// changed API of IBinaryMethod (between Eclipse 4.5 and Eclipse 4.6)
// therefore adapting to this via reflection to use the correct existing method
private static IBinaryAnnotation[] getParameterAnnotation(
IBinaryMethod newMethod, int i, char[] fileName) {
IBinaryAnnotation[] result = null;
// try the old method first
try {
try {
Method getParameterAnnotationsMethod =
newMethod.getClass().getMethod("getParameterAnnotations", int.class);
if (getParameterAnnotationsMethod != null) {
getParameterAnnotationsMethod.setAccessible(true);
result = (IBinaryAnnotation[]) getParameterAnnotationsMethod.invoke(newMethod, i);
}
} catch (NoSuchMethodException e) {
// if the old method is not there, try the new one
Method getParameterAnnotationsMethod =
newMethod.getClass().getMethod("getParameterAnnotations", int.class, char[].class);
if (getParameterAnnotationsMethod != null) {
getParameterAnnotationsMethod.setAccessible(true);
result =
(IBinaryAnnotation[]) getParameterAnnotationsMethod.invoke(newMethod, i, fileName);
}
}
} catch (Exception e) {
SpringCore.log(e);
}
return result;
}
private static boolean parameterAnnotationsEquals(
IBinaryMethod newMethod, IBinaryMethod existingMethod, char[] fileName, int flags) {
char[][] argumentNames = newMethod.getArgumentNames();
char[][] existingArgumentNames = existingMethod.getArgumentNames();
if (argumentNames == null && existingArgumentNames == null) return true;
int argumentCount = argumentNames != null ? argumentNames.length : 0;
int existingArgumentCount = existingArgumentNames != null ? existingArgumentNames.length : 0;
if (argumentCount != existingArgumentCount) return false;
for (int i = 0; i < argumentCount; i++) {
IBinaryAnnotation[] parameterAnnotations = getParameterAnnotation(newMethod, i, fileName);
IBinaryAnnotation[] existingParameterAnnotations =
getParameterAnnotation(existingMethod, i, fileName);
if (!annotationsEqual(parameterAnnotations, existingParameterAnnotations, flags)) {
return false;
}
}
return true;
}
boolean matchMethod(MethodPattern pattern, Object binaryInfo, IBinaryType enclosingBinaryType) {
if (!pattern.findDeclarations) return false; // only relevant when finding declarations
if (!(binaryInfo instanceof IBinaryMethod)) return false;
IBinaryMethod method = (IBinaryMethod) binaryInfo;
if (!pattern.matchesName(pattern.selector, method.getSelector())) return false;
if (!checkDeclaringType(
enclosingBinaryType,
pattern.declaringSimpleName,
pattern.declaringQualification,
pattern.isCaseSensitive(),
pattern.isCamelCase())) return false;
// look at return type only if declaring type is not specified
boolean checkReturnType =
pattern.declaringSimpleName == null
&& (pattern.returnSimpleName != null || pattern.returnQualification != null);
boolean checkParameters = pattern.parameterSimpleNames != null;
if (checkReturnType || checkParameters) {
char[] methodDescriptor = convertClassFileFormat(method.getMethodDescriptor());
if (checkReturnType) {
char[] returnTypeSignature =
Signature.toCharArray(Signature.getReturnType(methodDescriptor));
if (!checkTypeName(
pattern.returnSimpleName,
pattern.returnQualification,
returnTypeSignature,
pattern.isCaseSensitive(),
pattern.isCamelCase())) return false;
}
if (checkParameters
&& !checkParameters(
methodDescriptor,
pattern.parameterSimpleNames,
pattern.parameterQualifications,
pattern.isCaseSensitive(),
pattern.isCamelCase())) return false;
}
return true;
}
boolean matchConstructor(
ConstructorPattern pattern, Object binaryInfo, IBinaryType enclosingBinaryType) {
