| /******************************************************************************* |
| * Copyright (c) 2005, 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.ast.TypeReference; |
| import org.eclipse.jdt.internal.compiler.ast.Wildcard; |
| |
| /** |
| * A parameterized type encapsulates a type with type arguments, |
| */ |
| public class ParameterizedTypeBinding extends ReferenceBinding implements Substitution { |
| |
| private ReferenceBinding type; // must ensure the type is resolved |
| public TypeBinding[] arguments; |
| public LookupEnvironment environment; |
| public char[] genericTypeSignature; |
| public ReferenceBinding superclass; |
| public ReferenceBinding[] superInterfaces; |
| public FieldBinding[] fields; |
| public ReferenceBinding[] memberTypes; |
| public MethodBinding[] methods; |
| private ReferenceBinding enclosingType; |
| |
| public ParameterizedTypeBinding(ReferenceBinding type, TypeBinding[] arguments, ReferenceBinding enclosingType, LookupEnvironment environment){ |
| this.environment = environment; |
| this.enclosingType = enclosingType; // never unresolved, never lazy per construction |
| // if (enclosingType != null && enclosingType.isGenericType()) { |
| // RuntimeException e = new RuntimeException("PARAM TYPE with GENERIC ENCLOSING"); |
| // e.printStackTrace(); |
| // throw e; |
| // } |
| // if (!(type instanceof UnresolvedReferenceBinding) && type.typeVariables() == Binding.NO_TYPE_VARIABLES) { |
| // System.out.println(); |
| // } |
| initialize(type, arguments); |
| if (type instanceof UnresolvedReferenceBinding) |
| ((UnresolvedReferenceBinding) type).addWrapper(this, environment); |
| if (arguments != null) { |
| for (int i = 0, l = arguments.length; i < l; i++) |
| if (arguments[i] instanceof UnresolvedReferenceBinding) |
| ((UnresolvedReferenceBinding) arguments[i]).addWrapper(this, environment); |
| } |
| this.tagBits |= TagBits.HasUnresolvedTypeVariables; // cleared in resolve() |
| } |
| |
| /** |
| * May return an UnresolvedReferenceBinding. |
| * @see ParameterizedTypeBinding#genericType() |
| */ |
| protected ReferenceBinding actualType() { |
| return this.type; |
| } |
| |
| /** |
| * Iterate type arguments, and validate them according to corresponding variable bounds. |
| */ |
| public void boundCheck(Scope scope, TypeReference[] argumentReferences) { |
| if ((this.tagBits & TagBits.PassedBoundCheck) == 0) { |
| boolean hasErrors = false; |
| TypeVariableBinding[] typeVariables = this.type.typeVariables(); |
| if (this.arguments != null && typeVariables != null) { // arguments may be null in error cases |
| for (int i = 0, length = typeVariables.length; i < length; i++) { |
| if (typeVariables[i].boundCheck(this, this.arguments[i]) != TypeConstants.OK) { |
| hasErrors = true; |
| if ((this.arguments[i].tagBits & TagBits.HasMissingType) == 0) { |
| // do not report secondary error, if type reference already got complained against |
| scope.problemReporter().typeMismatchError(this.arguments[i], typeVariables[i], this.type, argumentReferences[i]); |
| } |
| } |
| } |
| } |
| if (!hasErrors) this.tagBits |= TagBits.PassedBoundCheck; // no need to recheck it in the future |
| } |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#canBeInstantiated() |
| */ |
| public boolean canBeInstantiated() { |
| return ((this.tagBits & TagBits.HasDirectWildcard) == 0) && super.canBeInstantiated(); // cannot instantiate param type with wildcard arguments |
| } |
| /** |
| * Perform capture conversion for a parameterized type with wildcard arguments |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#capture(Scope,int) |
| */ |
| public TypeBinding capture(Scope scope, int position) { |
| if ((this.tagBits & TagBits.HasDirectWildcard) == 0) |
| return this; |
| |
| TypeBinding[] originalArguments = this.arguments; |
| int length = originalArguments.length; |
| TypeBinding[] capturedArguments = new TypeBinding[length]; |
| |
| // Retrieve the type context for capture bindingKey |
| ReferenceBinding contextType = scope.enclosingSourceType(); |
| if (contextType != null) contextType = contextType.outermostEnclosingType(); // maybe null when used programmatically by DOM |
| |
| for (int i = 0; i < length; i++) { |
| TypeBinding argument = originalArguments[i]; |
| if (argument.kind() == Binding.WILDCARD_TYPE) { // no capture for intersection types |
| capturedArguments[i] = new CaptureBinding((WildcardBinding) argument, contextType, position, scope.compilationUnitScope().nextCaptureID()); |
| } else { |
| capturedArguments[i] = argument; |
| } |
| } |
| ParameterizedTypeBinding capturedParameterizedType = this.environment.createParameterizedType(this.type, capturedArguments, enclosingType()); |
| for (int i = 0; i < length; i++) { |
| TypeBinding argument = capturedArguments[i]; |
| if (argument.isCapture()) { |
| ((CaptureBinding)argument).initializeBounds(scope, capturedParameterizedType); |
| } |
| } |
| return capturedParameterizedType; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#collectMissingTypes(java.util.List) |
| */ |
| public List collectMissingTypes(List missingTypes) { |
| if ((this.tagBits & TagBits.HasMissingType) != 0) { |
