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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contributions for
* bug 349326 - [1.7] new warning for missing try-with-resources
* bug 186342 - [compiler][null] Using annotations for null checking
* bug 365519 - editorial cleanup after bug 186342 and bug 365387
* bug 358903 - Filter practically unimportant resource leak warnings
* bug 365531 - [compiler][null] investigate alternative strategy for internally encoding nullness defaults
* bug 388281 - [compiler][null] inheritance of null annotations as an option
* bug 395002 - Self bound generic class doesn't resolve bounds properly for wildcards for certain parametrisation.
* bug 392862 - [1.8][compiler][null] Evaluate null annotations on array types
* bug 400421 - [compiler] Null analysis for fields does not take @com.google.inject.Inject into account
* bug 382069 - [null] Make the null analysis consider JUnit's assertNotNull similarly to assertions
* bug 392384 - [1.8][compiler][null] Restore nullness info from type annotations in class files
* Bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis
* Bug 415291 - [1.8][null] differentiate type incompatibilities due to null annotations
* Bug 415043 - [1.8][null] Follow-up re null type annotations after bug 392099
* Bug 416176 - [1.8][compiler][null] null type annotations cause grief on type variables
* Bug 400874 - [1.8][compiler] Inference infrastructure should evolve to meet JLS8 18.x (Part G of JSR335 spec)
* Bug 423504 - [1.8] Implement "18.5.3 Functional Interface Parameterization Inference"
* Bug 426792 - [1.8][inference][impl] generify new type inference engine
* Bug 428019 - [1.8][compiler] Type inference failure with nested generic invocation.
* Bug 427199 - [1.8][resource] avoid resource leak warnings on Streams that have no resource
* Bug 418743 - [1.8][null] contradictory annotations on invocation of generic method not reported
* Bug 429958 - [1.8][null] evaluate new DefaultLocation attribute of @NonNullByDefault
* Bug 431581 - Eclipse compiles what it should not
* Bug 440759 - [1.8][null] @NonNullByDefault should never affect wildcards and uses of a type variable
* Bug 452788 - [1.8][compiler] Type not correctly inferred in lambda expression
* Bug 446442 - [1.8] merge null annotations from super methods
* Bug 456532 - [1.8][null] ReferenceBinding.appendNullAnnotation() includes phantom annotations in error messages
* Jesper S Moller - Contributions for
* bug 382701 - [1.8][compiler] Implement semantic analysis of Lambda expressions & Reference expression
* bug 412153 - [1.8][compiler] Check validity of annotations which may be repeatable
* Ulrich Grave - Contributions for
* bug 386692 - Missing "unused" warning on "autowired" fields
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;
import java.util.Arrays;
import java.util.Comparator;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.core.compiler.InvalidInputException;
import org.eclipse.jdt.internal.compiler.ast.LambdaExpression;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.NullAnnotationMatching;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.impl.ReferenceContext;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
/*
Not all fields defined by this type (& its subclasses) are initialized when it is created.
Some are initialized only when needed.
Accessors have been provided for some public fields so all TypeBindings have the same API...
but access public fields directly whenever possible.
Non-public fields have accessors which should be used everywhere you expect the field to be initialized.
null is NOT a valid value for a non-public field... it just means the field is not initialized.
*/
abstract public class ReferenceBinding extends TypeBinding {
public char[][] compoundName;
public char[] sourceName;
public int modifiers;
public PackageBinding fPackage;
char[] fileName;
char[] constantPoolName;
char[] signature;
private SimpleLookupTable compatibleCache;
int typeBits; // additional bits characterizing this type
protected MethodBinding [] singleAbstractMethod;
public static final ReferenceBinding LUB_GENERIC = new ReferenceBinding() { /* used for lub computation */
{ this.id = TypeIds.T_undefined; }
public boolean hasTypeBit(int bit) { return false; }
};
private static final Comparator FIELD_COMPARATOR = new Comparator() {
public int compare(FieldBinding o1, FieldBinding o2) {
char[] n1 = o1.name;
char[] n2 = o2.name;
return ReferenceBinding.compare(n1, n2, n1.length, n2.length);
}
};
private static final Comparator METHOD_COMPARATOR = new Comparator() {
public int compare(MethodBinding o1, MethodBinding o2) {
MethodBinding m1 = o1;
MethodBinding m2 = o2;
char[] s1 = m1.selector;
char[] s2 = m2.selector;
int c = ReferenceBinding.compare(s1, s2, s1.length, s2.length);
return c == 0 ? m1.parameters.length - m2.parameters.length : c;
}
};
static protected ProblemMethodBinding samProblemBinding = new ProblemMethodBinding(TypeConstants.ANONYMOUS_METHOD, null, ProblemReasons.NoSuchSingleAbstractMethod);
public ReferenceBinding(ReferenceBinding prototype) {
super(prototype);
this.compoundName = prototype.compoundName;
this.sourceName = prototype.sourceName;
this.modifiers = prototype.modifiers;
this.fPackage = prototype.fPackage;
this.fileName = prototype.fileName;
this.constantPoolName = prototype.constantPoolName;
this.signature = prototype.signature;
this.compatibleCache = prototype.compatibleCache;
this.typeBits = prototype.typeBits;
this.singleAbstractMethod = prototype.singleAbstractMethod;
}
public ReferenceBinding() {
super();
}
public static FieldBinding binarySearch(char[] name, FieldBinding[] sortedFields) {
if (sortedFields == null)
return null;
int max = sortedFields.length;
if (max == 0)
return null;
int left = 0, right = max - 1, nameLength = name.length;
int mid = 0;
char[] midName;
while (left <= right) {
mid = left + (right - left) /2;
int compare = compare(name, midName = sortedFields[mid].name, nameLength, midName.length);
if (compare < 0) {
right = mid-1;
} else if (compare > 0) {
left = mid+1;
} else {
return sortedFields[mid];
}
}
return null;
}
/**
* Returns a combined range value representing: (start + (end<<32)), where start is the index of the first matching method
* (remember methods are sorted alphabetically on selectors), and end is the index of last contiguous methods with same
* selector.
* -1 means no method got found
* @param selector
* @param sortedMethods
* @return (start + (end<<32)) or -1 if no method found
*/
public static long binarySearch(char[] selector, MethodBinding[] sortedMethods) {
if (sortedMethods == null)
return -1;
int max = sortedMethods.length;
if (max == 0)
return -1;
int left = 0, right = max - 1, selectorLength = selector.length;
int mid = 0;
char[] midSelector;
while (left <= right) {
mid = left + (right - left) /2;
int compare = compare(selector, midSelector = sortedMethods[mid].selector, selectorLength, midSelector.length);
if (compare < 0) {
right = mid-1;
} else if (compare > 0) {
left = mid+1;
} else {
int start = mid, end = mid;
// find first method with same selector
while (start > left && CharOperation.equals(sortedMethods[start-1].selector, selector)){ start--; }
// find last method with same selector
while (end < right && CharOperation.equals(sortedMethods[end+1].selector, selector)){ end++; }
return start + ((long)end<< 32);
}
}
return -1;
}
/**
* Compares two strings lexicographically.
* The comparison is based on the Unicode value of each character in
* the strings.
*
* @return the value 0 if the str1 is equal to str2;
* a value less than 0 if str1
* is lexicographically less than str2;
* and a value greater than 0 if str1 is
* lexicographically greater than str2.
*/
static int compare(char[] str1, char[] str2, int len1, int len2) {
int n= Math.min(len1, len2);
int i= 0;
while (n-- != 0) {
char c1= str1[i];
char c2= str2[i++];
if (c1 != c2) {
return c1 - c2;
}
}
return len1 - len2;
}
/**
* Sort the field array using a quicksort
*/
public static void sortFields(FieldBinding[] sortedFields, int left, int right) {
Arrays.sort(sortedFields, left, right, FIELD_COMPARATOR);
}
/**
* Sort the field array using a quicksort
*/
public static void sortMethods(MethodBinding[] sortedMethods, int left, int right) {
Arrays.sort(sortedMethods, left, right, METHOD_COMPARATOR);
}
/**
* Return the array of resolvable fields (resilience)
*/
public FieldBinding[] availableFields() {
return fields();
}
/**
* Return the array of resolvable methods (resilience)
*/
public MethodBinding[] availableMethods() {
return methods();
}
/**
* Answer true if the receiver can be instantiated
*/
public boolean canBeInstantiated() {
return (this.modifiers & (ClassFileConstants.AccAbstract | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) == 0;
}
/**
* Answer true if the receiver is visible to the invocationPackage.
*/
public boolean canBeSeenBy(PackageBinding invocationPackage) {
if (isPublic()) return true;
if (isPrivate()) return false;
// isProtected() or isDefault()
return invocationPackage == this.fPackage;
}
/**
* Answer true if the receiver is visible to the receiverType and the invocationType.