if (!pattern.findDeclarations) return false; // only relevant when finding declarations
if (!(binaryInfo instanceof IBinaryMethod)) return false;
IBinaryMethod method = (IBinaryMethod) binaryInfo;
if (!method.isConstructor()) return false;
if (!checkDeclaringType(
enclosingBinaryType,
pattern.declaringSimpleName,
pattern.declaringQualification,
pattern.isCaseSensitive(),
pattern.isCamelCase())) return false;
if (pattern.parameterSimpleNames != null) {
char[] methodDescriptor = convertClassFileFormat(method.getMethodDescriptor());
if (!checkParameters(
methodDescriptor,
pattern.parameterSimpleNames,
pattern.parameterQualifications,
pattern.isCaseSensitive(),
pattern.isCamelCase())) return false;
}
return true;
}
private boolean hasStructuralChanges(
ClassFileReader reader, TypeStructure existingType, int flags) {
if (existingType == null) {
return true;
}
// modifiers
if (!modifiersEqual(reader.getModifiers(), existingType.modifiers)) {
return true;
}
// generic signature
if (!CharOperation.equals(reader.getGenericSignature(), existingType.genericSignature)) {
return true;
}
// superclass name
if (!CharOperation.equals(reader.getSuperclassName(), existingType.superclassName)) {
return true;
}
// class level annotations
if ((flags & FLAG_ANNOTATION) != 0) {
IBinaryAnnotation[] existingAnnotations = existingType.getAnnotations();
IBinaryAnnotation[] newAnnotations = reader.getAnnotations();
if (!annotationsEqual(existingAnnotations, newAnnotations, flags)) {
return true;
}
}
// tag bits; standard annotations like @Deprecated
if (reader.getTagBits() != existingType.getTagBits()) {
return true;
}
// interfaces
char[][] existingIfs = existingType.interfaces;
char[][] newIfsAsChars = reader.getInterfaceNames();
if (newIfsAsChars == null) {
newIfsAsChars = EMPTY_CHAR_ARRAY;
} // damn I'm lazy...
if (existingIfs == null) {
existingIfs = EMPTY_CHAR_ARRAY;
}
if (existingIfs.length != newIfsAsChars.length) return true;
new_interface_loop:
for (int i = 0; i < newIfsAsChars.length; i++) {
for (int j = 0; j < existingIfs.length; j++) {
if (CharOperation.equals(existingIfs[j], newIfsAsChars[i])) {
continue new_interface_loop;
}
}
return true;
}
// fields
IBinaryField[] newFields = reader.getFields();
if (newFields == null) {
newFields = TypeStructure.NoField;
}
IBinaryField[] existingFs = existingType.binFields;
if (newFields.length != existingFs.length) return true;
new_field_loop:
for (int i = 0; i < newFields.length; i++) {
IBinaryField field = newFields[i];
char[] fieldName = field.getName();
for (int j = 0; j < existingFs.length; j++) {
if (CharOperation.equals(existingFs[j].getName(), fieldName)) {
if (!modifiersEqual(field.getModifiers(), existingFs[j].getModifiers())) {
return true;
}
if (!CharOperation.equals(existingFs[j].getTypeName(), field.getTypeName())) {
return true;
}
if ((flags & FLAG_ANNOTATION) != 0) {
if (!annotationsEqual(field.getAnnotations(), existingFs[j].getAnnotations(), flags)) {
return true;
}
}
continue new_field_loop;
}
}
return true;
}
// methods
IBinaryMethod[] newMethods = reader.getMethods();
if (newMethods == null) {
newMethods = TypeStructure.NoMethod;
}
char[] fileName = reader.getFileName();
IBinaryMethod[] existingMs = existingType.binMethods;
if (newMethods.length != existingMs.length) return true;
new_method_loop:
for (int i = 0; i < newMethods.length; i++) {
IBinaryMethod method = newMethods[i];
char[] methodName = method.getSelector();
for (int j = 0; j < existingMs.length; j++) {
if (CharOperation.equals(existingMs[j].getSelector(), methodName)) {
// candidate match
