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specs/simple-serialize.md
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@ -54,7 +54,7 @@ For convenience we alias:
We recursively define the `serialize` function which consumes an object `value` (of the type specified) and returns a bytestring of type `"bytes"`. We recursively define the `serialize` function which consumes an object `value` (of the type specified) and returns a bytestring of type `"bytes"`.
> *Note*: In the function definitions below (`serialize`, `hash_tree_root`, `signed_root`, etc.) objects implicitly carry their type. > *Note*: In the function definitions below (`serialize`, `hash_tree_root`, `signed_root`, `is_fixed_size`, `is_variable_size` etc.) objects implicitly carry their type.
### Basic Types ### Basic Types
@ -83,17 +83,19 @@ return b"\x01" if value is True else b"\x00"
The serialized representation of composite types is comprised of two binary sections. The serialized representation of composite types is comprised of two binary sections.
* The first section is *fixed size* for all types, containing the concatenation of *either* * The first section is *fixed size* for all types, containing the concatenation of
- The serialized representation for each of the *fixed size* elements of value - The serialized representation for each of the *fixed size* elements from the value
- The `"uint32"` serialized offset where the serialized representation of the *variable sized* type is located in the second section relative to the beginning of the first section. - The `"uint32"` serialized offset where the serialized representation of the *variable sized* elements from the value are located in the second section.
* The second section contains the concatenation of the serialized representations of **only** the *variable size* types. * The second section contains the concatenation of the serialized representations of **only** the *variable size* types.
- This section is empty in the case of a purely *fixed size* type. - This section is empty in the case of a purely *fixed size* type.
> **NOTE**: Offsets are relative to the beginning of the beginning of the entire serialized representation (the start of the first section)
#### `"vector"`, `"container"` and `"list"` #### `"vector"`, `"container"` and `"list"`
An implementation of the `serialize` function for `"Vector"`, `"Container"` and Below is an illustrative implementation of the `serialize` function for `"Vector"`,
`"List"` types would take the following form. `"Container"` and `"List"` types.
```python ```python
# The second section is just the concatenation of the serialized *variable size* elements # The second section is just the concatenation of the serialized *variable size* elements