*/
public boolean canBeSeenBy(ReferenceBinding receiverType, ReferenceBinding invocationType) {
if (isPublic()) return true;
if (TypeBinding.equalsEquals(invocationType, this) && TypeBinding.equalsEquals(invocationType, receiverType)) return true;
if (isProtected()) {
// answer true if the invocationType is the declaringClass or they are in the same package
// OR the invocationType is a subclass of the declaringClass
// AND the invocationType is the invocationType or its subclass
// OR the type is a static method accessed directly through a type
// OR previous assertions are true for one of the enclosing type
if (TypeBinding.equalsEquals(invocationType, this)) return true;
if (invocationType.fPackage == this.fPackage) return true;
TypeBinding currentType = invocationType.erasure();
TypeBinding declaringClass = enclosingType().erasure(); // protected types always have an enclosing one
if (TypeBinding.equalsEquals(declaringClass, invocationType)) return true;
if (declaringClass == null) return false; // could be null if incorrect top-level protected type
//int depth = 0;
do {
if (currentType.findSuperTypeOriginatingFrom(declaringClass) != null) return true;
//depth++;
currentType = currentType.enclosingType();
} while (currentType != null);
return false;
}
if (isPrivate()) {
// answer true if the receiverType is the receiver or its enclosingType
// AND the invocationType and the receiver have a common enclosingType
receiverCheck: {
if (!(TypeBinding.equalsEquals(receiverType, this) || TypeBinding.equalsEquals(receiverType, enclosingType()))) {
// special tolerance for type variable direct bounds, but only if compliance <= 1.6, see: https://bugs.eclipse.org/bugs/show_bug.cgi?id=334622
if (receiverType.isTypeVariable()) {
TypeVariableBinding typeVariable = (TypeVariableBinding) receiverType;
if (typeVariable.environment.globalOptions.complianceLevel <= ClassFileConstants.JDK1_6 && (typeVariable.isErasureBoundTo(erasure()) || typeVariable.isErasureBoundTo(enclosingType().erasure())))
break receiverCheck;
}
return false;
}
}
if (TypeBinding.notEquals(invocationType, this)) {
ReferenceBinding outerInvocationType = invocationType;
ReferenceBinding temp = outerInvocationType.enclosingType();
while (temp != null) {
outerInvocationType = temp;
temp = temp.enclosingType();
}
ReferenceBinding outerDeclaringClass = (ReferenceBinding)erasure();
temp = outerDeclaringClass.enclosingType();
while (temp != null) {
outerDeclaringClass = temp;
temp = temp.enclosingType();
}
if (TypeBinding.notEquals(outerInvocationType, outerDeclaringClass)) return false;
}
return true;
}
// isDefault()
if (invocationType.fPackage != this.fPackage) return false;
ReferenceBinding currentType = receiverType;
TypeBinding originalDeclaringClass = (enclosingType() == null ? this : enclosingType()).original();
do {
if (currentType.isCapture()) { // https://bugs.eclipse.org/bugs/show_bug.cgi?id=285002
if (TypeBinding.equalsEquals(originalDeclaringClass, currentType.erasure().original())) return true;
} else {
if (TypeBinding.equalsEquals(originalDeclaringClass, currentType.original())) return true;
}
PackageBinding currentPackage = currentType.fPackage;
// package could be null for wildcards/intersection types, ignore and recurse in superclass
if (currentPackage != null && currentPackage != this.fPackage) return false;
} while ((currentType = currentType.superclass()) != null);
return false;
}
/**
* Answer true if the receiver is visible to the type provided by the scope.
*/
public boolean canBeSeenBy(Scope scope) {
if (isPublic()) return true;
SourceTypeBinding invocationType = scope.enclosingSourceType();
if (TypeBinding.equalsEquals(invocationType, this)) return true;
if (invocationType == null) // static import call
return !isPrivate() && scope.getCurrentPackage() == this.fPackage;
if (isProtected()) {
// answer true if the invocationType is the declaringClass or they are in the same package
// OR the invocationType is a subclass of the declaringClass
// AND the invocationType is the invocationType or its subclass
// OR the type is a static method accessed directly through a type
// OR previous assertions are true for one of the enclosing type
if (invocationType.fPackage == this.fPackage) return true;
TypeBinding declaringClass = enclosingType(); // protected types always have an enclosing one
if (declaringClass == null) return false; // could be null if incorrect top-level protected type
declaringClass = declaringClass.erasure();// erasure cannot be null
TypeBinding currentType = invocationType.erasure();
// int depth = 0;
do {
if (TypeBinding.equalsEquals(declaringClass, invocationType)) return true;
if (currentType.findSuperTypeOriginatingFrom(declaringClass) != null) return true;
// depth++;
currentType = currentType.enclosingType();
} while (currentType != null);
return false;
}
if (isPrivate()) {
// answer true if the receiver and the invocationType have a common enclosingType
// already know they are not the identical type
ReferenceBinding outerInvocationType = invocationType;
ReferenceBinding temp = outerInvocationType.enclosingType();
while (temp != null) {
outerInvocationType = temp;
temp = temp.enclosingType();
}
ReferenceBinding outerDeclaringClass = (ReferenceBinding)erasure();
temp = outerDeclaringClass.enclosingType();
while (temp != null) {
outerDeclaringClass = temp;
temp = temp.enclosingType();
}
return TypeBinding.equalsEquals(outerInvocationType, outerDeclaringClass);
}
// isDefault()
return invocationType.fPackage == this.fPackage;
}
public char[] computeGenericTypeSignature(TypeVariableBinding[] typeVariables) {
boolean isMemberOfGeneric = isMemberType() && (enclosingType().modifiers & ExtraCompilerModifiers.AccGenericSignature) != 0;
if (typeVariables == Binding.NO_TYPE_VARIABLES && !isMemberOfGeneric) {
return signature();
}
StringBuffer sig = new StringBuffer(10);
if (isMemberOfGeneric) {
char[] typeSig = enclosingType().genericTypeSignature();
sig.append(typeSig, 0, typeSig.length-1); // copy all but trailing semicolon
sig.append('.'); // NOTE: cannot override trailing ';' with '.' in enclosing signature, since shared char[]
sig.append(this.sourceName);
} else {
char[] typeSig = signature();
sig.append(typeSig, 0, typeSig.length-1); // copy all but trailing semicolon
}
if (typeVariables == Binding.NO_TYPE_VARIABLES) {
sig.append(';');
} else {
sig.append('<');
for (int i = 0, length = typeVariables.length; i < length; i++) {
sig.append(typeVariables[i].genericTypeSignature());
}
sig.append(">;"); //$NON-NLS-1$
}
int sigLength = sig.length();
char[] result = new char[sigLength];
sig.getChars(0, sigLength, result, 0);
return result;
}
public void computeId() {
// note that more (configurable) ids are assigned from PackageBinding#checkIfNullAnnotationType()
// try to avoid multiple checks against a package/type name
switch (this.compoundName.length) {
case 3 :
char[] packageName = this.compoundName[0];
// expect only java.*.* and javax.*.* and junit.*.* and org.junit.*
switch (packageName.length) {
case 3: // only one type in this group, yet:
if (CharOperation.equals(TypeConstants.ORG_JUNIT_ASSERT, this.compoundName))
this.id = TypeIds.T_OrgJunitAssert;
return;
case 4:
if (!CharOperation.equals(TypeConstants.JAVA, packageName))
return;
break; // continue below ...
