as31: Fix gotoResourceHelper: MyReferredResourceFieldInfo now requires module

idea/idea-android/src/org/jetbrains/kotlin/android/navigation/gotoResourceHelper.kt.as31

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * 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 org.jetbrains.kotlin.android.navigation
+
+import org.jetbrains.android.util.AndroidResourceUtil
+import com.intellij.psi.PsiElement
+import org.jetbrains.android.facet.AndroidFacet
+import org.jetbrains.kotlin.psi.KtSimpleNameExpression
+import com.intellij.psi.util.PsiTreeUtil
+import com.intellij.psi.PsiClass
+import org.jetbrains.android.util.AndroidUtils
+import com.android.SdkConstants
+import org.jetbrains.android.augment.AndroidPsiElementFinder
+import org.jetbrains.kotlin.idea.references.mainReference
+import org.jetbrains.kotlin.psi.KtDotQualifiedExpression
+import org.jetbrains.kotlin.psi.psiUtil.getReceiverExpression
+import org.jetbrains.kotlin.psi.KtExpression
+
+fun getReferenceExpression(element: PsiElement?): KtSimpleNameExpression? {
+    return PsiTreeUtil.getParentOfType<KtSimpleNameExpression>(element, KtSimpleNameExpression::class.java)
+}
+
+// given 'R.a.b' returns info for all three parts of the expression 'a', 'b', 'R'
+fun getInfo(
+        referenceExpression: KtSimpleNameExpression,
+        facet: AndroidFacet
+): AndroidResourceUtil.MyReferredResourceFieldInfo? {
+    val info = getReferredInfo(referenceExpression, facet)
+    if (info != null) return info
+
+    val topMostQualified = referenceExpression.getParentQualified().getParentQualified() ?: return null
+    val selectorCandidate = topMostQualified.selectorExpression as? KtSimpleNameExpression ?: return null
+    return getReferredInfo(selectorCandidate, facet)
+}
+
+private fun KtExpression?.getParentQualified(): KtDotQualifiedExpression? {
+    return this?.parent as? KtDotQualifiedExpression
+}
+
+// returns info if passed expression is 'b' in 'R.a.b'
+private fun getReferredInfo(
+        lastPart: KtSimpleNameExpression,
+        facet: AndroidFacet
+): AndroidResourceUtil.MyReferredResourceFieldInfo? {
+    val resFieldName = lastPart.getReferencedName()
+    if (resFieldName.isEmpty()) return null
+
+    val middlePart = getReceiverAsSimpleNameExpression(lastPart) ?: return null
+
+    val resClassName = middlePart.getReferencedName()
+    if (resClassName.isEmpty()) return null
+
+    val firstPart = getReceiverAsSimpleNameExpression(middlePart) ?: return null
+
+    val resolvedClass = firstPart.mainReference.resolve() as? PsiClass ?: return null
+
+    //the following code is copied from
+    // org.jetbrains.android.util.AndroidResourceUtil.getReferredResourceOrManifestField
+    // (org.jetbrains.android.facet.AndroidFacet, com.intellij.psi.PsiReferenceExpression, java.lang.String, boolean)
+    val classShortName = resolvedClass.name
+
+    val fromManifest = AndroidUtils.MANIFEST_CLASS_NAME == classShortName
+
+    if (!fromManifest && AndroidUtils.R_CLASS_NAME != classShortName) {
+        return null
+    }
+    val qName = resolvedClass.qualifiedName
+
+    if (SdkConstants.CLASS_R == qName || AndroidPsiElementFinder.INTERNAL_R_CLASS_QNAME == qName) {
+        return AndroidResourceUtil.MyReferredResourceFieldInfo(resClassName, resFieldName, facet.module, true, false)
+    }
+    val containingFile = resolvedClass.containingFile ?: return null
+
+    val isFromCorrectFile =
+            if (fromManifest) AndroidResourceUtil.isManifestJavaFile(facet, containingFile)
+            else AndroidResourceUtil.isRJavaFile(facet, containingFile)
+
+    if (!isFromCorrectFile) {
+        return null
+    }
+
+    return AndroidResourceUtil.MyReferredResourceFieldInfo(resClassName, resFieldName, facet.module, false, fromManifest)
+}
+
+private fun getReceiverAsSimpleNameExpression(exp: KtSimpleNameExpression): KtSimpleNameExpression? {
+    val receiver = exp.getReceiverExpression()
+    return when (receiver) {
+        is KtSimpleNameExpression -> {
+            receiver
+        }
+        is KtDotQualifiedExpression -> {
+            receiver.selectorExpression as? KtSimpleNameExpression
+        }
+        else -> null
+    }
+
+}