+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v0.5
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v05.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- ******************************************************************************/
-package net.sourceforge.phpdt.internal.compiler.lookup;
-
-import net.sourceforge.phpdt.internal.compiler.ast.CompilationUnitDeclaration;
-import net.sourceforge.phpdt.internal.compiler.impl.CompilerOptions;
-import net.sourceforge.phpdt.internal.compiler.problem.ProblemReporter;
-import net.sourceforge.phpdt.internal.compiler.util.CharOperation;
-import net.sourceforge.phpdt.internal.compiler.util.ObjectVector;
-
-public abstract class Scope
- implements
- BaseTypes,
- BindingIds,
- CompilerModifiers,
- ProblemReasons,
- TagBits,
- TypeConstants,
- TypeIds {
-
- public Scope parent;
- public int kind;
-
- public final static int BLOCK_SCOPE = 1;
- public final static int METHOD_SCOPE = 2;
- public final static int CLASS_SCOPE = 3;
- public final static int COMPILATION_UNIT_SCOPE = 4;
- protected Scope(int kind, Scope parent) {
- this.kind = kind;
- this.parent = parent;
- }
-
- public abstract ProblemReporter problemReporter();
-
- // Internal use only
- protected final boolean areParametersAssignable(TypeBinding[] parameters, TypeBinding[] arguments) {
- if (parameters == arguments)
- return true;
-
- int length = parameters.length;
- if (length != arguments.length)
- return false;
-
- for (int i = 0; i < length; i++)
- if (parameters[i] != arguments[i])
- if (!arguments[i].isCompatibleWith(parameters[i]))
- return false;
- return true;
- }
-
- /* Answer true if the left type can be assigned to right
- */
- public static boolean areTypesCompatible(TypeBinding left, TypeBinding right) {
- return left.isCompatibleWith(right);
- }
-
- /* Answer an int describing the relationship between the given types.
- *
- * NotRelated
- * EqualOrMoreSpecific : left is compatible with right
- * MoreGeneric : right is compatible with left
- */
- public static int compareTypes(TypeBinding left, TypeBinding right) {
- if (areTypesCompatible(left, right))
- return EqualOrMoreSpecific;
- if (areTypesCompatible(right, left))
- return MoreGeneric;
- return NotRelated;
- }
-
- /* Answer an int describing the relationship between the given type and unchecked exceptions.
- *
- * NotRelated
- * EqualOrMoreSpecific : type is known for sure to be an unchecked exception type
- * MoreGeneric : type is a supertype of an actual unchecked exception type
- */
- public int compareUncheckedException(ReferenceBinding type) {
- int comparison = compareTypes(type, getJavaLangRuntimeException());
- if (comparison != 0) return comparison;
- return compareTypes(type, getJavaLangError());
- }
-
- public final CompilationUnitScope compilationUnitScope() {
- Scope lastScope = null;
- Scope scope = this;
- do {
- lastScope = scope;
- scope = scope.parent;
- } while (scope != null);
- return (CompilationUnitScope) lastScope;
- }
-
- public ArrayBinding createArray(TypeBinding type, int dimension) {
- if (type.isValidBinding())
- return environment().createArrayType(type, dimension);
- else
- return new ArrayBinding(type, dimension);
- }
-
- /* Answer the receiver's enclosing source type.
- */
- public final SourceTypeBinding enclosingSourceType() {
- Scope scope = this;
- do {
- if (scope instanceof ClassScope)
- return ((ClassScope) scope).referenceContext.binding;
- scope = scope.parent;
- } while (scope != null);
- return null;
- }
- public final LookupEnvironment environment() {
- Scope scope, unitScope = this;
- while ((scope = unitScope.parent) != null)
- unitScope = scope;
- return ((CompilationUnitScope) unitScope).environment;
- }
-
- // Internal use only
- public ReferenceBinding findDirectMemberType(char[] typeName, ReferenceBinding enclosingType) {
- if ((enclosingType.tagBits & HasNoMemberTypes) != 0)
- return null; // know it has no member types (nor inherited member types)
-
- SourceTypeBinding enclosingSourceType = enclosingSourceType();
- compilationUnitScope().recordReference(enclosingType.compoundName, typeName);
- ReferenceBinding memberType = enclosingType.getMemberType(typeName);
- if (memberType != null) {
- compilationUnitScope().recordTypeReference(memberType); // to record supertypes
- if (enclosingSourceType == null
- ? memberType.canBeSeenBy(getCurrentPackage())
- : memberType.canBeSeenBy(enclosingType, enclosingSourceType))
- return memberType;
- else
- return new ProblemReferenceBinding(typeName, memberType, NotVisible);
- }
- return null;
- }
-
- // Internal use only
- public MethodBinding findExactMethod(
- ReferenceBinding receiverType,
- char[] selector,
- TypeBinding[] argumentTypes,
- InvocationSite invocationSite) {
-
- compilationUnitScope().recordTypeReference(receiverType);
- compilationUnitScope().recordTypeReferences(argumentTypes);
- MethodBinding exactMethod = receiverType.getExactMethod(selector, argumentTypes);
- if (exactMethod != null) {
- compilationUnitScope().recordTypeReferences(exactMethod.thrownExceptions);
- if (receiverType.isInterface() || exactMethod.canBeSeenBy(receiverType, invocationSite, this))
- return exactMethod;
- }
- return null;
- }
-
- // Internal use only
- /* Answer the field binding that corresponds to fieldName.
