30 lines
641 B
Text
30 lines
641 B
Text
/-
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Copyright (c) 2021 Mario Carneiro. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Mario Carneiro
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-/
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module
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prelude
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public import Lean.Elab.Command
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public section
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/-!
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# Defines `#time` command.
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Time the elaboration of a command, and print the result (in milliseconds).
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-/
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namespace Lean.Elab.Time
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open Command
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@[builtin_command_elab Lean.Parser.timeCmd] def elabTimeCmd : CommandElab
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| `(#time%$tk $stx:command) => do
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let start ← IO.monoMsNow
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elabCommand stx
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logInfoAt tk m!"time: {(← IO.monoMsNow) - start}ms"
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| _ => throwUnsupportedSyntax
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end Lean.Elab.Time
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