Set get frames public

Author: ldreux

error.go

@@ -170,9 +170,9 @@ func (e *Error) Unwrap() error {
 // Format implements the Formatter interface.
 // Supported verbs:
 //
-// 		%s		simple message output
-// 		%v		same as %s
-// 		%+v		full output complete with a stack trace
+//	%s		simple message output
+//	%v		same as %s
+//	%+v		full output complete with a stack trace
 //
 // In is nearly always preferable to use %+v format.
 // If a stack trace is not required, it should be omitted at the moment of creation rather in formatting.
@@ -189,6 +189,20 @@ func (e *Error) Format(s fmt.State, verb rune) {
 	}
 }
 
+// GetFrames exports stacktrace as frame slice.
+func (e *Error) GetFrames() []Frame {
+	if e.stackTrace == nil {
+		return nil
+	}
+
+	pc, _ := e.stackTrace.deduplicateFramesWithCause()
+	if len(pc) == 0 {
+		return nil
+	}
+
+	return frameHelperSingleton.GetFrames(pc)
+}
+
 // Error implements the error interface.
 // A result is the same as with %s formatter and does not contain a stack trace.
 func (e *Error) Error() string {

stackframe.go

@@ -4,7 +4,7 @@ import (
 	"runtime"
 )
 
-type frame interface {
+type Frame interface {
 	Function() string
 	File() string
 	Line() int
@@ -31,9 +31,9 @@ func (f *defaultFrame) Line() int {
 	return f.frame.Line
 }
 
-func (c *frameHelper) GetFrames(pcs []uintptr) []frame {
+func (c *frameHelper) GetFrames(pcs []uintptr) []Frame {
 	frames := runtime.CallersFrames(pcs[:])
-	result := make([]frame, 0, len(pcs))
+	result := make([]Frame, 0, len(pcs))
 
 	var rawFrame runtime.Frame
 	next := true

stacktrace.go

@@ -55,7 +55,7 @@ var transformStackTraceLineNoop StackTraceFilePathTransformer = func(line string
 
 const (
 	stackTraceDepth = 128
-	// tuned so that in all control paths of error creation the first frame is useful
+	// tuned so that in all control paths of error creation the first Frame is useful
 	// that is, the frame where New/Wrap/Decorate etc. are called; see TestStackTraceStart
 	skippedFrames = 6
 )