- Start the lookup at the receiverType.
- InvocationSite implements
- isSuperAccess(); this is used to determine if the discovered field is visible.
- Only fields defined by the receiverType or its supertypes are answered;
- a field of an enclosing type will not be found using this API.
-
- If no visible field is discovered, null is answered.
- */
- public FieldBinding findField(TypeBinding receiverType, char[] fieldName, InvocationSite invocationSite) {
- if (receiverType.isBaseType()) return null;
- if (receiverType.isArrayType()) {
- if (CharOperation.equals(fieldName, LENGTH))
- return ArrayBinding.LengthField;
- return null;
- }
-
- compilationUnitScope().recordTypeReference(receiverType);
-
- ReferenceBinding currentType = (ReferenceBinding) receiverType;
- if (!currentType.canBeSeenBy(this))
- return new ProblemFieldBinding(currentType, fieldName, NotVisible);
- // *** Need a new problem id - TypeNotVisible?
-
- FieldBinding field = currentType.getField(fieldName);
- if (field != null) {
- if (field.canBeSeenBy(currentType, invocationSite, this))
- return field;
- else
- return new ProblemFieldBinding(field.declaringClass, fieldName, NotVisible);
- }
- // collect all superinterfaces of receiverType until the field is found in a supertype
- ReferenceBinding[][] interfacesToVisit = null;
- int lastPosition = -1;
- FieldBinding visibleField = null;
- boolean keepLooking = true;
- boolean notVisible = false;
- // we could hold onto the not visible field for extra error reporting
- while (keepLooking) {
- ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- if (interfacesToVisit == null)
- interfacesToVisit = new ReferenceBinding[5][];
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit,
- 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][],
- 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
- }
- if ((currentType = currentType.superclass()) == null)
- break;
-
- if ((field = currentType.getField(fieldName)) != null) {
- keepLooking = false;
- if (field.canBeSeenBy(receiverType, invocationSite, this)) {
- if (visibleField == null)
- visibleField = field;
- else
- return new ProblemFieldBinding(visibleField.declaringClass, fieldName, Ambiguous);
- } else {
- notVisible = true;
- }
- }
- }
-
- // walk all visible interfaces to find ambiguous references
- if (interfacesToVisit != null) {
- ProblemFieldBinding ambiguous = null;
- done : for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++) {
- ReferenceBinding anInterface = interfaces[j];
- if ((anInterface.tagBits & InterfaceVisited) == 0) {
- // if interface as not already been visited
- anInterface.tagBits |= InterfaceVisited;
- if ((field = anInterface.getField(fieldName)) != null) {
- if (visibleField == null) {
- visibleField = field;
- } else {
- ambiguous = new ProblemFieldBinding(visibleField.declaringClass, fieldName, Ambiguous);
- break done;
- }
- } else {
- ReferenceBinding[] itsInterfaces = anInterface.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit,
- 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][],
- 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
- }
- }
- }
- }
- }
-
- // bit reinitialization
- for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++)
- interfaces[j].tagBits &= ~InterfaceVisited;
- }
- if (ambiguous != null)
- return ambiguous;
- }
-
- if (visibleField != null)
- return visibleField;
- if (notVisible)
- return new ProblemFieldBinding(currentType, fieldName, NotVisible);
- return null;
- }
-
- // Internal use only
- public ReferenceBinding findMemberType(char[] typeName, ReferenceBinding enclosingType) {
- if ((enclosingType.tagBits & HasNoMemberTypes) != 0)
- return null; // know it has no member types (nor inherited member types)
-
- SourceTypeBinding enclosingSourceType = enclosingSourceType();
- PackageBinding currentPackage = getCurrentPackage();
- compilationUnitScope().recordReference(enclosingType.compoundName, typeName);
- ReferenceBinding memberType = enclosingType.getMemberType(typeName);
- if (memberType != null) {
- compilationUnitScope().recordTypeReference(memberType); // to record supertypes
- if (enclosingSourceType == null
- ? memberType.canBeSeenBy(currentPackage)
- : memberType.canBeSeenBy(enclosingType, enclosingSourceType))
- return memberType;
- else
- return new ProblemReferenceBinding(typeName, memberType, NotVisible);
- }
-
- // collect all superinterfaces of receiverType until the memberType is found in a supertype
- ReferenceBinding currentType = enclosingType;
- ReferenceBinding[][] interfacesToVisit = null;
- int lastPosition = -1;
- ReferenceBinding visibleMemberType = null;
- boolean keepLooking = true;
- ReferenceBinding notVisible = null;
- // we could hold onto the not visible field for extra error reporting
- while (keepLooking) {
- ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- if (interfacesToVisit == null)
- interfacesToVisit = new ReferenceBinding[5][];
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit,
- 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][],
- 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
- }
- if ((currentType = currentType.superclass()) == null)
- break;
-
- compilationUnitScope().recordReference(currentType.compoundName, typeName);
- if ((memberType = currentType.getMemberType(typeName)) != null) {
- compilationUnitScope().recordTypeReference(memberType); // to record supertypes
- keepLooking = false;
