cerc-io/solidity
16
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Update metadata.rst

Browse Source
This commit is contained in:
Ayrat Badykov 2019-08-19 14:24:56 +03:00 committed by GitHub
parent a39d26f366
commit e0507b5a8c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
docs/metadata.rst
View File

@ -124,7 +124,7 @@ Encoding of the Metadata Hash in the Bytecode
============================================= =============================================
Because we might support other ways to retrieve the metadata file in the future, Because we might support other ways to retrieve the metadata file in the future,
the mapping ``{"bzzr0": <Swarm hash>, "solc": <compiler version>}`` is stored the mapping ``{"bzzr1": <Swarm hash>, "solc": <compiler version>}`` is stored
`CBOR <https://tools.ietf.org/html/rfc7049>`_-encoded. Since the mapping might `CBOR <https://tools.ietf.org/html/rfc7049>`_-encoded. Since the mapping might
contain more keys (see below) and the beginning of that contain more keys (see below) and the beginning of that
encoding is not easy to find, its length is added in a two-byte big-endian encoding is not easy to find, its length is added in a two-byte big-endian
@ -132,7 +132,7 @@ encoding. The current version of the Solidity compiler usually adds the followin
to the end of the deployed bytecode:: to the end of the deployed bytecode::
0xa2 0xa2
0x65 'b' 'z' 'z' 'r' '0' 0x58 0x20 <32 bytes swarm hash> 0x65 'b' 'z' 'z' 'r' '1' 0x58 0x20 <32 bytes swarm hash>
0x64 's' 'o' 'l' 'c' 0x43 <3 byte version encoding> 0x64 's' 'o' 'l' 'c' 0x43 <3 byte version encoding>
0x00 0x32 0x00 0x32
@ -150,9 +150,9 @@ will instead use a complete version string including commit hash and build date.
are used, the mapping will also contain ``"experimental": true``. are used, the mapping will also contain ``"experimental": true``.
.. note:: .. note::
The compiler currently uses the "swarm version 0" hash of the metadata, The compiler currently uses the "swarm version 1" hash of the metadata,
but this might change in the future, so do not rely on this sequence but this might change in the future, so do not rely on this sequence
to start with ``0xa2 0x65 'b' 'z' 'z' 'r' '0'``. We might also to start with ``0xa2 0x65 'b' 'z' 'z' 'r' '1'``. We might also
add additional data to this CBOR structure, so the add additional data to this CBOR structure, so the
best option is to use a proper CBOR parser. best option is to use a proper CBOR parser.