/**
* Cast expressions will considered as useful if removing them all would actually bind to a
* different method (no fine grain analysis on per casted argument basis, simply separate widening
* cast from narrowing ones)
*/
public static void checkNeedForArgumentCasts(
BlockScope scope,
Expression receiver,
TypeBinding receiverType,
MethodBinding binding,
Expression[] arguments,
TypeBinding[] argumentTypes,
final InvocationSite invocationSite) {
if (scope.compilerOptions().getSeverity(CompilerOptions.UnnecessaryTypeCheck)
== ProblemSeverities.Ignore) return;
int length = argumentTypes.length;
// iterate over arguments, and retrieve original argument types (before cast)
TypeBinding[] rawArgumentTypes = argumentTypes;
for (int i = 0; i < length; i++) {
Expression argument = arguments[i];
if (argument instanceof CastExpression) {
// narrowing conversion on base type may change value, thus necessary
if ((argument.bits & ASTNode.UnnecessaryCast) == 0 && argument.resolvedType.isBaseType()) {
continue;
}
TypeBinding castedExpressionType = ((CastExpression) argument).expression.resolvedType;
if (castedExpressionType == null) return; // cannot do better
// obvious identity cast
if (TypeBinding.equalsEquals(castedExpressionType, argumentTypes[i])) {
scope.problemReporter().unnecessaryCast((CastExpression) argument);
} else if (castedExpressionType == TypeBinding.NULL) {
continue; // tolerate null argument cast
} else if ((argument.implicitConversion & TypeIds.BOXING) != 0) {
continue; // boxing has a side effect: (int) char is not boxed as simple char
} else {
if (rawArgumentTypes == argumentTypes) {
System.arraycopy(
rawArgumentTypes, 0, rawArgumentTypes = new TypeBinding[length], 0, length);
}
// retain original argument type
rawArgumentTypes[i] = castedExpressionType;
}
}
}
// perform alternate lookup with original types
if (rawArgumentTypes != argumentTypes) {
checkAlternateBinding(
scope,
receiver,
receiverType,
binding,
arguments,
argumentTypes,
rawArgumentTypes,
invocationSite);
}
}
/**
* Complain if assigned expression is cast, but not actually used as such, e.g. Object o = (List)
* object;
*/
public static void checkNeedForAssignedCast(
BlockScope scope, TypeBinding expectedType, CastExpression rhs) {
CompilerOptions compilerOptions = scope.compilerOptions();
if (compilerOptions.getSeverity(CompilerOptions.UnnecessaryTypeCheck)
== ProblemSeverities.Ignore) return;
TypeBinding castedExpressionType = rhs.expression.resolvedType;
// int i = (byte) n; // cast still had side effect
// double d = (float) n; // cast to float is unnecessary
if (castedExpressionType == null || rhs.resolvedType.isBaseType()) return;
// if (castedExpressionType.id == T_null) return; // tolerate null expression cast
if (castedExpressionType.isCompatibleWith(expectedType, scope)) {
if (scope.environment().usesNullTypeAnnotations()) {
// are null annotations compatible, too?
if (NullAnnotationMatching.analyse(expectedType, castedExpressionType, -1).isAnyMismatch())
return; // already reported unchecked cast (nullness), say no more.
