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/*******************************************************************************
* Copyright (c) 2000, 2009 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
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;
import java.util.List;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.ClassFile;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Argument;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.codegen.ConstantPool;
import org.eclipse.jdt.internal.compiler.util.Util;
public class MethodBinding extends Binding {
public int modifiers;
public char[] selector;
public TypeBinding returnType;
public TypeBinding[] parameters;
public ReferenceBinding[] thrownExceptions;
public ReferenceBinding declaringClass;
public TypeVariableBinding[] typeVariables = Binding.NO_TYPE_VARIABLES;
char[] signature;
public long tagBits;
protected MethodBinding() {
// for creating problem or synthetic method
}
public MethodBinding(int modifiers, char[] selector, TypeBinding returnType, TypeBinding[] parameters, ReferenceBinding[] thrownExceptions, ReferenceBinding declaringClass) {
this.modifiers = modifiers;
this.selector = selector;
this.returnType = returnType;
this.parameters = (parameters == null || parameters.length == 0) ? Binding.NO_PARAMETERS : parameters;
this.thrownExceptions = (thrownExceptions == null || thrownExceptions.length == 0) ? Binding.NO_EXCEPTIONS : thrownExceptions;
this.declaringClass = declaringClass;
// propagate the strictfp & deprecated modifiers
if (this.declaringClass != null) {
if (this.declaringClass.isStrictfp())
if (!(isNative() || isAbstract()))
this.modifiers |= ClassFileConstants.AccStrictfp;
}
}
public MethodBinding(int modifiers, TypeBinding[] parameters, ReferenceBinding[] thrownExceptions, ReferenceBinding declaringClass) {
this(modifiers, TypeConstants.INIT, TypeBinding.VOID, parameters, thrownExceptions, declaringClass);
}
// special API used to change method declaring class for runtime visibility check
public MethodBinding(MethodBinding initialMethodBinding, ReferenceBinding declaringClass) {
this.modifiers = initialMethodBinding.modifiers;
this.selector = initialMethodBinding.selector;
this.returnType = initialMethodBinding.returnType;
this.parameters = initialMethodBinding.parameters;
this.thrownExceptions = initialMethodBinding.thrownExceptions;
this.declaringClass = declaringClass;
declaringClass.storeAnnotationHolder(this, initialMethodBinding.declaringClass.retrieveAnnotationHolder(initialMethodBinding, true));
}
/* Answer true if the argument types & the receiver's parameters have the same erasure
*/
public final boolean areParameterErasuresEqual(MethodBinding method) {
TypeBinding[] args = method.parameters;
if (this.parameters == args)
return true;
int length = this.parameters.length;
if (length != args.length)
return false;
for (int i = 0; i < length; i++)
if (this.parameters[i] != args[i] && this.parameters[i].erasure() != args[i].erasure())
return false;
return true;
}
/*
* Returns true if given parameters are compatible with this method parameters.
* Callers to this method should first check that the number of TypeBindings
* passed as argument matches this MethodBinding number of parameters
*/
public final boolean areParametersCompatibleWith(TypeBinding[] arguments) {
int paramLength = this.parameters.length;
int argLength = arguments.length;
int lastIndex = argLength;
if (isVarargs()) {
lastIndex = paramLength - 1;
if (paramLength == argLength) { // accept X[] but not X or X[][]
TypeBinding varArgType = this.parameters[lastIndex]; // is an ArrayBinding by definition
TypeBinding lastArgument = arguments[lastIndex];
if (varArgType != lastArgument && !lastArgument.isCompatibleWith(varArgType))
return false;
} else if (paramLength < argLength) { // all remainig argument types must be compatible with the elementsType of varArgType
TypeBinding varArgType = ((ArrayBinding) this.parameters[lastIndex]).elementsType();
for (int i = lastIndex; i < argLength; i++)
if (varArgType != arguments[i] && !arguments[i].isCompatibleWith(varArgType))
return false;
} else if (lastIndex != argLength) { // can call foo(int i, X ... x) with foo(1) but NOT foo();
return false;
}
// now compare standard arguments from 0 to lastIndex
}
for (int i = 0; i < lastIndex; i++)
if (this.parameters[i] != arguments[i] && !arguments[i].isCompatibleWith(this.parameters[i]))
return false;
return true;
}
/* Answer true if the argument types & the receiver's parameters are equal
*/
public final boolean areParametersEqual(MethodBinding method) {
TypeBinding[] args = method.parameters;
if (this.parameters == args)
return true;
int length = this.parameters.length;
if (length != args.length)
return false;
for (int i = 0; i < length; i++)
if (this.parameters[i] != args[i])
return false;
return true;
}
/* API
* Answer the receiver's binding type from Binding.BindingID.
