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66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
package merry
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import (
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v2 "github.com/ansel1/merry/v2"
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)
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// RegisterDetail registers an error property key in a global registry, with a label.
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// The registry is used by the Details() function. Registered error properties will
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// be included in Details() output, if the value of that error property is not nil.
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// For example:
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//
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// err := New("boom")
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// err = err.WithValue(colorKey, "red")
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// fmt.Println(Details(err))
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//
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// // Output:
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// // boom
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// //
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// // <stacktrace>
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//
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// RegisterDetail("Color", colorKey)
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// fmt.Println(Details(err))
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//
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// // Output:
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// // boom
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// // Color: red
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// //
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// // <stacktrace>
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//
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// Error property keys are typically not exported by the packages which define them.
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// Packages instead export functions which let callers access that property.
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// It's therefore up to the package
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// to register those properties which would make sense to include in the Details() output.
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// In other words, it's up to the author of the package which generates the errors
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// to publish printable error details, not the callers of the package.
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func RegisterDetail(label string, key interface{}) {
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v2.RegisterDetail(label, key)
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}
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// Location returns zero values if e has no stacktrace
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func Location(err error) (file string, line int) {
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return v2.Location(err)
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}
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// SourceLine returns the string representation of
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// Location's result or an empty string if there's
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// no stracktrace.
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func SourceLine(err error) string {
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return v2.SourceLine(err)
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}
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// Stacktrace returns the error's stacktrace as a string formatted
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// the same way as golangs runtime package.
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// If e has no stacktrace, returns an empty string.
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func Stacktrace(err error) string {
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return v2.Stacktrace(err)
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}
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// Details returns e.Error(), e's stacktrace, and any additional details which have
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// be registered with RegisterDetail. User message and HTTP code are already registered.
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//
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// The details of each error in e's cause chain will also be printed.
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func Details(err error) string {
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return v2.Details(err)
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}
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