- if (enclosingSourceType == null
- ? memberType.canBeSeenBy(currentPackage)
- : memberType.canBeSeenBy(enclosingType, enclosingSourceType)) {
- if (visibleMemberType == null)
- visibleMemberType = memberType;
- else
- return new ProblemReferenceBinding(typeName, Ambiguous);
- } else {
- notVisible = memberType;
- }
- }
- }
- // walk all visible interfaces to find ambiguous references
- if (interfacesToVisit != null) {
- ProblemReferenceBinding ambiguous = null;
- done : for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++) {
- ReferenceBinding anInterface = interfaces[j];
- if ((anInterface.tagBits & InterfaceVisited) == 0) {
- // if interface as not already been visited
- anInterface.tagBits |= InterfaceVisited;
- compilationUnitScope().recordReference(anInterface.compoundName, typeName);
- if ((memberType = anInterface.getMemberType(typeName)) != null) {
- compilationUnitScope().recordTypeReference(memberType); // to record supertypes
- if (visibleMemberType == null) {
- visibleMemberType = memberType;
- } else {
- ambiguous = new ProblemReferenceBinding(typeName, Ambiguous);
- break done;
- }
- } else {
- ReferenceBinding[] itsInterfaces = anInterface.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit,
- 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][],
- 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
- }
- }
- }
- }
- }
-
- // bit reinitialization
- for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++)
- interfaces[j].tagBits &= ~InterfaceVisited;
- }
- if (ambiguous != null)
- return ambiguous;
- }
- if (visibleMemberType != null)
- return visibleMemberType;
- if (notVisible != null)
- return new ProblemReferenceBinding(typeName, notVisible, NotVisible);
- return null;
- }
-
- // Internal use only
- public MethodBinding findMethod(
- ReferenceBinding receiverType,
- char[] selector,
- TypeBinding[] argumentTypes,
- InvocationSite invocationSite) {
-
- ReferenceBinding currentType = receiverType;
- MethodBinding matchingMethod = null;
- ObjectVector found = new ObjectVector();
-
- compilationUnitScope().recordTypeReference(receiverType);
- compilationUnitScope().recordTypeReferences(argumentTypes);
-
- if (currentType.isInterface()) {
- MethodBinding[] currentMethods = currentType.getMethods(selector);
- int currentLength = currentMethods.length;
- if (currentLength == 1) {
- matchingMethod = currentMethods[0];
- } else if (currentLength > 1) {
- found.addAll(currentMethods);
- }
- matchingMethod = findMethodInSuperInterfaces(currentType, selector, found, matchingMethod);
- currentType = getJavaLangObject();
- }
-
- // superclass lookup
- ReferenceBinding classHierarchyStart = currentType;
- while (currentType != null) {
- MethodBinding[] currentMethods = currentType.getMethods(selector);
- int currentLength = currentMethods.length;
- if (currentLength == 1 && matchingMethod == null && found.size == 0) {
- matchingMethod = currentMethods[0];
- } else if (currentLength > 0) {
- if (matchingMethod != null) {
- found.add(matchingMethod);
- matchingMethod = null;
- }
- found.addAll(currentMethods);
- }
- currentType = currentType.superclass();
- }
-
- int foundSize = found.size;
- if (foundSize == 0) {
- if (matchingMethod != null && areParametersAssignable(matchingMethod.parameters, argumentTypes))
- return matchingMethod;
- return findDefaultAbstractMethod(receiverType, selector, argumentTypes, invocationSite, classHierarchyStart, matchingMethod, found);
- }
-
- MethodBinding[] candidates = new MethodBinding[foundSize];
- int candidatesCount = 0;
- // argument type compatibility check
- for (int i = 0; i < foundSize; i++) {
- MethodBinding methodBinding = (MethodBinding) found.elementAt(i);
- if (areParametersAssignable(methodBinding.parameters, argumentTypes))
- candidates[candidatesCount++] = methodBinding;
- }
- if (candidatesCount == 1) {
- compilationUnitScope().recordTypeReferences(candidates[0].thrownExceptions);
- return candidates[0]; // have not checked visibility
- }
- if (candidatesCount == 0) { // try to find a close match when the parameter order is wrong or missing some parameters
- MethodBinding interfaceMethod =
- findDefaultAbstractMethod(receiverType, selector, argumentTypes, invocationSite, classHierarchyStart, matchingMethod, found);
- if (interfaceMethod != null) return interfaceMethod;
-
- int argLength = argumentTypes.length;
- foundSize = found.size;
- nextMethod : for (int i = 0; i < foundSize; i++) {
- MethodBinding methodBinding = (MethodBinding) found.elementAt(i);
- TypeBinding[] params = methodBinding.parameters;
- int paramLength = params.length;
- nextArg: for (int a = 0; a < argLength; a++) {
- TypeBinding arg = argumentTypes[a];
- for (int p = 0; p < paramLength; p++)
- if (params[p] == arg)
- continue nextArg;
- continue nextMethod;
- }
- return methodBinding;
- }
- return (MethodBinding) found.elementAt(0); // no good match so just use the first one found
- }
-
- // visibility check
- int visiblesCount = 0;
- for (int i = 0; i < candidatesCount; i++) {
- MethodBinding methodBinding = candidates[i];
- if (methodBinding.canBeSeenBy(receiverType, invocationSite, this)) {
- if (visiblesCount != i) {
- candidates[i] = null;
- candidates[visiblesCount] = methodBinding;
- }
- visiblesCount++;
- }
- }
- if (visiblesCount == 1) {
- compilationUnitScope().recordTypeReferences(candidates[0].thrownExceptions);
- return candidates[0];
- }
- if (visiblesCount == 0) {
