I generated cpp files from DDS_Data.idl file . and error occured. it's report imformation likes below. please give me a help!

[senses1]

/home/people/Fast-DDS-Gen-master/scripts# ./fastddsgen ./DDS_Data.idl
openjdk version "19.0.2" 2023-01-17
OpenJDK Runtime Environment (build 19.0.2+7-Ubuntu-0ubuntu322.04)
OpenJDK 64-Bit Server VM (build 19.0.2+7-Ubuntu-0ubuntu322.04, mixed mode, sharing)
Processing the file DDS_Data.idl...
ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

[JesusPoderoso]

Hi @senses1, thanks for your report.
Which Fast DDS-Gen version are you using?
And which Linux distribution?
Could you share the .idl file content?
Thanks!

[senses1]

openjdk version "19.0.2" 2023-01-17
OpenJDK Runtime Environment (build 19.0.2+7-Ubuntu-0ubuntu322.04)
OpenJDK 64-Bit Server VM (build 19.0.2+7-Ubuntu-0ubuntu322.04, mixed mode, sharing)
fastddsgen version 4.0.0

IDL content is below:
`// 激光雷达数据
struct LaserData
{
sequence ranges;
sequence intensity;
unsigned long long time_stamp;
};

//机器人位姿
struct RobotPose
{
float pose_x;
float pose_y;
float pose_theta;
};

//机器人轮速
struct WheelSpeed
{
unsigned long speed_l;
unsigned long speed_r;
};

//机器人速度
struct Velocity
{
// 线速度
float v;
// 角速度
float w;
};

//机器人码盘值
struct Encoder
{
// 左
unsigned long enc_l;
// 右
unsigned long enc_r;
};

// 车体参数
struct RobotParams
{
//使用地图id
unsigned long map_id;
//机器人位姿
RobotPose pose;
//机器人轮速
WheelSpeed robot_speed;
//激光避停状态
boolean laser_blocking;
//电池充电次数
unsigned long charge_cycles;
//车体工作时长
unsigned long working_time;
//车体当前运行模式 ,auto/manual
unsigned long moving_status;
};`

[senses1]

addtionally
1 I removed all comments .
2 I removed all comments and left only one struct of any one .
it sttill report this information.

[JesusPoderoso]

Hi @senses1, I could not reproduce your issue, but your idl is malformed.
Mind that the sequence needs to be followed by the data type (check the sequence section of Fast DDS-Gen documentation).
Once that is addressed, the code should be generated successfully.

[senses1]

thanks @JesusPoderoso ，but I make the idl simple like:
struct RobotPose
{
float pose_x;
float pose_y;
float pose_theta;
};
it still report error:
root@DESKTOP-A2ICLLO:/home/tby/Fast-DDS-Gen-master/scripts# ./fastddsgen ./DDS_Data.idl
openjdk version "19.0.2" 2023-01-17
OpenJDK Runtime Environment (build 19.0.2+7-Ubuntu-0ubuntu322.04)
OpenJDK 64-Bit Server VM (build 19.0.2+7-Ubuntu-0ubuntu322.04, mixed mode, sharing)
Processing the file DDS_Data.idl...
ERROR: context [/struct_type /extensibility] 1:5 no such property or can't access: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: com.eprosima.fastdds.idl.parser.typecode.StructTypeCode.annotationExtensibilityNotApplied
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:163)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:87)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1222)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:216)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:755)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:687)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:291)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:151)
at org.stringtemplate.v4.ST.write(ST.java:432)
at com.eprosima.idl.generator.manager.TemplateGroup.setAttribute(TemplateGroup.java:100)
at com.eprosima.idl.parser.grammar.IDLParser.specification(IDLParser.java:352)
at com.eprosima.fastdds.fastddsgen.parseIDL(fastddsgen.java:867)
at com.eprosima.fastdds.fastddsgen.process(fastddsgen.java:697)
at com.eprosima.fastdds.fastddsgen.execute(fastddsgen.java:466)
at com.eprosima.fastdds.fastddsgen.main(fastddsgen.java:1641)

[senses1]

I move back to 2.2.1 ，it does not show this error infomation .

[JesusPoderoso]

Hi @senses1,
have you tried to include the extensibility in your idl?

[senses1]

Thanks for reply @JesusPoderoso , I had to heading to lcm lib at that time, and I would replace lcm with fastDDS when it work properly in my system.