}
scope.problemReporter().unnecessaryCast(rhs);
}
}
/**
* Casting an enclosing instance will considered as useful if removing it would actually bind to a
* different type
*/
public static void checkNeedForEnclosingInstanceCast(
BlockScope scope,
Expression enclosingInstance,
TypeBinding enclosingInstanceType,
TypeBinding memberType) {
if (scope.compilerOptions().getSeverity(CompilerOptions.UnnecessaryTypeCheck)
== ProblemSeverities.Ignore) return;
TypeBinding castedExpressionType = ((CastExpression) enclosingInstance).expression.resolvedType;
if (castedExpressionType == null) return; // cannot do better
// obvious identity cast
if (TypeBinding.equalsEquals(castedExpressionType, enclosingInstanceType)) {
scope.problemReporter().unnecessaryCast((CastExpression) enclosingInstance);
} else if (castedExpressionType == TypeBinding.NULL) {
return; // tolerate null enclosing instance cast
} else {
TypeBinding alternateEnclosingInstanceType = castedExpressionType;
if (castedExpressionType.isBaseType() || castedExpressionType.isArrayType())
return; // error case
if (TypeBinding.equalsEquals(
memberType,
scope.getMemberType(
memberType.sourceName(), (ReferenceBinding) alternateEnclosingInstanceType))) {
scope.problemReporter().unnecessaryCast((CastExpression) enclosingInstance);
}
}
}
/*
* Creates the super class handle of the given type.
* Returns null if the type has no super class.
* Adds the simple name to the hierarchy missing types if the class is not found and returns null.
*/
private IType findSuperClass(IGenericType type, ReferenceBinding typeBinding) {
ReferenceBinding superBinding = typeBinding.superclass();
if (superBinding != null) {
superBinding = (ReferenceBinding) superBinding.erasure();
if (typeBinding.isHierarchyInconsistent()) {
if (superBinding.problemId() == ProblemReasons.NotFound) {
this.hasMissingSuperClass = true;
this.builder.hierarchy.missingTypes.add(
new String(superBinding.sourceName)); // note: this could be Map$Entry
return null;
} else if ((superBinding.id == TypeIds.T_JavaLangObject)) {
char[] superclassName;
char separator;
if (type instanceof IBinaryType) {
superclassName = ((IBinaryType) type).getSuperclassName();
separator = '/';
} else if (type instanceof ISourceType) {
superclassName = ((ISourceType) type).getSuperclassName();
separator = '.';
} else if (type instanceof HierarchyType) {
superclassName = ((HierarchyType) type).superclassName;
separator = '.';
} else {
return null;
}
if (superclassName
!= null) { // check whether subclass of Object due to broken hierarchy (as opposed to
// explicitly extending it)
int lastSeparator = CharOperation.lastIndexOf(separator, superclassName);
char[] simpleName =
lastSeparator == -1
? superclassName
: CharOperation.subarray(
superclassName, lastSeparator + 1, superclassName.length);
if (!CharOperation.equals(simpleName, TypeConstants.OBJECT)) {
this.hasMissingSuperClass = true;
this.builder.hierarchy.missingTypes.add(new String(simpleName));
return null;
}
}
}
}
for (int t = this.typeIndex; t >= 0; t--) {
if (TypeBinding.equalsEquals(this.typeBindings[t], superBinding)) {
return this.builder.getHandle(this.typeModels[t], superBinding);
}
}
}
return null;
}
/**
* Determines whether apparent unnecessary cast wasn't actually used to perform return type
* inference of generic method invocation or boxing.