case 5:
switch (packageName[1]) {
case 'a':
if (CharOperation.equals(TypeConstants.JAVAX_ANNOTATION_INJECT_INJECT, this.compoundName))
this.id = TypeIds.T_JavaxInjectInject;
return;
case 'u':
if (CharOperation.equals(TypeConstants.JUNIT_FRAMEWORK_ASSERT, this.compoundName))
this.id = TypeIds.T_JunitFrameworkAssert;
return;
}
return;
default: return;
}
// ... at this point we know it's java.*.*
packageName = this.compoundName[1];
if (packageName.length == 0) return; // just to be safe
char[] typeName = this.compoundName[2];
if (typeName.length == 0) return; // just to be safe
// remaining types MUST be in java.*.*
if (!CharOperation.equals(TypeConstants.LANG, this.compoundName[1])) {
switch (packageName[0]) {
case 'i' :
if (CharOperation.equals(packageName, TypeConstants.IO)) {
switch (typeName[0]) {
case 'C' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_CLOSEABLE[2]))
this.typeBits |= TypeIds.BitCloseable; // don't assign id, only typeBit (for analysis of resource leaks)
return;
case 'E' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_EXTERNALIZABLE[2]))
this.id = TypeIds.T_JavaIoExternalizable;
return;
case 'I' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_IOEXCEPTION[2]))
this.id = TypeIds.T_JavaIoException;
return;
case 'O' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_OBJECTSTREAMEXCEPTION[2]))
this.id = TypeIds.T_JavaIoObjectStreamException;
return;
case 'P' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_PRINTSTREAM[2]))
this.id = TypeIds.T_JavaIoPrintStream;
return;
case 'S' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_IO_SERIALIZABLE[2]))
this.id = TypeIds.T_JavaIoSerializable;
return;
}
}
return;
case 'u' :
if (CharOperation.equals(packageName, TypeConstants.UTIL)) {
switch (typeName[0]) {
case 'C' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_UTIL_COLLECTION[2]))
this.id = TypeIds.T_JavaUtilCollection;
return;
case 'I' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_UTIL_ITERATOR[2]))
this.id = TypeIds.T_JavaUtilIterator;
return;
case 'O' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_UTIL_OBJECTS[2]))
this.id = TypeIds.T_JavaUtilObjects;
return;
}
}
return;
}
return;
}
// remaining types MUST be in java.lang.*
switch (typeName[0]) {
case 'A' :
switch(typeName.length) {
case 13 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_AUTOCLOSEABLE[2])) {
this.id = TypeIds.T_JavaLangAutoCloseable;
this.typeBits |= TypeIds.BitAutoCloseable;
}
return;
case 14:
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ASSERTIONERROR[2]))
this.id = TypeIds.T_JavaLangAssertionError;
return;
}
return;
case 'B' :
switch (typeName.length) {
case 4 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_BYTE[2]))
this.id = TypeIds.T_JavaLangByte;
return;
case 7 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_BOOLEAN[2]))
this.id = TypeIds.T_JavaLangBoolean;
return;
}
return;
case 'C' :
switch (typeName.length) {
case 5 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_CLASS[2]))
this.id = TypeIds.T_JavaLangClass;
return;
case 9 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_CHARACTER[2]))
this.id = TypeIds.T_JavaLangCharacter;
else if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_CLONEABLE[2]))
this.id = TypeIds.T_JavaLangCloneable;
return;
case 22 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_CLASSNOTFOUNDEXCEPTION[2]))
this.id = TypeIds.T_JavaLangClassNotFoundException;
return;
}
return;
case 'D' :
switch (typeName.length) {
case 6 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_DOUBLE[2]))
this.id = TypeIds.T_JavaLangDouble;
return;
case 10 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_DEPRECATED[2]))
this.id = TypeIds.T_JavaLangDeprecated;
return;
}
return;
case 'E' :
switch (typeName.length) {
case 4 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ENUM[2]))
this.id = TypeIds.T_JavaLangEnum;
return;
case 5 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ERROR[2]))
this.id = TypeIds.T_JavaLangError;
return;
case 9 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_EXCEPTION[2]))
this.id = TypeIds.T_JavaLangException;
return;
}
return;
case 'F' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_FLOAT[2]))
this.id = TypeIds.T_JavaLangFloat;
else if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_FUNCTIONAL_INTERFACE[2]))
this.id = TypeIds.T_JavaLangFunctionalInterface;
return;
case 'I' :
switch (typeName.length) {
case 7 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_INTEGER[2]))
this.id = TypeIds.T_JavaLangInteger;
return;
case 8 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ITERABLE[2]))
this.id = TypeIds.T_JavaLangIterable;
return;
case 24 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ILLEGALARGUMENTEXCEPTION[2]))
this.id = TypeIds.T_JavaLangIllegalArgumentException;
return;
}
return;
case 'L' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_LONG[2]))
this.id = TypeIds.T_JavaLangLong;
return;
case 'N' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_NOCLASSDEFERROR[2]))
this.id = TypeIds.T_JavaLangNoClassDefError;
return;
case 'O' :
switch (typeName.length) {
case 6 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_OBJECT[2]))
this.id = TypeIds.T_JavaLangObject;
return;
case 8 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_OVERRIDE[2]))
this.id = TypeIds.T_JavaLangOverride;
return;
}
return;
case 'R' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_RUNTIMEEXCEPTION[2]))
this.id = TypeIds.T_JavaLangRuntimeException;
break;
case 'S' :
switch (typeName.length) {
case 5 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_SHORT[2]))
this.id = TypeIds.T_JavaLangShort;
return;
case 6 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_STRING[2]))
this.id = TypeIds.T_JavaLangString;
else if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_SYSTEM[2]))
this.id = TypeIds.T_JavaLangSystem;
return;
case 11 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_SAFEVARARGS[2]))
this.id = TypeIds.T_JavaLangSafeVarargs;
return;
case 12 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_STRINGBUFFER[2]))
this.id = TypeIds.T_JavaLangStringBuffer;
return;
case 13 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_STRINGBUILDER[2]))
this.id = TypeIds.T_JavaLangStringBuilder;
return;
case 16 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_SUPPRESSWARNINGS[2]))
this.id = TypeIds.T_JavaLangSuppressWarnings;
return;
}
return;
case 'T' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_THROWABLE[2]))
this.id = TypeIds.T_JavaLangThrowable;
return;
case 'V' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_VOID[2]))
this.id = TypeIds.T_JavaLangVoid;
return;
}
break;
case 4:
// expect one type from com.*.*.*:
if (CharOperation.equals(TypeConstants.COM_GOOGLE_INJECT_INJECT, this.compoundName)) {
this.id = TypeIds.T_ComGoogleInjectInject;
return;
}
// otherwise only expect java.*.*.*
if (!CharOperation.equals(TypeConstants.JAVA, this.compoundName[0]))
return;
packageName = this.compoundName[1];
if (packageName.length == 0) return; // just to be safe
packageName = this.compoundName[2];
if (packageName.length == 0) return; // just to be safe
typeName = this.compoundName[3];
if (typeName.length == 0) return; // just to be safe
switch (packageName[0]) {
case 'a' :
if (CharOperation.equals(packageName, TypeConstants.ANNOTATION)) {
switch (typeName[0]) {
case 'A' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_ANNOTATION[3]))
this.id = TypeIds.T_JavaLangAnnotationAnnotation;
return;
case 'D' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_DOCUMENTED[3]))
this.id = TypeIds.T_JavaLangAnnotationDocumented;
return;
case 'E' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_ELEMENTTYPE[3]))
this.id = TypeIds.T_JavaLangAnnotationElementType;
return;
case 'I' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_INHERITED[3]))
this.id = TypeIds.T_JavaLangAnnotationInherited;
return;
case 'R' :
switch (typeName.length) {
case 9 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_RETENTION[3]))
this.id = TypeIds.T_JavaLangAnnotationRetention;
return;
case 10 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_REPEATABLE[3]))
this.id = TypeIds.T_JavaLangAnnotationRepeatable;
return;
case 15 :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_RETENTIONPOLICY[3]))
this.id = TypeIds.T_JavaLangAnnotationRetentionPolicy;
return;
}
return;
case 'T' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_ANNOTATION_TARGET[3]))
this.id = TypeIds.T_JavaLangAnnotationTarget;
return;
}
}
return;
case 'i':
if (CharOperation.equals(packageName, TypeConstants.INVOKE)) {
if (typeName.length == 0) return; // just to be safe
switch (typeName[0]) {
case 'M' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_INVOKE_METHODHANDLE_$_POLYMORPHICSIGNATURE[3]))
this.id = TypeIds.T_JavaLangInvokeMethodHandlePolymorphicSignature;
return;
}
}
return;
case 'r' :
if (CharOperation.equals(packageName, TypeConstants.REFLECT)) {
switch (typeName[0]) {
case 'C' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_REFLECT_CONSTRUCTOR[2]))
this.id = TypeIds.T_JavaLangReflectConstructor;
return;
case 'F' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_REFLECT_FIELD[2]))
this.id = TypeIds.T_JavaLangReflectField;
return;
case 'M' :
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_REFLECT_METHOD[2]))
this.id = TypeIds.T_JavaLangReflectMethod;
return;
}
}
return;
}
break;
case 5 :
packageName = this.compoundName[0];
switch (packageName[0]) {
case 'j' :
if (!CharOperation.equals(TypeConstants.JAVA, this.compoundName[0]))
return;
packageName = this.compoundName[1];
if (packageName.length == 0) return; // just to be safe
if (CharOperation.equals(TypeConstants.LANG, packageName)) {
packageName = this.compoundName[2];
if (packageName.length == 0) return; // just to be safe
switch (packageName[0]) {
case 'i' :
if (CharOperation.equals(packageName, TypeConstants.INVOKE)) {
typeName = this.compoundName[3];
if (typeName.length == 0) return; // just to be safe
switch (typeName[0]) {
case 'M' :
char[] memberTypeName = this.compoundName[4];
if (memberTypeName.length == 0) return; // just to be safe
if (CharOperation.equals(typeName, TypeConstants.JAVA_LANG_INVOKE_METHODHANDLE_POLYMORPHICSIGNATURE[3])
&& CharOperation.equals(memberTypeName, TypeConstants.JAVA_LANG_INVOKE_METHODHANDLE_POLYMORPHICSIGNATURE[4]))
this.id = TypeIds.T_JavaLangInvokeMethodHandlePolymorphicSignature;
return;
}
}
return;
}
return;
}
return;
case 'o':
if (!CharOperation.equals(TypeConstants.ORG, this.compoundName[0]))
return;
packageName = this.compoundName[1];
if (packageName.length == 0) return; // just to be safe
switch (packageName[0]) {
case 'e':
if (CharOperation.equals(TypeConstants.ECLIPSE, packageName)) {
packageName = this.compoundName[2];
if (packageName.length == 0) return; // just to be safe
switch (packageName[0]) {
case 'c' :
if (CharOperation.equals(packageName, TypeConstants.CORE)) {
typeName = this.compoundName[3];
if (typeName.length == 0) return; // just to be safe
switch (typeName[0]) {
case 'r' :
char[] memberTypeName = this.compoundName[4];
if (memberTypeName.length == 0) return; // just to be safe
if (CharOperation.equals(typeName, TypeConstants.ORG_ECLIPSE_CORE_RUNTIME_ASSERT[3])
&& CharOperation.equals(memberTypeName, TypeConstants.ORG_ECLIPSE_CORE_RUNTIME_ASSERT[4]))
this.id = TypeIds.T_OrgEclipseCoreRuntimeAssert;
return;
}
}
return;
}
return;
}
return;
case 'a':
if (CharOperation.equals(TypeConstants.APACHE, packageName)) {
if (CharOperation.equals(TypeConstants.COMMONS, this.compoundName[2])) {
if (CharOperation.equals(TypeConstants.ORG_APACHE_COMMONS_LANG_VALIDATE, this.compoundName))
this.id = TypeIds.T_OrgApacheCommonsLangValidate;
else if (CharOperation.equals(TypeConstants.ORG_APACHE_COMMONS_LANG3_VALIDATE, this.compoundName))
this.id = TypeIds.T_OrgApacheCommonsLang3Validate;
}
}
return;
}
return;
case 'c':
if (!CharOperation.equals(TypeConstants.COM, this.compoundName[0]))
return;
if (CharOperation.equals(TypeConstants.COM_GOOGLE_COMMON_BASE_PRECONDITIONS, this.compoundName))
this.id = TypeIds.T_ComGoogleCommonBasePreconditions;
return;
}
break;
case 6:
if (CharOperation.equals(TypeConstants.ORG, this.compoundName[0])) {
if (CharOperation.equals(TypeConstants.SPRING, this.compoundName[1])) {
if (CharOperation.equals(TypeConstants.AUTOWIRED, this.compoundName[5])) {
if (CharOperation.equals(TypeConstants.ORG_SPRING_AUTOWIRED, this.compoundName)) {
this.id = TypeIds.T_OrgSpringframeworkBeansFactoryAnnotationAutowired;
}
}
return;
}
if (!CharOperation.equals(TypeConstants.JDT, this.compoundName[2]) || !CharOperation.equals(TypeConstants.ITYPEBINDING, this.compoundName[5]))
return;
if (CharOperation.equals(TypeConstants.ORG_ECLIPSE_JDT_CORE_DOM_ITYPEBINDING, this.compoundName))
this.typeBits |= TypeIds.BitUninternedType;
}
break;
case 7 :
if (!CharOperation.equals(TypeConstants.JDT, this.compoundName[2]) || !CharOperation.equals(TypeConstants.TYPEBINDING, this.compoundName[6]))
return;
if (CharOperation.equals(TypeConstants.ORG_ECLIPSE_JDT_INTERNAL_COMPILER_LOOKUP_TYPEBINDING, this.compoundName))
this.typeBits |= TypeIds.BitUninternedType;
break;
}
}
public void computeId(LookupEnvironment environment) {
environment.getUnannotatedType(this);
}
/**
* p.X {} -> Lp/X;
*/
public char[] computeUniqueKey(boolean isLeaf) {
if (!isLeaf) return signature();
return genericTypeSignature();
}
/**
* Answer the receiver's constant pool name.
