1 files changed, 96 insertions, 0 deletions
diff --git a/kotlin-analysis-api/src/main/kotlin/com/google/devtools/ksp/impl/symbol/kotlin/KSFileImpl.kt b/kotlin-analysis-api/src/main/kotlin/com/google/devtools/ksp/impl/symbol/kotlin/KSFileImpl.kt
new file mode 100644
index 00000000..9146b319
--- /dev/null
+++ b/kotlin-analysis-api/src/main/kotlin/com/google/devtools/ksp/impl/symbol/kotlin/KSFileImpl.kt
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2022 Google LLC
+ * Copyright 2010-2022 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.impl.symbol.kotlin
+
+import com.google.devtools.ksp.KSObjectCache
+import com.google.devtools.ksp.processing.impl.KSNameImpl
+import com.google.devtools.ksp.symbol.KSAnnotation
+import com.google.devtools.ksp.symbol.KSDeclaration
+import com.google.devtools.ksp.symbol.KSFile
+import com.google.devtools.ksp.symbol.KSName
+import com.google.devtools.ksp.symbol.KSNode
+import com.google.devtools.ksp.symbol.KSVisitor
+import com.google.devtools.ksp.symbol.Location
+import com.google.devtools.ksp.symbol.Origin
+import com.intellij.psi.PsiFile
+import com.intellij.psi.PsiJavaFile
+import org.jetbrains.kotlin.analysis.api.symbols.KtFileSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtFunctionSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtNamedClassOrObjectSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtPropertySymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtTypeAliasSymbol
+import org.jetbrains.kotlin.psi.KtFile
+
+class KSFileImpl private constructor(private val ktFileSymbol: KtFileSymbol) : KSFile {
+    companion object : KSObjectCache<KtFileSymbol, KSFileImpl>() {
+        fun getCached(ktFileSymbol: KtFileSymbol) = cache.getOrPut(ktFileSymbol) { KSFileImpl(ktFileSymbol) }
+    }
+
+    private val psi: PsiFile
+        get() = ktFileSymbol.psi as PsiFile
+
+    override val packageName: KSName by lazy {
+        when (psi) {
+            is KtFile -> KSNameImpl.getCached((psi as KtFile).packageFqName.asString())
+            is PsiJavaFile -> KSNameImpl.getCached((psi as PsiJavaFile).packageName)
+            else -> throw IllegalStateException("Unhandled psi file type ${psi.javaClass}")
+        }
+    }
+
+    override val fileName: String by lazy {
+        psi.name
+    }
+
+    override val filePath: String by lazy {
+        psi.virtualFile.path
+    }
+
+    override val declarations: Sequence<KSDeclaration> by lazy {
+        analyze {
+            ktFileSymbol.getFileScope().getAllSymbols().map {
+                when (it) {
+                    is KtNamedClassOrObjectSymbol -> KSClassDeclarationImpl.getCached(it)
+                    is KtFunctionSymbol -> KSFunctionDeclarationImpl.getCached(it)
+                    is KtPropertySymbol -> KSPropertyDeclarationImpl.getCached(it)
+                    is KtTypeAliasSymbol -> KSTypeAliasImpl.getCached(it)
+                    else -> throw IllegalStateException("Unhandled ${it.javaClass}")
+                }
+            }
+        }
+    }
+
+    override val origin: Origin = Origin.KOTLIN
+
+    override val location: Location by lazy {
+        ktFileSymbol.psi.toLocation()
+    }
+
+    override val parent: KSNode? = null
+
+    override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
+        return visitor.visitFile(this, data)
+    }
+
+    override val annotations: Sequence<KSAnnotation> by lazy {
+        ktFileSymbol.annotations()
+    }
+
+    override fun toString(): String {
+        return "File: ${this.fileName}"
+    }
+}