*/
private boolean isIndirectlyUsed() {
if (this.expression instanceof MessageSend) {
MethodBinding method = ((MessageSend) this.expression).binding;
if (method instanceof ParameterizedGenericMethodBinding
&& ((ParameterizedGenericMethodBinding) method).inferredReturnType) {
if (this.expectedType == null) return true;
if (TypeBinding.notEquals(this.resolvedType, this.expectedType)) return true;
}
}
if (this.expectedType != null
&& this.resolvedType.isBaseType()
&& !this.resolvedType.isCompatibleWith(this.expectedType)) {
// boxing: Short s = (short) _byte
return true;
}
return false;
}
private boolean subTypeOfType(ReferenceBinding subType, ReferenceBinding typeBinding) {
if (typeBinding == null || subType == null) return false;
if (TypeBinding.equalsEquals(subType, typeBinding)) return true;
ReferenceBinding superclass = subType.superclass();
if (superclass != null) superclass = (ReferenceBinding) superclass.erasure();
// if (superclass != null && superclass.id == TypeIds.T_JavaLangObject &&
// subType.isHierarchyInconsistent()) return false;
if (subTypeOfType(superclass, typeBinding)) return true;
ReferenceBinding[] superInterfaces = subType.superInterfaces();
if (superInterfaces != null) {
for (int i = 0, length = superInterfaces.length; i < length; i++) {
ReferenceBinding superInterface = (ReferenceBinding) superInterfaces[i].erasure();
if (subTypeOfType(superInterface, typeBinding)) return true;
}
}
return false;
}
/**
* Cast expression code generation
*
* @param currentScope org.aspectj.org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.aspectj.org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
boolean annotatedCast = (this.type.bits & ASTNode.HasTypeAnnotations) != 0;
boolean needRuntimeCheckcast = (this.bits & ASTNode.GenerateCheckcast) != 0;
if (this.constant != Constant.NotAConstant) {
if (valueRequired
|| needRuntimeCheckcast
|| annotatedCast) { // Added for: 1F1W9IG: IVJCOM:WINNT - Compiler omits casting check
codeStream.generateConstant(this.constant, this.implicitConversion);
if (needRuntimeCheckcast || annotatedCast) {
codeStream.checkcast(this.type, this.resolvedType);
}
if (!valueRequired) {
// the resolveType cannot be double or long
codeStream.pop();
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
return;
}
this.expression.generateCode(
currentScope, codeStream, annotatedCast || valueRequired || needRuntimeCheckcast);
if (annotatedCast
|| (needRuntimeCheckcast
&& TypeBinding.notEquals(
this.expression.postConversionType(currentScope),
this.resolvedType
.erasure()))) { // no need to issue a checkcast if already done as genericCast
codeStream.checkcast(this.type, this.resolvedType);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else if (annotatedCast || needRuntimeCheckcast) {
switch (this.resolvedType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
break;
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
public TypeBinding resolveType(BlockScope scope) {
// compute a new constant if the cast is effective
this.constant = Constant.NotAConstant;
this.implicitConversion = TypeIds.T_undefined;
boolean exprContainCast = false;
TypeBinding castType = this.resolvedType = this.type.resolveType(scope);
if (scope.compilerOptions().sourceLevel >= ClassFileConstants.JDK1_8) {
this.expression.setExpressionContext(CASTING_CONTEXT);
if (this.expression instanceof FunctionalExpression) {
this.expression.setExpectedType(this.resolvedType);
this.bits |= ASTNode.DisableUnnecessaryCastCheck;
}
}
if (this.expression instanceof CastExpression) {
this.expression.bits |= ASTNode.DisableUnnecessaryCastCheck;
exprContainCast = true;
}
TypeBinding expressionType = this.expression.resolveType(scope);
if (this.expression instanceof MessageSend) {
MessageSend messageSend = (MessageSend) this.expression;
MethodBinding methodBinding = messageSend.binding;
if (methodBinding != null && methodBinding.isPolymorphic()) {
messageSend.binding =
scope
.environment()
.updatePolymorphicMethodReturnType(
(PolymorphicMethodBinding) methodBinding, castType);
if (TypeBinding.notEquals(expressionType, castType)) {
expressionType = castType;
this.bits |= ASTNode.DisableUnnecessaryCastCheck;
}
}
}
if (castType != null) {
if (expressionType != null) {
boolean nullAnnotationMismatch =
scope.compilerOptions().isAnnotationBasedNullAnalysisEnabled
&& NullAnnotationMatching.analyse(castType, expressionType, -1).isAnyMismatch();
boolean isLegal =
checkCastTypesCompatibility(scope, castType, expressionType, this.expression);
if (isLegal) {
this.expression.computeConversion(scope, castType, expressionType);
if ((this.bits & ASTNode.UnsafeCast) != 0) { // unsafe cast
if (scope.compilerOptions().reportUnavoidableGenericTypeProblems
|| !(expressionType.isRawType()
&& this.expression.forcedToBeRaw(scope.referenceContext()))) {
scope.problemReporter().unsafeCast(this, scope);
}
} else if (nullAnnotationMismatch) {
// report null annotation issue at medium priority
scope.problemReporter().unsafeNullnessCast(this, scope);
} else {
if (castType.isRawType()
&& scope.compilerOptions().getSeverity(CompilerOptions.RawTypeReference)
!= ProblemSeverities.Ignore) {
scope.problemReporter().rawTypeReference(this.type, castType);
}
if ((this.bits & (ASTNode.UnnecessaryCast | ASTNode.DisableUnnecessaryCastCheck))
== ASTNode.UnnecessaryCast) { // unnecessary cast
if (!isIndirectlyUsed()) // used for generic type inference or boxing ?
