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Support address().codehash

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This commit is contained in:
Alex Beregszaszi
2020-12-09 14:58:27 +00:00
parent fca8026250
commit ad6739d0f6
12 changed files with 83 additions and 4 deletions
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docs/cheatsheet.rst
+2 -1
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@@ -67,7 +67,7 @@ The following is the order of precedence for operators, listed in order of evalu
| *15* | Comma operator | ``,`` |
+------------+-------------------------------------+--------------------------------------------+
.. index:: assert, block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, gas price, origin, revert, require, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, send
.. index:: assert, block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, gas price, origin, revert, require, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, codehash, send
Global Variables
================
@@ -114,6 +114,7 @@ Global Variables
- ``super``: the contract one level higher in the inheritance hierarchy
- ``selfdestruct(address payable recipient)``: destroy the current contract, sending its funds to the given address
- ``<address>.balance`` (``uint256``): balance of the :ref:`address` in Wei
- ``<address>.codehash`` (``bytes32``): the codehash of the :ref:`address`
- ``<address payable>.send(uint256 amount) returns (bool)``: send given amount of Wei to :ref:`address`,
returns ``false`` on failure
- ``<address payable>.transfer(uint256 amount)``: send given amount of Wei to :ref:`address`, throws on failure
docs/units-and-global-variables.rst
+4 -1
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@@ -211,7 +211,7 @@ Mathematical and Cryptographic Functions
When running ``sha256``, ``ripemd160`` or ``ecrecover`` on a *private blockchain*, you might encounter Out-of-Gas. This is because these functions are implemented as "precompiled contracts" and only really exist after they receive the first message (although their contract code is hardcoded). Messages to non-existing contracts are more expensive and thus the execution might run into an Out-of-Gas error. A workaround for this problem is to first send Wei (1 for example) to each of the contracts before you use them in your actual contracts. This is not an issue on the main or test net.
.. index:: balance, send, transfer, call, callcode, delegatecall, staticcall
.. index:: balance, codehash, send, transfer, call, callcode, delegatecall, staticcall
.. _address_related:
@@ -221,6 +221,9 @@ Members of Address Types
``<address>.balance`` (``uint256``)
balance of the :ref:`address` in Wei
``<address>.codehash`` (``bytes32``)
the codehash of the :ref:`address`
``<address payable>.transfer(uint256 amount)``
send given amount of Wei to :ref:`address`, reverts on failure, forwards 2300 gas stipend, not adjustable