- MethodBinding interfaceMethod =
- findDefaultAbstractMethod(receiverType, selector, argumentTypes, invocationSite, classHierarchyStart, matchingMethod, found);
- if (interfaceMethod != null) return interfaceMethod;
- return new ProblemMethodBinding(candidates[0].selector, argumentTypes, candidates[0].declaringClass, NotVisible);
- }
- if (candidates[0].declaringClass.isClass()) {
- return mostSpecificClassMethodBinding(candidates, visiblesCount);
- } else {
- return mostSpecificInterfaceMethodBinding(candidates, visiblesCount);
- }
- }
-
- // abstract method lookup lookup (since maybe missing default abstract methods)
- public MethodBinding findDefaultAbstractMethod(
- ReferenceBinding receiverType,
- char[] selector,
- TypeBinding[] argumentTypes,
- InvocationSite invocationSite,
- ReferenceBinding classHierarchyStart,
- MethodBinding matchingMethod,
- ObjectVector found) {
-
- int startFoundSize = found.size;
- ReferenceBinding currentType = classHierarchyStart;
- while (currentType != null) {
- matchingMethod = findMethodInSuperInterfaces(currentType, selector, found, matchingMethod);
- currentType = currentType.superclass();
- }
- int foundSize = found.size;
- if (foundSize == startFoundSize) return matchingMethod; // maybe null
-
- MethodBinding[] candidates = new MethodBinding[foundSize - startFoundSize];
- int candidatesCount = 0;
- // argument type compatibility check
- for (int i = startFoundSize; i < foundSize; i++) {
- MethodBinding methodBinding = (MethodBinding) found.elementAt(i);
- if (areParametersAssignable(methodBinding.parameters, argumentTypes))
- candidates[candidatesCount++] = methodBinding;
- }
- if (candidatesCount == 1) {
- compilationUnitScope().recordTypeReferences(candidates[0].thrownExceptions);
- return candidates[0];
- }
- if (candidatesCount == 0) { // try to find a close match when the parameter order is wrong or missing some parameters
- int argLength = argumentTypes.length;
- nextMethod : for (int i = 0; i < foundSize; i++) {
- MethodBinding methodBinding = (MethodBinding) found.elementAt(i);
- TypeBinding[] params = methodBinding.parameters;
- int paramLength = params.length;
- nextArg: for (int a = 0; a < argLength; a++) {
- TypeBinding arg = argumentTypes[a];
- for (int p = 0; p < paramLength; p++)
- if (params[p] == arg)
- continue nextArg;
- continue nextMethod;
- }
- return methodBinding;
- }
- return (MethodBinding) found.elementAt(0); // no good match so just use the first one found
- }
- // no need to check for visibility - interface methods are public
- return mostSpecificInterfaceMethodBinding(candidates, candidatesCount);
- }
-
- public MethodBinding findMethodInSuperInterfaces(
- ReferenceBinding currentType,
- char[] selector,
- ObjectVector found,
- MethodBinding matchingMethod) {
-
- ReferenceBinding[] itsInterfaces = currentType.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- ReferenceBinding[][] interfacesToVisit = new ReferenceBinding[5][];
- int lastPosition = -1;
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit, 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][], 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
-
- for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++) {
- currentType = interfaces[j];
- if ((currentType.tagBits & InterfaceVisited) == 0) {
- // if interface as not already been visited
- currentType.tagBits |= InterfaceVisited;
-
- MethodBinding[] currentMethods = currentType.getMethods(selector);
- int currentLength = currentMethods.length;
- if (currentLength == 1 && matchingMethod == null && found.size == 0) {
- matchingMethod = currentMethods[0];
- } else if (currentLength > 0) {
- if (matchingMethod != null) {
- found.add(matchingMethod);
- matchingMethod = null;
- }
- found.addAll(currentMethods);
- }
- itsInterfaces = currentType.superInterfaces();
- if (itsInterfaces != NoSuperInterfaces) {
- if (++lastPosition == interfacesToVisit.length)
- System.arraycopy(
- interfacesToVisit, 0,
- interfacesToVisit = new ReferenceBinding[lastPosition * 2][], 0,
- lastPosition);
- interfacesToVisit[lastPosition] = itsInterfaces;
- }
- }
- }
- }
-
- // bit reinitialization
- for (int i = 0; i <= lastPosition; i++) {
- ReferenceBinding[] interfaces = interfacesToVisit[i];
- for (int j = 0, length = interfaces.length; j < length; j++)
- interfaces[j].tagBits &= ~InterfaceVisited;
- }
- }
- return matchingMethod;
- }
-
- // Internal use only
- public MethodBinding findMethodForArray(
- ArrayBinding receiverType,
- char[] selector,
- TypeBinding[] argumentTypes,
- InvocationSite invocationSite) {
-
- ReferenceBinding object = getJavaLangObject();
- MethodBinding methodBinding = object.getExactMethod(selector, argumentTypes);
- if (methodBinding != null) {
- // handle the method clone() specially... cannot be protected or throw exceptions
- if (argumentTypes == NoParameters && CharOperation.equals(selector, CLONE))
- return new MethodBinding(
- (methodBinding.modifiers ^ AccProtected) | AccPublic,
- CLONE,
- methodBinding.returnType,
- argumentTypes,
- null,
- object);
- if (methodBinding.canBeSeenBy(receiverType, invocationSite, this))
- return methodBinding;
- }
- // answers closest approximation, may not check argumentTypes or visibility
- methodBinding = findMethod(object, selector, argumentTypes, invocationSite);
- if (methodBinding == null)
- return new ProblemMethodBinding(selector, argumentTypes, NotFound);
- if (methodBinding.isValidBinding()) {
