.3)
@@ -315,7 +316,6 @@ GEM
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     yard (0.9.34)
-    yarp (0.12.0)
     zeitwerk (2.6.11)
 
 PLATFORMS
@@ -338,6 +338,7 @@ DEPENDENCIES
   jsbundling-rails
   meta-tags
   pg (~> 1.5)
+  prism (~> 0.13)
   puma (~> 6.4)
   rails (~> 7.1.0.beta1)
   rails-html-sanitizer (~> 1.6)
@@ -357,7 +358,6 @@ DEPENDENCIES
   view_component (~> 3.6)
   web-console
   yard (~> 0.9.34)
-  yarp (~> 0.12)
 
 RUBY VERSION
    ruby 3.2.2p53

app/models/analyzer.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Analyzer
-  class Visitor < YARP::Visitor
+  class Visitor < Prism::Visitor
     # This object represents a set of comments being returned from the parser
     # for a given file. It can be used to quickly access a set of comments at
     # a given line number.
@@ -79,14 +79,14 @@ def with(node)
 
       # Returns the components of the constant path for the given node.
       def path_for(node)
-        case node
-        when YARP::ConstantPathNode
+        case node.type
+        when :constant_path_node
           if node.parent
             path_for(node.parent).concat(path_for(node.child))
           else
             [ROOT].concat(path_for(node.child))
           end
-        when YARP::ConstantReadNode
+        when :constant_read_node
           [node.location.slice]
         else
           :unprocessable
@@ -151,12 +151,12 @@ def visit_class_node(node)
         end
 
         statements =
-          case node.body
+          case node.body&.type
           when nil
             []
-          when YARP::StatementsNode
+          when :statements_node
             node.body.body
-          when YARP::BeginNode
+          when :begin_node
             node.body.statements.body
           else
             raise "Unexpected statements node: #{node.body.inspect}"
@@ -169,13 +169,13 @@ def visit_class_node(node)
         # being called as a top-level statement inside of a class definition.
         statements.each do |statement|
           # Only looking at calls.
-          next unless statement.is_a?(YARP::CallNode)
+          next unless statement.is_a?(Prism::CallNode)
 
           # Only looking at #include and #extend.
           next unless ["include", "extend"].include?(statement.message)
 
           # Only looking for calls that have arguments.
-          next unless statement.arguments.is_a?(YARP::ArgumentsNode)
+          next unless statement.arguments.is_a?(Prism::ArgumentsNode)
 
           target =
             if statement.message == "include"
@@ -211,7 +211,7 @@ def visit_class_node(node)
     end
 
     def visit_constant_write_node(node)
-      constant_nesting.with(YARP::ConstantReadNode.new(node.name, node.name_loc)) do |constant_path|
+      constant_nesting.with(Prism::ConstantReadNode.new(node.name, node.name_loc)) do |constant_path|
         analyzer.consts << constant_path.join("::")
 
         super
@@ -240,7 +240,7 @@ def visit_def_node(node)
       case node.receiver
       when nil
         context.instance_methods << InstanceMethod.new(**kwargs)
-      when YARP::SelfNode
+      when Prism::SelfNode
         context.class_methods << ClassMethod.new(**kwargs)
       else # rubocop:disable Style/EmptyElse
         # In this case, we don't actually know what to do. The receiver of the
@@ -356,7 +356,7 @@ def to_s
   end
 
   def analyze_code(path, code)
-    result = YARP.parse(code)
+    result = Prism.parse(code)
     result.value.accept(Visitor.new(self, @gem, path, result.comments))
     self
   end