31 lines
686 B
Go
31 lines
686 B
Go
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package build
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import (
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"github.com/mmcloughlin/avo/internal/stack"
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"github.com/mmcloughlin/avo/src"
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)
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// Error represents an error during building, optionally tagged with the position at which it happened.
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type Error struct {
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Position src.Position
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Err error
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}
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// exterr constructs an Error with position derived from the first frame in the
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// call stack outside this package.
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func exterr(err error) Error {
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e := Error{Err: err}
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if f := stack.ExternalCaller(); f != nil {
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e.Position = src.FramePosition(*f).Relwd()
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}
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return e
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}
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func (e Error) Error() string {
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msg := e.Err.Error()
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if e.Position.IsValid() {
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return e.Position.String() + ": " + msg
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}
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return msg
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}
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