| if (this.enclosingType != null) { |
| missingTypes = this.enclosingType.collectMissingTypes(missingTypes); |
| } |
| missingTypes = genericType().collectMissingTypes(missingTypes); |
| if (this.arguments != null) { |
| for (int i = 0, max = this.arguments.length; i < max; i++) { |
| missingTypes = this.arguments[i].collectMissingTypes(missingTypes); |
| } |
| } |
| } |
| return missingTypes; |
| } |
| |
| /** |
| * Collect the substitutes into a map for certain type variables inside the receiver type |
| * e.g. Collection<T>.collectSubstitutes(Collection<List<X>>, Map), will populate Map with: T --> List<X> |
| * Constraints: |
| * A << F corresponds to: F.collectSubstitutes(..., A, ..., CONSTRAINT_EXTENDS (1)) |
| * A = F corresponds to: F.collectSubstitutes(..., A, ..., CONSTRAINT_EQUAL (0)) |
| * A >> F corresponds to: F.collectSubstitutes(..., A, ..., CONSTRAINT_SUPER (2)) |
| */ |
| public void collectSubstitutes(Scope scope, TypeBinding actualType, InferenceContext inferenceContext, int constraint) { |
| if ((this.tagBits & TagBits.HasTypeVariable) == 0) { |
| TypeBinding actualEquivalent = actualType.findSuperTypeOriginatingFrom(this.type); |
| if (actualEquivalent != null && actualEquivalent.isRawType()) { |
| inferenceContext.isUnchecked = true; |
| } |
| return; |
| } |
| if (actualType == TypeBinding.NULL) return; |
| |
| if (!(actualType instanceof ReferenceBinding)) return; |
| TypeBinding formalEquivalent, actualEquivalent; |
| switch (constraint) { |
| case TypeConstants.CONSTRAINT_EQUAL : |
| case TypeConstants.CONSTRAINT_EXTENDS : |
| formalEquivalent = this; |
| actualEquivalent = actualType.findSuperTypeOriginatingFrom(this.type); |
| if (actualEquivalent == null) return; |
| break; |
| case TypeConstants.CONSTRAINT_SUPER : |
| default: |
| formalEquivalent = this.findSuperTypeOriginatingFrom(actualType); |
| if (formalEquivalent == null) return; |
| actualEquivalent = actualType; |
| break; |
| } |
| // collect through enclosing type |
| ReferenceBinding formalEnclosingType = formalEquivalent.enclosingType(); |
| if (formalEnclosingType != null) { |
| formalEnclosingType.collectSubstitutes(scope, actualEquivalent.enclosingType(), inferenceContext, constraint); |
| } |
| // collect through type arguments |
| if (this.arguments == null) return; |
| TypeBinding[] formalArguments; |
| switch (formalEquivalent.kind()) { |
| case Binding.GENERIC_TYPE : |
| formalArguments = formalEquivalent.typeVariables(); |
| break; |
| case Binding.PARAMETERIZED_TYPE : |
| formalArguments = ((ParameterizedTypeBinding)formalEquivalent).arguments; |
| break; |
| case Binding.RAW_TYPE : |
| if (inferenceContext.depth > 0) { |
| inferenceContext.status = InferenceContext.FAILED; // marker for impossible inference |
| } |
| return; |
| default : |
| return; |
| } |
| TypeBinding[] actualArguments; |
| switch (actualEquivalent.kind()) { |
| case Binding.GENERIC_TYPE : |
| actualArguments = actualEquivalent.typeVariables(); |
| break; |
| case Binding.PARAMETERIZED_TYPE : |
| actualArguments = ((ParameterizedTypeBinding)actualEquivalent).arguments; |
| break; |
| case Binding.RAW_TYPE : |
| if (inferenceContext.depth > 0) { |
| inferenceContext.status = InferenceContext.FAILED; // marker for impossible inference |
| } else { |
| inferenceContext.isUnchecked = true; |
| } |
| return; |
| default : |
| return; |
| } |
| inferenceContext.depth++; |
| for (int i = 0, length = formalArguments.length; i < length; i++) { |
| TypeBinding formalArgument = formalArguments[i]; |
| TypeBinding actualArgument = actualArguments[i]; |
| if (formalArgument.isWildcard()) { |
| formalArgument.collectSubstitutes(scope, actualArgument, inferenceContext, constraint); |
| continue; |
| } else if (actualArgument.isWildcard()){ |
| WildcardBinding actualWildcardArgument = (WildcardBinding) actualArgument; |
| if (actualWildcardArgument.otherBounds == null) { |
| if (constraint == TypeConstants.CONSTRAINT_SUPER) { // JLS 15.12.7, p.459 |
| switch(actualWildcardArgument.boundKind) { |
| case Wildcard.EXTENDS : |
| formalArgument.collectSubstitutes(scope, actualWildcardArgument.bound, inferenceContext, TypeConstants.CONSTRAINT_SUPER); |
| continue; |
| case Wildcard.SUPER : |
| formalArgument.collectSubstitutes(scope, actualWildcardArgument.bound, inferenceContext, TypeConstants.CONSTRAINT_EXTENDS); |
| continue; |
| default : |
| continue; // cannot infer anything further from unbound wildcard |
| } |
| } else { |
| continue; // cannot infer anything further from wildcard |
| } |
| } |
| } |
| // by default, use EQUAL constraint |
| formalArgument.collectSubstitutes(scope, actualArgument, inferenceContext, TypeConstants.CONSTRAINT_EQUAL); |
| } |
| inferenceContext.depth--; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#computeId() |
| */ |
| public void computeId() { |
| this.id = TypeIds.NoId; |
| } |
| |
| public char[] computeUniqueKey(boolean isLeaf) { |
| StringBuffer sig = new StringBuffer(10); |
| ReferenceBinding enclosing; |
| if (isMemberType() && ((enclosing = enclosingType()).isParameterizedType() || enclosing.isRawType())) { |
| char[] typeSig = enclosing.computeUniqueKey(false/*not a leaf*/); |
