Syntax Error in TopicDataType.hpp When Generating SWIG Bindings for Fast DDS

[Jackie2chen]

Hello,

I am working with Fast DDS and attempting to generate Python bindings using SWIG version 4.2.1. However, I've run into a syntax error that seems to be related to the TopicDataType.hpp file.

Here's the error message I'm encountering:

TopicDataType.hpp:71: Error: Syntax error - possibly a missing semicolon (';')

fastcdr veriosn：2.0.0
fastrtps 2.12.0
swig 4.2.1

`find_package(SWIG REQUIRED)
include(${SWIG_USE_FILE})
if(${SWIG_VERSION} VERSION_GREATER_EQUAL 4)
list(APPEND CMAKE_SWIG_FLAGS "-doxygen")
endif()

if(UNIX AND NOT APPLE)
if (CMAKE_SIZEOF_VOID_P EQUAL 8)
list(APPEND CMAKE_SWIG_FLAGS "-DSWIGWORDSIZE64")
else()
list(APPEND CMAKE_SWIG_FLAGS "-DSWIGWORDSIZE32")
endif()
endif()
find_package(Python3 COMPONENTS Interpreter Development REQUIRED)
include_directories(${Python3_INCLUDE_DIRS})
list(APPEND CMAKE_SWIG_FLAGS "-DPY3")

指定IDL文件的位置

set(IDL_DIR "../idl")

指定生成的Python模块名称

set(MODULE_NAME "idl_python")

set(IDL_FILES
"${IDL_DIR}/unit_test.i"
"${IDL_DIR}/sim_time.i"
"${IDL_DIR}/basestructure.i"
"${IDL_DIR}/unit_testPubSubTypes.i"
"${IDL_DIR}/sim_timePubSubTypes.i"
"${IDL_DIR}/basestructurePubSubTypes.i"
)

set(CMAKE_CXX_STANDARD 17)
foreach(IDL_FILE ${IDL_FILES})
get_filename_component(MODULE_FILE_NAME ${IDL_FILE} NAME_WE)
set_source_files_properties(${IDL_FILE} PROPERTIES CPLUSPLUS ON
USE_TARGET_INCLUDE_DIRECTORIES TRUE)
swig_add_library(${MODULE_FILE_NAME}c
TYPE SHARED
LANGUAGE python
OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/" # 指定输出目录
SOURCES ${IDL_FILE})
swig_link_libraries(${MODULE_FILE_NAME}c ${Python3_LIBRARIES} fastrtps ${TARGET_NAME})

message(STATUS "Creating SWIG target: ${MODULE_FILE_NAME}c")
set_property(TARGET ${MODULE_FILE_NAME}c_swig_compilation PROPERTY SWIG_COMPILE_DEFINITIONS SWIGWORDSIZE64 CXX_STANDARD 11)
set_target_properties(${MODULE_FILE_NAME}c_swig_compilation PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/")

endforeach()`

[elianalf]

Hello, can you please provide all the necessary files to reproduce the error?

[Jackie2chen]

#ifndef KRIDER_IDL_INTERFACE_BASESTRUCTURE_BASESTRUCTURE
#define KRIDER_IDL_INTERFACE_BASESTRUCTURE_BASESTRUCTURE

module krider {
module basestructure{
struct BaseHeader {
// uint64 timestamp_us; //时间戳，以微秒为单位
uint64 timestamp_ms; //消息发送时间戳，以毫秒为单位
uint64 sync_timestamp_ms; //透传图像时间戳
uint64 recv_timestamp_ms; //接收到上游消息时间戳，ms
boolean repeated_topic_flag; //"0为非重复帧；1为重复帧"
uint64 datacall_timestamp_ms; //模块读取消息队列的时间
uint64 frame_id; //消息frame id
boolean is_slice; //Is this message sliced? Default is false
uint32 slice_total_size; //The total parts of the sliced message
uint32 slice_index; //The index of this message in sliced messge
};
};
};

#endif // KRIDER_IDL_INTERFACE_BASESTRUCTURE_BASESTRUCTURE
idl files like this
other files are not necessary
${TARGET_NAME} in cmake just like ${PROJECT_NAME} in Fast-DDS-python/fastdds_python_examples/HelloWorldExample/CMakeLists.txt
which is library for C++ types