*
* NOTE: This method should only be used during/after code gen.
*/
public char[] constantPoolName() /* java/lang/Object */ {
if (this.constantPoolName != null) return this.constantPoolName;
return this.constantPoolName = CharOperation.concatWith(this.compoundName, '/');
}
public String debugName() {
return (this.compoundName != null) ? this.hasTypeAnnotations() ? annotatedDebugName() : new String(readableName()) : "UNNAMED TYPE"; //$NON-NLS-1$
}
public int depth() {
int depth = 0;
ReferenceBinding current = this;
while ((current = current.enclosingType()) != null)
depth++;
return depth;
}
public boolean detectAnnotationCycle() {
if ((this.tagBits & TagBits.EndAnnotationCheck) != 0) return false; // already checked
if ((this.tagBits & TagBits.BeginAnnotationCheck) != 0) return true; // in the middle of checking its methods
this.tagBits |= TagBits.BeginAnnotationCheck;
MethodBinding[] currentMethods = methods();
boolean inCycle = false; // check each method before failing
for (int i = 0, l = currentMethods.length; i < l; i++) {
TypeBinding returnType = currentMethods[i].returnType.leafComponentType().erasure();
if (TypeBinding.equalsEquals(this, returnType)) {
if (this instanceof SourceTypeBinding) {
MethodDeclaration decl = (MethodDeclaration) currentMethods[i].sourceMethod();
((SourceTypeBinding) this).scope.problemReporter().annotationCircularity(this, this, decl != null ? decl.returnType : null);
}
} else if (returnType.isAnnotationType() && ((ReferenceBinding) returnType).detectAnnotationCycle()) {
if (this instanceof SourceTypeBinding) {
MethodDeclaration decl = (MethodDeclaration) currentMethods[i].sourceMethod();
((SourceTypeBinding) this).scope.problemReporter().annotationCircularity(this, returnType, decl != null ? decl.returnType : null);
}
inCycle = true;
}
}
if (inCycle)
return true;
this.tagBits |= TagBits.EndAnnotationCheck;
return false;
}
public final ReferenceBinding enclosingTypeAt(int relativeDepth) {
ReferenceBinding current = this;
while (relativeDepth-- > 0 && current != null)
current = current.enclosingType();
return current;
}
public int enumConstantCount() {
int count = 0;
FieldBinding[] fields = fields();
for (int i = 0, length = fields.length; i < length; i++) {
if ((fields[i].modifiers & ClassFileConstants.AccEnum) != 0) count++;
}
return count;
}
public int fieldCount() {
return fields().length;
}
public FieldBinding[] fields() {
return Binding.NO_FIELDS;
}
public final int getAccessFlags() {
return this.modifiers & ExtraCompilerModifiers.AccJustFlag;
}
/**
* @return the JSR 175 annotations for this type.
*/
public AnnotationBinding[] getAnnotations() {
return retrieveAnnotations(this);
}
/**
* @see org.eclipse.jdt.internal.compiler.lookup.Binding#getAnnotationTagBits()
*/
public long getAnnotationTagBits() {
return this.tagBits;
}
/**
* @return the enclosingInstancesSlotSize
*/
public int getEnclosingInstancesSlotSize() {
if (isStatic()) return 0;
return enclosingType() == null ? 0 : 1;
}
public MethodBinding getExactConstructor(TypeBinding[] argumentTypes) {
return null;
}
public MethodBinding getExactMethod(char[] selector, TypeBinding[] argumentTypes, CompilationUnitScope refScope) {
return null;
}
public FieldBinding getField(char[] fieldName, boolean needResolve) {
return null;
}
/**
* @see org.eclipse.jdt.internal.compiler.env.IDependent#getFileName()
*/
public char[] getFileName() {
return this.fileName;
}
public ReferenceBinding getMemberType(char[] typeName) {
ReferenceBinding[] memberTypes = memberTypes();
for (int i = memberTypes.length; --i >= 0;)
if (CharOperation.equals(memberTypes[i].sourceName, typeName))
return memberTypes[i];
return null;
}
public MethodBinding[] getMethods(char[] selector) {
return Binding.NO_METHODS;
}
// Answer methods named selector, which take no more than the suggestedParameterLength.
// The suggested parameter length is optional and may not be guaranteed by every type.
public MethodBinding[] getMethods(char[] selector, int suggestedParameterLength) {
return getMethods(selector);
}
/**
* @return the outerLocalVariablesSlotSize
*/
public int getOuterLocalVariablesSlotSize() {
return 0;
}
public PackageBinding getPackage() {
return this.fPackage;
}
public TypeVariableBinding getTypeVariable(char[] variableName) {
TypeVariableBinding[] typeVariables = typeVariables();
for (int i = typeVariables.length; --i >= 0;)
if (CharOperation.equals(typeVariables[i].sourceName, variableName))
return typeVariables[i];
return null;
}
public int hashCode() {
// ensure ReferenceBindings hash to the same position as UnresolvedReferenceBindings so they can be replaced without rehashing
// ALL ReferenceBindings are unique when created so equals() is the same as ==
return (this.compoundName == null || this.compoundName.length == 0)
? super.hashCode()
: CharOperation.hashCode(this.compoundName[this.compoundName.length - 1]);
}
/**
* Returns true if the two types have an incompatible common supertype,
* e.g. List and List
*/
public boolean hasIncompatibleSuperType(ReferenceBinding otherType) {
if (TypeBinding.equalsEquals(this, otherType)) return false;
ReferenceBinding[] interfacesToVisit = null;
int nextPosition = 0;
ReferenceBinding currentType = this;
TypeBinding match;
do {
match = otherType.findSuperTypeOriginatingFrom(currentType);
if (match != null && match.isProvablyDistinct(currentType))
return true;
ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
if (itsInterfaces != null && itsInterfaces != Binding.NO_SUPERINTERFACES) {
if (interfacesToVisit == null) {
interfacesToVisit = itsInterfaces;
nextPosition = interfacesToVisit.length;
} else {
int itsLength = itsInterfaces.length;
if (nextPosition + itsLength >= interfacesToVisit.length)
System.arraycopy(interfacesToVisit, 0, interfacesToVisit = new ReferenceBinding[nextPosition + itsLength + 5], 0, nextPosition);
nextInterface : for (int a = 0; a < itsLength; a++) {
ReferenceBinding next = itsInterfaces[a];
for (int b = 0; b < nextPosition; b++)
if (TypeBinding.equalsEquals(next, interfacesToVisit[b])) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
} while ((currentType = currentType.superclass()) != null);
for (int i = 0; i < nextPosition; i++) {
currentType = interfacesToVisit[i];
if (TypeBinding.equalsEquals(currentType, otherType)) return false;
match = otherType.findSuperTypeOriginatingFrom(currentType);
if (match != null && match.isProvablyDistinct(currentType))
return true;
ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
if (itsInterfaces != null && itsInterfaces != Binding.NO_SUPERINTERFACES) {
int itsLength = itsInterfaces.length;
if (nextPosition + itsLength >= interfacesToVisit.length)
System.arraycopy(interfacesToVisit, 0, interfacesToVisit = new ReferenceBinding[nextPosition + itsLength + 5], 0, nextPosition);
nextInterface : for (int a = 0; a < itsLength; a++) {
ReferenceBinding next = itsInterfaces[a];
for (int b = 0; b < nextPosition; b++)
if (TypeBinding.equalsEquals(next, interfacesToVisit[b])) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
return false;
}
public boolean hasMemberTypes() {
return false;
}
/**
* Answer whether a @NonNullByDefault is applicable at the reference binding,
* for 1.8 check if the default is applicable to the given kind of location.