*/
/* Answer true if the type variables have the same erasure
*/
public final boolean areTypeVariableErasuresEqual(MethodBinding method) {
TypeVariableBinding[] vars = method.typeVariables;
if (this.typeVariables == vars)
return true;
int length = this.typeVariables.length;
if (length != vars.length)
return false;
for (int i = 0; i < length; i++)
if (this.typeVariables[i] != vars[i] && this.typeVariables[i].erasure() != vars[i].erasure())
return false;
return true;
}
MethodBinding asRawMethod(LookupEnvironment env) {
if (this.typeVariables == Binding.NO_TYPE_VARIABLES) return this;
// substitute type arguments with raw types
int length = this.typeVariables.length;
TypeBinding[] arguments = new TypeBinding[length];
for (int i = 0; i < length; i++) {
TypeVariableBinding var = this.typeVariables[i];
if (var.boundsCount() <= 1) {
arguments[i] = env.convertToRawType(var.upperBound(), false /*do not force conversion of enclosing types*/);
} else {
// use an intersection type to retain full bound information if more than 1 bound
TypeBinding rawSuperclass = env.convertToRawType(var.superclass(), false);
TypeBinding[] itsSuperinterfaces = var.superInterfaces();
int superLength = itsSuperinterfaces.length;
TypeBinding[] rawSuperinterfaces = new TypeBinding[superLength];
for (int s = 0; s < superLength; s++)
rawSuperinterfaces[s] = env.convertToRawType(itsSuperinterfaces[s], false);
arguments[i] = env.createWildcard(null, 0, rawSuperclass, rawSuperinterfaces, org.eclipse.jdt.internal.compiler.ast.Wildcard.EXTENDS);
}
}
return env.createParameterizedGenericMethod(this, arguments);
}
/* Answer true if the receiver is visible to the type provided by the scope.
* InvocationSite implements isSuperAccess() to provide additional information
* if the receiver is protected.
*
* NOTE: This method should ONLY be sent if the receiver is a constructor.
*
* NOTE: Cannot invoke this method with a compilation unit scope.
*/
public final boolean canBeSeenBy(InvocationSite invocationSite, Scope scope) {
if (isPublic()) return true;
SourceTypeBinding invocationType = scope.enclosingSourceType();
if (invocationType == this.declaringClass) return true;
if (isProtected()) {
// answer true if the receiver is in the same package as the invocationType
if (invocationType.fPackage == this.declaringClass.fPackage) return true;
return invocationSite.isSuperAccess();
}
if (isPrivate()) {
// answer true if the invocationType and the declaringClass 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)this.declaringClass.erasure();
temp = outerDeclaringClass.enclosingType();
while (temp != null) {
outerDeclaringClass = temp;
temp = temp.enclosingType();
}
return outerInvocationType == outerDeclaringClass;
}
// isDefault()
return invocationType.fPackage == this.declaringClass.fPackage;
}
public final boolean canBeSeenBy(PackageBinding invocationPackage) {
if (isPublic()) return true;
if (isPrivate()) return false;
// isProtected() or isDefault()
return invocationPackage == this.declaringClass.getPackage();
}
/* Answer true if the receiver is visible to the type provided by the scope.
* InvocationSite implements isSuperAccess() to provide additional information
* if the receiver is protected.
*
* NOTE: Cannot invoke this method with a compilation unit scope.
*/
public final boolean canBeSeenBy(TypeBinding receiverType, InvocationSite invocationSite, Scope scope) {
if (isPublic()) return true;
SourceTypeBinding invocationType = scope.enclosingSourceType();
if (invocationType == this.declaringClass && invocationType == receiverType) return true;
if (invocationType == null) // static import call
return !isPrivate() && scope.getCurrentPackage() == this.declaringClass.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 receiverType is the invocationType or its subclass
// OR the method is a static method accessed directly through a type
// OR previous assertions are true for one of the enclosing type
if (invocationType == this.declaringClass) return true;
if (invocationType.fPackage == this.declaringClass.fPackage) return true;
ReferenceBinding currentType = invocationType;
TypeBinding receiverErasure = receiverType.erasure();
ReferenceBinding declaringErasure = (ReferenceBinding) this.declaringClass.erasure();
int depth = 0;
do {
if (currentType.findSuperTypeOriginatingFrom(declaringErasure) != null) {
if (invocationSite.isSuperAccess())
return true;
// receiverType can be an array binding in one case... see if you can change it
if (receiverType instanceof ArrayBinding)
return false;
if (isStatic()) {
if (depth > 0) invocationSite.setDepth(depth);
return true; // see 1FMEPDL - return invocationSite.isTypeAccess();
}
if (currentType == receiverErasure || receiverErasure.findSuperTypeOriginatingFrom(currentType) != null) {
if (depth > 0) invocationSite.setDepth(depth);
return true;
}
}
depth++;
currentType = currentType.enclosingType();
} while (currentType != null);
return false;
}
if (isPrivate()) {
// answer true if the receiverType is the declaringClass
