parseUnit(@)
  skipErrorTokens(@)
  listener: beginCompilationUnit(@)
  syntheticPreviousToken(@)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(@)
      parseMetadata()
        listener: beginMetadata(@)
        ensureIdentifier(@, metadataReference)
          listener: handleIdentifier(A, metadataReference)
        parseQualifiedRestOpt(A, metadataContinuation)
        listener: beginTypeArguments(<)
        listener: handleIdentifier(int, typeReference)
        listener: handleNoTypeArguments(>)
        listener: handleType(int, null)
        listener: endTypeArguments(1, <, >)
        parseArgumentsOpt(>)
          parseArguments(>)
            parseArgumentsRest(()
              listener: beginArguments(()
              parseExpression(()
                parsePrecedenceExpression((, 1, true)
                  parseUnaryExpression((, true)
                    parsePrimary((, expression)
                      parseLiteralInt(()
                        listener: handleLiteralInt(0)
              listener: endArguments(1, (, ))
        listener: endMetadata(@, null, typedef)
      listener: endMetadataStar(1)
    parseTopLevelKeywordDeclaration(), typedef, Instance of 'DirectiveContext')
      parseTopLevelKeywordModifiers(), typedef)
      parseTypedef(typedef)
        listener: beginUncategorizedTopLevelDeclaration(typedef)
        listener: beginFunctionTypeAlias(typedef)
        ensureIdentifierPotentiallyRecovered(typedef, typedefDeclaration, true)
          listener: handleIdentifier(F, typedefDeclaration)
        listener: beginTypeVariables(<)
        parseMetadataStar(<)
          listener: beginMetadataStar(@)
          parseMetadata(<)
            listener: beginMetadata(@)
            ensureIdentifier(@, metadataReference)
              listener: handleIdentifier(A, metadataReference)
            parseQualifiedRestOpt(A, metadataContinuation)
            listener: beginTypeArguments(<)
            listener: handleIdentifier(int, typeReference)
            listener: handleNoTypeArguments(>)
            listener: handleType(int, null)
            listener: endTypeArguments(1, <, >)
            parseArgumentsOpt(>)
              parseArguments(>)
                parseArgumentsRest(()
                  listener: beginArguments(()
                  parseExpression(()
                    parsePrecedenceExpression((, 1, true)
                      parseUnaryExpression((, true)
                        parsePrimary((, expression)
                          parseLiteralInt(()
                            listener: handleLiteralInt(0)
                  listener: endArguments(1, (, ))
            listener: endMetadata(@, null, T)
          listener: endMetadataStar(1)
        ensureIdentifier(), typeVariableDeclaration)
          listener: handleIdentifier(T, typeVariableDeclaration)
        listener: beginTypeVariable(T)
        listener: handleTypeVariablesDefined(T, 1)
        listener: handleNoType(T)
        listener: endTypeVariable(>, 0, null, null)
        listener: endTypeVariables(<, >)
        listener: beginFunctionType(int)
        listener: beginTypeVariables(<)
        parseMetadataStar(<)
          listener: beginMetadataStar(@)
          parseMetadata(<)
            listener: beginMetadata(@)
            ensureIdentifier(@, metadataReference)
              listener: handleIdentifier(A, metadataReference)
            parseQualifiedRestOpt(A, metadataContinuation)
            listener: beginTypeArguments(<)
            listener: handleIdentifier(int, typeReference)
            listener: handleNoTypeArguments(>)
            listener: handleType(int, null)
            listener: endTypeArguments(1, <, >)
            parseArgumentsOpt(>)
              parseArguments(>)
                parseArgumentsRest(()
                  listener: beginArguments(()
                  parseExpression(()
                    parsePrecedenceExpression((, 1, true)
                      parseUnaryExpression((, true)
                        parsePrimary((, expression)
                          parseLiteralInt(()
                            listener: handleLiteralInt(0)
                  listener: endArguments(1, (, ))
            listener: endMetadata(@, null, X)
          listener: endMetadataStar(1)
        ensureIdentifier(), typeVariableDeclaration)
          listener: handleIdentifier(X, typeVariableDeclaration)
        listener: beginTypeVariable(X)
        listener: handleTypeVariablesDefined(X, 1)
        listener: handleNoType(X)
        listener: endTypeVariable(>, 0, null, null)
        listener: endTypeVariables(<, >)
        ensureIdentifier(=, typeReference)
          listener: handleIdentifier(int, typeReference)
        listener: handleNoTypeArguments(Function)
        listener: handleType(int, null)
        parseFormalParametersRequiredOpt(>, MemberKind.GeneralizedFunctionType)
          parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
            listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
              parseMetadataStar(()
                listener: beginMetadataStar(@)
                parseMetadata(()
                  listener: beginMetadata(@)
                  ensureIdentifier(@, metadataReference)
                    listener: handleIdentifier(A, metadataReference)
                  parseQualifiedRestOpt(A, metadataContinuation)
                  listener: beginTypeArguments(<)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(>)
                  listener: handleType(int, null)
                  listener: endTypeArguments(1, <, >)
                  parseArgumentsOpt(>)
                    parseArguments(>)
                      parseArgumentsRest(()
                        listener: beginArguments(()
                        parseExpression(()
                          parsePrecedenceExpression((, 1, true)
                            parseUnaryExpression((, true)
                              parsePrimary((, expression)
                                parseLiteralInt(()
                                  listener: handleLiteralInt(0)
                        listener: endArguments(1, (, ))
                  listener: endMetadata(@, null, int)
                listener: endMetadataStar(1)
              listener: beginFormalParameter(int, MemberKind.GeneralizedFunctionType, null, null, null)
              listener: handleIdentifier(int, typeReference)
              listener: handleNoTypeArguments())
              listener: handleType(int, null)
              listener: handleNoName())
              listener: handleFormalParameterWithoutValue())
              listener: endFormalParameter(null, null, ), null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
            listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
        listener: endFunctionType(Function, null)
        ensureSemicolon())
        listener: endFunctionTypeAlias(typedef, =, ;)
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(;, Instance of 'DirectiveContext')
    parseMetadataStar(;)
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(;)
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(;, null, ;, Instance of 'VoidType', null, main, false)
        listener: beginTopLevelMethod(;, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(main, topLevelFunctionDeclaration)
        parseMethodTypeVar(main)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(main, main, false, MemberKind.TopLevelMethod)
          parseFormalParameters(main, 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(}, @)
          parseStatement({)
            parseStatementX({)
              parseExpressionStatementOrDeclaration({, false)
                parseMetadataStar({)
                  listener: beginMetadataStar(@)
                  parseMetadata({)
                    listener: beginMetadata(@)
                    ensureIdentifier(@, metadataReference)
                      listener: handleIdentifier(A, metadataReference)
                    parseQualifiedRestOpt(A, metadataContinuation)
                    listener: beginTypeArguments(<)
                    listener: handleIdentifier(int, typeReference)
                    listener: handleNoTypeArguments(>)
                    listener: handleType(int, null)
                    listener: endTypeArguments(1, <, >)
                    parseArgumentsOpt(>)
                      parseArguments(>)
                        parseArgumentsRest(()
                          listener: beginArguments(()
                          parseExpression(()
                            parsePrecedenceExpression((, 1, true)
                              parseUnaryExpression((, true)
                                parsePrimary((, expression)
                                  parseLiteralInt(()
                                    listener: handleLiteralInt(0)
                          listener: endArguments(1, (, ))
                    listener: endMetadata(@, null, void)
                  listener: endMetadataStar(1)
                parseExpressionStatementOrDeclarationAfterModifiers(), {, null, null, null, false)
                  looksLikeLocalFunction(f)
                  listener: beginFunctionType(void)
                  listener: beginTypeVariables(<)
                  parseMetadataStar(<)
                    listener: beginMetadataStar(@)
                    parseMetadata(<)
                      listener: beginMetadata(@)
                      ensureIdentifier(@, metadataReference)
                        listener: handleIdentifier(A, metadataReference)
                      parseQualifiedRestOpt(A, metadataContinuation)
                      listener: beginTypeArguments(<)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(>)
                      listener: handleType(int, null)
                      listener: endTypeArguments(1, <, >)
