parseUnit(f)
  skipErrorTokens(f)
  listener: beginCompilationUnit(f)
  syntheticPreviousToken(f)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(f)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl()
      listener: beginTopLevelMember(f)
      isReservedKeyword(()
      parseTopLevelMethod(, null, , Instance of 'NoType', null, f, false)
        listener: beginTopLevelMethod(, null)
        listener: handleNoType()
        ensureIdentifierPotentiallyRecovered(, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(f, topLevelFunctionDeclaration)
        parseMethodTypeVar(f)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(f, f, false, MemberKind.TopLevelMethod)
          parseFormalParameters(f, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              listener: endFormalParameters(0, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, foo)
          parseStatement({)
            parseStatementX({)
              parseExpressionStatementOrDeclarationAfterModifiers({, {, null, null, null, false)
                looksLikeLocalFunction(foo)
                parseExpressionStatement({)
                  parseExpression({)
                    parsePrecedenceExpression({, 1, true)
                      parseUnaryExpression({, true)
                        parsePrimary({, expression)
                          parseSendOrFunctionLiteral({, expression)
                            parseSend({, expression)
                              isNextIdentifier({)
                              ensureIdentifier({, expression)
                                listener: handleIdentifier(foo, expression)
                              listener: handleNoTypeArguments(.)
                              parseArgumentsOpt(foo)
                                listener: handleNoArguments(.)
                              listener: handleSend(foo, .)
                      parsePrimary(., expressionContinuation)
                        parseSendOrFunctionLiteral(., expressionContinuation)
                          parseSend(., expressionContinuation)
                            isNextIdentifier(.)
                            ensureIdentifier(., expressionContinuation)
                              listener: handleIdentifier(bar, expressionContinuation)
                            listener: handleNoTypeArguments(!)
                            parseArgumentsOpt(bar)
                              listener: handleNoArguments(!)
                            listener: handleSend(bar, !)
                      listener: handleEndingBinaryExpression(.)
                      listener: handleNonNullAssertExpression(!)
                      parseArgumentOrIndexStar(!, Instance of 'NoTypeParamOrArg', false)
                        parseExpression([)
                          parsePrecedenceExpression([, 1, true)
                            parseUnaryExpression([, true)
                              parsePrimary([, expression)
                                parseSendOrFunctionLiteral([, expression)
                                  parseSend([, expression)
                                    isNextIdentifier([)
                                    ensureIdentifier([, expression)
                                      listener: handleIdentifier(arg, expression)
                                    listener: handleNoTypeArguments(])
                                    parseArgumentsOpt(arg)
                                      listener: handleNoArguments(])
                                    listener: handleSend(arg, ])
                        listener: handleIndexedExpression(null, [, ])
                  ensureSemicolon(])
                  listener: handleExpressionStatement(;)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(1, {, })
        listener: endTopLevelMethod(f, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(f)
  listener: endCompilationUnit(1, )