// AND the invocationType and the declaringClass have a common enclosingType
receiverCheck: {
if (receiverType != this.declaringClass) {
// special tolerance for type variable direct bounds
if (receiverType.isTypeVariable() && ((TypeVariableBinding) receiverType).isErasureBoundTo(this.declaringClass.erasure()))
break receiverCheck;
return false;
}
}
if (invocationType != this.declaringClass) {
ReferenceBinding outerInvocationType = invocationType;
ReferenceBinding temp = outerInvocationType.enclosingType();
while (temp != null) {
outerInvocationType = temp;
temp = temp.enclosingType();
}
ReferenceBinding outerDeclaringClass = (ReferenceBinding)this.declaringClass.erasure();
temp = outerDeclaringClass.enclosingType();
while (temp != null) {
outerDeclaringClass = temp;
temp = temp.enclosingType();
}
if (outerInvocationType != outerDeclaringClass) return false;
}
return true;
}
// isDefault()
PackageBinding declaringPackage = this.declaringClass.fPackage;
if (invocationType.fPackage != declaringPackage) return false;
// receiverType can be an array binding in one case... see if you can change it
if (receiverType instanceof ArrayBinding)
return false;
TypeBinding originalDeclaringClass = this.declaringClass.original();
ReferenceBinding currentType = (ReferenceBinding) receiverType;
do {
if (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 != declaringPackage) return false;
} while ((currentType = currentType.superclass()) != null);
return false;
}
public List collectMissingTypes(List missingTypes) {
if ((this.tagBits & TagBits.HasMissingType) != 0) {
missingTypes = this.returnType.collectMissingTypes(missingTypes);
for (int i = 0, max = this.parameters.length; i < max; i++) {
missingTypes = this.parameters[i].collectMissingTypes(missingTypes);
}
for (int i = 0, max = this.thrownExceptions.length; i < max; i++) {
missingTypes = this.thrownExceptions[i].collectMissingTypes(missingTypes);
}
for (int i = 0, max = this.typeVariables.length; i < max; i++) {
TypeVariableBinding variable = this.typeVariables[i];
missingTypes = variable.superclass().collectMissingTypes(missingTypes);
ReferenceBinding[] interfaces = variable.superInterfaces();
for (int j = 0, length = interfaces.length; j < length; j++) {
missingTypes = interfaces[j].collectMissingTypes(missingTypes);
}
}
}
return missingTypes;
}
MethodBinding computeSubstitutedMethod(MethodBinding method, LookupEnvironment env) {
int length = this.typeVariables.length;
TypeVariableBinding[] vars = method.typeVariables;
if (length != vars.length)
return null;
// must substitute to detect cases like:
// > void dup() {}
// > Object dup() {return null;}
ParameterizedGenericMethodBinding substitute =
env.createParameterizedGenericMethod(method, this.typeVariables);
for (int i = 0; i < length; i++)
if (!this.typeVariables[i].isInterchangeableWith(vars[i], substitute))
return null;
return substitute;
}
/*
* declaringUniqueKey dot selector genericSignature
* p.X { void bar(X t) } --> Lp/X;.bar(LX;)V
*/
public char[] computeUniqueKey(boolean isLeaf) {
// declaring class
char[] declaringKey = this.declaringClass.computeUniqueKey(false/*not a leaf*/);
int declaringLength = declaringKey.length;
// selector
int selectorLength = this.selector == TypeConstants.INIT ? 0 : this.selector.length;
// generic signature
char[] sig = genericSignature();
boolean isGeneric = sig != null;
if (!isGeneric) sig = signature();
int signatureLength = sig.length;
// thrown exceptions
int thrownExceptionsLength = this.thrownExceptions.length;
int thrownExceptionsSignatureLength = 0;
char[][] thrownExceptionsSignatures = null;
boolean addThrownExceptions = thrownExceptionsLength > 0 && (!isGeneric || CharOperation.lastIndexOf('^', sig) < 0);
if (addThrownExceptions) {
thrownExceptionsSignatures = new char[thrownExceptionsLength][];
for (int i = 0; i < thrownExceptionsLength; i++) {
if (this.thrownExceptions[i] != null) {
thrownExceptionsSignatures[i] = this.thrownExceptions[i].signature();
thrownExceptionsSignatureLength += thrownExceptionsSignatures[i].length + 1; // add one char for separator
}
}
}
char[] uniqueKey = new char[declaringLength + 1 + selectorLength + signatureLength + thrownExceptionsSignatureLength];
int index = 0;
System.arraycopy(declaringKey, 0, uniqueKey, index, declaringLength);
index = declaringLength;
uniqueKey[index++] = '.';
System.arraycopy(this.selector, 0, uniqueKey, index, selectorLength);
index += selectorLength;
System.arraycopy(sig, 0, uniqueKey, index, signatureLength);
if (thrownExceptionsSignatureLength > 0) {
index += signatureLength;
for (int i = 0; i < thrownExceptionsLength; i++) {
char[] thrownExceptionSignature = thrownExceptionsSignatures[i];
if (thrownExceptionSignature != null) {
uniqueKey[index++] = '|';
int length = thrownExceptionSignature.length;
System.arraycopy(thrownExceptionSignature, 0, uniqueKey, index, length);
index += length;
}
}
}
return uniqueKey;
}
/* Answer the receiver's constant pool name.