| sig.append(typeSig, 0, typeSig.length-1); // copy all but trailing semicolon |
| sig.append('.').append(sourceName()); |
| } else if(this.type.isLocalType()){ |
| LocalTypeBinding localTypeBinding = (LocalTypeBinding) this.type; |
| enclosing = localTypeBinding.enclosingType(); |
| ReferenceBinding temp; |
| while ((temp = enclosing.enclosingType()) != null) |
| enclosing = temp; |
| char[] typeSig = enclosing.computeUniqueKey(false/*not a leaf*/); |
| sig.append(typeSig, 0, typeSig.length-1); // copy all but trailing semicolon |
| sig.append('$'); |
| sig.append(localTypeBinding.sourceStart); |
| } else { |
| char[] typeSig = this.type.computeUniqueKey(false/*not a leaf*/); |
| sig.append(typeSig, 0, typeSig.length-1); // copy all but trailing semicolon |
| } |
| ReferenceBinding captureSourceType = null; |
| if (this.arguments != null) { |
| sig.append('<'); |
| for (int i = 0, length = this.arguments.length; i < length; i++) { |
| TypeBinding typeBinding = this.arguments[i]; |
| sig.append(typeBinding.computeUniqueKey(false/*not a leaf*/)); |
| if (typeBinding instanceof CaptureBinding) |
| captureSourceType = ((CaptureBinding) typeBinding).sourceType; |
| } |
| sig.append('>'); |
| } |
| sig.append(';'); |
| if (captureSourceType != null && captureSourceType != this.type) { |
| // contains a capture binding |
| sig.insert(0, "&"); //$NON-NLS-1$ |
| sig.insert(0, captureSourceType.computeUniqueKey(false/*not a leaf*/)); |
| } |
| |
| int sigLength = sig.length(); |
| char[] uniqueKey = new char[sigLength]; |
| sig.getChars(0, sigLength, uniqueKey, 0); |
| return uniqueKey; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#constantPoolName() |
| */ |
| public char[] constantPoolName() { |
| return this.type.constantPoolName(); // erasure |
| } |
| |
| public ParameterizedMethodBinding createParameterizedMethod(MethodBinding originalMethod) { |
| return new ParameterizedMethodBinding(this, originalMethod); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#debugName() |
| */ |
| public String debugName() { |
| StringBuffer nameBuffer = new StringBuffer(10); |
| if (this.type instanceof UnresolvedReferenceBinding) { |
| nameBuffer.append(this.type); |
| } else { |
| nameBuffer.append(this.type.sourceName()); |
| } |
| if (this.arguments != null) { |
| nameBuffer.append('<'); |
| for (int i = 0, length = this.arguments.length; i < length; i++) { |
| if (i > 0) nameBuffer.append(','); |
| nameBuffer.append(this.arguments[i].debugName()); |
| } |
| nameBuffer.append('>'); |
| } |
| return nameBuffer.toString(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#enclosingType() |
| */ |
| public ReferenceBinding enclosingType() { |
| return this.enclosingType; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.Substitution#environment() |
| */ |
| public LookupEnvironment environment() { |
| return this.environment; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#erasure() |
| */ |
| public TypeBinding erasure() { |
| return this.type.erasure(); // erasure |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#fieldCount() |
| */ |
| public int fieldCount() { |
| return this.type.fieldCount(); // same as erasure (lazy) |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#fields() |
| */ |
| public FieldBinding[] fields() { |
| if ((this.tagBits & TagBits.AreFieldsComplete) != 0) |
| return this.fields; |
| |
| try { |
| FieldBinding[] originalFields = this.type.fields(); |
| int length = originalFields.length; |
| FieldBinding[] parameterizedFields = new FieldBinding[length]; |
| for (int i = 0; i < length; i++) |
| // substitute all fields, so as to get updated declaring class at least |
| parameterizedFields[i] = new ParameterizedFieldBinding(this, originalFields[i]); |
| this.fields = parameterizedFields; |
| } finally { |
| // if the original fields cannot be retrieved (ex. AbortCompilation), then assume we do not have any fields |
| if (this.fields == null) |
| this.fields = Binding.NO_FIELDS; |
| this.tagBits |= TagBits.AreFieldsComplete; |
| } |
| return this.fields; |
| } |
| |
| /** |
| * Return the original generic type from which the parameterized type got instantiated from. |
| * This will perform lazy resolution automatically if needed. |
| * @see ParameterizedTypeBinding#actualType() if no resolution is required (unlikely) |
| */ |
| public ReferenceBinding genericType() { |
| if (this.type instanceof UnresolvedReferenceBinding) |
| ((UnresolvedReferenceBinding) this.type).resolve(this.environment, false); |
| return this.type; |
| } |
| |
| /** |
| * Ltype<param1 ... paramN>; |
| * LY<TT;>; |
| */ |
| public char[] genericTypeSignature() { |
| if (this.genericTypeSignature == null) { |
| if ((this.modifiers & ExtraCompilerModifiers.AccGenericSignature) == 0) { |
| this.genericTypeSignature = this.type.signature(); |
| } else { |
| StringBuffer sig = new StringBuffer(10); |
| if (isMemberType()) { |
| ReferenceBinding enclosing = enclosingType(); |
| char[] typeSig = enclosing.genericTypeSignature(); |
| sig.append(typeSig, 0, typeSig.length-1);// copy all but trailing semicolon |
| if ((enclosing.modifiers & ExtraCompilerModifiers.AccGenericSignature) != 0) { |
