WIP: deserialize JSLinkingInfo to LinkTimeProperty

tanishiking · tanishiking · commit 03e6b54943d2 · 2024-09-02T21:55:05.000+09:00
diff --git a/ir/shared/src/main/scala/org/scalajs/ir/Serializers.scala b/ir/shared/src/main/scala/org/scalajs/ir/Serializers.scala
@@ -1263,7 +1263,27 @@ object Serializers {
 
         case TagJSNew                => JSNew(readTree(), readTreeOrJSSpreads())
         case TagJSPrivateSelect      => JSPrivateSelect(readTree(), readFieldIdent())
-        case TagJSSelect             => JSSelect(readTree(), readTree())
+        case TagJSSelect             =>
+          readTree() match {
+            case qualifier: JSLinkingInfo if hacks.use16 =>
+              readTree() match {
+                case StringLiteral("productionMode") =>
+                  LinkTimeProperty("core/productionMode")(BooleanType)
+                case StringLiteral("esVersion") =>
+                  LinkTimeProperty("core/esVersion")(IntType)
+                case StringLiteral("assumingES6") =>
+                  LinkTimeProperty("core/assumingES6")(BooleanType)
+                case StringLiteral("isWebAssembly") =>
+                  LinkTimeProperty("core/isWebAssembly")(BooleanType)
+                case StringLiteral("version") =>
+                  LinkTimeProperty("core/linkerVersion")(StringType)
+                case item =>
+                  throw new IOException(
+                      s"Found invalid field access ${item.show} on JSLinkingInfo.")
+              }
+            case qualifier =>
+              JSSelect(qualifier, readTree())
+          }
         case TagJSFunctionApply      => JSFunctionApply(readTree(), readTreeOrJSSpreads())
         case TagJSMethodApply        => JSMethodApply(readTree(), readTree(), readTreeOrJSSpreads())
         case TagJSSuperSelect        => JSSuperSelect(readTree(), readTree(), readTree())
@@ -1283,8 +1303,19 @@ object Serializers {
           JSObjectConstr(List.fill(readInt())((readTree(), readTree())))
         case TagJSGlobalRef          => JSGlobalRef(readString())
         case TagJSTypeOfGlobalRef    => JSTypeOfGlobalRef(readTree().asInstanceOf[JSGlobalRef])
-        case TagJSLinkingInfo        => JSLinkingInfo()
-
+        case TagJSLinkingInfo        =>
+          if (hacks.use16) {
+            JSObjectConstr(List(
+              (StringLiteral("productionMode"), LinkTimeProperty("core/productionMode")(BooleanType)),
+              (StringLiteral("esVersion"), LinkTimeProperty("core/esVersion")(IntType)),
+              (StringLiteral("assumingES6"), LinkTimeProperty("core/assumingES6")(BooleanType)),
+              (StringLiteral("isWebAssembly"), LinkTimeProperty("core/isWebAssembly")(BooleanType)),
+              (StringLiteral("version"), LinkTimeProperty("core/linkerVersion")(StringType))
+            ))
+          } else {
+            throw new IOException(
+                s"Found invalid pre-1.16 JSLinkingInfo def at ${pos}")
+          }
         case TagUndefined      => Undefined()
         case TagNull           => Null()
         case TagBooleanLiteral => BooleanLiteral(readBoolean())
