Module: MilkTea::LSP::Workspace::WorkspaceCaches

Included in:
MilkTea::LSP::Workspace
Defined in:
lib/milk_tea/lsp/workspace/caches.rb

Instance Method Summary collapse

Instance Method Details

#all_documents ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 134

def all_documents
  @document_state_mutex.synchronize do
    (@indexed_documents.keys + @open_documents.keys).uniq
  end
end

#doc_comment_data_for_definition(uri, token) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 122

def doc_comment_data_for_definition(uri, token)
  return nil unless token

  docs_by_location = @doc_comments_cache[uri] ||= extract_doc_comments_for_definitions(uri)
  docs_by_location[doc_comment_key(token.line, token.column)]
end

#doc_comment_for_definition(uri, token) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 116

def doc_comment_for_definition(uri, token)
  return nil unless token

  doc_comment_data_for_definition(uri, token)&.fetch(:raw_markdown, nil)
end

#find_all_references(name) ⇒ Object

Return all identifier token locations matching name across all known documents. Uses the identifier index for known documents, falling back to scanning.



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 146

def find_all_references(name)
  refs = []
  indexed_entries = @identifier_index_mutex.synchronize { @identifier_index[name]&.dup }
  if indexed_entries
    indexed_entries.each do |entry|
      refs << {
        uri: entry[:uri],
        range: {
          start: { line: entry[:line] - 1, character: entry[:col] - 1 },
          end:   { line: entry[:line] - 1, character: entry[:col] - 1 + name.length },
        },
      }
    end
  end

  unindexed = all_documents.reject { |uri| @indexed_uris.include?(uri) }
  unless unindexed.empty?
    refs.concat(scan_for_references(name, unindexed))
  end
  refs
end

#find_all_references_in(name, uris) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 168

def find_all_references_in(name, uris)
  refs = []
  uriset = uris.to_set
  indexed_entries = @identifier_index_mutex.synchronize { @identifier_index[name]&.dup }
  if indexed_entries
    indexed_entries.each do |entry|
      next unless uriset.include?(entry[:uri])

      refs << {
        uri: entry[:uri],
        range: {
          start: { line: entry[:line] - 1, character: entry[:col] - 1 },
          end:   { line: entry[:line] - 1, character: entry[:col] - 1 + name.length },
        },
      }
    end
  end

  unindexed = uris.reject { |uri| @indexed_uris.include?(uri) }
  unless unindexed.empty?
    refs.concat(scan_for_references(name, unindexed))
  end
  refs
end

#get_ast(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 25

def get_ast(uri)
  @ast_cache[uri] ||= parse_document(uri)
end

#get_content(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 7

def get_content(uri)
  @document_state_mutex.synchronize do
    @open_documents[uri] || @indexed_documents[uri] ||
      begin
        path = uri_to_path(uri)
        if path && File.file?(path)
          @indexed_documents[uri] = File.read(path)
        end
      rescue StandardError
        nil
      end || ''
  end
end

#get_facts(uri, allow_last_good_fallback: true) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 29

def get_facts(uri, allow_last_good_fallback: true)
  snapshot = get_tooling_snapshot(uri, allow_last_good_fallback:)
  snapshot&.facts
end

#get_symbols(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 112

def get_symbols(uri)
  @symbols_cache[uri] ||= extract_symbols_from_tokens(uri)
end

#get_tokens(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 21

def get_tokens(uri)
  @tokens_cache[uri] ||= lex_document(uri)
end

#get_tooling_snapshot(uri, allow_last_good_fallback: true) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 34

def get_tooling_snapshot(uri, allow_last_good_fallback: true)
  total_start = perf_logging? ? monotonic_time : nil
  cache_state = 'miss'
  lock_wait_ms = 0.0
  analyze_ms = 0.0
  snapshot = nil
  last_good_snapshot = nil
  generation = nil
  @facts_cache_mutex.synchronize do
    generation = @facts_generation[uri]
    cached = @tooling_snapshot_cache[uri]
    last_good_snapshot = @last_good_tooling_snapshot_cache[uri]
    if cached
      cache_state = 'hit'
      snapshot = cached
    end
  end
  return snapshot if snapshot

  compute_snapshot = lambda do
    @facts_cache_mutex.synchronize do
      generation = @facts_generation[uri]
      cached = @tooling_snapshot_cache[uri]
      if cached
        cache_state = 'hit'
        snapshot = cached
      end
    end

    unless snapshot
      analyze_start = total_start ? monotonic_time : nil
      snapshot = analyze_document(uri)
      analyze_ms = elapsed_ms(analyze_start) if analyze_start
      @facts_cache_mutex.synchronize do
        if @facts_generation[uri] == generation
          @tooling_snapshot_cache[uri] = snapshot if snapshot
          if snapshot&.facts
            @facts_cache[uri] = snapshot.facts
            @last_good_facts_cache[uri] = snapshot.facts
            @last_good_tooling_snapshot_cache[uri] = snapshot
          end
          update_dependency_index(uri, snapshot&.facts) if snapshot
        else
          cache_state = 'stale'
          snapshot = @tooling_snapshot_cache[uri] || @last_good_tooling_snapshot_cache[uri]
        end
      end
    end
  end

  lock_wait_start = total_start ? monotonic_time : nil
  if @facts_state_mutex.try_lock
    begin
      compute_snapshot.call
    ensure
      @facts_state_mutex.unlock
    end
  elsif allow_last_good_fallback && last_good_snapshot
    cache_state = 'last_good'
    snapshot = last_good_snapshot
  else
    @facts_state_mutex.synchronize do
      lock_wait_ms = elapsed_ms(lock_wait_start) if lock_wait_start
      compute_snapshot.call
    end
  end
  snapshot
ensure
  if total_start
    result_state = snapshot&.facts.nil? ? 'nil' : 'ok'
    log_perf_breakdown(
      'workspace/get_tooling_snapshot',
      elapsed_ms(total_start),
      "uri=#{uri} cache=#{cache_state} result=#{result_state} stages_ms=lock_wait:#{lock_wait_ms},analyze:#{analyze_ms}",
    )
  end
end

#index_identifier_tokens(uri, tokens) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 193

def index_identifier_tokens(uri, tokens)
  return unless tokens

  @identifier_index_mutex.synchronize do
    @indexed_uris << uri
    tokens.each do |tok|
      next unless tok.type == :identifier

      (@identifier_index[tok.lexeme] ||= []) << { uri: uri, line: tok.line, col: tok.column }
    end
  end
end

#module_name_for_uri(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 140

def module_name_for_uri(uri)
  @document_module_names[uri]
end

#position_to_offset(uri, line, char) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 129

def position_to_offset(uri, line, char)
  content = get_content(uri)
  line_char_to_offset(content, line, char)
end

#remove_identifier_index_entries(uri) ⇒ Object 



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# File 'lib/milk_tea/lsp/workspace/caches.rb', line 206

def remove_identifier_index_entries(uri)
  @identifier_index_mutex.synchronize do
    @indexed_uris.delete(uri)
    @identifier_index.each_value do |entries|
      entries.reject! { |entry| entry[:uri] == uri }
    end
    @identifier_index.delete_if { |_name, entries| entries.empty? }
  end
end