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fix: add an explicit error message when the graph has several roots #50

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merged 1 commit into from May 9, 2019
Merged

fix: add an explicit error message when the graph has several roots #50

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7 changes: 6 additions & 1 deletion backend/x/gorgonnx/graph.go
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@@ -1,6 +1,8 @@
package gorgonnx

import (
"fmt"

"github.com/owulveryck/onnx-go"
"gonum.org/v1/gonum/graph"
"gonum.org/v1/gonum/graph/simple"
Expand Down Expand Up @@ -57,7 +59,10 @@ func (g *Graph) PopulateExprgraph() error {
}
}
if len(g.roots) != 1 {
return &onnx.ErrNotImplemented{}
return &onnx.ErrNotImplemented{
Message: fmt.Sprintf("the model have %v roots (output), but only graphs with one output is supported by this backend",
len(g.roots)),
}
}
return g.walk(g.roots[0])
}