*
* for constructors
* for clinit methods
* or the source name of the method
*/
public final char[] constantPoolName() {
return this.selector;
}
/**
*
*/
public char[] genericSignature() {
if ((this.modifiers & ExtraCompilerModifiers.AccGenericSignature) == 0) return null;
StringBuffer sig = new StringBuffer(10);
if (this.typeVariables != Binding.NO_TYPE_VARIABLES) {
sig.append('<');
for (int i = 0, length = this.typeVariables.length; i < length; i++) {
sig.append(this.typeVariables[i].genericSignature());
}
sig.append('>');
}
sig.append('(');
for (int i = 0, length = this.parameters.length; i < length; i++) {
sig.append(this.parameters[i].genericTypeSignature());
}
sig.append(')');
if (this.returnType != null)
sig.append(this.returnType.genericTypeSignature());
// only append thrown exceptions if any is generic/parameterized
boolean needExceptionSignatures = false;
int length = this.thrownExceptions.length;
for (int i = 0; i < length; i++) {
if((this.thrownExceptions[i].modifiers & ExtraCompilerModifiers.AccGenericSignature) != 0) {
needExceptionSignatures = true;
break;
}
}
if (needExceptionSignatures) {
for (int i = 0; i < length; i++) {
sig.append('^');
sig.append(this.thrownExceptions[i].genericTypeSignature());
}
}
int sigLength = sig.length();
char[] genericSignature = new char[sigLength];
sig.getChars(0, sigLength, genericSignature, 0);
return genericSignature;
}
public final int getAccessFlags() {
return this.modifiers & ExtraCompilerModifiers.AccJustFlag;
}
public AnnotationBinding[] getAnnotations() {
MethodBinding originalMethod = original();
return originalMethod.declaringClass.retrieveAnnotations(originalMethod);
}
/**
* Compute the tagbits for standard annotations. For source types, these could require
* lazily resolving corresponding annotation nodes, in case of forward references.
* @see org.eclipse.jdt.internal.compiler.lookup.Binding#getAnnotationTagBits()
*/
public long getAnnotationTagBits() {
MethodBinding originalMethod = original();
if ((originalMethod.tagBits & TagBits.AnnotationResolved) == 0 && originalMethod.declaringClass instanceof SourceTypeBinding) {
ClassScope scope = ((SourceTypeBinding) originalMethod.declaringClass).scope;
if (scope != null) {
TypeDeclaration typeDecl = scope.referenceContext;
AbstractMethodDeclaration methodDecl = typeDecl.declarationOf(originalMethod);
if (methodDecl != null)
ASTNode.resolveAnnotations(methodDecl.scope, methodDecl.annotations, originalMethod);
}
}
return originalMethod.tagBits;
}
/**
* @return the default value for this annotation method or null if there is no default value
*/
public Object getDefaultValue() {
MethodBinding originalMethod = original();
if ((originalMethod.tagBits & TagBits.DefaultValueResolved) == 0) {
//The method has not been resolved nor has its class been resolved.
//It can only be from a source type within compilation units to process.
if (originalMethod.declaringClass instanceof SourceTypeBinding) {
SourceTypeBinding sourceType = (SourceTypeBinding) originalMethod.declaringClass;
if (sourceType.scope != null) {
AbstractMethodDeclaration methodDeclaration = originalMethod.sourceMethod();
if (methodDeclaration != null && methodDeclaration.isAnnotationMethod()) {
methodDeclaration.resolve(sourceType.scope);
}
}
}
originalMethod.tagBits |= TagBits.DefaultValueResolved;
}
AnnotationHolder holder = originalMethod.declaringClass.retrieveAnnotationHolder(originalMethod, true);
return holder == null ? null : holder.getDefaultValue();
}
/**
* Return the highest method/constructor in supertype hierarchy with same selector and arguments
*/
public MethodBinding getHighestOverridenMethod(LookupEnvironment environment) {
MethodBinding bestMethod = this;
ReferenceBinding currentType = this.declaringClass;
if (this.isConstructor()) {
// walk superclasses - only
do {
MethodBinding superMethod = currentType.getExactConstructor(this.parameters);
if (superMethod != null) {
bestMethod = superMethod;
}
} while ((currentType = currentType.superclass()) != null);
return bestMethod;
}
MethodVerifier verifier = environment.methodVerifier();
// walk superclasses
ReferenceBinding[] interfacesToVisit = null;
int nextPosition = 0;
do {
MethodBinding[] superMethods = currentType.getMethods(this.selector);
for (int i = 0, length = superMethods.length; i < length; i++) {
if (verifier.doesMethodOverride(this, superMethods[i])) {
bestMethod = superMethods[i];
break;
}
}
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 (next == interfacesToVisit[b]) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
} while ((currentType = currentType.superclass()) != null);
if (bestMethod.declaringClass.id == TypeIds.T_JavaLangObject) {
return bestMethod;
}
// walk superinterfaces
for (int i = 0; i < nextPosition; i++) {
currentType = interfacesToVisit[i];
MethodBinding[] superMethods = currentType.getMethods(this.selector);
for (int j = 0, length = superMethods.length; j < length; j++) {
MethodBinding superMethod = superMethods[j];
if (verifier.doesMethodOverride(this, superMethod)) {
TypeBinding bestReturnType = bestMethod.returnType;
if (bestReturnType == superMethod.returnType
|| bestMethod.returnType.findSuperTypeOriginatingFrom(superMethod.returnType) != null) {
bestMethod = superMethod;
}
break;
}
}
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 (next == interfacesToVisit[b]) continue nextInterface;
interfacesToVisit[nextPosition++] = next;
}
}
}
return bestMethod;
}
/**
* @return the annotations for each of the method parameters or null>
* if there's no parameter or no annotation at all.
