to kotlin

src/org/jetbrains/jet/j2k/visitors/ThisVisitor.java

@@ -1,56 +0,0 @@
-/*
- * Copyright 2010-2012 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.jet.j2k.visitors;
-
-import com.google.common.collect.Sets;
-import com.intellij.psi.*;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.Set;
-
-/**
- * @author ignatov
- */
-public class ThisVisitor extends JavaRecursiveElementVisitor {
-    @NotNull
-    private final Set<PsiMethod> myResolvedConstructors = Sets.newLinkedHashSet();
-
-    @Override
-    public void visitReferenceExpression(@NotNull PsiReferenceExpression expression) {
-        for (PsiReference r : expression.getReferences())
-            if (r.getCanonicalText().equals("this")) {
-                final PsiElement res = r.resolve();
-                if (res != null && res instanceof PsiMethod && ((PsiMethod) res).isConstructor()) {
-                    myResolvedConstructors.add((PsiMethod) res);
-                }
-            }
-    }
-
-    @Nullable
-    public PsiMethod getPrimaryConstructor() {
-        if (myResolvedConstructors.size() > 0) {
-            PsiMethod first = myResolvedConstructors.toArray(new PsiMethod[myResolvedConstructors.size()])[0];
-            for (PsiMethod m : myResolvedConstructors)
-                if (m.hashCode() != first.hashCode()) {
-                    return null;
-                }
-            return first;
-        }
-        return null;
-    }
-}

src/org/jetbrains/jet/j2k/visitors/ThisVisitor.kt

@@ -0,0 +1,34 @@
+package org.jetbrains.jet.j2k.visitors
+
+import com.intellij.psi.*
+import org.jetbrains.annotations.Nullable
+import java.util.Set
+import java.util.LinkedHashSet
+
+public open class ThisVisitor(): JavaRecursiveElementVisitor() {
+    private val myResolvedConstructors: Set<PsiMethod> = LinkedHashSet<PsiMethod>()
+
+    public override fun visitReferenceExpression(expression: PsiReferenceExpression?): Unit {
+        for (r : PsiReference? in expression?.getReferences()) {
+            if (r?.getCanonicalText() == "this") {
+                val res: PsiElement? = r?.resolve()
+                if (res is PsiMethod && res.isConstructor()) {
+                    myResolvedConstructors.add(res)
+                }
+            }
+        }
+    }
+
+    public open fun getPrimaryConstructor(): PsiMethod? {
+        if (myResolvedConstructors.size() > 0) {
+            val first: PsiMethod = myResolvedConstructors.iterator().next()
+            for (m in myResolvedConstructors)
+                if (m.hashCode() != first.hashCode()) {
+                    return null
+                }
+
+            return first
+        }
+        return null
+    }
+}