*/
// pre: null annotation analysis is enabled
boolean hasNonNullDefaultFor(int location, boolean useTypeAnnotations) {
// Note, STB overrides for correctly handling local types
ReferenceBinding currentType = this;
while (currentType != null) {
if (useTypeAnnotations) {
int nullDefault = ((ReferenceBinding)currentType.original()).getNullDefault();
if (nullDefault != 0)
return (nullDefault & location) != 0;
} else {
if ((currentType.tagBits & TagBits.AnnotationNonNullByDefault) != 0)
return true;
if ((currentType.tagBits & TagBits.AnnotationNullUnspecifiedByDefault) != 0)
return false;
}
currentType = currentType.enclosingType();
}
// package
if (useTypeAnnotations)
return (this.getPackage().defaultNullness & location) != 0;
else
return this.getPackage().defaultNullness == NONNULL_BY_DEFAULT;
}
int getNullDefault() {
return 0;
}
public boolean acceptsNonNullDefault() {
return true;
}
public final boolean hasRestrictedAccess() {
return (this.modifiers & ExtraCompilerModifiers.AccRestrictedAccess) != 0;
}
/** Query typeBits without triggering supertype lookup. */
public boolean hasNullBit(int mask) {
return (this.typeBits & mask) != 0;
}
/** Answer true if the receiver implements anInterface or is identical to anInterface.
* If searchHierarchy is true, then also search the receiver's superclasses.
*
* NOTE: Assume that anInterface is an interface.
*/
public boolean implementsInterface(ReferenceBinding anInterface, boolean searchHierarchy) {
if (TypeBinding.equalsEquals(this, anInterface))
return true;
ReferenceBinding[] interfacesToVisit = null;
int nextPosition = 0;
ReferenceBinding currentType = this;
do {
ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
if (itsInterfaces != null && itsInterfaces != Binding.NO_SUPERINTERFACES) { // in code assist cases when source types are added late, may not be finished connecting hierarchy
if (interfacesToVisit == null) {
interfacesToVisit = itsInterfaces;
nextPosition = interfacesToVisit.length;
} else {
int itsLength = itsInterfaces.length;
if (nextPosition + itsLength >= interfacesToVisit.length)
System.arraycopy(interfacesToVisit, 0, interfacesToVisit = new ReferenceBinding[nextPosition + itsLength + 5], 0, nextPosition);
nextInterface : for (int a = 0; a < itsLength; a++) {
ReferenceBinding next = itsInterfaces[a];
for (int b = 0; b < nextPosition; b++)
if (TypeBinding.equalsEquals(next, interfacesToVisit[b])) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
} while (searchHierarchy && (currentType = currentType.superclass()) != null);
for (int i = 0; i < nextPosition; i++) {
currentType = interfacesToVisit[i];
if (currentType.isEquivalentTo(anInterface))
return true;
ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
if (itsInterfaces != null && itsInterfaces != Binding.NO_SUPERINTERFACES) { // in code assist cases when source types are added late, may not be finished connecting hierarchy
int itsLength = itsInterfaces.length;
if (nextPosition + itsLength >= interfacesToVisit.length)
System.arraycopy(interfacesToVisit, 0, interfacesToVisit = new ReferenceBinding[nextPosition + itsLength + 5], 0, nextPosition);
nextInterface : for (int a = 0; a < itsLength; a++) {
ReferenceBinding next = itsInterfaces[a];
for (int b = 0; b < nextPosition; b++)
if (TypeBinding.equalsEquals(next, interfacesToVisit[b])) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
return false;
}
// Internal method... assume its only sent to classes NOT interfaces
boolean implementsMethod(MethodBinding method) {
char[] selector = method.selector;
ReferenceBinding type = this;
while (type != null) {
MethodBinding[] methods = type.methods();
long range;
if ((range = ReferenceBinding.binarySearch(selector, methods)) >= 0) {
int start = (int) range, end = (int) (range >> 32);
for (int i = start; i <= end; i++) {
if (methods[i].areParametersEqual(method))
return true;
}
}
type = type.superclass();
}
return false;
}
/**
* Answer true if the receiver is an abstract type
*/
public final boolean isAbstract() {
return (this.modifiers & ClassFileConstants.AccAbstract) != 0;
}
public boolean isAnnotationType() {
return (this.modifiers & ClassFileConstants.AccAnnotation) != 0;
}
public final boolean isBinaryBinding() {
return (this.tagBits & TagBits.IsBinaryBinding) != 0;
}
public boolean isClass() {
return (this.modifiers & (ClassFileConstants.AccInterface | ClassFileConstants.AccAnnotation | ClassFileConstants.AccEnum)) == 0;
}
public boolean isProperType(boolean admitCapture18) {
ReferenceBinding outer = enclosingType();
if (outer != null && !outer.isProperType(admitCapture18))
return false;
return super.isProperType(admitCapture18);
}
/**
* Answer true if the receiver type can be assigned to the argument type (right)
* In addition to improving performance, caching also ensures there is no infinite regression
* since per nature, the compatibility check is recursive through parameterized type arguments (122775)
*/
public boolean isCompatibleWith(TypeBinding otherType, /*@Nullable*/ Scope captureScope) {
if (equalsEquals(otherType, this))
return true;
if (otherType.id == TypeIds.T_JavaLangObject)
return true;
Object result;
if (this.compatibleCache == null) {
this.compatibleCache = new SimpleLookupTable(3);
result = null;
} else {
result = this.compatibleCache.get(otherType); // [dbg reset] this.compatibleCache.put(otherType,null)
if (result != null) {
return result == Boolean.TRUE;
}
}
this.compatibleCache.put(otherType, Boolean.FALSE); // protect from recursive call
if (isCompatibleWith0(otherType, captureScope)) {
this.compatibleCache.put(otherType, Boolean.TRUE);
return true;
}
if (captureScope == null
&& this instanceof TypeVariableBinding
&& ((TypeVariableBinding)this).firstBound instanceof ParameterizedTypeBinding) {
// see https://bugs.eclipse.org/395002#c9
// in this case a subsequent check with captureScope != null may actually get
// a better result, reset this info to ensure we're not blocking that re-check.