- if (!areParametersAssignable(methodBinding.parameters, argumentTypes))
- return new ProblemMethodBinding(
- methodBinding,
- selector,
- argumentTypes,
- NotFound);
- if (!methodBinding.canBeSeenBy(receiverType, invocationSite, this))
- return new ProblemMethodBinding(
- selector,
- argumentTypes,
- methodBinding.declaringClass,
- NotVisible);
- }
- return methodBinding;
- }
-
- // Internal use only
- public ReferenceBinding findType(
- char[] typeName,
- PackageBinding declarationPackage,
- PackageBinding invocationPackage) {
-
- compilationUnitScope().recordReference(declarationPackage.compoundName, typeName);
- ReferenceBinding typeBinding = declarationPackage.getType(typeName);
- if (typeBinding == null)
- return null;
-
- if (typeBinding.isValidBinding()) {
-// Not convinced that this is necessary
-// compilationUnitScope().recordTypeReference(typeBinding); // to record supertypes
- if (declarationPackage != invocationPackage && !typeBinding.canBeSeenBy(invocationPackage))
- return new ProblemReferenceBinding(typeName, typeBinding, NotVisible);
- }
- return typeBinding;
- }
-
- public TypeBinding getBaseType(char[] name) {
- // list should be optimized (with most often used first)
- int length = name.length;
- if (length > 2 && length < 8) {
- switch (name[0]) {
- case 'i' :
- if (length == 3 && name[1] == 'n' && name[2] == 't')
- return IntBinding;
- break;
- case 'v' :
- if (length == 4 && name[1] == 'o' && name[2] == 'i' && name[3] == 'd')
- return VoidBinding;
- break;
- case 'b' :
- if (length == 7
- && name[1] == 'o'
- && name[2] == 'o'
- && name[3] == 'l'
- && name[4] == 'e'
- && name[5] == 'a'
- && name[6] == 'n')
- return BooleanBinding;
- if (length == 4 && name[1] == 'y' && name[2] == 't' && name[3] == 'e')
- return ByteBinding;
- break;
- case 'c' :
- if (length == 4 && name[1] == 'h' && name[2] == 'a' && name[3] == 'r')
- return CharBinding;
- break;
- case 'd' :
- if (length == 6
- && name[1] == 'o'
- && name[2] == 'u'
- && name[3] == 'b'
- && name[4] == 'l'
- && name[5] == 'e')
- return DoubleBinding;
- break;
- case 'f' :
- if (length == 5
- && name[1] == 'l'
- && name[2] == 'o'
- && name[3] == 'a'
- && name[4] == 't')
- return FloatBinding;
- break;
- case 'l' :
- if (length == 4 && name[1] == 'o' && name[2] == 'n' && name[3] == 'g')
- return LongBinding;
- break;
- case 's' :
- if (length == 5
- && name[1] == 'h'
- && name[2] == 'o'
- && name[3] == 'r'
- && name[4] == 't')
- return ShortBinding;
- }
- }
- return null;
- }
-
- public final PackageBinding getCurrentPackage() {
- Scope scope, unitScope = this;
- while ((scope = unitScope.parent) != null)
- unitScope = scope;
- return ((CompilationUnitScope) unitScope).fPackage;
- }
-
- public final ReferenceBinding getJavaIoSerializable() {
- compilationUnitScope().recordQualifiedReference(JAVA_IO_SERIALIZABLE);
- ReferenceBinding type = environment().getType(JAVA_IO_SERIALIZABLE);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_IO_SERIALIZABLE, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangClass() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_CLASS);
- ReferenceBinding type = environment().getType(JAVA_LANG_CLASS);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_CLASS, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangCloneable() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_CLONEABLE);
- ReferenceBinding type = environment().getType(JAVA_LANG_CLONEABLE);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_CLONEABLE, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangError() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_ERROR);
- ReferenceBinding type = environment().getType(JAVA_LANG_ERROR);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_ERROR, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangAssertionError() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_ASSERTIONERROR);
- ReferenceBinding type = environment().getType(JAVA_LANG_ASSERTIONERROR);
- if (type != null) return type;
- problemReporter().isClassPathCorrect(JAVA_LANG_ASSERTIONERROR, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangObject() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_OBJECT);
- ReferenceBinding type = environment().getType(JAVA_LANG_OBJECT);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_OBJECT, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangRuntimeException() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_RUNTIMEEXCEPTION);
- ReferenceBinding type = environment().getType(JAVA_LANG_RUNTIMEEXCEPTION);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_RUNTIMEEXCEPTION, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangString() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_STRING);
- ReferenceBinding type = environment().getType(JAVA_LANG_STRING);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_STRING, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- public final ReferenceBinding getJavaLangThrowable() {
- compilationUnitScope().recordQualifiedReference(JAVA_LANG_THROWABLE);
- ReferenceBinding type = environment().getType(JAVA_LANG_THROWABLE);
- if (type != null) return type;
-
- problemReporter().isClassPathCorrect(JAVA_LANG_THROWABLE, referenceCompilationUnit());
- return null; // will not get here since the above error aborts the compilation
- }
-
- /* Answer the type binding corresponding to the typeName argument, relative to the enclosingType.
