Module: MilkTea::LSP::Server::ServerCallHierarchy

Included in:
MilkTea::LSP::Server
Defined in:
lib/milk_tea/lsp/server/call_hierarchy.rb

Instance Method Summary collapse

Instance Method Details

#handle_incoming_calls(params) ⇒ Object 



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# File 'lib/milk_tea/lsp/server/call_hierarchy.rb', line 48

def handle_incoming_calls(params)
  item = params["item"] || params[:item]
  data = item["data"] || item[:data]
  return [] unless data.is_a?(Hash) || data.respond_to?(:[])

  target_name = data["name"] || data[:name]
  return [] if target_name.to_s.empty?

  target_uri = data["uri"] || data[:uri]
  candidate_uris = nil
  if target_uri
    target_facts = @workspace.get_facts(target_uri)
    if target_facts&.module_name
      importing = @workspace.reverse_import_dependents_for(target_facts.module_name)
      if importing && !importing.empty?
        candidate_uris = importing.to_a + [target_uri]
      end
    end
  end

  refs = if candidate_uris
           @workspace.find_all_references_in(target_name, candidate_uris)
         else
           @workspace.find_all_references(target_name)
         end
  return [] if refs.empty?

  caller_map = {}
  refs.each do |ref|
    call_uri = ref[:uri]
    ref_line = ref[:range][:start][:line] + 1

    caller_func = find_enclosing_function(call_uri, ref_line)
    next unless caller_func
    next if caller_func[:name] == target_name && call_uri == data["uri"]

    key = [call_uri, caller_func[:name]]
    caller_map[key] ||= { uri: call_uri, name: caller_func[:name], ranges: [], kind: caller_func[:kind] }
    caller_map[key][:ranges] << ref[:range]
  end

  caller_map.map do |_, caller|
    {
      from: {
        name: caller[:name],
        kind: caller[:kind],
        uri: caller[:uri],
        range: caller[:ranges].first,
        selectionRange: caller[:ranges].first,
        data: { name: caller[:name], uri: caller[:uri], kind: caller[:kind] },
      },
      fromRanges: caller[:ranges],
    }
  end
end

#handle_outgoing_calls(params) ⇒ Object 



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# File 'lib/milk_tea/lsp/server/call_hierarchy.rb', line 104

def handle_outgoing_calls(params)
  item = params["item"] || params[:item]
  data = item["data"] || item[:data]
  return [] unless data.is_a?(Hash) || data.respond_to?(:[])

  target_name = data["name"] || data[:name]
  target_uri = data["uri"] || data[:uri]
  return [] if target_name.to_s.empty?

  facts = @workspace.get_facts(target_uri)
  return [] unless facts

  func_binding = facts.functions[target_name]
  unless func_binding
    facts.methods&.each_value do |method_map|
      func_binding = method_map[target_name]
      break if func_binding
    end
  end
  return [] unless func_binding
  return [] unless func_binding.ast.respond_to?(:body)

  callees = collect_call_callees(func_binding.ast.body, facts)
  return [] if callees.empty?

  result = []
  callees.each do |callee_name, ranges|
    def_entry = @workspace.find_definition_token_global(callee_name, preferred_uri: target_uri)
    def_uri = def_entry ? def_entry[:uri].to_s : target_uri
    def_range = def_entry ? token_range(def_entry[:token]) : ranges.first

    result << {
      to: {
        name: callee_name,
        kind: 12,
        uri: def_uri,
        range: def_range,
        selectionRange: def_range,
        data: { name: callee_name, uri: def_uri, kind: 12 },
      },
      fromRanges: ranges,
    }
  end

  result.take(50)
end

#handle_prepare_call_hierarchy(params) ⇒ Object 



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# File 'lib/milk_tea/lsp/server/call_hierarchy.rb', line 7

def handle_prepare_call_hierarchy(params)
  text_document = params["textDocument"]
  position = params["position"]
  uri = text_document["uri"]
  lsp_line = position["line"]
  lsp_char = position["character"]

  facts = @workspace.get_facts(uri)
  return nil unless facts

  token = @workspace.find_token_at(uri, lsp_line, lsp_char)
  return nil unless token
  return nil unless token.type == :identifier

  func_name = token.lexeme

  func_binding = facts.functions[func_name]
  if func_binding
    return [build_call_hierarchy_item(func_name, uri, func_binding, facts)]
  end

  dot_recv = @workspace.find_dot_receiver(uri, lsp_line, lsp_char)
  if dot_recv
    if (module_binding = facts.imports[dot_recv])
      if module_binding.functions.key?(func_name)
        return [build_call_hierarchy_item(func_name, uri, module_binding.functions[func_name], facts)]
      end
    end
  end

  if facts.methods
    facts.methods.each_value do |method_map|
      if method_map.key?(func_name)
        return [build_call_hierarchy_item(func_name, uri, method_map[func_name], facts)]
      end
    end
  end

  nil
end