this.compatibleCache.put(otherType, null);
}
return false;
}
/**
* Answer true if the receiver type can be assigned to the argument type (right)
*/
private boolean isCompatibleWith0(TypeBinding otherType, /*@Nullable*/ Scope captureScope) {
if (TypeBinding.equalsEquals(otherType, this))
return true;
if (otherType.id == TypeIds.T_JavaLangObject)
return true;
// equivalence may allow compatibility with array type through wildcard
// bound
if (isEquivalentTo(otherType))
return true;
switch (otherType.kind()) {
case Binding.WILDCARD_TYPE :
case Binding.INTERSECTION_TYPE:
return false; // should have passed equivalence check above if
// wildcard
case Binding.TYPE_PARAMETER :
// check compatibility with capture of ? super X
if (otherType.isCapture()) {
CaptureBinding otherCapture = (CaptureBinding) otherType;
TypeBinding otherLowerBound;
if ((otherLowerBound = otherCapture.lowerBound) != null) {
if (otherLowerBound.isArrayType()) return false;
return isCompatibleWith(otherLowerBound);
}
}
if (otherType instanceof InferenceVariable) {
// may interpret InferenceVariable as a joker, but only when within an outer lambda inference:
if (captureScope != null) {
MethodScope methodScope = captureScope.methodScope();
if (methodScope != null) {
ReferenceContext referenceContext = methodScope.referenceContext;
if (referenceContext instanceof LambdaExpression
&& ((LambdaExpression)referenceContext).inferenceContext != null)
return true;
}
}
}
//$FALL-THROUGH$
case Binding.GENERIC_TYPE :
case Binding.TYPE :
case Binding.PARAMETERIZED_TYPE :
case Binding.RAW_TYPE :
switch (kind()) {
case Binding.GENERIC_TYPE :
case Binding.PARAMETERIZED_TYPE :
case Binding.RAW_TYPE :
if (TypeBinding.equalsEquals(erasure(), otherType.erasure()))
return false; // should have passed equivalence check
// above if same erasure
}
ReferenceBinding otherReferenceType = (ReferenceBinding) otherType;
if (otherReferenceType.isInterface()) { // could be annotation type
if (implementsInterface(otherReferenceType, true))
return true;
if (this instanceof TypeVariableBinding && captureScope != null) {
TypeVariableBinding typeVariable = (TypeVariableBinding) this;
if (typeVariable.firstBound instanceof ParameterizedTypeBinding) {
TypeBinding bound = typeVariable.firstBound.capture(captureScope, -1, -1); // no position needed as this capture will never escape this context
return bound.isCompatibleWith(otherReferenceType);
}
}
}
if (isInterface()) // Explicit conversion from an interface
// to a class is not allowed
return false;
return otherReferenceType.isSuperclassOf(this);
default :
return false;
}
}
public boolean isSubtypeOf(TypeBinding other) {
if (isSubTypeOfRTL(other))
return true;
// TODO: if this has wildcards, perform capture before the next call:
TypeBinding candidate = findSuperTypeOriginatingFrom(other);
if (candidate == null)
return false;
if (TypeBinding.equalsEquals(candidate, other))
return true;
// T <: T#RAW:
if (other.isRawType() && TypeBinding.equalsEquals(candidate.erasure(), other.erasure()))
return true;
TypeBinding[] sis = other.typeArguments();
TypeBinding[] tis = candidate.typeArguments();
if (tis == null || sis == null)
return false;
if (sis.length != tis.length)
return false;
for (int i = 0; i < sis.length; i++) {
if (!tis[i].isTypeArgumentContainedBy(sis[i]))
return false;
}
return true;
}
protected boolean isSubTypeOfRTL(TypeBinding other) {
if (TypeBinding.equalsEquals(this, other))
return true;
if (other instanceof CaptureBinding) {
// for this one kind we must first unwrap the rhs:
TypeBinding lower = ((CaptureBinding) other).lowerBound;
return (lower != null && isSubtypeOf(lower));
}
if (other instanceof ReferenceBinding) {
TypeBinding[] intersecting = ((ReferenceBinding) other).getIntersectingTypes();
if (intersecting != null) {
for (int i = 0; i < intersecting.length; i++) {
if (!isSubtypeOf(intersecting[i]))
return false;
}
return true;
}
}
return false;
}
/**
* Answer true if the receiver has default visibility
*/
public final boolean isDefault() {
return (this.modifiers & (ClassFileConstants.AccPublic | ClassFileConstants.AccProtected | ClassFileConstants.AccPrivate)) == 0;
}
/**
* Answer true if the receiver is a deprecated type
*/
public final boolean isDeprecated() {
return (this.modifiers & ClassFileConstants.AccDeprecated) != 0;
}
public boolean isEnum() {
return (this.modifiers & ClassFileConstants.AccEnum) != 0;
}
/**
* Answer true if the receiver is final and cannot be subclassed
*/
public final boolean isFinal() {
return (this.modifiers & ClassFileConstants.AccFinal) != 0;
}
/**
* Returns true if the type hierarchy is being connected
*/
public boolean isHierarchyBeingConnected() {
return (this.tagBits & TagBits.EndHierarchyCheck) == 0 && (this.tagBits & TagBits.BeginHierarchyCheck) != 0;
}
/**
* Returns true if the type hierarchy is being connected "actively" i.e not paused momentatrily,
* while resolving type arguments. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=294057
*/
public boolean isHierarchyBeingActivelyConnected() {
return (this.tagBits & TagBits.EndHierarchyCheck) == 0 && (this.tagBits & TagBits.BeginHierarchyCheck) != 0 && (this.tagBits & TagBits.PauseHierarchyCheck) == 0;
}
/**
* Returns true if the type hierarchy is connected
*/
public boolean isHierarchyConnected() {
return true;
}
public boolean isInterface() {
// consider strict interfaces and annotation types
return (this.modifiers & ClassFileConstants.AccInterface) != 0;
}
public boolean isFunctionalInterface(Scope scope) {
MethodBinding method;
return isInterface() && (method = getSingleAbstractMethod(scope, true)) != null && method.isValidBinding();
}
/**
* Answer true if the receiver has private visibility
*/
public final boolean isPrivate() {
return (this.modifiers & ClassFileConstants.AccPrivate) != 0;
}
/**
* Answer true if the receiver or any of its enclosing types have private visibility
*/
public final boolean isOrEnclosedByPrivateType() {
if (isLocalType()) return true; // catch all local types
ReferenceBinding type = this;
while (type != null) {
if ((type.modifiers & ClassFileConstants.AccPrivate) != 0)
return true;
type = type.enclosingType();
}
return false;
}
/**
* Answer true if the receiver has protected visibility
*/
public final boolean isProtected() {
return (this.modifiers & ClassFileConstants.AccProtected) != 0;
}
/**
* Answer true if the receiver has public visibility
*/
public final boolean isPublic() {
return (this.modifiers & ClassFileConstants.AccPublic) != 0;
}
/**
* Answer true if the receiver is a static member type (or toplevel)
*/
public final boolean isStatic() {
return (this.modifiers & (ClassFileConstants.AccStatic | ClassFileConstants.AccInterface)) != 0 || (this.tagBits & TagBits.IsNestedType) == 0;
}
/**
* Answer true if all float operations must adher to IEEE 754 float/double rules
*/
public final boolean isStrictfp() {
return (this.modifiers & ClassFileConstants.AccStrictfp) != 0;
}
/**
* Answer true if the receiver is in the superclass hierarchy of aType
* NOTE: Object.isSuperclassOf(Object) -> false
*/
public boolean isSuperclassOf(ReferenceBinding otherType) {
while ((otherType = otherType.superclass()) != null) {
if (otherType.isEquivalentTo(this)) return true;
}
return false;
}
/**
* @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#isThrowable()
*/
public boolean isThrowable() {
ReferenceBinding current = this;
do {
switch (current.id) {
case TypeIds.T_JavaLangThrowable :
case TypeIds.T_JavaLangError :
case TypeIds.T_JavaLangRuntimeException :
case TypeIds.T_JavaLangException :
return true;
}
} while ((current = current.superclass()) != null);
return false;
}
/**
* JLS 11.5 ensures that Throwable, Exception, RuntimeException and Error are directly connected.
* (Throwable<- Exception <- RumtimeException, Throwable <- Error). Thus no need to check #isCompatibleWith
* but rather check in type IDs so as to avoid some eager class loading for JCL writers.
* When 'includeSupertype' is true, answers true if the given type can be a supertype of some unchecked exception
* type (i.e. Throwable or Exception).
* @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#isUncheckedException(boolean)
*/
public boolean isUncheckedException(boolean includeSupertype) {
switch (this.id) {
case TypeIds.T_JavaLangError :
case TypeIds.T_JavaLangRuntimeException :
return true;
case TypeIds.T_JavaLangThrowable :
case TypeIds.T_JavaLangException :
return includeSupertype;
}
ReferenceBinding current = this;
while ((current = current.superclass()) != null) {
switch (current.id) {
case TypeIds.T_JavaLangError :
case TypeIds.T_JavaLangRuntimeException :
return true;
case TypeIds.T_JavaLangThrowable :
case TypeIds.T_JavaLangException :
return false;
}
}
return false;
}
/**
* Answer true if the receiver has private visibility and is used locally
*/
public final boolean isUsed() {
return (this.modifiers & ExtraCompilerModifiers.AccLocallyUsed) != 0;
}
/**
* Answer true if the receiver is deprecated (or any of its enclosing types)
*/
public final boolean isViewedAsDeprecated() {
return (this.modifiers & (ClassFileConstants.AccDeprecated | ExtraCompilerModifiers.AccDeprecatedImplicitly)) != 0
|| getPackage().isViewedAsDeprecated();
}
public ReferenceBinding[] memberTypes() {
return Binding.NO_MEMBER_TYPES;
}
public MethodBinding[] methods() {
return Binding.NO_METHODS;
}
public final ReferenceBinding outermostEnclosingType() {
ReferenceBinding current = this;
while (true) {
ReferenceBinding last = current;
if ((current = current.enclosingType()) == null)
return last;
}
}
/**
* Answer the source name for the type.
* In the case of member types, as the qualified name from its top level type.
* For example, for a member type N defined inside M & A: "A.M.N".
*/
public char[] qualifiedSourceName() {
if (isMemberType())
return CharOperation.concat(enclosingType().qualifiedSourceName(), sourceName(), '.');
return sourceName();
}
/**
* Answer the receiver's signature.
*
* NOTE: This method should only be used during/after code gen.
