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Move depth first order numbering of CFG nodes to codepropertygraph repo. #1683

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Move depth first order numbering of CFG nodes to codepropertygraph repo. #1683

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15 changes: 15 additions & 0 deletions schema/src/main/scala/io/shiftleft/codepropertygraph/schema/Cfg.scala
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package io.shiftleft.codepropertygraph.schema

import overflowdb.schema.EdgeType.Cardinality
import overflowdb.schema.Property.ValueType
import overflowdb.schema.{SchemaBuilder, SchemaInfo}

object Cfg extends SchemaBase {
Expand Down Expand Up @@ -101,6 +102,20 @@ object Cfg extends SchemaBase {

methodRef.addOutEdge(edge = cfg, inNode = methodReturn)
typeRef.addOutEdge(edge = cfg, inNode = methodReturn)

val depthFirstOrder = builder
.addProperty(
name = "DEPTH_FIRST_ORDER",
valueType = ValueType.Int,
comment = s"""The depth first ordering number. This is the reverse of a post order numbering.
|Among other things this can be to detect retreating CFG edges and back edges
|in reducible CFGs""".stripMargin
)
.mandatory(-1)
.protoId(17)

cfgNode.addProperties(depthFirstOrder)

}

}