*/
public AnnotationBinding[][] getParameterAnnotations() {
int length;
if ((length = this.parameters.length) == 0) {
return null;
}
MethodBinding originalMethod = original();
AnnotationHolder holder = originalMethod.declaringClass.retrieveAnnotationHolder(originalMethod, true);
AnnotationBinding[][] allParameterAnnotations = holder == null ? null : holder.getParameterAnnotations();
if (allParameterAnnotations == null && (this.tagBits & TagBits.HasParameterAnnotations) != 0) {
allParameterAnnotations = new AnnotationBinding[length][];
// forward reference to method, where param annotations have not yet been associated to method
if (this.declaringClass instanceof SourceTypeBinding) {
SourceTypeBinding sourceType = (SourceTypeBinding) this.declaringClass;
if (sourceType.scope != null) {
AbstractMethodDeclaration methodDecl = sourceType.scope.referenceType().declarationOf(this);
for (int i = 0; i < length; i++) {
Argument argument = methodDecl.arguments[i];
if (argument.annotations != null) {
ASTNode.resolveAnnotations(methodDecl.scope, argument.annotations, argument.binding);
allParameterAnnotations[i] = argument.binding.getAnnotations();
} else {
allParameterAnnotations[i] = Binding.NO_ANNOTATIONS;
}
}
} else {
for (int i = 0; i < length; i++) {
allParameterAnnotations[i] = Binding.NO_ANNOTATIONS;
}
}
} else {
for (int i = 0; i < length; i++) {
allParameterAnnotations[i] = Binding.NO_ANNOTATIONS;
}
}
setParameterAnnotations(allParameterAnnotations);
}
return allParameterAnnotations;
}
public TypeVariableBinding getTypeVariable(char[] variableName) {
for (int i = this.typeVariables.length; --i >= 0;)
if (CharOperation.equals(this.typeVariables[i].sourceName, variableName))
return this.typeVariables[i];
return null;
}
/**
* Returns true if method got substituted parameter types
* (see ParameterizedMethodBinding)
*/
public boolean hasSubstitutedParameters() {
return false;
}
/* Answer true if the return type got substituted.
*/
public boolean hasSubstitutedReturnType() {
return false;
}
/* Answer true if the receiver is an abstract method
*/
public final boolean isAbstract() {
return (this.modifiers & ClassFileConstants.AccAbstract) != 0;
}
/* Answer true if the receiver is a bridge method
*/
public final boolean isBridge() {
return (this.modifiers & ClassFileConstants.AccBridge) != 0;
}
/* Answer true if the receiver is a constructor
*/
public final boolean isConstructor() {
return this.selector == TypeConstants.INIT;
}
/* Answer true if the receiver has default visibility
*/
public final boolean isDefault() {
return !isPublic() && !isProtected() && !isPrivate();
}
/* Answer true if the receiver is a system generated default abstract method
*/
public final boolean isDefaultAbstract() {
return (this.modifiers & ExtraCompilerModifiers.AccDefaultAbstract) != 0;
}
/* Answer true if the receiver is a deprecated method
*/
public final boolean isDeprecated() {
return (this.modifiers & ClassFileConstants.AccDeprecated) != 0;
}
/* Answer true if the receiver is final and cannot be overridden
*/
public final boolean isFinal() {
return (this.modifiers & ClassFileConstants.AccFinal) != 0;
}
/* Answer true if the receiver is implementing another method
* in other words, it is overriding and concrete, and overriden method is abstract
* Only set for source methods
*/
public final boolean isImplementing() {
return (this.modifiers & ExtraCompilerModifiers.AccImplementing) != 0;
}
/*
* Answer true if the receiver is a "public static void main(String[])" method
*/
public final boolean isMain() {
if (this.selector.length == 4 && CharOperation.equals(this.selector, TypeConstants.MAIN)
&& ((this.modifiers & (ClassFileConstants.AccPublic | ClassFileConstants.AccStatic)) != 0)
&& TypeBinding.VOID == this.returnType
&& this.parameters.length == 1) {
TypeBinding paramType = this.parameters[0];
if (paramType.dimensions() == 1 && paramType.leafComponentType().id == TypeIds.T_JavaLangString) {
return true;
}
}
return false;
}
/* Answer true if the receiver is a native method
*/
public final boolean isNative() {
return (this.modifiers & ClassFileConstants.AccNative) != 0;
}
/* Answer true if the receiver is overriding another method
* Only set for source methods
*/
public final boolean isOverriding() {
return (this.modifiers & ExtraCompilerModifiers.AccOverriding) != 0;
}
/* Answer true if the receiver has private visibility
*/
public final boolean isPrivate() {
return (this.modifiers & ClassFileConstants.AccPrivate) != 0;
}
/* Answer true if the receiver has private visibility or if any of its enclosing types do.
