X-Git-Url: http://git.phpeclipse.com diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/lookup/Scope.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/lookup/Scope.java deleted file mode 100644 index 858d480..0000000 --- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/lookup/Scope.java +++ /dev/null @@ -1,1262 +0,0 @@ -/******************************************************************************* - * 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