if (!CharOperation.equals(
method.getMethodDescriptor(), existingMs[j].getMethodDescriptor())) {
continue; // might be overloading
} else {
// matching sigs
if (!modifiersEqual(method.getModifiers(), existingMs[j].getModifiers())) {
return true;
}
if ((flags & FLAG_ANNOTATION) != 0) {
if (!annotationsEqual(
method.getAnnotations(), existingMs[j].getAnnotations(), flags)) {
return true;
}
if (!parameterAnnotationsEquals(method, existingMs[j], fileName, flags)) {
return true;
}
}
continue new_method_loop;
}
}
}
return true; // (no match found)
}
return false;
}
/** Locate declaration in the current class file. This class file is always in a jar. */
public void locateMatches(MatchLocator locator, ClassFile classFile, IBinaryType info)
throws CoreException {
SearchPattern pattern = locator.pattern;
// check annotations references
matchAnnotations(pattern, locator, classFile, info);
// check class definition
BinaryType binaryType = (BinaryType) classFile.getType();
if (matchBinary(pattern, info, null)) {
binaryType =
new ResolvedBinaryType(
(JavaElement) binaryType.getParent(),
binaryType.getElementName(),
binaryType.getKey());
locator.reportBinaryMemberDeclaration(null, binaryType, null, info, SearchMatch.A_ACCURATE);
return;
}
// Define arrays to store methods/fields from binary type if necessary
IBinaryMethod[] binaryMethods = info.getMethods();
int bMethodsLength = binaryMethods == null ? 0 : binaryMethods.length;
IBinaryMethod[] unresolvedMethods = null;
char[][] binaryMethodSignatures = null;
boolean hasUnresolvedMethods = false;
// Get fields from binary type info
IBinaryField[] binaryFields = info.getFields();
int bFieldsLength = binaryFields == null ? 0 : binaryFields.length;
IBinaryField[] unresolvedFields = null;
boolean hasUnresolvedFields = false;
// Report as many accurate matches as possible
int accuracy = SearchMatch.A_ACCURATE;
boolean mustResolve = pattern.mustResolve;
if (mustResolve) {
BinaryTypeBinding binding = locator.cacheBinaryType(binaryType, info);
if (binding != null) {
// filter out element not in hierarchy scope
if (!locator.typeInHierarchy(binding)) return;
// Search matches on resolved methods
MethodBinding[] availableMethods = binding.availableMethods();
int aMethodsLength = availableMethods == null ? 0 : availableMethods.length;
hasUnresolvedMethods = bMethodsLength != aMethodsLength;
for (int i = 0; i < aMethodsLength; i++) {
MethodBinding method = availableMethods[i];
char[] methodSignature = method.genericSignature();
if (methodSignature == null) methodSignature = method.signature();
// Report the match if possible
int level = locator.patternLocator.resolveLevel(method);
if (level != PatternLocator.IMPOSSIBLE_MATCH) {
IMethod methodHandle =
binaryType.getMethod(
new String(
method.isConstructor()
? binding.compoundName[binding.compoundName.length - 1]
: method.selector),
CharOperation.toStrings(
Signature.getParameterTypes(convertClassFileFormat(methodSignature))));
accuracy =
level == PatternLocator.ACCURATE_MATCH
? SearchMatch.A_ACCURATE
: SearchMatch.A_INACCURATE;
locator.reportBinaryMemberDeclaration(null, methodHandle, method, info, accuracy);
}
// Remove method from unresolved list
if (hasUnresolvedMethods) {
if (binaryMethodSignatures
== null) { // Store binary method signatures to avoid multiple computation
binaryMethodSignatures = new char[bMethodsLength][];
for (int j = 0; j < bMethodsLength; j++) {
IBinaryMethod binaryMethod = binaryMethods[j];
char[] signature = binaryMethod.getGenericSignature();
if (signature == null) signature = binaryMethod.getMethodDescriptor();
