mirror of
https://github.com/ethereum/go-ethereum.git
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29166f0fc8
## Why this should be merged the `pseudo` package should not be used outside of libevm. Moving it to internal enforces this. ## How this was tested CI
56 lines
1.7 KiB
Go
56 lines
1.7 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 pseudo
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import (
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"fmt"
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)
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var _ = []fmt.Formatter{
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(*Type)(nil),
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(*Value[struct{}])(nil),
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(*concrete[struct{}])(nil),
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}
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// Format implements the [fmt.Formatter] interface.
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func (t *Type) Format(s fmt.State, verb rune) {
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switch {
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case t == nil, t.val == nil:
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writeToFmtState(s, "<nil>[pseudo.Type[unknown]]")
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default:
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t.val.Format(s, verb)
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}
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}
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// Format implements the [fmt.Formatter] interface.
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func (v *Value[T]) Format(s fmt.State, verb rune) { v.t.Format(s, verb) }
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func (c *concrete[T]) Format(s fmt.State, verb rune) {
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switch {
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case c == nil:
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writeToFmtState(s, "<nil>[pseudo.Type[%T]]", concrete[T]{}.val)
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default:
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// Respects the original formatting directive. fmt all the way down!
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format := fmt.Sprintf("pseudo.Type[%%T]{%s}", fmt.FormatString(s, verb))
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writeToFmtState(s, format, c.val, c.val)
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}
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}
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func writeToFmtState(s fmt.State, format string, a ...any) {
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// There is no way to bubble errors out from a `fmt.Formatter`.
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_, _ = s.Write([]byte(fmt.Sprintf(format, a...)))
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}
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