| sig.append('.'); |
| } else { |
| sig.append('$'); |
| } |
| sig.append(sourceName()); |
| } else { |
| char[] typeSig = this.type.signature(); |
| sig.append(typeSig, 0, typeSig.length-1);// copy all but trailing semicolon |
| } |
| if (this.arguments != null) { |
| sig.append('<'); |
| for (int i = 0, length = this.arguments.length; i < length; i++) { |
| sig.append(this.arguments[i].genericTypeSignature()); |
| } |
| sig.append('>'); |
| } |
| sig.append(';'); |
| int sigLength = sig.length(); |
| this.genericTypeSignature = new char[sigLength]; |
| sig.getChars(0, sigLength, this.genericTypeSignature, 0); |
| } |
| } |
| return this.genericTypeSignature; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getAnnotationTagBits() |
| */ |
| public long getAnnotationTagBits() { |
| return this.type.getAnnotationTagBits(); |
| } |
| |
| public int getEnclosingInstancesSlotSize() { |
| return genericType().getEnclosingInstancesSlotSize(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getExactConstructor(TypeBinding[]) |
| */ |
| public MethodBinding getExactConstructor(TypeBinding[] argumentTypes) { |
| int argCount = argumentTypes.length; |
| MethodBinding match = null; |
| |
| if ((this.tagBits & TagBits.AreMethodsComplete) != 0) { // have resolved all arg types & return type of the methods |
| long range; |
| if ((range = ReferenceBinding.binarySearch(TypeConstants.INIT, this.methods)) >= 0) { |
| nextMethod: for (int imethod = (int)range, end = (int)(range >> 32); imethod <= end; imethod++) { |
| MethodBinding method = this.methods[imethod]; |
| if (method.parameters.length == argCount) { |
| TypeBinding[] toMatch = method.parameters; |
| for (int iarg = 0; iarg < argCount; iarg++) |
| if (toMatch[iarg] != argumentTypes[iarg]) |
| continue nextMethod; |
| if (match != null) return null; // collision case |
| match = method; |
| } |
| } |
| } |
| } else { |
| MethodBinding[] matchingMethods = getMethods(TypeConstants.INIT); // takes care of duplicates & default abstract methods |
| nextMethod : for (int m = matchingMethods.length; --m >= 0;) { |
| MethodBinding method = matchingMethods[m]; |
| TypeBinding[] toMatch = method.parameters; |
| if (toMatch.length == argCount) { |
| for (int p = 0; p < argCount; p++) |
| if (toMatch[p] != argumentTypes[p]) |
| continue nextMethod; |
| if (match != null) return null; // collision case |
| match = method; |
| } |
| } |
| } |
| return match; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getExactMethod(char[], TypeBinding[],CompilationUnitScope) |
| */ |
| public MethodBinding getExactMethod(char[] selector, TypeBinding[] argumentTypes, CompilationUnitScope refScope) { |
| // sender from refScope calls recordTypeReference(this) |
| int argCount = argumentTypes.length; |
| boolean foundNothing = true; |
| MethodBinding match = null; |
| |
| if ((this.tagBits & TagBits.AreMethodsComplete) != 0) { // have resolved all arg types & return type of the methods |
| long range; |
| if ((range = ReferenceBinding.binarySearch(selector, this.methods)) >= 0) { |
| nextMethod: for (int imethod = (int)range, end = (int)(range >> 32); imethod <= end; imethod++) { |
| MethodBinding method = this.methods[imethod]; |
| foundNothing = false; // inner type lookups must know that a method with this name exists |
| if (method.parameters.length == argCount) { |
| TypeBinding[] toMatch = method.parameters; |
| for (int iarg = 0; iarg < argCount; iarg++) |
| if (toMatch[iarg] != argumentTypes[iarg]) |
| continue nextMethod; |
| if (match != null) return null; // collision case |
| match = method; |
| } |
| } |
| } |
| } else { |
| MethodBinding[] matchingMethods = getMethods(selector); // takes care of duplicates & default abstract methods |
| foundNothing = matchingMethods == Binding.NO_METHODS; |
| nextMethod : for (int m = matchingMethods.length; --m >= 0;) { |
| MethodBinding method = matchingMethods[m]; |
| TypeBinding[] toMatch = method.parameters; |
| if (toMatch.length == argCount) { |
| for (int p = 0; p < argCount; p++) |
| if (toMatch[p] != argumentTypes[p]) |
| continue nextMethod; |
| if (match != null) return null; // collision case |
| match = method; |
| } |
| } |
| } |
| if (match != null) { |
| // cannot be picked up as an exact match if its a possible anonymous case, such as: |
| // class A<T extends Number> { public void id(T t) {} } |
| // class B<TT> extends A<Integer> { public <ZZ> void id(Integer i) {} } |
| if (match.hasSubstitutedParameters()) return null; |
| return match; |
| } |
| |
| if (foundNothing && (this.arguments == null || this.arguments.length <= 1)) { |
| if (isInterface()) { |
| if (superInterfaces().length == 1) { |
| if (refScope != null) |
| refScope.recordTypeReference(this.superInterfaces[0]); |
| return this.superInterfaces[0].getExactMethod(selector, argumentTypes, refScope); |
| } |
| } else if (superclass() != null) { |
| if (refScope != null) |
| refScope.recordTypeReference(this.superclass); |
| return this.superclass.getExactMethod(selector, argumentTypes, refScope); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getField(char[], boolean) |
| */ |
