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[spec] Fix validation rule for catch and catch all #1874

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Mar 4, 2025
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[spec] Fix validation rule for catch and catch all #1874

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8 changes: 4 additions & 4 deletions document/core/valid/instructions.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -2117,15 +2117,15 @@ Control Instructions

* The label :math:`C.\CLABELS[l]` must be defined in the context.

* The :ref:`result type <syntax-resulttype>` :math:`[t^\ast]` must be the same as :math:`C.\CLABELS[l]`.
* The :ref:`result type <syntax-resulttype>` :math:`[t^\ast]` must :ref:`match <match-resulttype>` :math:`C.\CLABELS[l]`.

* Then the catch clause is valid.

.. math::
\frac{
\expanddt(C.\CTAGS[x]) = [t^\ast] \toF []
\qquad
C.\CLABELS[l] = [t^\ast]
C \vdashresulttypematch [t^\ast] \matchesresulttype C.\CLABELS[l]
}{
C \vdashcatch \CATCH~x~l \ok
}
Expand Down Expand Up @@ -2159,13 +2159,13 @@ Control Instructions

* The label :math:`C.\CLABELS[l]` must be defined in the context.

* The :ref:`result type <syntax-resulttype>` :math:`C.\CLABELS[l]` must be empty.
* The :ref:`result type <syntax-resulttype>` :math:`[]` must :ref:`match <match-resulttype>` :math:`C.\CLABELS[l]`.

* Then the catch clause is valid.

.. math::
\frac{
C.\CLABELS[l] = []
C \vdashresulttypematch [] \matchesresulttype C.\CLABELS[l]
}{
C \vdashcatch \CATCHALL~l \ok
}
Expand Down
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