parseUnit(void)
  skipErrorTokens(void)
  listener: beginCompilationUnit(void)
  syntheticPreviousToken(void)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl()
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(, null, null, , Instance of 'VoidType', null, foo, false)
        listener: beginTopLevelMethod(, null, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(foo, topLevelFunctionDeclaration)
        parseMethodTypeVar(foo)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(foo, foo, false, MemberKind.TopLevelMethod)
          parseFormalParameters(foo, 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(}, var)
          parseStatement({)
            parseStatementX({)
              parseExpressionStatementOrDeclarationAfterModifiers(var, {, null, var, null, false)
                looksLikeLocalFunction(record)
                listener: beginMetadataStar(var)
                listener: endMetadataStar(0)
                listener: handleNoType(var)
                listener: beginVariablesDeclaration(record, null, var)
                parseVariablesDeclarationRest(var, true)
                  parseOptionallyInitializedIdentifier(var)
                    ensureIdentifier(var, localVariableDeclaration)
                      listener: handleIdentifier(record, localVariableDeclaration)
                    listener: beginInitializedIdentifier(record)
                    parseVariableInitializerOpt(record)
                      listener: beginVariableInitializer(=)
                      parseExpression(=)
                        parsePrecedenceExpression(=, 1, true)
                          parseUnaryExpression(=, true)
                            parsePrimary(=, expression)
                              parseParenthesizedExpressionFunctionLiteralOrRecordLiteral(=)
                                parseParenthesizedExpressionOrRecordLiteral(=)
                                  listener: beginParenthesizedExpressionOrRecordLiteral(()
                                  parseExpression(()
                                    parsePrecedenceExpression((, 1, true)
                                      parseUnaryExpression((, true)
                                        parsePrimary((, expression)
                                          parseLiteralInt(()
                                            listener: handleLiteralInt(1)
                                  parseExpression(,)
                                    parsePrecedenceExpression(,, 1, true)
                                      parseUnaryExpression(,, true)
                                        parsePrimary(,, expression)
                                          parseLiteralInt(,)
                                            listener: handleLiteralInt(2)
                                  ensureIdentifier(,, namedRecordFieldReference)
                                    listener: handleIdentifier(a, namedRecordFieldReference)
                                  parseExpression(:)
                                    parsePrecedenceExpression(:, 1, true)
                                      parseUnaryExpression(:, true)
                                        parsePrimary(:, expression)
                                          parseLiteralInt(:)
                                            listener: handleLiteralInt(3)
                                  listener: handleNamedRecordField(:)
                                  ensureIdentifier(,, namedRecordFieldReference)
                                    listener: handleIdentifier(b, namedRecordFieldReference)
                                  parseExpression(:)
                                    parsePrecedenceExpression(:, 1, true)
                                      parseUnaryExpression(:, true)
                                        parsePrimary(:, expression)
                                          parseLiteralInt(:)
                                            listener: handleLiteralInt(4)
                                  listener: handleNamedRecordField(:)
                                  ensureCloseParen(4, ()
                                  listener: endRecordLiteral((, 4)
                      listener: endVariableInitializer(=)
                    listener: endInitializedIdentifier(record)
                  ensureSemicolon())
                  listener: endVariablesDeclaration(1, ;)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(1, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(void)
  listener: endCompilationUnit(1, )