| /* |
| * Copyright 2000-2013 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.jetbrains.python.inspections.quickfix; |
| |
| import com.intellij.codeInspection.LocalInspectionToolSession; |
| import com.intellij.codeInspection.LocalQuickFix; |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiNamedElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.usageView.UsageInfo; |
| import com.jetbrains.python.PyBundle; |
| import com.jetbrains.python.PyNames; |
| import com.jetbrains.python.codeInsight.imports.AddImportHelper; |
| import com.jetbrains.python.inspections.unresolvedReference.PyUnresolvedReferencesInspection; |
| import com.jetbrains.python.psi.*; |
| import com.jetbrains.python.refactoring.PyRefactoringUtil; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * User: ktisha |
| */ |
| public class PyMakeFunctionFromMethodQuickFix implements LocalQuickFix { |
| public PyMakeFunctionFromMethodQuickFix() { |
| } |
| |
| @NotNull |
| public String getName() { |
| return PyBundle.message("QFIX.NAME.make.function"); |
| } |
| |
| @NonNls |
| @NotNull |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| public void applyFix(@NotNull final Project project, @NotNull final ProblemDescriptor descriptor) { |
| final PsiElement element = descriptor.getPsiElement(); |
| final PyFunction problemFunction = PsiTreeUtil.getParentOfType(element, PyFunction.class); |
| if (problemFunction == null) return; |
| final PyClass containingClass = problemFunction.getContainingClass(); |
| if (containingClass == null) return; |
| |
| final List<UsageInfo> usages = PyRefactoringUtil.findUsages(problemFunction, false); |
| PyUtil.deleteParameter(problemFunction, 0); |
| |
| PsiElement copy = problemFunction.copy(); |
| final PyStatementList classStatementList = containingClass.getStatementList(); |
| classStatementList.deleteChildRange(problemFunction, problemFunction); |
| if (classStatementList.getStatements().length < 1) { |
| classStatementList.add(PyElementGenerator.getInstance(project).createPassStatement()); |
| } |
| final PsiFile file = containingClass.getContainingFile(); |
| PyClass aClass = PsiTreeUtil.getTopmostParentOfType(containingClass, PyClass.class); |
| if (aClass == null) |
| aClass = containingClass; |
| copy = file.addBefore(copy, aClass); |
| |
| for (UsageInfo usage : usages) { |
| final PsiElement usageElement = usage.getElement(); |
| if (usageElement instanceof PyReferenceExpression) { |
| final PsiFile usageFile = usageElement.getContainingFile(); |
| updateUsage(copy, (PyReferenceExpression)usageElement, usageFile, !usageFile.equals(file)); |
| } |
| } |
| } |
| |
| private static void updateUsage(@NotNull final PsiElement finalElement, @NotNull final PyReferenceExpression element, |
| @NotNull final PsiFile usageFile, boolean addImport) { |
| final PyExpression qualifier = element.getQualifier(); |
| if (qualifier == null) return; |
| if (qualifier.getText().equals(PyNames.CANONICAL_SELF)) PyUtil.removeQualifier(element); |
| if (qualifier instanceof PyCallExpression) { // remove qualifier A().m() |
| if (addImport) |
| AddImportHelper.addImport((PsiNamedElement)finalElement, usageFile, element); |
| |
| PyUtil.removeQualifier(element); |
| removeFormerImport(usageFile, addImport); |
| } |
| else { |
| final PsiReference reference = qualifier.getReference(); |
| if (reference == null) return; |
| |
| final PsiElement resolved = reference.resolve(); |
| if (resolved instanceof PyTargetExpression) { // qualifier came from assignment a = A(); a.m() |
| updateAssignment(element, resolved); |
| } |
| else if (resolved instanceof PyClass) { //call with first instance argument A.m(A()) |
| final PsiElement dot = qualifier.getNextSibling(); |
| if (dot != null) dot.delete(); |
| qualifier.delete(); |
| updateArgumentList(element); |
| } |
| } |
| } |
| |
| private static void removeFormerImport(@NotNull final PsiFile usageFile, boolean addImport) { |
| if (usageFile instanceof PyFile && addImport) { |
| final LocalInspectionToolSession session = new LocalInspectionToolSession(usageFile, 0, usageFile.getTextLength()); |
| final PyUnresolvedReferencesInspection.Visitor visitor = new PyUnresolvedReferencesInspection.Visitor(null, |
| session, |
| Collections.<String>emptyList()); |
| usageFile.accept(new PyRecursiveElementVisitor() { |
| @Override |
| public void visitPyElement(PyElement node) { |
| super.visitPyElement(node); |
| node.accept(visitor); |
| } |
| }); |
| |
| visitor.optimizeImports(); |
| } |
| } |
| |
| private static void updateAssignment(PyReferenceExpression element, @NotNull final PsiElement resolved) { |
| final PsiElement parent = resolved.getParent(); |
| if (parent instanceof PyAssignmentStatement) { |
| final PyExpression value = ((PyAssignmentStatement)parent).getAssignedValue(); |
| if (value instanceof PyCallExpression) { |
| final PyExpression callee = ((PyCallExpression)value).getCallee(); |
| if (callee instanceof PyReferenceExpression) { |
| final PyExpression calleeQualifier = ((PyReferenceExpression)callee).getQualifier(); |
| if (calleeQualifier != null) { |
| value.replace(calleeQualifier); |
| } |
| else { |
| PyUtil.removeQualifier(element); |
| } |
| } |
| } |
| } |
| } |
| |
| private static void updateArgumentList(@NotNull final PyReferenceExpression element) { |
| final PyCallExpression callExpression = PsiTreeUtil.getParentOfType(element, PyCallExpression.class); |
| if (callExpression == null) return; |
| PyArgumentList argumentList = callExpression.getArgumentList(); |
| if (argumentList == null) return; |
| final PyExpression[] arguments = argumentList.getArguments(); |
| if (arguments.length > 0) { |
| final PyExpression argument = arguments[0]; |
| PyUtil.eraseWhitespaceAndComma(argument.getParent().getNode(), argument, false); |
| argument.delete(); |
| } |
| } |
| } |