*/
public final boolean isOrEnclosedByPrivateType() {
if ((this.modifiers & ClassFileConstants.AccPrivate) != 0)
return true;
return this.declaringClass != null && this.declaringClass.isOrEnclosedByPrivateType();
}
/* 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 method
*/
public final boolean isStatic() {
return (this.modifiers & ClassFileConstants.AccStatic) != 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 a synchronized method
*/
public final boolean isSynchronized() {
return (this.modifiers & ClassFileConstants.AccSynchronized) != 0;
}
/* Answer true if the receiver has public visibility
*/
public final boolean isSynthetic() {
return (this.modifiers & ClassFileConstants.AccSynthetic) != 0;
}
/* 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 method has varargs
*/
public final boolean isVarargs() {
return (this.modifiers & ClassFileConstants.AccVarargs) != 0;
}
/* Answer true if the receiver's declaring type is deprecated (or any of its enclosing types)
*/
public final boolean isViewedAsDeprecated() {
return (this.modifiers & (ClassFileConstants.AccDeprecated | ExtraCompilerModifiers.AccDeprecatedImplicitly)) != 0;
}
public final int kind() {
return Binding.METHOD;
}
/* Answer true if the receiver is visible to the invocationPackage.
*/
/**
* Returns the original method (as opposed to parameterized instances)
*/
public MethodBinding original() {
return this;
}
public char[] readableName() /* foo(int, Thread) */ {
StringBuffer buffer = new StringBuffer(this.parameters.length + 1 * 20);
if (isConstructor())
buffer.append(this.declaringClass.sourceName());
else
buffer.append(this.selector);
buffer.append('(');
if (this.parameters != Binding.NO_PARAMETERS) {
for (int i = 0, length = this.parameters.length; i < length; i++) {
if (i > 0)
buffer.append(", "); //$NON-NLS-1$
buffer.append(this.parameters[i].sourceName());
}
}
buffer.append(')');
return buffer.toString().toCharArray();
}
public void setAnnotations(AnnotationBinding[] annotations) {
this.declaringClass.storeAnnotations(this, annotations);
}
public void setAnnotations(AnnotationBinding[] annotations, AnnotationBinding[][] parameterAnnotations, Object defaultValue, LookupEnvironment optionalEnv) {
this.declaringClass.storeAnnotationHolder(this, AnnotationHolder.storeAnnotations(annotations, parameterAnnotations, defaultValue, optionalEnv));
}
public void setDefaultValue(Object defaultValue) {
MethodBinding originalMethod = original();
originalMethod.tagBits |= TagBits.DefaultValueResolved;
AnnotationHolder holder = this.declaringClass.retrieveAnnotationHolder(this, false);
if (holder == null)
setAnnotations(null, null, defaultValue, null);
else
setAnnotations(holder.getAnnotations(), holder.getParameterAnnotations(), defaultValue, null);
}
public void setParameterAnnotations(AnnotationBinding[][] parameterAnnotations) {
AnnotationHolder holder = this.declaringClass.retrieveAnnotationHolder(this, false);
if (holder == null)
setAnnotations(null, parameterAnnotations, null, null);
else
setAnnotations(holder.getAnnotations(), parameterAnnotations, holder.getDefaultValue(), null);
}
protected final void setSelector(char[] selector) {
this.selector = selector;
this.signature = null;
}
/**
* @see org.eclipse.jdt.internal.compiler.lookup.Binding#shortReadableName()
*/
public char[] shortReadableName() {
StringBuffer buffer = new StringBuffer(this.parameters.length + 1 * 20);
if (isConstructor())
buffer.append(this.declaringClass.shortReadableName());
else
buffer.append(this.selector);
buffer.append('(');
if (this.parameters != Binding.NO_PARAMETERS) {
for (int i = 0, length = this.parameters.length; i < length; i++) {
if (i > 0)
buffer.append(", "); //$NON-NLS-1$
buffer.append(this.parameters[i].shortReadableName());
}
}
buffer.append(')');
int nameLength = buffer.length();
char[] shortReadableName = new char[nameLength];
buffer.getChars(0, nameLength, shortReadableName, 0);
return shortReadableName;
}
/* Answer the receiver's signature.
*
* NOTE: This method should only be used during/after code gen.
* The signature is cached so if the signature of the return type or any parameter
* type changes, the cached state is invalid.
