| /* |
| * Copyright 2000-2014 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.psi.util; |
| |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class ClassUtil { |
| private ClassUtil() {} |
| |
| public static String extractPackageName(String className) { |
| if (className != null) { |
| int i = className.lastIndexOf('.'); |
| return i == -1 ? "" : className.substring(0, i); |
| |
| } |
| return null; |
| } |
| |
| @NotNull |
| public static String extractClassName(@NotNull String fqName) { |
| int i = fqName.lastIndexOf('.'); |
| return i == -1 ? fqName : fqName.substring(i + 1); |
| } |
| |
| public static String createNewClassQualifiedName(String qualifiedName, String className) { |
| if (className == null){ |
| return null; |
| } |
| if (qualifiedName == null || qualifiedName.isEmpty()){ |
| return className; |
| } |
| return qualifiedName + "." + extractClassName(className); |
| } |
| |
| public static PsiDirectory sourceRoot(PsiDirectory containingDirectory) { |
| while (containingDirectory != null) { |
| if (JavaDirectoryService.getInstance().isSourceRoot(containingDirectory)) { |
| return containingDirectory; |
| } |
| containingDirectory = containingDirectory.getParentDirectory(); |
| } |
| return null; |
| } |
| |
| public static void formatClassName(@NotNull final PsiClass aClass, @NotNull StringBuilder buf) { |
| final String qName = aClass.getQualifiedName(); |
| if (qName != null) { |
| buf.append(qName); |
| } |
| else { |
| final PsiClass parentClass = getContainerClass(aClass); |
| if (parentClass != null) { |
| formatClassName(parentClass, buf); |
| buf.append("$"); |
| buf.append(getNonQualifiedClassIdx(aClass)); |
| final String name = aClass.getName(); |
| if (name != null) { |
| buf.append(name); |
| } |
| } |
| } |
| } |
| |
| @Nullable |
| private static PsiClass getContainerClass(@NotNull PsiClass aClass) { |
| PsiElement parent = aClass.getContext(); |
| while (parent != null && !(parent instanceof PsiClass)) { |
| parent = parent.getContext(); |
| } |
| return (PsiClass)parent; |
| } |
| |
| public static int getNonQualifiedClassIdx(@NotNull final PsiClass psiClass) { |
| final int[] result = {-1}; |
| final PsiClass containingClass = getContainerClass(psiClass); |
| if (containingClass != null) { |
| containingClass.accept(new JavaRecursiveElementVisitor() { |
| private int myCurrentIdx = 0; |
| |
| @Override public void visitElement(PsiElement element) { |
| if (result[0] == -1) { |
| super.visitElement(element); |
| } |
| } |
| |
| @Override public void visitClass(PsiClass aClass) { |
| super.visitClass(aClass); |
| if (aClass.getQualifiedName() == null) { |
| myCurrentIdx++; |
| if (psiClass == aClass) { |
| result[0] = myCurrentIdx; |
| } |
| } |
| } |
| }); |
| } |
| return result[0]; |
| } |
| |
| public static PsiClass findNonQualifiedClassByIndex(@NotNull String indexName, @NotNull final PsiClass containingClass) { |
| return findNonQualifiedClassByIndex(indexName, containingClass, false); |
| } |
| |
| public static PsiClass findNonQualifiedClassByIndex(@NotNull String indexName, @NotNull final PsiClass containingClass, |
| final boolean jvmCompatible) { |
| String prefix = getDigitPrefix(indexName); |
| final int idx = !prefix.isEmpty() ? Integer.parseInt(prefix) : -1; |
| final String name = prefix.length() < indexName.length() ? indexName.substring(prefix.length()) : null; |
| final PsiClass[] result = new PsiClass[1]; |
| containingClass.accept(new JavaRecursiveElementVisitor() { |
| private int myCurrentIdx = 0; |
| |
| @Override public void visitElement(PsiElement element) { |
| if (result[0] == null) { |
| super.visitElement(element); |
| } |
| } |
| |
| @Override public void visitClass(PsiClass aClass) { |
| if (!jvmCompatible) { |
| super.visitClass(aClass); |