| public FieldBinding getField(char[] fieldName, boolean needResolve) { |
| fields(); // ensure fields have been initialized... must create all at once unlike methods |
| return ReferenceBinding.binarySearch(fieldName, this.fields); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getMemberType(char[]) |
| */ |
| public ReferenceBinding getMemberType(char[] typeName) { |
| memberTypes(); // ensure memberTypes have been initialized... must create all at once unlike methods |
| int typeLength = typeName.length; |
| for (int i = this.memberTypes.length; --i >= 0;) { |
| ReferenceBinding memberType = this.memberTypes[i]; |
| if (memberType.sourceName.length == typeLength && CharOperation.equals(memberType.sourceName, typeName)) |
| return memberType; |
| } |
| return null; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#getMethods(char[]) |
| */ |
| public MethodBinding[] getMethods(char[] selector) { |
| if (this.methods != null) { |
| long range; |
| if ((range = ReferenceBinding.binarySearch(selector, this.methods)) >= 0) { |
| int start = (int) range; |
| int length = (int) (range >> 32) - start + 1; |
| // cannot optimize since some clients rely on clone array |
| // if (start == 0 && length == this.methods.length) |
| // return this.methods; // current set is already interesting subset |
| MethodBinding[] result; |
| System.arraycopy(this.methods, start, result = new MethodBinding[length], 0, length); |
| return result; |
| } |
| } |
| if ((this.tagBits & TagBits.AreMethodsComplete) != 0) |
| return Binding.NO_METHODS; // have created all the methods and there are no matches |
| |
| MethodBinding[] parameterizedMethods = null; |
| try { |
| MethodBinding[] originalMethods = this.type.getMethods(selector); |
| int length = originalMethods.length; |
| if (length == 0) return Binding.NO_METHODS; |
| |
| parameterizedMethods = new MethodBinding[length]; |
| for (int i = 0; i < length; i++) |
| // substitute methods, so as to get updated declaring class at least |
| parameterizedMethods[i] = createParameterizedMethod(originalMethods[i]); |
| if (this.methods == null) { |
| MethodBinding[] temp = new MethodBinding[length]; |
| System.arraycopy(parameterizedMethods, 0, temp, 0, length); |
| this.methods = temp; // must be a copy of parameterizedMethods since it will be returned below |
| } else { |
| int total = length + this.methods.length; |
| MethodBinding[] temp = new MethodBinding[total]; |
| System.arraycopy(parameterizedMethods, 0, temp, 0, length); |
| System.arraycopy(this.methods, 0, temp, length, this.methods.length); |
| if (total > 1) |
| ReferenceBinding.sortMethods(temp, 0, total); // resort to ensure order is good |
| this.methods = temp; |
| } |
| return parameterizedMethods; |
| } finally { |
| // if the original methods cannot be retrieved (ex. AbortCompilation), then assume we do not have any methods |
| if (parameterizedMethods == null) |
| this.methods = parameterizedMethods = Binding.NO_METHODS; |
| } |
| } |
| |
| public int getOuterLocalVariablesSlotSize() { |
| return genericType().getOuterLocalVariablesSlotSize(); |
| } |
| |
| public boolean hasMemberTypes() { |
| return this.type.hasMemberTypes(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#implementsMethod(MethodBinding) |
| */ |
| public boolean implementsMethod(MethodBinding method) { |
| return this.type.implementsMethod(method); // erasure |
| } |
| |
| void initialize(ReferenceBinding someType, TypeBinding[] someArguments) { |
| this.type = someType; |
| this.sourceName = someType.sourceName; |
| this.compoundName = someType.compoundName; |
| this.fPackage = someType.fPackage; |
| this.fileName = someType.fileName; |
| // should not be set yet |
| // this.superclass = null; |
| // this.superInterfaces = null; |
| // this.fields = null; |
| // this.methods = null; |
| this.modifiers = someType.modifiers & ~ExtraCompilerModifiers.AccGenericSignature; // discard generic signature, will compute later |
| // only set AccGenericSignature if parameterized or have enclosing type required signature |
| if (someArguments != null) { |
| this.modifiers |= ExtraCompilerModifiers.AccGenericSignature; |
| } else if (this.enclosingType != null) { |
| this.modifiers |= (this.enclosingType.modifiers & ExtraCompilerModifiers.AccGenericSignature); |
| this.tagBits |= this.enclosingType.tagBits & (TagBits.HasTypeVariable | TagBits.HasMissingType); |
| } |
| if (someArguments != null) { |
| this.arguments = someArguments; |
| for (int i = 0, length = someArguments.length; i < length; i++) { |
| TypeBinding someArgument = someArguments[i]; |
| switch (someArgument.kind()) { |
| case Binding.WILDCARD_TYPE : |
| this.tagBits |= TagBits.HasDirectWildcard; |
| if (((WildcardBinding) someArgument).boundKind != Wildcard.UNBOUND) { |
| this.tagBits |= TagBits.IsBoundParameterizedType; |
| } |
| break; |
| case Binding.INTERSECTION_TYPE : |
| this.tagBits |= TagBits.HasDirectWildcard; |
| break; |
| default : |
| this.tagBits |= TagBits.IsBoundParameterizedType; |
| break; |
| } |
| this.tagBits |= someArgument.tagBits & (TagBits.HasTypeVariable | TagBits.HasMissingType | TagBits.ContainsNestedTypeReferences); |
| } |
| } |