*/
public final char[] signature() /* (ILjava/lang/Thread;)Ljava/lang/Object; */ {
if (this.signature != null)
return this.signature;
StringBuffer buffer = new StringBuffer(this.parameters.length + 1 * 20);
buffer.append('(');
TypeBinding[] targetParameters = this.parameters;
boolean isConstructor = isConstructor();
if (isConstructor && this.declaringClass.isEnum()) { // insert String name,int ordinal
buffer.append(ConstantPool.JavaLangStringSignature);
buffer.append(TypeBinding.INT.signature());
}
boolean needSynthetics = isConstructor && this.declaringClass.isNestedType();
if (needSynthetics) {
// take into account the synthetic argument type signatures as well
ReferenceBinding[] syntheticArgumentTypes = this.declaringClass.syntheticEnclosingInstanceTypes();
if (syntheticArgumentTypes != null) {
for (int i = 0, count = syntheticArgumentTypes.length; i < count; i++) {
buffer.append(syntheticArgumentTypes[i].signature());
}
}
if (this instanceof SyntheticMethodBinding) {
targetParameters = ((SyntheticMethodBinding)this).targetMethod.parameters;
}
}
if (targetParameters != Binding.NO_PARAMETERS) {
for (int i = 0; i < targetParameters.length; i++) {
buffer.append(targetParameters[i].signature());
}
}
if (needSynthetics) {
SyntheticArgumentBinding[] syntheticOuterArguments = this.declaringClass.syntheticOuterLocalVariables();
int count = syntheticOuterArguments == null ? 0 : syntheticOuterArguments.length;
for (int i = 0; i < count; i++) {
buffer.append(syntheticOuterArguments[i].type.signature());
}
// move the extra padding arguments of the synthetic constructor invocation to the end
for (int i = targetParameters.length, extraLength = this.parameters.length; i < extraLength; i++) {
buffer.append(this.parameters[i].signature());
}
}
buffer.append(')');
if (this.returnType != null)
buffer.append(this.returnType.signature());
int nameLength = buffer.length();
this.signature = new char[nameLength];
buffer.getChars(0, nameLength, this.signature, 0);
return this.signature;
}
/*
* This method is used to record references to nested types inside the method signature.
* This is the one that must be used during code generation.
*
* See https://bugs.eclipse.org/bugs/show_bug.cgi?id=171184
*/
public final char[] signature(ClassFile classFile) {
if (this.signature != null) {
if ((this.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
// we need to record inner classes references
boolean isConstructor = isConstructor();
TypeBinding[] targetParameters = this.parameters;
boolean needSynthetics = isConstructor && this.declaringClass.isNestedType();
if (needSynthetics) {
// take into account the synthetic argument type signatures as well
ReferenceBinding[] syntheticArgumentTypes = this.declaringClass.syntheticEnclosingInstanceTypes();
if (syntheticArgumentTypes != null) {
for (int i = 0, count = syntheticArgumentTypes.length; i < count; i++) {
ReferenceBinding syntheticArgumentType = syntheticArgumentTypes[i];
if ((syntheticArgumentType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
Util.recordNestedType(classFile, syntheticArgumentType);
}
}
}
if (this instanceof SyntheticMethodBinding) {
targetParameters = ((SyntheticMethodBinding)this).targetMethod.parameters;
}
}
if (targetParameters != Binding.NO_PARAMETERS) {
for (int i = 0, max = targetParameters.length; i < max; i++) {
TypeBinding targetParameter = targetParameters[i];
TypeBinding leafTargetParameterType = targetParameter.leafComponentType();
if ((leafTargetParameterType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
Util.recordNestedType(classFile, leafTargetParameterType);
}
}
}
if (needSynthetics) {
// move the extra padding arguments of the synthetic constructor invocation to the end
for (int i = targetParameters.length, extraLength = this.parameters.length; i < extraLength; i++) {
TypeBinding parameter = this.parameters[i];
TypeBinding leafParameterType = parameter.leafComponentType();
if ((leafParameterType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
Util.recordNestedType(classFile, leafParameterType);
}
}
}
if (this.returnType != null) {
TypeBinding ret = this.returnType.leafComponentType();
if ((ret.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
Util.recordNestedType(classFile, ret);
}
}
}
return this.signature;
}
StringBuffer buffer = new StringBuffer(this.parameters.length + 1 * 20);
buffer.append('(');
TypeBinding[] targetParameters = this.parameters;
boolean isConstructor = isConstructor();
if (isConstructor && this.declaringClass.isEnum()) { // insert String name,int ordinal
buffer.append(ConstantPool.JavaLangStringSignature);
buffer.append(TypeBinding.INT.signature());
}
boolean needSynthetics = isConstructor && this.declaringClass.isNestedType();
if (needSynthetics) {
// take into account the synthetic argument type signatures as well
ReferenceBinding[] syntheticArgumentTypes = this.declaringClass.syntheticEnclosingInstanceTypes();