binaryMethodSignatures[j] = signature;
}
}
for (int j = 0; j < bMethodsLength; j++) {
if (CharOperation.equals(binaryMethods[j].getSelector(), method.selector)
&& CharOperation.equals(binaryMethodSignatures[j], methodSignature)) {
if (unresolvedMethods == null) {
System.arraycopy(
binaryMethods,
0,
unresolvedMethods = new IBinaryMethod[bMethodsLength],
0,
bMethodsLength);
}
unresolvedMethods[j] = null;
break;
}
}
}
}
// Search matches on resolved fields
FieldBinding[] availableFields = binding.availableFields();
int aFieldsLength = availableFields == null ? 0 : availableFields.length;
hasUnresolvedFields = bFieldsLength != aFieldsLength;
for (int i = 0; i < aFieldsLength; i++) {
FieldBinding field = availableFields[i];
// Report the match if possible
int level = locator.patternLocator.resolveLevel(field);
if (level != PatternLocator.IMPOSSIBLE_MATCH) {
IField fieldHandle = binaryType.getField(new String(field.name));
accuracy =
level == PatternLocator.ACCURATE_MATCH
? SearchMatch.A_ACCURATE
: SearchMatch.A_INACCURATE;
locator.reportBinaryMemberDeclaration(null, fieldHandle, field, info, accuracy);
}
// Remove the field from unresolved list
if (hasUnresolvedFields) {
for (int j = 0; j < bFieldsLength; j++) {
if (CharOperation.equals(binaryFields[j].getName(), field.name)) {
if (unresolvedFields == null) {
System.arraycopy(
binaryFields,
0,
unresolvedFields = new IBinaryField[bFieldsLength],
0,
bFieldsLength);
}
unresolvedFields[j] = null;
break;
}
}
}
}
// If all methods/fields were accurate then returns now
if (!hasUnresolvedMethods && !hasUnresolvedFields) {
return;
}
}
accuracy = SearchMatch.A_INACCURATE;
}
// Report inaccurate methods
if (mustResolve) binaryMethods = unresolvedMethods;
bMethodsLength = binaryMethods == null ? 0 : binaryMethods.length;
for (int i = 0; i < bMethodsLength; i++) {
IBinaryMethod method = binaryMethods[i];
if (method == null) continue; // impossible match or already reported as accurate
if (matchBinary(pattern, method, info)) {
char[] name;
if (method.isConstructor()) {
name = info.getName();
int lastSlash = CharOperation.lastIndexOf('/', name);
if (lastSlash != -1) {
name = CharOperation.subarray(name, lastSlash + 1, name.length);
}
} else {
name = method.getSelector();
}
String selector = new String(name);
char[] methodSignature = binaryMethodSignatures == null ? null : binaryMethodSignatures[i];
if (methodSignature == null) {
methodSignature = method.getGenericSignature();
if (methodSignature == null) methodSignature = method.getMethodDescriptor();
}
String[] parameterTypes =
CharOperation.toStrings(
Signature.getParameterTypes(convertClassFileFormat(methodSignature)));
IMethod methodHandle = binaryType.getMethod(selector, parameterTypes);
methodHandle =
new ResolvedBinaryMethod(binaryType, selector, parameterTypes, methodHandle.getKey());
locator.reportBinaryMemberDeclaration(null, methodHandle, null, info, accuracy);
}
}
// Report inaccurate fields
if (mustResolve) binaryFields = unresolvedFields;
bFieldsLength = binaryFields == null ? 0 : binaryFields.length;
for (int i = 0; i < bFieldsLength; i++) {
IBinaryField field = binaryFields[i];
if (field == null) continue; // impossible match or already reported as accurate
if (matchBinary(pattern, field, info)) {
String fieldName = new String(field.getName());
IField fieldHandle = binaryType.getField(fieldName);
fieldHandle = new ResolvedBinaryField(binaryType, fieldName, fieldHandle.getKey());
locator.reportBinaryMemberDeclaration(null, fieldHandle, null, info, accuracy);
}
}
}