PragmaTwice commented on code in PR #1413:
URL: https://github.com/apache/incubator-fury/pull/1413#discussion_r1536804961
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docs/protocols/xlang_object_graph_spec.md:
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@@ -0,0 +1,612 @@
+# Cross language object graph serialization
+
+Fury xlang serialization is an automatic object serialization framework that
supports reference and polymorphism.
+Fury will convert an object from/to fury xlang serialization binary format.
+Fury has two core concepts for xlang serialization:
+
+- **Fury xlang binary format**
+- **Framework implemented in different languages to convert object to/from
Fury xlang binary format**
+
+The serialization format is a dynamic binary format. The dynamics and
reference/polymorphism support make Fury flexible,
+much more easy to use, but
+also introduce more complexities compared to static serialization frameworks.
So the format will be more complex.
+
+## Type Systems
+
+### Data Types
+
+- bool: A boolean value (true or false).
+- byte: An 8-bit signed integer.
+- i16: A 16-bit signed integer.
+- i32: A 32-bit signed integer.
+- i64: A 64-bit signed integer.
+- half-float: A 16-bit floating point number.
+- float: A 32-bit floating point number.
+- double: A 64-bit floating point number including NaN and Infinity.
+- string: A text string encoded using Latin1/UTF16/UTF-8 encoding.
+- enum: a data type consisting of a set of named values. Rust enum with
non-predefined field values are not supported as
+ an enum
+- list: A sequence of objects.
+- set: An unordered set of unique elements.
+- map: A map of key-value pairs.
+- time types:
+ - Duration: an absolute length of time independent of any
calendar/timezone, as a count of seconds and
Review Comment:
```suggestion
- Duration: an absolute length of time, independent of any
calendar/timezone, as a count of seconds and
```
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