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-rw-r--r--internal/tree/contract.go23
1 files changed, 23 insertions, 0 deletions
diff --git a/internal/tree/contract.go b/internal/tree/contract.go
new file mode 100644
index 0000000..b949339
--- /dev/null
+++ b/internal/tree/contract.go
@@ -0,0 +1,23 @@
+package tree
+
+import (
+ "context"
+
+ dmodel "go.neonxp.dev/djson/internal/model"
+ "go.neonxp.dev/json/model"
+)
+
+type Core interface {
+ Init() error
+ Get(nodes []string) (model.Node, error)
+ Mutation(ctx context.Context, mut *dmodel.Mutation) error
+ State() CoreState
+}
+
+type CoreState int
+
+const (
+ Running CoreState = iota
+ Ready
+ Failed
+)