Class: TypeGuessr::MCP::StandaloneRuntime

Inherits:
Object
  • Object
show all
Defined in:
lib/type_guessr/mcp/standalone_runtime.rb

Overview

Standalone runtime that mirrors RuntimeAdapter’s query interface without depending on ruby-lsp’s GlobalState.

Provides type inference, method signature lookup, and method search for use by the MCP server. All public query methods are thread-safe.

Instance Method Summary collapse

Constructor Details

#initialize(converter:, location_index:, signature_registry:, method_registry:, ivar_registry:, cvar_registry:, resolver:, signature_builder:, code_index:) ⇒ StandaloneRuntime

Returns a new instance of StandaloneRuntime.

Parameters:



20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 20

def initialize(converter:, location_index:, signature_registry:, method_registry:,
               ivar_registry:, cvar_registry:, resolver:, signature_builder:, code_index:)
  @converter = converter
  @location_index = location_index
  @signature_registry = signature_registry
  @method_registry = method_registry
  @ivar_registry = ivar_registry
  @cvar_registry = cvar_registry
  @resolver = resolver
  @signature_builder = signature_builder
  @code_index = code_index
  @mutex = Mutex.new
end

Instance Method Details

#build_member_index! ⇒ Object

Delegate member_index build to code_index



70
71
72
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 70

def build_member_index!
  @code_index.build_member_index!
end

#finalize_index! ⇒ Object

Finalize location index after all files are indexed



81
82
83
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 81

def finalize_index!
  @mutex.synchronize { @location_index.finalize! }
end

#index_parsed_file(file_path, prism_result) ⇒ Object

Index a pre-parsed file into the IR graph

Parameters:

  • file_path (String) —

    Absolute path to the file

  • prism_result (Prism::ParseResult) —

    Parsed AST



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 37

def index_parsed_file(file_path, prism_result)
  return unless prism_result.value

  @mutex.synchronize do
    @location_index.remove_file(file_path)
    @method_registry.remove_file(file_path)
    @resolver.clear_cache

    context = Core::Converter::PrismConverter::Context.new(
      file_path: file_path,
      location_index: @location_index,
      method_registry: @method_registry,
      ivar_registry: @ivar_registry,
      cvar_registry: @cvar_registry
    )

    prism_result.value.statements&.body&.each do |stmt|
      @converter.convert(stmt, context)
    end
  end
end

#method_signature(class_name, method_name) ⇒ Hash

Get method signature for a class#method

Parameters:

  • class_name (String) —

    Fully qualified class name (e.g., “User”, “Admin::User”)

  • method_name (String) —

    Method name (e.g., “save”, “initialize”)

Returns:

  • (Hash) —

    Signature result with :source and :signature keys, or :error on failure



94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 94

def method_signature(class_name, method_name)
  def_node = @mutex.synchronize { @method_registry.lookup(class_name, method_name) }

  unless def_node
    entry = @signature_registry.lookup(class_name, method_name)

    if entry.is_a?(Core::Registry::SignatureRegistry::MethodEntry)
      return {
        source: "rbs",
        signatures: entry.signature_strings,
        class_name: class_name,
        method_name: method_name
      }
    end

    if entry.is_a?(Core::Registry::SignatureRegistry::GemMethodEntry)
      return {
        source: "gem_cache",
        signatures: entry.signature_strings,
        class_name: class_name,
        method_name: method_name
      }
    end

    return { error: "Method not found: #{class_name}##{method_name}", class_name: class_name,
             method_name: method_name }
  end

  sig = @mutex.synchronize { @signature_builder.build_from_def_node(def_node) }
  {
    source: "project",
    signature: sig.to_s,
    class_name: class_name,
    method_name: method_name
  }
rescue StandardError => e
  { error: e.message, class_name: class_name, method_name: method_name }
end

#method_signatures(methods) ⇒ Array<Hash>

Get signatures for multiple methods in one call

Parameters:

  • methods (Array<Hash>) —

    Array of { class_name:, method_name: } hashes

Returns:

