[LLDB] Update SBMemoryRegionInfo doc strings to document len and str

[barsolo2000]

Updated SBMemoryRegionInfo doc strings:

• Added detailed documentation for the GetDescription() method.
• Included information about the overwritten len() and str() functions for the SBMemoryRegionInfo type, explaining their behavior and usage.

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[llvmbot]

@llvm/pr-subscribers-lldb

Author: None (barsolo2000)

Changes

Updated SBMemoryRegionInfo doc strings:

• Added detailed documentation for the GetDescription() method.
• Included information about the overwritten len() and str() functions for the SBMemoryRegionInfo type, explaining their behavior and usage.

---

Full diff: https://github.com/llvm/llvm-project/pull/149903.diff

1 Files Affected:

• (modified) lldb/bindings/interface/SBMemoryRegionInfoDocstrings.i (+36-20)

diff --git a/lldb/bindings/interface/SBMemoryRegionInfoDocstrings.i b/lldb/bindings/interface/SBMemoryRegionInfoDocstrings.i
index d7c68baf100e2..6b7f4a32ed17e 100644
--- a/lldb/bindings/interface/SBMemoryRegionInfoDocstrings.i
+++ b/lldb/bindings/interface/SBMemoryRegionInfoDocstrings.i
@@ -1,31 +1,47 @@
-%feature("docstring",
-"API clients can get information about memory regions in processes."
-) lldb::SBMemoryRegionInfo;
+% feature("docstring",
+          "API clients can get information about memory regions in processes.
+
+          When printed using str(), the memory region info is formatted as:
+                '[Hex start - Hex End] RWX' ")
+        lldb::SBMemoryRegionInfo;
 
 %feature("docstring", "
         Returns whether this memory region has a list of modified (dirty)
         pages available or not.  When calling GetNumDirtyPages(), you will
-        have 0 returned for both \"dirty page list is not known\" and 
+        have 0 returned for both \"dirty page list is not known\" and
         \"empty dirty page list\" (that is, no modified pages in this
         memory region).  You must use this method to disambiguate."
 ) lldb::SBMemoryRegionInfo::HasDirtyMemoryPageList;
 
-%feature("docstring", "
-        Return the number of dirty (modified) memory pages in this
-        memory region, if available.  You must use the 
-        SBMemoryRegionInfo::HasDirtyMemoryPageList() method to
-        determine if a dirty memory list is available; it will depend
-        on the target system can provide this information."
-) lldb::SBMemoryRegionInfo::GetNumDirtyPages;
+% feature(
+      "docstring",
+      "
+      Return the number of dirty(modified) memory pages in this memory region,
+      if available.You must use the SBMemoryRegionInfo::HasDirtyMemoryPageList()
+          method to determine if a dirty memory list is available;
+      it will depend on the target system can provide this information."
+      ) lldb::SBMemoryRegionInfo::GetNumDirtyPages;
 
-%feature("docstring", "
-        Return the address of a modified, or dirty, page of memory.
-        If the provided index is out of range, or this memory region 
-        does not have dirty page information, LLDB_INVALID_ADDRESS 
-        is returned."
-) lldb::SBMemoryRegionInfo::GetDirtyPageAddressAtIndex;
+% feature("docstring",
+          "
+          Return the address of a modified,
+          or dirty, page of memory.If the provided index is out of range,
+          or this memory region does not have dirty page information,
+          LLDB_INVALID_ADDRESS is returned."
+          ) lldb::SBMemoryRegionInfo::GetDirtyPageAddressAtIndex;
+
+% feature("docstring", "
+                       Return the size of pages in this memory region .0 will be
+                           returned if this information was unavailable."
+          ) lldb::SBMemoryRegionInfo::GetPageSize();
 
 %feature("docstring", "
-        Return the size of pages in this memory region.  0 will be returned
-        if this information was unavailable."
-) lldb::SBMemoryRegionInfo::GetPageSize();
+        takes a SBStream parameter 'description' where it will write the output to.
+        The function will formats the memory region information into a string with Memory region info
+        [Hex start - Hex End) and premission flags R/W/X.
+        Returns a boolean value indicating success or failure.
+
+        alternatively, to get the size of the memory region is to use
+        the len() function on the SBMemoryRegionInfo object.
+        The function function will return the size of the memory region"
+) lldb::SBMemoryRegionInfo::GetDescription;

[JDevlieghere]

Now that we include Doxygen comments in the docstring (#147617), should we move these into the C++ header?

[Jlalond]

@JDevlieghere How would we go about documenting some of the python methods len() and str() in doxygen? Asking for myself if you have an example

[JDevlieghere]

@JDevlieghere How would we go about documenting some of the python methods len() and str() in doxygen? Asking for myself if you have an example

Since those are Python specific they should remain docstrings in the .i interface files. I expect the latter to stick around, for that reason or when we have comments that are more tailored towards Python. But generic comments should go in the headers as Doxygen comments so both C++ and Python users can benefit from them. Unfortunately there's also no automatic way to convert them to Lua documentation, but maybe that'll come in a future version of SWIG.