| this.tagBits |= someType.tagBits & (TagBits.IsLocalType| TagBits.IsMemberType | TagBits.IsNestedType | TagBits.HasMissingType | TagBits.ContainsNestedTypeReferences); |
| this.tagBits &= ~(TagBits.AreFieldsComplete|TagBits.AreMethodsComplete); |
| } |
| |
| protected void initializeArguments() { |
| // do nothing for true parameterized types (only for raw types) |
| } |
| |
| void initializeForStaticImports() { |
| this.type.initializeForStaticImports(); |
| } |
| |
| public boolean isEquivalentTo(TypeBinding otherType) { |
| if (this == otherType) |
| return true; |
| if (otherType == null) |
| return false; |
| switch(otherType.kind()) { |
| |
| case Binding.WILDCARD_TYPE : |
| case Binding.INTERSECTION_TYPE: |
| return ((WildcardBinding) otherType).boundCheck(this); |
| |
| case Binding.PARAMETERIZED_TYPE : |
| ParameterizedTypeBinding otherParamType = (ParameterizedTypeBinding) otherType; |
| if (this.type != otherParamType.type) |
| return false; |
| if (!isStatic()) { // static member types do not compare their enclosing |
| ReferenceBinding enclosing = enclosingType(); |
| if (enclosing != null) { |
| ReferenceBinding otherEnclosing = otherParamType.enclosingType(); |
| if (otherEnclosing == null) return false; |
| if ((otherEnclosing.tagBits & TagBits.HasDirectWildcard) == 0) { |
| if (enclosing != otherEnclosing) return false; |
| } else { |
| if (!enclosing.isEquivalentTo(otherParamType.enclosingType())) return false; |
| } |
| } |
| } |
| if (this.arguments == null) { |
| return otherParamType.arguments == null; |
| } |
| int length = this.arguments.length; |
| TypeBinding[] otherArguments = otherParamType.arguments; |
| if (otherArguments == null || otherArguments.length != length) return false; |
| for (int i = 0; i < length; i++) { |
| if (!this.arguments[i].isTypeArgumentContainedBy(otherArguments[i])) |
| return false; |
| } |
| return true; |
| |
| case Binding.RAW_TYPE : |
| return erasure() == otherType.erasure(); |
| } |
| return false; |
| } |
| |
| public boolean isHierarchyConnected() { |
| return this.superclass != null && this.superInterfaces != null; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.Substitution#isRawSubstitution() |
| */ |
| public boolean isRawSubstitution() { |
| return isRawType(); |
| } |
| |
| public int kind() { |
| return PARAMETERIZED_TYPE; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#memberTypes() |
| */ |
| public ReferenceBinding[] memberTypes() { |
| if (this.memberTypes == null) { |
| try { |
| ReferenceBinding[] originalMemberTypes = this.type.memberTypes(); |
| int length = originalMemberTypes.length; |
| ReferenceBinding[] parameterizedMemberTypes = new ReferenceBinding[length]; |
| // boolean isRaw = this.isRawType(); |
| for (int i = 0; i < length; i++) |
| // substitute all member types, so as to get updated enclosing types |
| parameterizedMemberTypes[i] = /*isRaw && originalMemberTypes[i].isGenericType() |
| ? this.environment.createRawType(originalMemberTypes[i], this) |
| : */ this.environment.createParameterizedType(originalMemberTypes[i], null, this); |
| this.memberTypes = parameterizedMemberTypes; |
| } finally { |
| // if the original fields cannot be retrieved (ex. AbortCompilation), then assume we do not have any fields |
| if (this.memberTypes == null) |
| this.memberTypes = Binding.NO_MEMBER_TYPES; |
| } |
| } |
| return this.memberTypes; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#methods() |
| */ |
| public MethodBinding[] methods() { |
| if ((this.tagBits & TagBits.AreMethodsComplete) != 0) |
| return this.methods; |
| |
| try { |
| MethodBinding[] originalMethods = this.type.methods(); |
| int length = originalMethods.length; |
| MethodBinding[] parameterizedMethods = new MethodBinding[length]; |
| for (int i = 0; i < length; i++) |
| // substitute all methods, so as to get updated declaring class at least |
| parameterizedMethods[i] = createParameterizedMethod(originalMethods[i]); |
| this.methods = parameterizedMethods; |
| } finally { |
| // if the original methods cannot be retrieved (ex. AbortCompilation), then assume we do not have any methods |
| if (this.methods == null) |
| this.methods = Binding.NO_METHODS; |
| |
| this.tagBits |= TagBits.AreMethodsComplete; |
| } |
| return this.methods; |
| } |
| /** |
| * Define to be able to get the computeId() for the inner type binding. |
| * |
| * @see org.eclipse.jdt.internal.compiler.lookup.Binding#problemId() |
| */ |
| public int problemId() { |
| return this.type.problemId(); |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#qualifiedPackageName() |
| */ |
| public char[] qualifiedPackageName() { |
| return this.type.qualifiedPackageName(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#qualifiedSourceName() |
| */ |
| public char[] qualifiedSourceName() { |
| return this.type.qualifiedSourceName(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.Binding#readableName() |
| */ |
| public char[] readableName() { |
| StringBuffer nameBuffer = new StringBuffer(10); |
| if (isMemberType()) { |
| nameBuffer.append(CharOperation.concat(enclosingType().readableName(), this.sourceName, '.')); |
| } else { |