- */
- public final ReferenceBinding getMemberType(char[] typeName, ReferenceBinding enclosingType) {
- ReferenceBinding memberType = findMemberType(typeName, enclosingType);
- if (memberType != null) return memberType;
- return new ProblemReferenceBinding(typeName, NotFound);
- }
-
- /* Answer the type binding corresponding to the compoundName.
- *
- * NOTE: If a problem binding is returned, senders should extract the compound name
- * from the binding & not assume the problem applies to the entire compoundName.
- */
- public final TypeBinding getType(char[][] compoundName) {
- int typeNameLength = compoundName.length;
- if (typeNameLength == 1) {
- // Would like to remove this test and require senders to specially handle base types
- TypeBinding binding = getBaseType(compoundName[0]);
- if (binding != null) return binding;
- }
-
- compilationUnitScope().recordQualifiedReference(compoundName);
- Binding binding =
- getTypeOrPackage(compoundName[0], typeNameLength == 1 ? TYPE : TYPE | PACKAGE);
- if (binding == null)
- return new ProblemReferenceBinding(compoundName[0], NotFound);
- if (!binding.isValidBinding())
- return (ReferenceBinding) binding;
-
- int currentIndex = 1;
- boolean checkVisibility = false;
- if (binding instanceof PackageBinding) {
- PackageBinding packageBinding = (PackageBinding) binding;
- while (currentIndex < typeNameLength) {
- binding = packageBinding.getTypeOrPackage(compoundName[currentIndex++]); // does not check visibility
- if (binding == null)
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- NotFound);
- if (!binding.isValidBinding())
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- binding.problemId());
- if (!(binding instanceof PackageBinding))
- break;
- packageBinding = (PackageBinding) binding;
- }
- if (binding instanceof PackageBinding)
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- NotFound);
- checkVisibility = true;
- }
-
- // binding is now a ReferenceBinding
- ReferenceBinding typeBinding = (ReferenceBinding) binding;
- compilationUnitScope().recordTypeReference(typeBinding); // to record supertypes
- if (checkVisibility) // handles the fall through case
- if (!typeBinding.canBeSeenBy(this))
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- typeBinding,
- NotVisible);
-
- while (currentIndex < typeNameLength) {
- typeBinding = getMemberType(compoundName[currentIndex++], typeBinding);
- if (!typeBinding.isValidBinding())
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- typeBinding.problemId());
- }
- return typeBinding;
- }
-
- /* Answer the type binding that corresponds the given name, starting the lookup in the receiver.
- * The name provided is a simple source name (e.g., "Object" , "Point", ...)
- */
- // The return type of this method could be ReferenceBinding if we did not answer base types.
- // NOTE: We could support looking for Base Types last in the search, however any code using
- // this feature would be extraordinarily slow. Therefore we don't do this
- public final TypeBinding getType(char[] name) {
- // Would like to remove this test and require senders to specially handle base types
- TypeBinding binding = getBaseType(name);
- if (binding != null) return binding;
- return (ReferenceBinding) getTypeOrPackage(name, TYPE);
- }
-
- // Added for code assist... NOT Public API
- public final Binding getTypeOrPackage(char[][] compoundName) {
- int nameLength = compoundName.length;
- if (nameLength == 1) {
- TypeBinding binding = getBaseType(compoundName[0]);
- if (binding != null) return binding;
- }
- Binding binding = getTypeOrPackage(compoundName[0], TYPE | PACKAGE);
- if (!binding.isValidBinding()) return binding;
-
- int currentIndex = 1;
- boolean checkVisibility = false;
- if (binding instanceof PackageBinding) {
- PackageBinding packageBinding = (PackageBinding) binding;
-
- while (currentIndex < nameLength) {
- binding = packageBinding.getTypeOrPackage(compoundName[currentIndex++]);
- if (binding == null)
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- NotFound);
- if (!binding.isValidBinding())
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- binding.problemId());
- if (!(binding instanceof PackageBinding))
- break;
- packageBinding = (PackageBinding) binding;
- }
- if (binding instanceof PackageBinding) return binding;
- checkVisibility = true;
- }
- // binding is now a ReferenceBinding
- ReferenceBinding typeBinding = (ReferenceBinding) binding;
- if (checkVisibility) // handles the fall through case
- if (!typeBinding.canBeSeenBy(this))
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- typeBinding,
- NotVisible);
-
- while (currentIndex < nameLength) {
- typeBinding = getMemberType(compoundName[currentIndex++], typeBinding);
- // checks visibility
- if (!typeBinding.isValidBinding())
- return new ProblemReferenceBinding(
- CharOperation.subarray(compoundName, 0, currentIndex),
- typeBinding.problemId());
- }
- return typeBinding;
- }
-
- /* Internal use only
- */
- final Binding getTypeOrPackage(char[] name, int mask) {
-
- Scope scope = this;
- ReferenceBinding foundType = null;
- if ((mask & TYPE) == 0) {
- Scope next = scope;
- while ((next = scope.parent) != null)
- scope = next;
- } else {
- done : while (true) { // done when a COMPILATION_UNIT_SCOPE is found
- switch (scope.kind) {
- case METHOD_SCOPE :
- case BLOCK_SCOPE :