scope.problemReporter().unnecessaryCast(this);
}
}
} else { // illegal cast
if ((castType.tagBits & TagBits.HasMissingType) == 0) { // no complaint if secondary error
scope.problemReporter().typeCastError(this, castType, expressionType);
}
this.bits |= ASTNode.DisableUnnecessaryCastCheck; // disable further secondary diagnosis
}
}
this.resolvedType =
castType.capture(
scope,
this.type.sourceStart,
this.type.sourceEnd); // make it unique, a cast expression shares source end with the
// expression.
if (exprContainCast) {
checkNeedForCastCast(scope, this);
}
}
return this.resolvedType;
}
public boolean checkUnsafeCast(
Scope scope,
TypeBinding castType,
TypeBinding expressionType,
TypeBinding match,
boolean isNarrowing) {
if (TypeBinding.equalsEquals(match, castType)) {
if (!isNarrowing
&& TypeBinding.equalsEquals(
match,
this.resolvedType
.leafComponentType()) // do not tag as unnecessary when recursing through upper
// bounds
&& !(expressionType.isParameterizedType()
&& expressionType.isProvablyDistinct(castType))) {
tagAsUnnecessaryCast(scope, castType);
}
return true;
}
if (match != null) {
if (isNarrowing
? match.isProvablyDistinct(expressionType)
: castType.isProvablyDistinct(match)) {
return false;
}
}
switch (castType.kind()) {
case Binding.PARAMETERIZED_TYPE:
if (!castType.isReifiable()) {
if (match == null) { // unrelated types
this.bits |= ASTNode.UnsafeCast;
return true;
}
switch (match.kind()) {
case Binding.PARAMETERIZED_TYPE:
if (isNarrowing) {
// [JLS 5.5] T <: S
if (expressionType.isRawType() || !expressionType.isEquivalentTo(match)) {
this.bits |= ASTNode.UnsafeCast;
return true;
}
// [JLS 5.5] S has no subtype X != T, such that |X| == |T|
// if I2<T,U> extends I1<T>, then cast from I1<T> to I2<T,U> is unchecked
ParameterizedTypeBinding paramCastType = (ParameterizedTypeBinding) castType;
ParameterizedTypeBinding paramMatch = (ParameterizedTypeBinding) match;
// easy case if less parameters on match
TypeBinding[] castArguments = paramCastType.arguments;
int length = castArguments == null ? 0 : castArguments.length;
if (paramMatch.arguments == null || length > paramMatch.arguments.length) {
this.bits |= ASTNode.UnsafeCast;
} else if ((paramCastType.tagBits
& (TagBits.HasDirectWildcard | TagBits.HasTypeVariable))
!= 0) {
// verify alternate cast type, substituting different type arguments
nextAlternateArgument:
for (int i = 0; i < length; i++) {
switch (castArguments[i].kind()) {
case Binding.WILDCARD_TYPE:
case Binding.TYPE_PARAMETER:
break; // check substituting with other
default:
continue nextAlternateArgument; // no alternative possible
}
TypeBinding[] alternateArguments;
// need to clone for each iteration to avoid env paramtype cache interference
System.arraycopy(
paramCastType.arguments,
0,
alternateArguments = new TypeBinding[length],
0,
length);
alternateArguments[i] = scope.getJavaLangObject();
LookupEnvironment environment = scope.environment();
ParameterizedTypeBinding alternateCastType =
environment.createParameterizedType(
(ReferenceBinding) castType.erasure(),
alternateArguments,
castType.enclosingType());
if (TypeBinding.equalsEquals(
alternateCastType.findSuperTypeOriginatingFrom(expressionType), match)) {
this.bits |= ASTNode.UnsafeCast;
break;
}
}
}
return true;
} else {
// [JLS 5.5] T >: S
if (!match.isEquivalentTo(castType)) {
this.bits |= ASTNode.UnsafeCast;
return true;
}
}
break;
case Binding.RAW_TYPE:
this.bits |=
ASTNode.UnsafeCast; // upcast since castType is known to be bound paramType
