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Document new argument to setimmutable.

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Daniel Kirchner 2020-10-15 16:40:45 +02:00
parent 26cc6b7a95
commit 65dd463fd2
1 changed files with 5 additions and 5 deletions
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docs/yul.rst
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@ -920,12 +920,12 @@ For the EVM, the ``datacopy`` function is equivalent to ``codecopy``.
setimmutable, loadimmutable
^^^^^^^^^^^^^^^^^^^^^^^^^^^
The functions ``setimmutable("name", value)`` and ``loadimmutable("name")`` are
The functions ``setimmutable(offset, "name", value)`` and ``loadimmutable("name")`` are
used for the immutable mechanism in Solidity and do not nicely map to pure Yul.
The function ``setimmutable`` assumes that the runtime code of a contract
is currently copied to memory at offset zero. The call to ``setimmutable("name", value)``
will store ``value`` at all points in memory that contain a call to
``loadimmutable("name")``.
The call to ``setimmutable(offset, "name", value)`` assumes that the runtime code of the contract
containing the given named immutable was copied to memory at offset ``offset`` and will write ``value`` to all
positions in memory (relative to ``offset``) that contain the placeholder that was generated for calls
to ``loadimmutable("name")`` in the runtime code.
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