| nameBuffer.append(CharOperation.concatWith(this.type.compoundName, '.')); |
| } |
| if (this.arguments != null) { |
| nameBuffer.append('<'); |
| for (int i = 0, length = this.arguments.length; i < length; i++) { |
| if (i > 0) nameBuffer.append(','); |
| nameBuffer.append(this.arguments[i].readableName()); |
| } |
| nameBuffer.append('>'); |
| } |
| int nameLength = nameBuffer.length(); |
| char[] readableName = new char[nameLength]; |
| nameBuffer.getChars(0, nameLength, readableName, 0); |
| return readableName; |
| } |
| |
| ReferenceBinding resolve() { |
| if ((this.tagBits & TagBits.HasUnresolvedTypeVariables) == 0) |
| return this; |
| |
| this.tagBits &= ~TagBits.HasUnresolvedTypeVariables; // can be recursive so only want to call once |
| ReferenceBinding resolvedType = (ReferenceBinding) BinaryTypeBinding.resolveType(this.type, this.environment, false /* no raw conversion */); // still part of parameterized type ref |
| this.tagBits |= resolvedType.tagBits & TagBits.ContainsNestedTypeReferences; |
| if (this.arguments != null) { |
| int argLength = this.arguments.length; |
| for (int i = 0; i < argLength; i++) { |
| TypeBinding resolveType = BinaryTypeBinding.resolveType(this.arguments[i], this.environment, true /* raw conversion */); |
| this.arguments[i] = resolveType; |
| this.tagBits |= resolvedType.tagBits & TagBits.ContainsNestedTypeReferences; |
| } |
| // arity check |
| TypeVariableBinding[] refTypeVariables = resolvedType.typeVariables(); |
| if (refTypeVariables == Binding.NO_TYPE_VARIABLES) { // check generic |
| if ((resolvedType.tagBits & TagBits.HasMissingType) == 0) { |
| this.environment.problemReporter.nonGenericTypeCannotBeParameterized(0, null, resolvedType, this.arguments); |
| } |
| return this; |
| } else if (argLength != refTypeVariables.length) { // check arity |
| this.environment.problemReporter.incorrectArityForParameterizedType(null, resolvedType, this.arguments); |
| return this; // cannot reach here as AbortCompilation is thrown |
| } |
| // check argument type compatibility... REMOVED for now since incremental build will propagate change & detect in source |
| // for (int i = 0; i < argLength; i++) { |
| // TypeBinding resolvedArgument = this.arguments[i]; |
| // if (refTypeVariables[i].boundCheck(this, resolvedArgument) != TypeConstants.OK) { |
| // this.environment.problemReporter.typeMismatchError(resolvedArgument, refTypeVariables[i], resolvedType, null); |
| // } |
| // } |
| } |
| return this; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.Binding#shortReadableName() |
| */ |
| public char[] shortReadableName() { |
| StringBuffer nameBuffer = new StringBuffer(10); |
| if (isMemberType()) { |
| nameBuffer.append(CharOperation.concat(enclosingType().shortReadableName(), this.sourceName, '.')); |
| } else { |
| nameBuffer.append(this.type.sourceName); |
| } |
| if (this.arguments != null) { |
| nameBuffer.append('<'); |
| for (int i = 0, length = this.arguments.length; i < length; i++) { |
| if (i > 0) nameBuffer.append(','); |
| nameBuffer.append(this.arguments[i].shortReadableName()); |
| } |
| nameBuffer.append('>'); |
| } |
| int nameLength = nameBuffer.length(); |
| char[] shortReadableName = new char[nameLength]; |
| nameBuffer.getChars(0, nameLength, shortReadableName, 0); |
| return shortReadableName; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#signature() |
| */ |
| public char[] signature() { |
| if (this.signature == null) { |
| this.signature = this.type.signature(); // erasure |
| } |
| return this.signature; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#sourceName() |
| */ |
| public char[] sourceName() { |
| return this.type.sourceName(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.Substitution#substitute(org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding) |
| */ |
| public TypeBinding substitute(TypeVariableBinding originalVariable) { |
| |
| ParameterizedTypeBinding currentType = this; |
| while (true) { |
| TypeVariableBinding[] typeVariables = currentType.type.typeVariables(); |
| int length = typeVariables.length; |
| // check this variable can be substituted given parameterized type |
| if (originalVariable.rank < length && typeVariables[originalVariable.rank] == originalVariable) { |
| // lazy init, since cannot do so during binding creation if during supertype connection |
| if (currentType.arguments == null) |
| currentType.initializeArguments(); // only for raw types |
| if (currentType.arguments != null) |
| return currentType.arguments[originalVariable.rank]; |
| } |
| // recurse on enclosing type, as it may hold more substitutions to perform |
| if (currentType.isStatic()) break; |
| ReferenceBinding enclosing = currentType.enclosingType(); |
| if (!(enclosing instanceof ParameterizedTypeBinding)) |
| break; |
| currentType = (ParameterizedTypeBinding) enclosing; |
| } |
| return originalVariable; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#superclass() |
| */ |
| public ReferenceBinding superclass() { |
| if (this.superclass == null) { |
| // note: Object cannot be generic |
| ReferenceBinding genericSuperclass = this.type.superclass(); |
| if (genericSuperclass == null) return null; // e.g. interfaces |