return true;
default:
if (isNarrowing) {
// match is not parameterized or raw, then any other subtype of match will erase to
// |T|
this.bits |= ASTNode.UnsafeCast;
return true;
}
break;
}
}
break;
case Binding.ARRAY_TYPE:
TypeBinding leafType = castType.leafComponentType();
if (isNarrowing && (!leafType.isReifiable() || leafType.isTypeVariable())) {
this.bits |= ASTNode.UnsafeCast;
return true;
}
break;
case Binding.TYPE_PARAMETER:
this.bits |= ASTNode.UnsafeCast;
return true;
// (disabled) https://bugs.eclipse.org/bugs/show_bug.cgi?id=240807
// case Binding.TYPE :
// if (isNarrowing && match == null && expressionType.isParameterizedType()) {
// this.bits |= ASTNode.UnsafeCast;
// return true;
// }
// break;
}
if (!isNarrowing
&& TypeBinding.equalsEquals(
match,
this.resolvedType
.leafComponentType())) { // do not tag as unnecessary when recursing through upper
// bounds
tagAsUnnecessaryCast(scope, castType);
}
return true;
}
private static void checkAlternateBinding(
BlockScope scope,
Expression receiver,
TypeBinding receiverType,
MethodBinding binding,
Expression[] arguments,
TypeBinding[] originalArgumentTypes,
TypeBinding[] alternateArgumentTypes,
final InvocationSite invocationSite) {
InvocationSite fakeInvocationSite =
new InvocationSite() {
public TypeBinding[] genericTypeArguments() {
return null;
}
public boolean isSuperAccess() {
return invocationSite.isSuperAccess();
}
public boolean isTypeAccess() {
return invocationSite.isTypeAccess();
}
public void setActualReceiverType(ReferenceBinding actualReceiverType) {
/* ignore */
}
public void setDepth(int depth) {
/* ignore */
}
public void setFieldIndex(int depth) {
/* ignore */
}
public int sourceStart() {
return 0;
}
public int sourceEnd() {
return 0;
}
public TypeBinding invocationTargetType() {
return invocationSite.invocationTargetType();
}
public boolean receiverIsImplicitThis() {
return invocationSite.receiverIsImplicitThis();
}
public InferenceContext18 freshInferenceContext(Scope someScope) {
return invocationSite.freshInferenceContext(someScope);
}
public ExpressionContext getExpressionContext() {
return invocationSite.getExpressionContext();
}
public boolean isQualifiedSuper() {
return invocationSite.isQualifiedSuper();
}
public boolean checkingPotentialCompatibility() {
return false;
}
public void acceptPotentiallyCompatibleMethods(MethodBinding[] methods) {
/* ignore */
}
};
MethodBinding bindingIfNoCast;
if (binding.isConstructor()) {
bindingIfNoCast =
scope.getConstructor(
(ReferenceBinding) receiverType, alternateArgumentTypes, fakeInvocationSite);
} else {
bindingIfNoCast =
receiver.isImplicitThis()
? scope.getImplicitMethod(
binding.selector, alternateArgumentTypes, fakeInvocationSite)
: scope.getMethod(
receiverType, binding.selector, alternateArgumentTypes, fakeInvocationSite);
}
if (bindingIfNoCast == binding) {
int argumentLength = originalArgumentTypes.length;
if (binding.isVarargs()) {
int paramLength = binding.parameters.length;
if (paramLength == argumentLength) {
int varargsIndex = paramLength - 1;
ArrayBinding varargsType = (ArrayBinding) binding.parameters[varargsIndex];
TypeBinding lastArgType = alternateArgumentTypes[varargsIndex];
// originalType may be compatible already, but cast mandated
// to clarify between varargs/non-varargs call
if (varargsType.dimensions != lastArgType.dimensions()) {
return;
}
if (lastArgType.isCompatibleWith(varargsType.elementsType())
&& lastArgType.isCompatibleWith(varargsType)) {
return;
}
}
}
for (int i = 0; i < argumentLength; i++) {