  • (Array<Hash>) —

    Array of signature results (same format as method_signature)



136
137
138
139
140
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 136

def method_signatures(methods)
  methods.map do |entry|
    method_signature(entry[:class_name], entry[:method_name])
  end
end

#method_source(class_name, method_name) ⇒ Hash

Get source code for a single method

Parameters:

  • class_name (String) —

    Fully qualified class name

  • method_name (String) —

    Method name

Returns:

  • (Hash) —

    Source result with :source, :file_path, :line keys, or :error on failure



146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 146

def method_source(class_name, method_name)
  def_node = @mutex.synchronize { @method_registry.lookup(class_name, method_name) }
  unless def_node
    return { error: "Method not found: #{class_name}##{method_name}",
             class_name: class_name, method_name: method_name }
  end

  file_path = @mutex.synchronize { @method_registry.source_file_for(class_name, method_name) }
  unless file_path
    return { error: "Source file not found: #{class_name}##{method_name}",
             class_name: class_name, method_name: method_name }
  end

  source = File.read(file_path)
  prism_result = Prism.parse(source)
  node_context = RubyLsp::RubyDocument.locate(
    prism_result.value, def_node.loc,
    code_units_cache: prism_result.code_units_cache(Encoding::UTF_8)
  )
  prism_def = node_context.node.is_a?(Prism::DefNode) ? node_context.node : node_context.parent

  {
    class_name: class_name,
    method_name: method_name,
    source: prism_def.slice,
    file_path: file_path,
    line: prism_def.location.start_line
  }
rescue StandardError => e
  { error: e.message, class_name: class_name, method_name: method_name }
end

#method_sources(methods) ⇒ Array<Hash>

Get source code for multiple methods in one call

Parameters:

  • methods (Array<Hash>) —

    Array of { class_name:, method_name: } hashes

Returns:

  • (Array<Hash>) —

    Array of source results (same format as method_source)



181
182
183
184
185
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 181

def method_sources(methods)
  methods.map do |entry|
    method_source(entry[:class_name], entry[:method_name])
  end
end

#preload_signatures! ⇒ Object

Preload RBS signatures for inference



86
87
88
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 86

def preload_signatures!
  @signature_registry.preload
end

#refresh_member_index!(file_uri) ⇒ Object

Delegate member_index refresh to code_index

Parameters:

  • file_uri (URI::Generic) —

    File URI



76
77
78
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 76

def refresh_member_index!(file_uri)
  @code_index.refresh_member_index!(file_uri)
end

#remove_indexed_file(file_path) ⇒ Object

Remove all indexed data for a file

Parameters:

  • file_path (String) —

    Absolute path to the file



61
62
63
64
65
66
67
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 61

def remove_indexed_file(file_path)
  @mutex.synchronize do
    @location_index.remove_file(file_path)
    @method_registry.remove_file(file_path)
    @resolver.clear_cache
  end
end

#search_methods(query, include_signatures: false) ⇒ Array<Hash>

Search for methods matching a query pattern

Parameters:

  • query (String) —

    Search query (e.g., “User#save”, “save”, “initialize”)

  • include_signatures (Boolean) (defaults to: false) —

    When true, include inferred signature for each result

Returns:

  • (Array<Hash>) —

    Array of matching methods with :class_name, :method_name, :full_name, :location



191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
 
# File 'lib/type_guessr/mcp/standalone_runtime.rb', line 191

def search_methods(query, include_signatures: false)
  @mutex.synchronize do
    results = @method_registry.search(query)
    results.map do |class_name, method_name, def_node|
      entry = {
        class_name: class_name,
        method_name: method_name,
        full_name: "#{class_name}##{method_name}",
        location: def_node.loc ? { offset: def_node.loc } : nil
      }
      if include_signatures
        sig = @signature_builder.build_from_def_node(def_node)
        entry[:signature] = sig.to_s
      end
      entry
    end
  end
rescue StandardError => e
  { error: e.message }
end