| this.superclass = (ReferenceBinding) Scope.substitute(this, genericSuperclass); |
| } |
| return this.superclass; |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#superInterfaces() |
| */ |
| public ReferenceBinding[] superInterfaces() { |
| if (this.superInterfaces == null) { |
| if (this.type.isHierarchyBeingConnected()) |
| return Binding.NO_SUPERINTERFACES; // prevent superinterfaces from being assigned before they are connected |
| this.superInterfaces = Scope.substitute(this, this.type.superInterfaces()); |
| } |
| return this.superInterfaces; |
| } |
| |
| public void swapUnresolved(UnresolvedReferenceBinding unresolvedType, ReferenceBinding resolvedType, LookupEnvironment env) { |
| boolean update = false; |
| if (this.type == unresolvedType) { |
| this.type = resolvedType; // cannot be raw since being parameterized below |
| update = true; |
| ReferenceBinding enclosing = resolvedType.enclosingType(); |
| if (enclosing != null) { |
| this.enclosingType = (ReferenceBinding) env.convertUnresolvedBinaryToRawType(enclosing); // needed when binding unresolved member type |
| } |
| } |
| if (this.arguments != null) { |
| for (int i = 0, l = this.arguments.length; i < l; i++) { |
| if (this.arguments[i] == unresolvedType) { |
| this.arguments[i] = env.convertUnresolvedBinaryToRawType(resolvedType); |
| update = true; |
| } |
| } |
| } |
| if (update) |
| initialize(this.type, this.arguments); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#syntheticEnclosingInstanceTypes() |
| */ |
| public ReferenceBinding[] syntheticEnclosingInstanceTypes() { |
| return genericType().syntheticEnclosingInstanceTypes(); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#syntheticOuterLocalVariables() |
| */ |
| public SyntheticArgumentBinding[] syntheticOuterLocalVariables() { |
| return genericType().syntheticOuterLocalVariables(); |
| } |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| StringBuffer buffer = new StringBuffer(30); |
| if (this.type instanceof UnresolvedReferenceBinding) { |
| buffer.append(debugName()); |
| } else { |
| if (isDeprecated()) buffer.append("deprecated "); //$NON-NLS-1$ |
| if (isPublic()) buffer.append("public "); //$NON-NLS-1$ |
| if (isProtected()) buffer.append("protected "); //$NON-NLS-1$ |
| if (isPrivate()) buffer.append("private "); //$NON-NLS-1$ |
| if (isAbstract() && isClass()) buffer.append("abstract "); //$NON-NLS-1$ |
| if (isStatic() && isNestedType()) buffer.append("static "); //$NON-NLS-1$ |
| if (isFinal()) buffer.append("final "); //$NON-NLS-1$ |
| |
| if (isEnum()) buffer.append("enum "); //$NON-NLS-1$ |
| else if (isAnnotationType()) buffer.append("@interface "); //$NON-NLS-1$ |
| else if (isClass()) buffer.append("class "); //$NON-NLS-1$ |
| else buffer.append("interface "); //$NON-NLS-1$ |
| buffer.append(debugName()); |
| |
| buffer.append("\n\textends "); //$NON-NLS-1$ |
| buffer.append((this.superclass != null) ? this.superclass.debugName() : "NULL TYPE"); //$NON-NLS-1$ |
| |
| if (this.superInterfaces != null) { |
| if (this.superInterfaces != Binding.NO_SUPERINTERFACES) { |
| buffer.append("\n\timplements : "); //$NON-NLS-1$ |
| for (int i = 0, length = this.superInterfaces.length; i < length; i++) { |
| if (i > 0) |
| buffer.append(", "); //$NON-NLS-1$ |
| buffer.append((this.superInterfaces[i] != null) ? this.superInterfaces[i].debugName() : "NULL TYPE"); //$NON-NLS-1$ |
| } |
| } |
| } else { |
| buffer.append("NULL SUPERINTERFACES"); //$NON-NLS-1$ |
| } |
| |
| if (enclosingType() != null) { |
| buffer.append("\n\tenclosing type : "); //$NON-NLS-1$ |
| buffer.append(enclosingType().debugName()); |
| } |
| |
| if (this.fields != null) { |
| if (this.fields != Binding.NO_FIELDS) { |
| buffer.append("\n/* fields */"); //$NON-NLS-1$ |
| for (int i = 0, length = this.fields.length; i < length; i++) |
| buffer.append('\n').append((this.fields[i] != null) ? this.fields[i].toString() : "NULL FIELD"); //$NON-NLS-1$ |
| } |
| } else { |
| buffer.append("NULL FIELDS"); //$NON-NLS-1$ |
| } |
| |
| if (this.methods != null) { |
| if (this.methods != Binding.NO_METHODS) { |
| buffer.append("\n/* methods */"); //$NON-NLS-1$ |
| for (int i = 0, length = this.methods.length; i < length; i++) |
| buffer.append('\n').append((this.methods[i] != null) ? this.methods[i].toString() : "NULL METHOD"); //$NON-NLS-1$ |
| } |
| } else { |
| buffer.append("NULL METHODS"); //$NON-NLS-1$ |
| } |
| |
| // if (memberTypes != null) { |
| // if (memberTypes != NoMemberTypes) { |
| // buffer.append("\n/* members */"); |
| // for (int i = 0, length = memberTypes.length; i < length; i++) |
| // buffer.append('\n').append((memberTypes[i] != null) ? memberTypes[i].toString() : "NULL TYPE"); |
| // } |
| // } else { |
| // buffer.append("NULL MEMBER TYPES"); |
| // } |
| |
| buffer.append("\n\n"); //$NON-NLS-1$ |
| } |
| return buffer.toString(); |
| |
| } |
| |
| public TypeVariableBinding[] typeVariables() { |
| if (this.arguments == null) { |
| // retain original type variables if not substituted (member type of parameterized type) |
| return this.type.typeVariables(); |
| } |
| return Binding.NO_TYPE_VARIABLES; |
| } |
| } |