if (TypeBinding.notEquals(originalArgumentTypes[i], alternateArgumentTypes[i])
/*&& !originalArgumentTypes[i].needsUncheckedConversion(alternateArgumentTypes[i])*/ ) {
scope.problemReporter().unnecessaryCast((CastExpression) arguments[i]);
}
}
}
}
/**
* Returns the constant intValue or ordinal for enum constants. If constant is NotAConstant, then
* answers Float.MIN_VALUE
*
* @see
* org.aspectj.org.eclipse.jdt.internal.compiler.ast.Statement#resolveCase(org.aspectj.org.eclipse.jdt.internal.compiler.lookup.BlockScope,
* org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TypeBinding,
* org.aspectj.org.eclipse.jdt.internal.compiler.ast.SwitchStatement)
*/
public Constant resolveCase(
BlockScope scope, TypeBinding switchExpressionType, SwitchStatement switchStatement) {
// switchExpressionType maybe null in error case
scope.enclosingCase = this; // record entering in a switch case block
if (this.constantExpression == null) {
// remember the default case into the associated switch statement
if (switchStatement.defaultCase != null) scope.problemReporter().duplicateDefaultCase(this);
// on error the last default will be the selected one ...
switchStatement.defaultCase = this;
return Constant.NotAConstant;
}
// add into the collection of cases of the associated switch statement
switchStatement.cases[switchStatement.caseCount++] = this;
// tag constant name with enum type for privileged access to its members
if (switchExpressionType != null
&& switchExpressionType.isEnum()
&& (this.constantExpression instanceof SingleNameReference)) {
((SingleNameReference) this.constantExpression)
.setActualReceiverType((ReferenceBinding) switchExpressionType);
}
TypeBinding caseType = this.constantExpression.resolveType(scope);
if (caseType == null || switchExpressionType == null) return Constant.NotAConstant;
if (this.constantExpression.isConstantValueOfTypeAssignableToType(
caseType, switchExpressionType)
|| caseType.isCompatibleWith(switchExpressionType)) {
if (caseType.isEnum()) {
if (((this.constantExpression.bits & ASTNode.ParenthesizedMASK)
>> ASTNode.ParenthesizedSHIFT)
!= 0) {
scope
.problemReporter()
.enumConstantsCannotBeSurroundedByParenthesis(this.constantExpression);
}
if (this.constantExpression instanceof NameReference
&& (this.constantExpression.bits & ASTNode.RestrictiveFlagMASK) == Binding.FIELD) {
NameReference reference = (NameReference) this.constantExpression;
FieldBinding field = reference.fieldBinding();
if ((field.modifiers & ClassFileConstants.AccEnum) == 0) {
scope.problemReporter().enumSwitchCannotTargetField(reference, field);
} else if (reference instanceof QualifiedNameReference) {
scope.problemReporter().cannotUseQualifiedEnumConstantInCaseLabel(reference, field);
}
return IntConstant.fromValue(
field.original().id
+ 1); // (ordinal value + 1) zero should not be returned see bug 141810
}
} else {
return this.constantExpression.constant;
}
} else if (isBoxingCompatible(caseType, switchExpressionType, this.constantExpression, scope)) {
// constantExpression.computeConversion(scope, caseType, switchExpressionType); - do not
// report boxing/unboxing conversion
return this.constantExpression.constant;
}
scope
.problemReporter()
.typeMismatchError(
caseType, switchExpressionType, this.constantExpression, switchStatement.expression);
return Constant.NotAConstant;
}
/*
* For all type bindings that have hierarchy problems, artificially fix their superclass/superInterfaces so that the connection
* can be made.