- ReferenceBinding localType = ((BlockScope) scope).findLocalType(name); // looks in this scope only
- if (localType != null) {
- if (foundType != null && foundType != localType)
- return new ProblemReferenceBinding(name, InheritedNameHidesEnclosingName);
- return localType;
- }
- break;
- case CLASS_SCOPE :
- SourceTypeBinding sourceType = ((ClassScope) scope).referenceContext.binding;
- if (CharOperation.equals(sourceType.sourceName, name)) {
- if (foundType != null && foundType != sourceType)
- return new ProblemReferenceBinding(name, InheritedNameHidesEnclosingName);
- return sourceType;
- }
-
- ReferenceBinding memberType = findMemberType(name, sourceType);
- if (memberType != null) { // skip it if we did not find anything
- if (memberType.problemId() == Ambiguous) {
- if (foundType == null || foundType.problemId() == NotVisible)
- // supercedes any potential InheritedNameHidesEnclosingName problem
- return memberType;
- else
- // make the user qualify the type, likely wants the first inherited type
- return new ProblemReferenceBinding(name, InheritedNameHidesEnclosingName);
- }
- if (memberType.isValidBinding()) {
- if (sourceType == memberType.enclosingType()
- || environment().options.complianceLevel >= CompilerOptions.JDK1_4) {
- // found a valid type in the 'immediate' scope (ie. not inherited)
- // OR in 1.4 mode (inherited shadows enclosing)
- if (foundType == null)
- return memberType;
- if (foundType.isValidBinding())
- // if a valid type was found, complain when another is found in an 'immediate' enclosing type (ie. not inherited)
- if (foundType != memberType)
- return new ProblemReferenceBinding(name, InheritedNameHidesEnclosingName);
- }
- }
- if (foundType == null || (foundType.problemId() == NotVisible && memberType.problemId() != NotVisible))
- // only remember the memberType if its the first one found or the previous one was not visible & memberType is...
- foundType = memberType;
- }
- break;
- case COMPILATION_UNIT_SCOPE :
- break done;
- }
- scope = scope.parent;
- }
- if (foundType != null && foundType.problemId() != NotVisible)
- return foundType;
- }
-
- // at this point the scope is a compilation unit scope
- CompilationUnitScope unitScope = (CompilationUnitScope) scope;
- // ask for the imports + name
- if ((mask & TYPE) != 0) {
- // check single type imports.
- ImportBinding[] imports = unitScope.imports;
- if (imports != null){
- // copy the list, since single type imports are removed if they cannot be resolved
- for (int i = 0, length = imports.length; i < length; i++) {
- ImportBinding typeImport = imports[i];
- if (!typeImport.onDemand)
- if (CharOperation.equals(typeImport.compoundName[typeImport.compoundName.length - 1], name))
- if (unitScope.resolveSingleTypeImport(typeImport) != null) {
- if (typeImport.reference != null) typeImport.reference.used = true;
- return typeImport.resolvedImport; // already know its visible
- }
- }
- }
- // check if the name is in the current package (answer the problem binding unless its not found in which case continue to look)
- ReferenceBinding type = findType(name, unitScope.fPackage, unitScope.fPackage); // is always visible
- if (type != null) return type;
-
- // check on demand imports
- boolean foundInImport = false;
- if (imports != null){
- for (int i = 0, length = imports.length; i < length; i++) {
- ImportBinding someImport = imports[i];
- if (someImport.onDemand) {
- Binding resolvedImport = someImport.resolvedImport;
- ReferenceBinding temp =
- (resolvedImport instanceof PackageBinding)
- ? findType(name, (PackageBinding) resolvedImport, unitScope.fPackage)
- : findDirectMemberType(name, (ReferenceBinding) resolvedImport);
- if (temp != null && temp.isValidBinding()) {
- if (someImport.reference != null) someImport.reference.used = true;
- if (foundInImport)
- // Answer error binding -- import on demand conflict; name found in two import on demand packages.
- return new ProblemReferenceBinding(name, Ambiguous);
- type = temp;
- foundInImport = true;
- }
- }
- }
- }
- if (type != null)
- return type;
- }
- // see if the name is a package
- if ((mask & PACKAGE) != 0) {
- compilationUnitScope().recordSimpleReference(name);
- PackageBinding packageBinding = unitScope.environment.getTopLevelPackage(name);
- if (packageBinding != null)
- return packageBinding;
- }
-
- compilationUnitScope().recordSimpleReference(name);
- // Answer error binding -- could not find name
- if (foundType != null){
- return foundType;
- }
- return new ProblemReferenceBinding(name, NotFound);
- }
-
- /* Answer whether the type is defined in the same compilation unit as the receiver
- */
- public final boolean isDefinedInSameUnit(ReferenceBinding type) {
- // find the outer most enclosing type
- ReferenceBinding enclosingType = type;
- while ((type = enclosingType.enclosingType()) != null)
- enclosingType = type;
-
- // find the compilation unit scope
- Scope scope, unitScope = this;
- while ((scope = unitScope.parent) != null)
- unitScope = scope;
-
- // test that the enclosingType is not part of the compilation unit
- SourceTypeBinding[] topLevelTypes =
- ((CompilationUnitScope) unitScope).topLevelTypes;
- for (int i = topLevelTypes.length; --i >= 0;)
- if (topLevelTypes[i] == enclosingType)
- return true;
- return false;
- }
-
- public final boolean isJavaIoSerializable(TypeBinding tb) {
- //a first -none optimized version-...:-)....
