lean-ja / lean-ja/lean-by-example
`elab` 使用例： `assert_not_imported` コマンド
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宣言的コマンド
- Dominant language
- Lean
- Stars
- 188
- Forks
- 15
- Avg merge
- 9h 8m
- Merged PRs (30d)
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Description
import Mathlib.Tactic.Linter
open Lean in
elab "assert_not_imported " ids:ident* : command => do
let mods := (← getEnv).allImportedModuleNames
for id in ids do
if mods.contains id.getId then logWarningAt id m!"'{id}' is imported"
if let none ← (← searchPathRef.get).findModuleWithExt "olean" id.getId then
logWarningAt id m!"'{id}' does not exist"
assert_not_imported
Mathlib.Tactic.Common -- ok
Lean.Elab.Command -- 'Lean.Elab.Command' is imported
I_do_not_exist -- 'I_do_not_exist.lean' does not exist
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start from the assert_not_imported command example in the issue and inspect the repository's existing Lean-by-example structure to find the appropriate location. Add the usage example with its expected warnings, and verify that the example renders or checks consistently with the surrounding examples.
Written by the indexing model from the issue text.
Assessment
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100