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common-errors.go: undefinte article selection in error messages

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This commit is contained in:
Celestino Amoroso 2024-12-27 07:13:03 +01:00
parent 0e55f83d56
commit fd912b2eb1
1 changed files with 18 additions and 1 deletions
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19
common-errors.go
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@ -55,8 +55,25 @@ func ErrInvalidParameterValue(funcName, paramName string, paramValue any) error
return fmt.Errorf("%s(): invalid value %s (%v) for parameter %q", funcName, TypeName(paramValue), paramValue, paramName) return fmt.Errorf("%s(): invalid value %s (%v) for parameter %q", funcName, TypeName(paramValue), paramValue, paramName)
} }
func undefArticle(s string) (article string) {
if len(s) > 0 && strings.Contains("aeiou", s[0:1]) {
article = "an"
} else {
article = "a"
}
return
}
func prependUndefArticle(s string) (result string) {
return undefArticle(s) + " " + s
}
func ErrWrongParamType(funcName, paramName, paramType string, paramValue any) error { func ErrWrongParamType(funcName, paramName, paramType string, paramValue any) error {
return fmt.Errorf("%s(): the %q parameter must be a %s, got a %s (%v)", funcName, paramName, paramType, TypeName(paramValue), paramValue) var artWantType, artGotType string
gotType := TypeName(paramValue)
artGotType = prependUndefArticle(gotType)
artWantType = prependUndefArticle(paramType)
return fmt.Errorf("%s(): the %q parameter must be %s, got %s (%v)", funcName, paramName, artWantType, artGotType, paramValue)
} }
func ErrUnknownParam(funcName, paramName string) error { func ErrUnknownParam(funcName, paramName string) error {