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doc: remove inaccurate PersistentEnvExtension.setState/modifyState claim

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Likely a copy-paste mistake

Fixes #3039
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Sebastian Ullrich 2024-09-27 15:59:36 +02:00 • committed by GitHub
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4
src/Lean/Environment.lean
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@ -515,11 +515,11 @@ def addEntry {α β σ : Type} (ext : PersistentEnvExtension α β σ) (env : En
def getState {α β σ : Type} [Inhabited σ] (ext : PersistentEnvExtension α β σ) (env : Environment) : σ :=
(ext.toEnvExtension.getState env).state
/-- Set the current state of the given extension in the given environment. This change is *not* persisted across files. -/
/-- Set the current state of the given extension in the given environment. -/
def setState {α β σ : Type} (ext : PersistentEnvExtension α β σ) (env : Environment) (s : σ) : Environment :=
ext.toEnvExtension.modifyState env fun ps => { ps with state := s }
/-- Modify the state of the given extension in the given environment by applying the given function. This change is *not* persisted across files. -/
/-- Modify the state of the given extension in the given environment by applying the given function. -/
def modifyState {α β σ : Type} (ext : PersistentEnvExtension α β σ) (env : Environment) (f : σ → σ) : Environment :=
ext.toEnvExtension.modifyState env fun ps => { ps with state := f (ps.state) }