- //please modify as needed
-
- return tb == getJavaIoSerializable();
- }
-
- public final boolean isJavaLangCloneable(TypeBinding tb) {
- //a first -none optimized version-...:-)....
- //please modify as needed
-
- return tb == getJavaLangCloneable();
- }
-
- public final boolean isJavaLangObject(TypeBinding type) {
- return type.id == T_JavaLangObject;
- }
-
- public final MethodScope methodScope() {
- Scope scope = this;
- do {
- if (scope instanceof MethodScope)
- return (MethodScope) scope;
- scope = scope.parent;
- } while (scope != null);
- return null;
- }
-
- // Internal use only
- /* All methods in visible are acceptable matches for the method in question...
- * The methods defined by the receiver type appear before those defined by its
- * superclass and so on. We want to find the one which matches best.
- *
- * Since the receiver type is a class, we know each method's declaring class is
- * either the receiver type or one of its superclasses. It is an error if the best match
- * is defined by a superclass, when a lesser match is defined by the receiver type
- * or a closer superclass.
- */
- protected final MethodBinding mostSpecificClassMethodBinding(MethodBinding[] visible, int visibleSize) {
-
- MethodBinding method = null;
- MethodBinding previous = null;
-
- nextVisible : for (int i = 0; i < visibleSize; i++) {
- method = visible[i];
-
- if (previous != null && method.declaringClass != previous.declaringClass)
- break; // cannot answer a method farther up the hierarchy than the first method found
- previous = method;
- for (int j = 0; j < visibleSize; j++) {
- if (i == j) continue;
- MethodBinding next = visible[j];
- if (!areParametersAssignable(next.parameters, method.parameters))
- continue nextVisible;
- }
- compilationUnitScope().recordTypeReferences(method.thrownExceptions);
- return method;
- }
- return new ProblemMethodBinding(visible[0].selector, visible[0].parameters, Ambiguous);
- }
-
- // Internal use only
- /* All methods in visible are acceptable matches for the method in question...
- * Since the receiver type is an interface, we ignore the possibility that 2 inherited
- * but unrelated superinterfaces may define the same method in acceptable but
- * not identical ways... we just take the best match that we find since any class which
- * implements the receiver interface MUST implement all signatures for the method...
- * in which case the best match is correct.
- *
- * NOTE: This is different than javac... in the following example, the message send of
- * bar(X) in class Y is supposed to be ambiguous. But any class which implements the
- * interface I MUST implement both signatures for bar. If this class was the receiver of
- * the message send instead of the interface I, then no problem would be reported.
- *
- interface I1 {
- void bar(J j);
- }
- interface I2 {
- // void bar(J j);
- void bar(Object o);
- }
- interface I extends I1, I2 {}
- interface J {}
-
- class X implements J {}
-
- class Y extends X {
- public void foo(I i, X x) { i.bar(x); }
- }
- */
- protected final MethodBinding mostSpecificInterfaceMethodBinding(MethodBinding[] visible, int visibleSize) {
- MethodBinding method = null;
- nextVisible : for (int i = 0; i < visibleSize; i++) {
- method = visible[i];
- for (int j = 0; j < visibleSize; j++) {
- if (i == j) continue;
- MethodBinding next = visible[j];
- if (!areParametersAssignable(next.parameters, method.parameters))
- continue nextVisible;
- }
- compilationUnitScope().recordTypeReferences(method.thrownExceptions);
- return method;
- }
- return new ProblemMethodBinding(visible[0].selector, visible[0].parameters, Ambiguous);
- }
-
- public final ClassScope outerMostClassScope() {
- ClassScope lastClassScope = null;
- Scope scope = this;
- do {
- if (scope instanceof ClassScope)
- lastClassScope = (ClassScope) scope;
- scope = scope.parent;
- } while (scope != null);
- return lastClassScope; // may answer null if no class around
- }
-
- public final MethodScope outerMostMethodScope() {
- MethodScope lastMethodScope = null;
- Scope scope = this;
- do {
- if (scope instanceof MethodScope)
- lastMethodScope = (MethodScope) scope;
- scope = scope.parent;
- } while (scope != null);
- return lastMethodScope; // may answer null if no method around
- }
-
- public final CompilationUnitDeclaration referenceCompilationUnit() {
- Scope scope, unitScope = this;
- while ((scope = unitScope.parent) != null)
- unitScope = scope;
- return ((CompilationUnitScope) unitScope).referenceContext;
- }
- // start position in this scope - for ordering scopes vs. variables
- int startIndex() {
- return 0;
- }
-}
\ No newline at end of file
git://git.phpeclipse.com / phpeclipse.git / blobdiff