2652cc18b8
This PR standardizes error messages by quoting names with backticks. The changes were automated, so some cases may still be missing.
67 lines
1.7 KiB
Text
67 lines
1.7 KiB
Text
/-! # Errors in match patterns
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This file tests various error messages that arise from missing, extra, uninferrable, or otherwise
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erroneous arguments in match patterns.
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-/
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inductive T where
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| exp (a b c : Nat)
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| imp {a b c : Nat}
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| mix {a b : Nat} (c : Nat)
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/-- error: Invalid pattern: Too many arguments to `exp`; expected 3 explicit arguments -/
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#guard_msgs in
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def T.mixNamedPositional₁ : T → Unit
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| exp (b := x) y z w => ()
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| _ => ()
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/-- error: Invalid pattern: Too many arguments to `imp`; expected 0 explicit arguments -/
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#guard_msgs in
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def T.mixNamedPositional₂ : T → Unit
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| imp (a := x) y => ()
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| _ => ()
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/--
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error: Invalid pattern: Not enough arguments to `imp`; expected 3 arguments
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Hint: To ignore all remaining arguments, use the ellipsis notation `..`
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-/
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#guard_msgs in
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def T.mixNamedPositional₃ : T → Unit
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| @imp (a := x) y => ()
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| _ => ()
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/-- error: Invalid pattern: Too many arguments to `mix`; expected 1 explicit argument -/
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#guard_msgs in
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def T.mixNamedPositional₄ : T → Unit
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| mix (b := x) y z => ()
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| _ => ()
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def matchExplicitValid (n : Nat) :=
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match n with
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| @Nat.zero => ()
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| _ => ()
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/-- error: Invalid pattern variable: Variable name `xs` was already used -/
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#guard_msgs in
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def dupVar (xs : List Nat) : List Nat :=
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match xs with
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| List.cons xs xs => true
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| _ => false
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/--
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error: Invalid pattern variable: Variable name must be atomic, but `x.y` has multiple components
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-/
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#guard_msgs in
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def compVarName : Unit × Unit → Unit
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| (_, x.y) => x.y
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/--
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error: Invalid match expression: This pattern contains metavariables:
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[]
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-/
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#guard_msgs in
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def List.len x :=
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match x with
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| [] => 0
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| _ :: xs => 1 + len xs
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