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1
11 package org.eclipse.jdt.internal.corext.refactoring.rename;
12
13 import org.eclipse.core.runtime.Assert;
14 import org.eclipse.core.runtime.CoreException;
15 import org.eclipse.core.runtime.IProgressMonitor;
16 import org.eclipse.core.runtime.SubProgressMonitor;
17
18 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
19 import org.eclipse.ltk.core.refactoring.RefactoringStatusContext;
20
21 import org.eclipse.jdt.core.IMethod;
22 import org.eclipse.jdt.core.IType;
23 import org.eclipse.jdt.core.ITypeHierarchy;
24 import org.eclipse.jdt.core.JavaModelException;
25 import org.eclipse.jdt.core.dom.IMethodBinding;
26 import org.eclipse.jdt.core.dom.Modifier;
27
28 import org.eclipse.jdt.internal.corext.Corext;
29 import org.eclipse.jdt.internal.corext.refactoring.Checks;
30 import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages;
31 import org.eclipse.jdt.internal.corext.refactoring.base.JavaStatusContext;
32 import org.eclipse.jdt.internal.corext.refactoring.base.RefactoringStatusCodes;
33 import org.eclipse.jdt.internal.corext.refactoring.util.JavaElementUtil;
34 import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
35 import org.eclipse.jdt.internal.corext.util.JdtFlags;
36 import org.eclipse.jdt.internal.corext.util.Messages;
37 import org.eclipse.jdt.internal.corext.util.MethodOverrideTester;
38
39 public class MethodChecks {
40
41 private MethodChecks(){
43 }
44
45 public static boolean isVirtual(IMethod method) throws JavaModelException {
46 if (method.isConstructor())
47 return false;
48 if (JdtFlags.isPrivate(method))
49 return false;
50 if (JdtFlags.isStatic(method))
51 return false;
52 return true;
53 }
54
55 public static boolean isVirtual(IMethodBinding methodBinding){
56 if (methodBinding.isConstructor())
57 return false;
58 if (Modifier.isPrivate(methodBinding.getModifiers())) return false;
60 if (Modifier.isStatic(methodBinding.getModifiers())) return false;
62 return true;
63 }
64
65 public static RefactoringStatus checkIfOverridesAnother(IMethod method, ITypeHierarchy hierarchy) throws JavaModelException {
66 IMethod overrides= MethodChecks.overridesAnotherMethod(method, hierarchy);
67 if (overrides == null)
68 return null;
69
70 RefactoringStatusContext context= JavaStatusContext.create(overrides);
71 String  message= Messages.format(RefactoringCoreMessages.MethodChecks_overrides,
72 new String []{JavaElementUtil.createMethodSignature(overrides), JavaModelUtil.getFullyQualifiedName(overrides.getDeclaringType())});
73 return RefactoringStatus.createStatus(RefactoringStatus.FATAL, message, context, Corext.getPluginId(), RefactoringStatusCodes.OVERRIDES_ANOTHER_METHOD, overrides);
74 }
75
76
81 public static RefactoringStatus checkIfComesFromInterface(IMethod method, ITypeHierarchy hierarchy, IProgressMonitor monitor) throws JavaModelException {
82 IMethod inInterface= MethodChecks.isDeclaredInInterface(method, hierarchy, monitor);
83
84 if (inInterface == null)
85 return null;
86
87 RefactoringStatusContext context= JavaStatusContext.create(inInterface);
88 String message= Messages.format(RefactoringCoreMessages.MethodChecks_implements,
89 new String []{JavaElementUtil.createMethodSignature(inInterface), JavaModelUtil.getFullyQualifiedName(inInterface.getDeclaringType())});
90 return RefactoringStatus.createStatus(RefactoringStatus.FATAL, message, context, Corext.getPluginId(), RefactoringStatusCodes.METHOD_DECLARED_IN_INTERFACE, inInterface);
91 }
92
93
98 public static IMethod isDeclaredInInterface(IMethod method, ITypeHierarchy hierarchy, IProgressMonitor monitor) throws JavaModelException {
99 Assert.isTrue(isVirtual(method));
100 IProgressMonitor subMonitor= new SubProgressMonitor(monitor, 1);
101 try {
102 IType[] classes= hierarchy.getAllClasses();
103 subMonitor.beginTask("", classes.length); for (int i= 0; i < classes.length; i++) {
105 final IType clazz= classes[i];
106 IType[] superinterfaces= null;
107 if (clazz.equals(hierarchy.getType()))
108 superinterfaces= hierarchy.getAllSuperInterfaces(clazz);
109 else
110 superinterfaces= clazz.newSupertypeHierarchy(new SubProgressMonitor(subMonitor, 1)).getAllSuperInterfaces(clazz);
111 for (int j= 0; j < superinterfaces.length; j++) {
112 IMethod found= Checks.findSimilarMethod(method, superinterfaces[j]);
113 if (found != null && !found.equals(method))
114 return found;
115 }
116 subMonitor.worked(1);
117 }
118 return null;
119 } finally {
120 subMonitor.done();
121 }
122 }
123
124 public static IMethod overridesAnotherMethod(IMethod method, ITypeHierarchy hierarchy) throws JavaModelException {
125 MethodOverrideTester tester= new MethodOverrideTester(method.getDeclaringType(), hierarchy);
126 IMethod found= tester.findDeclaringMethod(method, true);
127 boolean overrides= (found != null && !found.equals(method) && (!JdtFlags.isStatic(found)) && (!JdtFlags.isPrivate(found)));
128 if (overrides)
129 return found;
130 else
131 return null;
132 }
133
134
144 public static IMethod getTopmostMethod(IMethod method, ITypeHierarchy typeHierarchy, IProgressMonitor monitor) throws JavaModelException {
145
146 Assert.isNotNull(method);
147
148 ITypeHierarchy hierarchy= typeHierarchy;
149 IMethod topmostMethod= null;
150 final IType declaringType= method.getDeclaringType();
151 if (!declaringType.isInterface()) {
152 if ((hierarchy == null) || !declaringType.equals(hierarchy.getType()))
153 hierarchy= declaringType.newTypeHierarchy(monitor);
154
155 IMethod inInterface= isDeclaredInInterface(method, hierarchy, monitor);
156 if (inInterface != null && !inInterface.equals(method))
157 topmostMethod= inInterface;
158 }
159 if (topmostMethod == null) {
160 if (hierarchy == null)
161 hierarchy= declaringType.newSupertypeHierarchy(monitor);
162 IMethod overrides= overridesAnotherMethod(method, hierarchy);
163 if (overrides != null && !overrides.equals(method))
164 topmostMethod= overrides;
165 }
166 return topmostMethod;
167 }
168
169
173 public static IMethod[] getOverriddenMethods(IMethod method, IProgressMonitor monitor) throws CoreException {
174
175 Assert.isNotNull(method);
176 return RippleMethodFinder2.getRelatedMethods(method, monitor, null);
177 }
178 }
179 |
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