internal/core/adt: add disjunction info as blob to debug output

We use the same disjunctInfo string as on the log
to ID in what context a graph is generate.

Signed-off-by: Marcel van Lohuizen <[email protected]>
Change-Id: I8ae51526cb159d2be6d9fc34813140715edfb260
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1207440
Reviewed-by: Daniel Martí <[email protected]>
TryBot-Result: CUEcueckoo <[email protected]>
Unity-Result: CUE porcuepine <[email protected]>

Author: mpvl

internal/core/adt/debug.go

@@ -324,6 +324,7 @@ func CreateMermaidGraph(ctx *OpContext, v *Vertex, all bool) (graph string, hasE
 
 	io.WriteString(m.w, "graph TD\n")
 	io.WriteString(m.w, "   classDef err fill:#e01010,stroke:#000000,stroke-width:3,font-size:medium\n")
+	fmt.Fprintf(m.w, "   title[<b>%v</b>]\n", ctx.disjunctInfo())
 
 	indent(m.w, 1)
 	fmt.Fprintf(m.w, "style %s stroke-width:5\n\n", m.vertexID(v))