*/
private void fixSupertypeBindings() {
for (int current = this.typeIndex; current >= 0; current--) {
ReferenceBinding typeBinding = this.typeBindings[current];
if ((typeBinding.tagBits & TagBits.HierarchyHasProblems) == 0) continue;
if (typeBinding instanceof SourceTypeBinding) {
if (typeBinding instanceof LocalTypeBinding) {
LocalTypeBinding localTypeBinding = (LocalTypeBinding) typeBinding;
QualifiedAllocationExpression allocationExpression =
localTypeBinding.scope.referenceContext.allocation;
TypeReference type;
if (allocationExpression != null
&& (type = allocationExpression.type) != null
&& type.resolvedType != null) {
localTypeBinding.setSuperClass((ReferenceBinding) type.resolvedType);
continue;
}
}
ClassScope scope = ((SourceTypeBinding) typeBinding).scope;
if (scope != null) {
TypeDeclaration typeDeclaration = scope.referenceContext;
TypeReference superclassRef = typeDeclaration == null ? null : typeDeclaration.superclass;
TypeBinding superclass = superclassRef == null ? null : superclassRef.resolvedType;
if (superclass != null) {
superclass = superclass.closestMatch();
}
if (superclass instanceof ReferenceBinding) {
// ensure we are not creating a cycle (see
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=215681 )
if (!(subTypeOfType((ReferenceBinding) superclass, typeBinding))) {
((SourceTypeBinding) typeBinding).setSuperClass((ReferenceBinding) superclass);
}
}
TypeReference[] superInterfaces =
typeDeclaration == null ? null : typeDeclaration.superInterfaces;
int length;
ReferenceBinding[] interfaceBindings = typeBinding.superInterfaces();
if (superInterfaces != null
&& (length = superInterfaces.length)
> (interfaceBindings == null
? 0
: interfaceBindings
.length)) { // check for interfaceBindings being null (see
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=139689)
interfaceBindings = new ReferenceBinding[length];
int index = 0;
for (int i = 0; i < length; i++) {
TypeBinding superInterface = superInterfaces[i].resolvedType;
if (superInterface != null) {
superInterface = superInterface.closestMatch();
}
if (superInterface instanceof ReferenceBinding) {
// ensure we are not creating a cycle (see
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=215681 )
if (!(subTypeOfType((ReferenceBinding) superInterface, typeBinding))) {
interfaceBindings[index++] = (ReferenceBinding) superInterface;
}
}
}
if (index < length)
System.arraycopy(
interfaceBindings, 0, interfaceBindings = new ReferenceBinding[index], 0, index);
((SourceTypeBinding) typeBinding).setSuperInterfaces(interfaceBindings);
}
}
} else if (typeBinding instanceof BinaryTypeBinding) {
try {
typeBinding.superclass();
} catch (AbortCompilation e) {
// allow subsequent call to superclass() to succeed so that we don't have to catch
// AbortCompilation everywhere
((BinaryTypeBinding) typeBinding).tagBits &= ~TagBits.HasUnresolvedSuperclass;
this.builder.hierarchy.missingTypes.add(
new String(typeBinding.superclass().sourceName()));
this.hasMissingSuperClass = true;
}
try {
typeBinding.superInterfaces();
} catch (AbortCompilation e) {
// allow subsequent call to superInterfaces() to succeed so that we don't have to catch
// AbortCompilation everywhere
((BinaryTypeBinding) typeBinding).tagBits &= ~TagBits.HasUnresolvedSuperinterfaces;
}
}
}
}
/*
* Returns the handles of the super interfaces of the given type.