| if (aClass.getQualifiedName() == null) { |
| myCurrentIdx++; |
| if (myCurrentIdx == idx && Comparing.strEqual(name, aClass.getName())) { |
| result[0] = aClass; |
| } |
| } |
| return; |
| } |
| if (aClass == containingClass) { |
| super.visitClass(aClass); |
| return; |
| } |
| if (Comparing.strEqual(name, aClass.getName())) { |
| myCurrentIdx++; |
| if (myCurrentIdx == idx || idx == -1) { |
| result[0] = aClass; |
| } |
| } |
| } |
| |
| @Override public void visitTypeParameter(final PsiTypeParameter classParameter) { |
| if (!jvmCompatible) { |
| super.visitTypeParameter(classParameter); |
| } |
| else { |
| visitElement(classParameter); |
| } |
| } |
| }); |
| return result[0]; |
| } |
| |
| @NotNull |
| private static String getDigitPrefix(@NotNull String indexName) { |
| int i; |
| for (i = 0; i < indexName.length(); i++) { |
| final char c = indexName.charAt(i); |
| if (!Character.isDigit(c)) { |
| break; |
| } |
| } |
| return i == 0 ? "" : indexName.substring(0, i); |
| } |
| |
| |
| /** |
| * Finds anonymous classes. Uses javac notation. |
| * @param psiManager project to search |
| * @param externalName class qualified name |
| * @return found psiClass |
| */ |
| @Nullable |
| public static PsiClass findPsiClass(@NotNull PsiManager psiManager, @NotNull String externalName){ |
| return findPsiClass(psiManager, externalName, null, false); |
| } |
| |
| @Nullable |
| public static PsiClass findPsiClass(@NotNull PsiManager psiManager, |
| @NotNull String externalName, |
| PsiClass psiClass, |
| boolean jvmCompatible) { |
| return findPsiClass(psiManager, externalName, psiClass, jvmCompatible, GlobalSearchScope.allScope(psiManager.getProject())); |
| } |
| |
| @Nullable |
| public static PsiClass findPsiClass(@NotNull PsiManager psiManager, |
| @NotNull String externalName, |
| @Nullable PsiClass psiClass, |
| boolean jvmCompatible, |
| @NotNull GlobalSearchScope scope) { |
| for (int pos = 0; pos < externalName.length(); pos++) { |
| if (externalName.charAt(pos) == '$') { |
| PsiClass parentClass = psiClass; |
| if (parentClass == null) { |
| parentClass = JavaPsiFacade.getInstance(psiManager.getProject()) |
| .findClass(externalName.substring(0, pos), scope); |
| } |
| if (parentClass == null) continue; |
| PsiClass res = findSubclass(psiManager, externalName.substring(pos + 1), parentClass, jvmCompatible); |
| if (res != null) return res; |
| } |
| } |
| return JavaPsiFacade.getInstance(psiManager.getProject()).findClass(externalName, scope); |
| } |
| |
| @Nullable |
| private static PsiClass findSubclass(@NotNull PsiManager psiManager, |
| @NotNull String externalName, |
| final PsiClass psiClass, |
| final boolean jvmCompatible) { |
| for (int pos = 0; pos < externalName.length(); pos++) { |
| if (externalName.charAt(pos) == '$') { |
| PsiClass anonymousClass = findNonQualifiedClassByIndex(externalName.substring(0, pos), psiClass, jvmCompatible); |
| if (anonymousClass == null) return null; |
| PsiClass res = findPsiClass(psiManager, externalName.substring(pos), anonymousClass, jvmCompatible); |
| if (res != null) return res; |
| } |
| } |
| return findNonQualifiedClassByIndex(externalName, psiClass, jvmCompatible); |
| } |
| |
| @Nullable |
| public static String getJVMClassName(@NotNull PsiClass aClass) { |
| final PsiClass containingClass = aClass.getContainingClass(); |
| if (containingClass != null) { |
| String parentName = getJVMClassName(containingClass); |
| if (parentName == null) { |
| return null; |
| } |
| |
| return parentName + "$" + aClass.getName(); |
| } |
| return aClass.getQualifiedName(); |
| } |
| |
| |
| @Nullable |
| public static PsiClass findPsiClassByJVMName(@NotNull PsiManager manager, @NotNull String jvmClassName) { |
| return findPsiClass(manager, jvmClassName.replace('/', '.'), null, true); |
| } |
| } |