                      parseArgumentsOpt(>)
                        parseArguments(>)
                          parseArgumentsRest(()
                            listener: beginArguments(()
                            parseExpression(()
                              parsePrecedenceExpression((, 1, true)
                                parseUnaryExpression((, true)
                                  parsePrimary((, expression)
                                    parseLiteralInt(()
                                      listener: handleLiteralInt(0)
                            listener: endArguments(1, (, ))
                      listener: endMetadata(@, null, X)
                    listener: endMetadataStar(1)
                  ensureIdentifier(), typeVariableDeclaration)
                    listener: handleIdentifier(X, typeVariableDeclaration)
                  listener: beginTypeVariable(X)
                  listener: handleTypeVariablesDefined(X, 1)
                  listener: handleNoType(X)
                  listener: endTypeVariable(>, 0, null, null)
                  listener: endTypeVariables(<, >)
                  listener: handleVoidKeyword(void)
                  parseFormalParametersRequiredOpt(>, MemberKind.GeneralizedFunctionType)
                    parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
                      listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
                        parseMetadataStar(()
                          listener: beginMetadataStar(@)
                          parseMetadata(()
                            listener: beginMetadata(@)
                            ensureIdentifier(@, metadataReference)
                              listener: handleIdentifier(A, metadataReference)
                            parseQualifiedRestOpt(A, metadataContinuation)
                            listener: beginTypeArguments(<)
                            listener: handleIdentifier(int, typeReference)
                            listener: handleNoTypeArguments(>)
                            listener: handleType(int, null)
                            listener: endTypeArguments(1, <, >)
                            parseArgumentsOpt(>)
                              parseArguments(>)
                                parseArgumentsRest(()
                                  listener: beginArguments(()
                                  parseExpression(()
                                    parsePrecedenceExpression((, 1, true)
                                      parseUnaryExpression((, true)
                                        parsePrimary((, expression)
                                          parseLiteralInt(()
                                            listener: handleLiteralInt(0)
                                  listener: endArguments(1, (, ))
                            listener: endMetadata(@, null, int)
                          listener: endMetadataStar(1)
                        listener: beginFormalParameter(int, MemberKind.GeneralizedFunctionType, null, null, null)
                        listener: handleIdentifier(int, typeReference)
                        listener: handleNoTypeArguments(y)
                        listener: handleType(int, null)
                        ensureIdentifier(int, formalParameterDeclaration)
                          listener: handleIdentifier(y, formalParameterDeclaration)
                        listener: handleFormalParameterWithoutValue())
                        listener: endFormalParameter(null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
                      listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
                  listener: endFunctionType(Function, ?)
                  listener: beginVariablesDeclaration(f, null, null)
                  parseVariablesDeclarationRest(?, true)
                    parseOptionallyInitializedIdentifier(?)
                      ensureIdentifier(?, localVariableDeclaration)
                        listener: handleIdentifier(f, localVariableDeclaration)
                      listener: beginInitializedIdentifier(f)
                      parseVariableInitializerOpt(f)
                        listener: beginVariableInitializer(=)
                        parseExpression(=)
                          parsePrecedenceExpression(=, 1, true)
                            parseUnaryExpression(=, true)
                              parsePrimary(=, expression)
                                parseLiteralNull(=)
                                  listener: handleLiteralNull(null)
                        listener: endVariableInitializer(=)
                      listener: endInitializedIdentifier(f)
                    ensureSemicolon(null)
                    listener: endVariablesDeclaration(1, ;)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(1, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(@)
  listener: endCompilationUnit(2, )