*/
public char[] readableName() /*java.lang.Object, p.X */ {
char[] readableName;
if (isMemberType()) {
readableName = CharOperation.concat(enclosingType().readableName(), this.sourceName, '.');
} else {
readableName = CharOperation.concatWith(this.compoundName, '.');
}
TypeVariableBinding[] typeVars;
if ((typeVars = typeVariables()) != Binding.NO_TYPE_VARIABLES) {
StringBuffer nameBuffer = new StringBuffer(10);
nameBuffer.append(readableName).append('<');
for (int i = 0, length = typeVars.length; i < length; i++) {
if (i > 0) nameBuffer.append(',');
nameBuffer.append(typeVars[i].readableName());
}
nameBuffer.append('>');
int nameLength = nameBuffer.length();
readableName = new char[nameLength];
nameBuffer.getChars(0, nameLength, readableName, 0);
}
return readableName;
}
protected void appendNullAnnotation(StringBuffer nameBuffer, CompilerOptions options) {
if (options.isAnnotationBasedNullAnalysisEnabled) {
if (options.usesNullTypeAnnotations()) {
for (AnnotationBinding annotation : this.typeAnnotations) {
ReferenceBinding annotationType = annotation.getAnnotationType();
if (annotationType.hasNullBit(TypeIds.BitNonNullAnnotation|TypeIds.BitNullableAnnotation)) {
nameBuffer.append('@').append(annotationType.shortReadableName()).append(' ');
}
}
} else {
// restore applied null annotation from tagBits:
if ((this.tagBits & TagBits.AnnotationNonNull) != 0) {
char[][] nonNullAnnotationName = options.nonNullAnnotationName;
nameBuffer.append('@').append(nonNullAnnotationName[nonNullAnnotationName.length-1]).append(' ');
}
if ((this.tagBits & TagBits.AnnotationNullable) != 0) {
char[][] nullableAnnotationName = options.nullableAnnotationName;
nameBuffer.append('@').append(nullableAnnotationName[nullableAnnotationName.length-1]).append(' ');
}
}
}
}
public AnnotationHolder retrieveAnnotationHolder(Binding binding, boolean forceInitialization) {
SimpleLookupTable store = storedAnnotations(forceInitialization);
return store == null ? null : (AnnotationHolder) store.get(binding);
}
AnnotationBinding[] retrieveAnnotations(Binding binding) {
AnnotationHolder holder = retrieveAnnotationHolder(binding, true);
return holder == null ? Binding.NO_ANNOTATIONS : holder.getAnnotations();
}
public void setAnnotations(AnnotationBinding[] annotations) {
storeAnnotations(this, annotations);
}
public void setContainerAnnotationType(ReferenceBinding value) {
// Leave this to subclasses
}
public void tagAsHavingDefectiveContainerType() {
// Leave this to subclasses
}
/**
* @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#nullAnnotatedReadableName(CompilerOptions,boolean)
*/
public char[] nullAnnotatedReadableName(CompilerOptions options, boolean shortNames) {
if (shortNames)
return nullAnnotatedShortReadableName(options);
return nullAnnotatedReadableName(options);
}
char[] nullAnnotatedReadableName(CompilerOptions options) {
StringBuffer nameBuffer = new StringBuffer(10);
if (isMemberType()) {
nameBuffer.append(enclosingType().nullAnnotatedReadableName(options, false));
nameBuffer.append('.');
appendNullAnnotation(nameBuffer, options);
nameBuffer.append(this.sourceName);
} else if (this.compoundName != null) {
int i;
int l=this.compoundName.length;
for (i=0; i 0) { // empty arguments array happens when PTB has been created just to capture type annotations
nameBuffer.append('<');
for (int i = 0, length = arguments.length; i < length; i++) {
if (i > 0) nameBuffer.append(',');
nameBuffer.append(arguments[i].nullAnnotatedReadableName(options, false));
}
nameBuffer.append('>');
}
int nameLength = nameBuffer.length();
char[] readableName = new char[nameLength];
nameBuffer.getChars(0, nameLength, readableName, 0);
return readableName;
}
char[] nullAnnotatedShortReadableName(CompilerOptions options) {
StringBuffer nameBuffer = new StringBuffer(10);
if (isMemberType()) {
nameBuffer.append(enclosingType().nullAnnotatedReadableName(options, true));
nameBuffer.append('.');
appendNullAnnotation(nameBuffer, options);
nameBuffer.append(this.sourceName);
} else {
appendNullAnnotation(nameBuffer, options);
if (this.sourceName != null)
nameBuffer.append(this.sourceName);
else // WildcardBinding, CaptureBinding have no sourceName
nameBuffer.append(this.shortReadableName());
}
TypeBinding [] arguments = typeArguments();
if (arguments != null && arguments.length > 0) { // empty arguments array happens when PTB has been created just to capture type annotations
nameBuffer.append('<');
for (int i = 0, length = arguments.length; i < length; i++) {
if (i > 0) nameBuffer.append(',');
nameBuffer.append(arguments[i].nullAnnotatedReadableName(options, true));
}
nameBuffer.append('>');
}
int nameLength = nameBuffer.length();
char[] shortReadableName = new char[nameLength];
nameBuffer.getChars(0, nameLength, shortReadableName, 0);
return shortReadableName;
}
public char[] shortReadableName() /*Object*/ {
char[] shortReadableName;
if (isMemberType()) {
shortReadableName = CharOperation.concat(enclosingType().shortReadableName(), this.sourceName, '.');
} else {
shortReadableName = this.sourceName;
}
TypeVariableBinding[] typeVars;
if ((typeVars = typeVariables()) != Binding.NO_TYPE_VARIABLES) {
StringBuffer nameBuffer = new StringBuffer(10);
nameBuffer.append(shortReadableName).append('<');
for (int i = 0, length = typeVars.length; i < length; i++) {
if (i > 0) nameBuffer.append(',');
nameBuffer.append(typeVars[i].shortReadableName());
}
nameBuffer.append('>');
int nameLength = nameBuffer.length();
shortReadableName = new char[nameLength];
nameBuffer.getChars(0, nameLength, shortReadableName, 0);
}
return shortReadableName;
}
public char[] signature() /* Ljava/lang/Object; */ {
if (this.signature != null)
return this.signature;
return this.signature = CharOperation.concat('L', constantPoolName(), ';');
}
public char[] sourceName() {
return this.sourceName;
}
void storeAnnotationHolder(Binding binding, AnnotationHolder holder) {
if (holder == null) {
SimpleLookupTable store = storedAnnotations(false);
if (store != null)
store.removeKey(binding);
} else {
SimpleLookupTable store = storedAnnotations(true);
if (store != null)
store.put(binding, holder);
}
}
void storeAnnotations(Binding binding, AnnotationBinding[] annotations) {
AnnotationHolder holder = null;
if (annotations == null || annotations.length == 0) {
SimpleLookupTable store = storedAnnotations(false);
if (store != null)
holder = (AnnotationHolder) store.get(binding);
if (holder == null) return; // nothing to delete
} else {
SimpleLookupTable store = storedAnnotations(true);
if (store == null) return; // not supported
holder = (AnnotationHolder) store.get(binding);
if (holder == null)
holder = new AnnotationHolder();
}
storeAnnotationHolder(binding, holder.setAnnotations(annotations));
}
SimpleLookupTable storedAnnotations(boolean forceInitialize) {
return null; // overrride if interested in storing annotations for the receiver, its fields and methods
}
public ReferenceBinding superclass() {
return null;
}
public ReferenceBinding[] superInterfaces() {
return Binding.NO_SUPERINTERFACES;
}
public ReferenceBinding[] syntheticEnclosingInstanceTypes() {
if (isStatic()) return null;
ReferenceBinding enclosingType = enclosingType();
if (enclosingType == null)
return null;
return new ReferenceBinding[] {enclosingType};
}
MethodBinding[] unResolvedMethods() { // for the MethodVerifier so it doesn't resolve types
return methods();
}
public FieldBinding[] unResolvedFields() {
return Binding.NO_FIELDS;
}
/*
* If a type - known to be a Closeable - is mentioned in one of our white lists
* answer the typeBit for the white list (BitWrapperCloseable or BitResourceFreeCloseable).
*/
protected int applyCloseableClassWhitelists() {
switch (this.compoundName.length) {
case 3:
if (CharOperation.equals(TypeConstants.JAVA, this.compoundName[0])) {
if (CharOperation.equals(TypeConstants.IO, this.compoundName[1])) {
char[] simpleName = this.compoundName[2];
int l = TypeConstants.JAVA_IO_WRAPPER_CLOSEABLES.length;
for (int i = 0; i < l; i++) {
if (CharOperation.equals(simpleName, TypeConstants.JAVA_IO_WRAPPER_CLOSEABLES[i]))
return TypeIds.BitWrapperCloseable;
}
l = TypeConstants.JAVA_IO_RESOURCE_FREE_CLOSEABLES.length;
for (int i = 0; i < l; i++) {
if (CharOperation.equals(simpleName, TypeConstants.JAVA_IO_RESOURCE_FREE_CLOSEABLES[i]))
return TypeIds.BitResourceFreeCloseable;
}
}
}
break;
case 4:
if (CharOperation.equals(TypeConstants.JAVA, this.compoundName[0])) {
if (CharOperation.equals(TypeConstants.UTIL, this.compoundName[1])) {
if (CharOperation.equals(TypeConstants.ZIP, this.compoundName[2])) {
char[] simpleName = this.compoundName[3];
int l = TypeConstants.JAVA_UTIL_ZIP_WRAPPER_CLOSEABLES.length;
for (int i = 0; i < l; i++) {
if (CharOperation.equals(simpleName, TypeConstants.JAVA_UTIL_ZIP_WRAPPER_CLOSEABLES[i]))
return TypeIds.BitWrapperCloseable;
}
}
}
}
break;
}
int l = TypeConstants.OTHER_WRAPPER_CLOSEABLES.length;
for (int i = 0; i < l; i++) {
if (CharOperation.equals(this.compoundName, TypeConstants.OTHER_WRAPPER_CLOSEABLES[i]))
return TypeIds.BitWrapperCloseable;
}
return 0;
}
/*
* If a type - known to be a Closeable - is mentioned in one of our white lists
* answer the typeBit for the white list (BitWrapperCloseable or BitResourceFreeCloseable).
