1 files changed, 46 insertions, 0 deletions
diff --git a/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/DualLookupTracker.kt b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/DualLookupTracker.kt
new file mode 100644
index 00000000..86acaf60
--- /dev/null
+++ b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/DualLookupTracker.kt
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2021 Google LLC
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.devtools.ksp
+
+import org.jetbrains.kotlin.incremental.LookupTrackerImpl
+import org.jetbrains.kotlin.incremental.components.LookupTracker
+import org.jetbrains.kotlin.incremental.components.Position
+import org.jetbrains.kotlin.incremental.components.ScopeKind
+
+class DualLookupTracker : LookupTracker {
+    val symbolTracker = LookupTrackerImpl(LookupTracker.DO_NOTHING)
+    val classTracker = LookupTrackerImpl(LookupTracker.DO_NOTHING)
+
+    override val requiresPosition: Boolean
+        get() = symbolTracker.requiresPosition || classTracker.requiresPosition
+
+    override fun record(filePath: String, position: Position, scopeFqName: String, scopeKind: ScopeKind, name: String) {
+        symbolTracker.record(filePath, position, scopeFqName, scopeKind, name)
+        if (scopeKind == ScopeKind.CLASSIFIER) {
+            val className = scopeFqName.substringAfterLast('.')
+            val outerScope = scopeFqName.substringBeforeLast('.', "<anonymous>")
+            // DO NOT USE: ScopeKind is meaningless
+            classTracker.record(filePath, position, outerScope, scopeKind, className)
+        }
+    }
+
+    override fun clear() {
+        // Do not clear symbolTracker and classTracker.
+        // LookupTracker.clear() is called in repeatAnalysisIfNeeded, but we need records across all rounds.
+    }
+}