feat: dag reader

taskfile/ast/graph.go

@@ -0,0 +1,41 @@
+package ast
+
+import (
+	"os"
+
+	"github.com/dominikbraun/graph"
+	"github.com/dominikbraun/graph/draw"
+)
+
+type TaskfileGraph struct {
+	graph.Graph[string, *TaskfileVertex]
+}
+
+// A TaskfileVertex is a vertex on the Taskfile DAG.
+type TaskfileVertex struct {
+	URI      string
+	Taskfile *Taskfile
+}
+
+func taskfileHash(vertex *TaskfileVertex) string {
+	return vertex.URI
+}
+
+func NewTaskfileGraph() *TaskfileGraph {
+	return &TaskfileGraph{
+		graph.New(taskfileHash,
+			graph.Directed(),
+			graph.PreventCycles(),
+			graph.Rooted(),
+		),
+	}
+}
+
+func (r *TaskfileGraph) Visualize(filename string) error {
+	f, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return draw.DOT(r.Graph, f)
+}