*/
protected int applyCloseableInterfaceWhitelists() {
switch (this.compoundName.length) {
case 4:
if (CharOperation.equals(this.compoundName, TypeConstants.RESOURCE_FREE_CLOSEABLE_STREAM))
return TypeIds.BitResourceFreeCloseable;
break;
}
return 0;
}
protected MethodBinding [] getInterfaceAbstractContracts(Scope scope, boolean replaceWildcards) throws InvalidInputException {
if (!isInterface() || !isValidBinding()) {
throw new InvalidInputException("Not a functional interface"); //$NON-NLS-1$
}
MethodBinding [] methods = methods();
MethodBinding [] contracts = new MethodBinding[0];
int contractsCount = 0;
int contractsLength = 0;
ReferenceBinding [] superInterfaces = superInterfaces();
for (int i = 0, length = superInterfaces.length; i < length; i++) {
MethodBinding [] superInterfaceContracts = superInterfaces[i].getInterfaceAbstractContracts(scope, replaceWildcards);
final int superInterfaceContractsLength = superInterfaceContracts == null ? 0 : superInterfaceContracts.length;
if (superInterfaceContractsLength == 0) continue;
if (contractsLength < contractsCount + superInterfaceContractsLength) {
System.arraycopy(contracts, 0, contracts = new MethodBinding[contractsLength = contractsCount + superInterfaceContractsLength], 0, contractsCount);
}
System.arraycopy(superInterfaceContracts, 0, contracts, contractsCount, superInterfaceContractsLength);
contractsCount += superInterfaceContractsLength;
}
for (int i = 0, length = methods == null ? 0 : methods.length; i < length; i++) {
final MethodBinding method = methods[i];
if (method == null || method.isStatic() || method.redeclaresPublicObjectMethod(scope))
continue;
if (!method.isValidBinding())
throw new InvalidInputException("Not a functional interface"); //$NON-NLS-1$
for (int j = 0; j < contractsCount;) {
if ( contracts[j] != null && MethodVerifier.doesMethodOverride(method, contracts[j], scope.environment())) {
contractsCount--;
// abstract method from super type overridden by present interface ==> contracts[j] = null;
if (j < contractsCount) {
System.arraycopy(contracts, j+1, contracts, j, contractsCount - j);
continue;
}
}
j++;
}
if (method.isDefaultMethod())
continue; // skip default method itself
if (contractsCount == contractsLength) {
System.arraycopy(contracts, 0, contracts = new MethodBinding[contractsLength += 16], 0, contractsCount);
}
contracts[contractsCount++] = method;
}
if (contractsCount < contractsLength) {
System.arraycopy(contracts, 0, contracts = new MethodBinding[contractsCount], 0, contractsCount);
}
return contracts;
}
public MethodBinding getSingleAbstractMethod(Scope scope, boolean replaceWildcards) {
int index = replaceWildcards ? 0 : 1;
if (this.singleAbstractMethod != null) {
if (this.singleAbstractMethod[index] != null)
return this.singleAbstractMethod[index];
} else {
this.singleAbstractMethod = new MethodBinding[2];
}
if (this.compoundName != null)
scope.compilationUnitScope().recordQualifiedReference(this.compoundName);
MethodBinding[] methods = null;
try {
methods = getInterfaceAbstractContracts(scope, replaceWildcards);
if (methods == null || methods.length == 0)
return this.singleAbstractMethod[index] = samProblemBinding;
int contractParameterLength = 0;
char [] contractSelector = null;
for (int i = 0, length = methods.length; i < length; i++) {
MethodBinding method = methods[i];
if (method == null) continue;
if (contractSelector == null) {
contractSelector = method.selector;
contractParameterLength = method.parameters == null ? 0 : method.parameters.length;
} else {
int methodParameterLength = method.parameters == null ? 0 : method.parameters.length;
if (methodParameterLength != contractParameterLength || !CharOperation.equals(method.selector, contractSelector))
return this.singleAbstractMethod[index] = samProblemBinding;
}
}
} catch (InvalidInputException e) {
return this.singleAbstractMethod[index] = samProblemBinding;
}
if (methods.length == 1)
return this.singleAbstractMethod[index] = methods[0];
final LookupEnvironment environment = scope.environment();
boolean genericMethodSeen = false;
int length = methods.length;
boolean analyseNullAnnotations = environment.globalOptions.isAnnotationBasedNullAnalysisEnabled;
next:for (int i = length - 1; i >= 0; --i) {
MethodBinding method = methods[i], otherMethod = null;
if (method.typeVariables != Binding.NO_TYPE_VARIABLES)
genericMethodSeen = true;
TypeBinding returnType = method.returnType;
TypeBinding[] parameters = method.parameters;
for (int j = 0; j < length; j++) {
if (i == j) continue;
otherMethod = methods[j];
if (otherMethod.typeVariables != Binding.NO_TYPE_VARIABLES)
genericMethodSeen = true;
if (genericMethodSeen) { // adapt type parameters.
otherMethod = MethodVerifier.computeSubstituteMethod(otherMethod, method, environment);
if (otherMethod == null)
continue next;
}
if (!MethodVerifier.isSubstituteParameterSubsignature(method, otherMethod, environment) || !MethodVerifier.areReturnTypesCompatible(method, otherMethod, environment))
continue next;
if (analyseNullAnnotations) {
returnType = NullAnnotationMatching.strongerType(returnType, otherMethod.returnType, environment);
parameters = NullAnnotationMatching.weakerTypes(parameters, otherMethod.parameters, environment);
}
}
// If we reach here, we found a method that is override equivalent with every other method and is also return type substitutable. Compute kosher exceptions now ...
ReferenceBinding [] exceptions = new ReferenceBinding[0];
int exceptionsCount = 0, exceptionsLength = 0;
final MethodBinding theAbstractMethod = method;
boolean shouldEraseThrows = theAbstractMethod.typeVariables == Binding.NO_TYPE_VARIABLES && genericMethodSeen;
boolean shouldAdaptThrows = theAbstractMethod.typeVariables != Binding.NO_TYPE_VARIABLES;
final int typeVariableLength = theAbstractMethod.typeVariables.length;
none:for (i = 0; i < length; i++) {
method = methods[i];
ReferenceBinding[] methodThrownExceptions = method.thrownExceptions;
int methodExceptionsLength = methodThrownExceptions == null ? 0: methodThrownExceptions.length;
if (methodExceptionsLength == 0) break none;
if (shouldAdaptThrows && method != theAbstractMethod) {
System.arraycopy(methodThrownExceptions, 0, methodThrownExceptions = new ReferenceBinding[methodExceptionsLength], 0, methodExceptionsLength);
for (int tv = 0; tv < typeVariableLength; tv++) {
if (methodThrownExceptions[tv] instanceof TypeVariableBinding) {
methodThrownExceptions[tv] = theAbstractMethod.typeVariables[tv];
}
}
}
nextException: for (int j = 0; j < methodExceptionsLength; j++) {
ReferenceBinding methodException = methodThrownExceptions[j];
if (shouldEraseThrows)
methodException = (ReferenceBinding) methodException.erasure();
nextMethod: for (int k = 0; k < length; k++) {
if (i == k) continue;
otherMethod = methods[k];
ReferenceBinding[] otherMethodThrownExceptions = otherMethod.thrownExceptions;
int otherMethodExceptionsLength = otherMethodThrownExceptions == null ? 0 : otherMethodThrownExceptions.length;
if (otherMethodExceptionsLength == 0) break none;
if (shouldAdaptThrows && otherMethod != theAbstractMethod) {
System.arraycopy(otherMethodThrownExceptions,
0,
otherMethodThrownExceptions = new ReferenceBinding[otherMethodExceptionsLength],
0,
otherMethodExceptionsLength);
for (int tv = 0; tv < typeVariableLength; tv++) {
if (otherMethodThrownExceptions[tv] instanceof TypeVariableBinding) {
otherMethodThrownExceptions[tv] = theAbstractMethod.typeVariables[tv];
}
}
}
for (int l = 0; l < otherMethodExceptionsLength; l++) {
ReferenceBinding otherException = otherMethodThrownExceptions[l];
if (shouldEraseThrows)
otherException = (ReferenceBinding) otherException.erasure();
if (methodException.isCompatibleWith(otherException))
continue nextMethod;
}
continue nextException;
}
// If we reach here, method exception or its super type is covered by every throws clause.
if (exceptionsCount == exceptionsLength) {
System.arraycopy(exceptions, 0, exceptions = new ReferenceBinding[exceptionsLength += 16], 0, exceptionsCount);
}
exceptions[exceptionsCount++] = methodException;
}
}
if (exceptionsCount != exceptionsLength) {
System.arraycopy(exceptions, 0, exceptions = new ReferenceBinding[exceptionsCount], 0, exceptionsCount);
}
this.singleAbstractMethod[index] = new MethodBinding(theAbstractMethod.modifiers | ClassFileConstants.AccSynthetic,
theAbstractMethod.selector,
returnType,
parameters,
exceptions,
theAbstractMethod.declaringClass);
this.singleAbstractMethod[index].typeVariables = theAbstractMethod.typeVariables;
return this.singleAbstractMethod[index];
}
return this.singleAbstractMethod[index] = samProblemBinding;
}
// See JLS 4.9 bullet 1
public static boolean isConsistentIntersection(TypeBinding[] intersectingTypes) {
TypeBinding[] ci = new TypeBinding[intersectingTypes.length];
for (int i = 0; i < ci.length; i++) {
TypeBinding current = intersectingTypes[i];
ci[i] = (current.isClass() || current.isArrayType())
? current : current.superclass();
}
TypeBinding mostSpecific = ci[0];
for (int i = 1; i < ci.length; i++) {
TypeBinding current = ci[i];
// when invoked during type inference we only want to check inconsistency among real types:
if (current.isTypeVariable() || current.isWildcard() || !current.isProperType(true))
continue;
if (mostSpecific.isSubtypeOf(current))
continue;
else if (current.isSubtypeOf(mostSpecific))
mostSpecific = current;
else
return false;
}
return true;
}
}