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44068c8bab
## Why this should be merged Simplifies the creation and application of variadic options; this is also applicable to many of my other WIP branches (e.g. `snapshot`). ## How this works See `libevm/options/options.go`, which is very simple. ## How this was tested Existing tests of `vm.PrecompileEnvironment.Call()`, which itself uses refactored options.
39 lines
1.5 KiB
Go
39 lines
1.5 KiB
Go
// Copyright 2024 the libevm authors.
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//
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// The libevm additions to go-ethereum are free software: you can redistribute
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// them and/or modify them under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation, either version 3 of the License,
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// or (at your option) any later version.
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//
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// The libevm additions are distributed in the hope that they will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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// General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see
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// <http://www.gnu.org/licenses/>.
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package vm
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import "github.com/ava-labs/libevm/libevm/options"
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type callConfig struct {
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unsafeCallerAddressProxying bool
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}
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// A CallOption modifies the default behaviour of a contract call.
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type CallOption = options.Option[callConfig]
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// WithUNSAFECallerAddressProxying results in precompiles making contract calls
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// specifying their own caller's address as the caller. This is NOT SAFE for
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// regular use as callers of the precompile may not understand that they are
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// escalating the precompile's privileges.
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//
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// Deprecated: this option MUST NOT be used other than to allow migration to
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// libevm when backwards compatibility is required.
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func WithUNSAFECallerAddressProxying() CallOption {
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return options.Func[callConfig](func(c *callConfig) {
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c.unsafeCallerAddressProxying = true
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})
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}
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