* Adds the simple name to the hierarchy missing types if an interface is not found (but don't put null in the returned array)
*/
private IType[] findSuperInterfaces(IGenericType type, ReferenceBinding typeBinding) {
char[][] superInterfaceNames;
char separator;
if (type instanceof IBinaryType) {
superInterfaceNames = ((IBinaryType) type).getInterfaceNames();
separator = '/';
} else if (type instanceof ISourceType) {
ISourceType sourceType = (ISourceType) type;
if (sourceType.isAnonymous()) { // if anonymous type
if (typeBinding.superInterfaces() != null && typeBinding.superInterfaces().length > 0) {
superInterfaceNames = new char[][] {sourceType.getSuperclassName()};
} else {
superInterfaceNames = sourceType.getInterfaceNames();
}
} else {
if (TypeDeclaration.kind(sourceType.getModifiers()) == TypeDeclaration.ANNOTATION_TYPE_DECL)
superInterfaceNames =
new char[][] {TypeConstants.CharArray_JAVA_LANG_ANNOTATION_ANNOTATION};
else superInterfaceNames = sourceType.getInterfaceNames();
}
separator = '.';
} else if (type instanceof HierarchyType) {
HierarchyType hierarchyType = (HierarchyType) type;
if (hierarchyType.isAnonymous()) { // if anonymous type
if (typeBinding.superInterfaces() != null && typeBinding.superInterfaces().length > 0) {
superInterfaceNames = new char[][] {hierarchyType.superclassName};
} else {
superInterfaceNames = hierarchyType.superInterfaceNames;
}
} else {
superInterfaceNames = hierarchyType.superInterfaceNames;
}
separator = '.';
} else {
return null;
}
ReferenceBinding[] interfaceBindings = typeBinding.superInterfaces();
int bindingIndex = 0;
int bindingLength = interfaceBindings == null ? 0 : interfaceBindings.length;
int length = superInterfaceNames == null ? 0 : superInterfaceNames.length;
IType[] superinterfaces = new IType[length];
int index = 0;
next:
for (int i = 0; i < length; i++) {
char[] superInterfaceName = superInterfaceNames[i];
int end = superInterfaceName.length;
// find the end of simple name
int genericStart = CharOperation.indexOf(Signature.C_GENERIC_START, superInterfaceName);
if (genericStart != -1) end = genericStart;
// find the start of simple name
int lastSeparator = CharOperation.lastIndexOf(separator, superInterfaceName, 0, end);
int start = lastSeparator + 1;
// case of binary inner type -> take the last part
int lastDollar = CharOperation.lastIndexOf('$', superInterfaceName, start);
if (lastDollar != -1) start = lastDollar + 1;
char[] simpleName = CharOperation.subarray(superInterfaceName, start, end);
if (bindingIndex < bindingLength) {
ReferenceBinding interfaceBinding =
(ReferenceBinding) interfaceBindings[bindingIndex].erasure();
// ensure that the binding corresponds to the interface defined by the user
if (CharOperation.equals(simpleName, interfaceBinding.sourceName)) {
bindingIndex++;
for (int t = this.typeIndex; t >= 0; t--) {
if (TypeBinding.equalsEquals(this.typeBindings[t], interfaceBinding)) {
IType handle = this.builder.getHandle(this.typeModels[t], interfaceBinding);
if (handle != null) {
superinterfaces[index++] = handle;
continue next;
}
}
}
}
}
this.builder.hierarchy.missingTypes.add(new String(simpleName));
}
if (index != length)
System.arraycopy(superinterfaces, 0, superinterfaces = new IType[index], 0, index);
return superinterfaces;
}