add explicit type arguments intention (IDEA-173960)

2026-09-27 10:03:11 +07:00 · 2017-06-09 21:15:37 +03:00
parent d55d21f31c
commit fcd84a0d35
7 changed files with 173 additions and 0 deletions
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2000-2017 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 com.intellij.codeInsight.intention.impl;
+
+import com.intellij.codeInsight.CodeInsightBundle;
+import com.intellij.codeInsight.daemon.impl.quickfix.AddTypeArgumentsFix;
+import com.intellij.codeInsight.intention.BaseElementAtCaretIntentionAction;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.project.Project;
+import com.intellij.psi.*;
+import com.intellij.psi.codeStyle.CodeStyleManager;
+import com.intellij.psi.infos.MethodCandidateInfo;
+import com.intellij.psi.util.PsiTreeUtil;
+import com.intellij.util.IncorrectOperationException;
+import com.intellij.util.ObjectUtils;
+import org.jetbrains.annotations.NotNull;
+
+public class AddExplicitTypeArgumentsIntention extends BaseElementAtCaretIntentionAction {
+  @Override
+  @NotNull
+  public String getFamilyName() {
+    return CodeInsightBundle.message("intention.add.explicit.type.arguments.family");
+  }
+
+  @Override
+  public boolean isAvailable(@NotNull Project project, Editor editor, @NotNull PsiElement element) {
+    PsiIdentifier identifier = ObjectUtils.tryCast(element, PsiIdentifier.class);
+    if (identifier == null) return false;
+    PsiReferenceExpression methodExpression = ObjectUtils.tryCast(identifier.getParent(), PsiReferenceExpression.class);
+    if (methodExpression == null) return false;
+    PsiElement parent = methodExpression.getParent();
+    if (parent instanceof PsiMethodCallExpression && ((PsiMethodCallExpression)parent).getTypeArguments().length == 0) {
+      JavaResolveResult result = ((PsiMethodCallExpression)parent).resolveMethodGenerics();
+      if (result instanceof MethodCandidateInfo && ((MethodCandidateInfo)result).isApplicable()) {
+        PsiElement method = result.getElement();
+        setText(getFamilyName());
+        return method instanceof PsiMethod && !((PsiMethod)method).isConstructor() && ((PsiMethod)method).hasTypeParameters();
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) throws IncorrectOperationException {
+    PsiMethodCallExpression callExpression = PsiTreeUtil.getParentOfType(element, PsiMethodCallExpression.class);
+    assert callExpression != null;
+    PsiExpression withArgs = AddTypeArgumentsFix.addTypeArguments(callExpression, null);
+    if (withArgs != null) {
+      CodeStyleManager.getInstance(project).reformat(callExpression.replace(withArgs));
+    }
+  }
+}