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move GetStackTracer to stack.go #7

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Merged
lysu merged 1 commit into from
Sep 11, 2018
Merged

move GetStackTracer to stack.go #7

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16 changes: 0 additions & 16 deletions errors.go
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Original file line number Diff line number Diff line change
Expand Up @@ -173,22 +173,6 @@ func AddStack(err error) error {
return WithStack(err)
}

// GetStackTracer will return the first StackTracer in the causer chain.
// This function is used by AddStack to avoid creating redundant stack traces.
//
// You can also use the StackTracer interface on the returned error to get the stack trace.
func GetStackTracer(origErr error) StackTracer {
var stacked StackTracer
WalkDeep(origErr, func(err error) bool {
if stackTracer, ok := err.(StackTracer); ok {
stacked = stackTracer
return true
}
return false
})
return stacked
}

type withStack struct {
error
*stack
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16 changes: 16 additions & 0 deletions stack.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,22 @@ type StackTracer interface {
StackTrace() StackTrace
}

// GetStackTracer will return the first StackTracer in the causer chain.
// This function is used by AddStack to avoid creating redundant stack traces.
//
// You can also use the StackTracer interface on the returned error to get the stack trace.
func GetStackTracer(origErr error) StackTracer {
var stacked StackTracer
WalkDeep(origErr, func(err error) bool {
if stackTracer, ok := err.(StackTracer); ok {
stacked = stackTracer
return true
}
return false
})
return stacked
}

// Frame represents a program counter inside a stack frame.
type Frame uintptr

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