feat: use the eval_cache hack to allow traversing of REPL results (#764)

Author: zobo

src/phpDebug.ts

@@ -15,6 +15,7 @@ import { BreakpointManager, BreakpointAdapter } from './breakpoints'
 import * as semver from 'semver'
 import { LogPointManager } from './logpoint'
 import { ProxyConnect } from './proxyConnect'
+import { randomUUID } from 'crypto'
 
 if (process.env['VSCODE_NLS_CONFIG']) {
     try {
@@ -1214,6 +1215,14 @@ class PhpDebugSession extends vscode.DebugSession {
                 if (response.property) {
                     result = response.property
                 }
+            } else if (args.context === 'repl') {
+                const uuid = randomUUID()
+                await connection.sendEvalCommand(`$GLOBALS['eval_cache']['${uuid}']=${args.expression}`)
+                const ctx = await stackFrame.getContexts() // TODO CACHE THIS
+                const response = await connection.sendPropertyGetNameCommand(`$eval_cache['${uuid}']`, ctx[1])
+                if (response.property) {
+                    result = response.property
+                }
             } else {
                 const response = await connection.sendEvalCommand(args.expression)
                 if (response.result) {