feat(cms): add AST traversal (#214)

* created basic traversal function and attempting to unmarshall content

* fixed cmsjson library

* added few tests for ast traversal

* finished ast traversal tests

* added string edit tests, but array edits dont work

* playing around with array operation

* fixed up array function

* fixed array traversal bug

* added more array tests, but object broken now

* edit update object

* minor editor refactor

Co-authored-by: Varun Sethu <[email protected]>
Co-authored-by: vuong <[email protected]>

Author: 3 people

backend/editor/OT/OTClient/operation.ts

@@ -9,12 +9,12 @@ type noop = {};
 
 // atomicOperation is a single operation that can be applied in our system
 type atomicOperation = 
-| { "$type": "stringOperation", stringOperation: stringOperation }
-| { "$type": "integerOperation", integerOperation: integerOperation }
-| { "$type": "booleanOperation", booleanOperation: booleanOperation }
-| { "$type": "objectOperation", objectOperation: objectOperation }
-| { "$type": "arrayOperation", arrayOperation: arrayOperation }
-| { "$type": "noop", noop: noop}
+| { type: "stringOperation", stringOperation: stringOperation }
+| { type: "integerOperation", integerOperation: integerOperation }
+| { type: "booleanOperation", booleanOperation: booleanOperation }
+| { type: "objectOperation", objectOperation: objectOperation }
+| { type: "arrayOperation", arrayOperation: arrayOperation }
+| { type: "noop", noop: noop}
 
 // operation is the atomic operation that is sent between clients and servers
 export type Operation = {
@@ -30,7 +30,7 @@ export const noop: Operation = {
     OperationType: "insert", 
     IsNoOp: true, 
     Operation:  {
-        "$type": "noop",
+        type: "noop",
         noop: {}
     }
 };

backend/editor/OT/client_view.go

@@ -1,7 +1,7 @@
 package editor
 
 import (
-	"cms.csesoc.unsw.edu.au/editor/OT/data"
+	"cms.csesoc.unsw.edu.au/editor/OT/operations"
 	"github.com/gorilla/websocket"
 )
 
@@ -14,15 +14,15 @@ import (
 type clientView struct {
 	socket *websocket.Conn
 
-	sendOp              chan data.Operation
+	sendOp              chan operations.Operation
 	sendAcknowledgement chan empty
 	sendTerminateSignal chan empty
 }
 
 func newClient(socket *websocket.Conn) *clientView {
 	return &clientView{
 		socket:              socket,
-		sendOp:              make(chan data.Operation),
+		sendOp:              make(chan operations.Operation),
 		sendAcknowledgement: make(chan empty),
 		sendTerminateSignal: make(chan empty),
 	}
@@ -54,7 +54,7 @@ func (c *clientView) run(serverPipe pipe, terminatePipe alertLeaving) {
 		default:
 			if _, msg, err := c.socket.ReadMessage(); err == nil {
 				// push the update to the documentServer
-				if request, err := data.ParseOperation(string(msg)); err == nil {
+				if request, err := operations.ParseOperation(string(msg)); err == nil {
 					serverPipe(request)
 					continue
 				}