if (syntheticArgumentTypes != null) {
for (int i = 0, count = syntheticArgumentTypes.length; i < count; i++) {
ReferenceBinding syntheticArgumentType = syntheticArgumentTypes[i];
if ((syntheticArgumentType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
this.tagBits |= TagBits.ContainsNestedTypeReferences;
Util.recordNestedType(classFile, syntheticArgumentType);
}
buffer.append(syntheticArgumentType.signature());
}
}
if (this instanceof SyntheticMethodBinding) {
targetParameters = ((SyntheticMethodBinding)this).targetMethod.parameters;
}
}
if (targetParameters != Binding.NO_PARAMETERS) {
for (int i = 0, max = targetParameters.length; i < max; i++) {
TypeBinding targetParameter = targetParameters[i];
TypeBinding leafTargetParameterType = targetParameter.leafComponentType();
if ((leafTargetParameterType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
this.tagBits |= TagBits.ContainsNestedTypeReferences;
Util.recordNestedType(classFile, leafTargetParameterType);
}
buffer.append(targetParameter.signature());
}
}
if (needSynthetics) {
SyntheticArgumentBinding[] syntheticOuterArguments = this.declaringClass.syntheticOuterLocalVariables();
int count = syntheticOuterArguments == null ? 0 : syntheticOuterArguments.length;
for (int i = 0; i < count; i++) {
buffer.append(syntheticOuterArguments[i].type.signature());
}
// move the extra padding arguments of the synthetic constructor invocation to the end
for (int i = targetParameters.length, extraLength = this.parameters.length; i < extraLength; i++) {
TypeBinding parameter = this.parameters[i];
TypeBinding leafParameterType = parameter.leafComponentType();
if ((leafParameterType.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
this.tagBits |= TagBits.ContainsNestedTypeReferences;
Util.recordNestedType(classFile, leafParameterType);
}
buffer.append(parameter.signature());
}
}
buffer.append(')');
if (this.returnType != null) {
TypeBinding ret = this.returnType.leafComponentType();
if ((ret.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
this.tagBits |= TagBits.ContainsNestedTypeReferences;
Util.recordNestedType(classFile, ret);
}
buffer.append(this.returnType.signature());
}
int nameLength = buffer.length();
this.signature = new char[nameLength];
buffer.getChars(0, nameLength, this.signature, 0);
return this.signature;
}
public final int sourceEnd() {
AbstractMethodDeclaration method = sourceMethod();
if (method == null) {
if (this.declaringClass instanceof SourceTypeBinding)
return ((SourceTypeBinding) this.declaringClass).sourceEnd();
return 0;
}
return method.sourceEnd;
}
public AbstractMethodDeclaration sourceMethod() {
SourceTypeBinding sourceType;
try {
sourceType = (SourceTypeBinding) this.declaringClass;
} catch (ClassCastException e) {
return null;
}
AbstractMethodDeclaration[] methods = sourceType.scope.referenceContext.methods;
for (int i = methods.length; --i >= 0;)
if (this == methods[i].binding)
return methods[i];
return null;
}
public final int sourceStart() {
AbstractMethodDeclaration method = sourceMethod();
if (method == null) {
if (this.declaringClass instanceof SourceTypeBinding)
return ((SourceTypeBinding) this.declaringClass).sourceStart();
return 0;
}
return method.sourceStart;
}
/**
* Returns the method to use during tiebreak (usually the method itself).
* For generic method invocations, tiebreak needs to use generic method with erasure substitutes.
*/
public MethodBinding tiebreakMethod() {
return this;
}
public String toString() {
StringBuffer output = new StringBuffer(10);
if ((this.modifiers & ExtraCompilerModifiers.AccUnresolved) != 0) {
output.append("[unresolved] "); //$NON-NLS-1$
}
ASTNode.printModifiers(this.modifiers, output);
output.append(this.returnType != null ? this.returnType.debugName() : ""); //$NON-NLS-1$
output.append(" "); //$NON-NLS-1$
output.append(this.selector != null ? new String(this.selector) : ""); //$NON-NLS-1$
output.append("("); //$NON-NLS-1$
if (this.parameters != null) {
if (this.parameters != Binding.NO_PARAMETERS) {
for (int i = 0, length = this.parameters.length; i < length; i++) {
if (i > 0)
output.append(", "); //$NON-NLS-1$
output.append(this.parameters[i] != null ? this.parameters[i].debugName() : ""); //$NON-NLS-1$
}
}
} else {
output.append(""); //$NON-NLS-1$
}
output.append(") "); //$NON-NLS-1$
if (this.thrownExceptions != null) {
if (this.thrownExceptions != Binding.NO_EXCEPTIONS) {
output.append("throws "); //$NON-NLS-1$
for (int i = 0, length = this.thrownExceptions.length; i < length; i++) {
if (i > 0)
output.append(", "); //$NON-NLS-1$
output.append((this.thrownExceptions[i] != null) ? this.thrownExceptions[i].debugName() : ""); //$NON-NLS-1$
}
}
} else {
output.append(""); //$NON-NLS-1$
}
return output.toString();
}
public TypeVariableBinding[] typeVariables() {
return this.typeVariables;
}
}
