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checker: limit showing too many unhandled match cases

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This commit is contained in:
Delyan Angelov 2020-07-10 15:45:55 +03:00
parent e85c1fb762
commit 88946a34bb
1 changed files with 10 additions and 1 deletions
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11
vlib/v/checker/checker.v
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@ -12,6 +12,7 @@ import v.errors
const (
max_nr_errors = 300
match_exhaustive_cutoff_limit = 10
enum_min = int(0x80000000)
enum_max = 0x7FFFFFFF
)
@ -2594,7 +2595,15 @@ fn (mut c Checker) match_exprs(mut node ast.MatchExpr, type_sym table.TypeSymbol
}
mut err_details := 'match must be exhaustive'
if unhandled.len > 0 {
err_details += ' (add match branches for: ' + unhandled.join(', ') + ' or `else {}` at the end)'
err_details += ' (add match branches for: '
if unhandled.len < match_exhaustive_cutoff_limit {
err_details += unhandled.join(', ')
} else {
remaining := unhandled.len - match_exhaustive_cutoff_limit
err_details += unhandled[0..match_exhaustive_cutoff_limit].join(', ')
err_details += ', and ${remaining} others ...'
}
err_details += ' or `else {}` at the end)'
} else {
err_details += ' (add `else {}` at the end)'
}