public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) == 0) {
// need assertion flag: $assertionsDisabled on outer most source clas
// (in case of static member of interface, will use the outermost static member - bug 22334)
SourceTypeBinding outerMostClass = currentScope.enclosingSourceType();
while (outerMostClass.isLocalType()) {
ReferenceBinding enclosing = outerMostClass.enclosingType();
if (enclosing == null || enclosing.isInterface()) break;
outerMostClass = (SourceTypeBinding) enclosing;
}
this.assertionSyntheticFieldBinding = outerMostClass.addSyntheticFieldForAssert(currentScope);
// find <clinit> and enable assertion support
TypeDeclaration typeDeclaration = outerMostClass.scope.referenceType();
AbstractMethodDeclaration[] methods = typeDeclaration.methods;
for (int i = 0, max = methods.length; i < max; i++) {
AbstractMethodDeclaration method = methods[i];
if (method.isClinit()) {
((Clinit) method)
.setAssertionSupport(
this.assertionSyntheticFieldBinding,
currentScope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_5);
break;
}
}
}
}
/*
* No need to emulate access to protected fields since not implicitly accessed
*/
public void manageSyntheticAccessIfNecessary(
BlockScope currentScope, FlowInfo flowInfo, boolean isReadAccess) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return;
// if field from parameterized type got found, use the original field at codegen time
FieldBinding codegenBinding = this.binding.original();
if (this.binding.isPrivate()) {
if ((currentScope.enclosingSourceType() != codegenBinding.declaringClass)
&& this.binding.constant() == Constant.NotAConstant) {
if (this.syntheticAccessors == null) this.syntheticAccessors = new MethodBinding[2];
this.syntheticAccessors[isReadAccess ? FieldReference.READ : FieldReference.WRITE] =
((SourceTypeBinding) codegenBinding.declaringClass)
.addSyntheticMethod(
codegenBinding, isReadAccess, false /* not super ref in remote type*/);
currentScope.problemReporter().needToEmulateFieldAccess(codegenBinding, this, isReadAccess);
return;
}
} else if (this.receiver instanceof QualifiedSuperReference) { // qualified super
// qualified super need emulation always
SourceTypeBinding destinationType =
(SourceTypeBinding) (((QualifiedSuperReference) this.receiver).currentCompatibleType);
if (this.syntheticAccessors == null) this.syntheticAccessors = new MethodBinding[2];
this.syntheticAccessors[isReadAccess ? FieldReference.READ : FieldReference.WRITE] =
destinationType.addSyntheticMethod(codegenBinding, isReadAccess, isSuperAccess());
currentScope.problemReporter().needToEmulateFieldAccess(codegenBinding, this, isReadAccess);
return;
} else if (this.binding.isProtected()) {
SourceTypeBinding enclosingSourceType;
if (((this.bits & ASTNode.DepthMASK) != 0)
&& this.binding.declaringClass.getPackage()
!= (enclosingSourceType = currentScope.enclosingSourceType()).getPackage()) {
SourceTypeBinding currentCompatibleType =
(SourceTypeBinding)
enclosingSourceType.enclosingTypeAt(
(this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT);
if (this.syntheticAccessors == null) this.syntheticAccessors = new MethodBinding[2];
this.syntheticAccessors[isReadAccess ? FieldReference.READ : FieldReference.WRITE] =
currentCompatibleType.addSyntheticMethod(codegenBinding, isReadAccess, isSuperAccess());
currentScope.problemReporter().needToEmulateFieldAccess(codegenBinding, this, isReadAccess);
return;
}
}
}
public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return;
// if method from parameterized type got found, use the original method at codegen time
MethodBinding codegenBinding = this.binding.original();
if (this.binding.isPrivate()) {
// depth is set for both implicit and explicit access (see MethodBinding#canBeSeenBy)
if (currentScope.enclosingSourceType() != codegenBinding.declaringClass) {
this.syntheticAccessor =
((SourceTypeBinding) codegenBinding.declaringClass)
.addSyntheticMethod(codegenBinding, false /* not super access there */);
currentScope.problemReporter().needToEmulateMethodAccess(codegenBinding, this);
return;
}
} else if (this.receiver instanceof QualifiedSuperReference) { // qualified super
// qualified super need emulation always
SourceTypeBinding destinationType =
(SourceTypeBinding) (((QualifiedSuperReference) this.receiver).currentCompatibleType);
this.syntheticAccessor = destinationType.addSyntheticMethod(codegenBinding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(codegenBinding, this);
return;
} else if (this.binding.isProtected()) {
SourceTypeBinding enclosingSourceType;
if (((this.bits & ASTNode.DepthMASK) != 0)
&& codegenBinding.declaringClass.getPackage()
!= (enclosingSourceType = currentScope.enclosingSourceType()).getPackage()) {
SourceTypeBinding currentCompatibleType =
(SourceTypeBinding)
enclosingSourceType.enclosingTypeAt(
(this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT);
this.syntheticAccessor =
currentCompatibleType.addSyntheticMethod(codegenBinding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(codegenBinding, this);
return;
}
}
}
/* Inner emulation consists in either recording a dependency
* link only, or performing one level of propagation.
*
* Dependency mechanism is used whenever dealing with source target
* types, since by the time we reach them, we might not yet know their
* exact need.
*/
public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return;
ReferenceBinding allocatedTypeErasure =
(ReferenceBinding) this.binding.declaringClass.erasure();
// perform some emulation work in case there is some and we are inside a local type only
if (allocatedTypeErasure.isNestedType() && currentScope.enclosingSourceType().isLocalType()) {
if (allocatedTypeErasure.isLocalType()) {
((LocalTypeBinding) allocatedTypeErasure).addInnerEmulationDependent(currentScope, false);
// request cascade of accesses
} else {
// locally propagate, since we already now the desired shape for sure
currentScope.propagateInnerEmulation(allocatedTypeErasure, false);
// request cascade of accesses
}
}
}
public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return;
// if constructor from parameterized type got found, use the original constructor at codegen
// time
MethodBinding codegenBinding = this.binding.original();
ReferenceBinding declaringClass;
if (codegenBinding.isPrivate()
&& currentScope.enclosingSourceType() != (declaringClass = codegenBinding.declaringClass)) {
// from 1.4 on, local type constructor can lose their private flag to ease emulation
if ((declaringClass.tagBits & TagBits.IsLocalType) != 0
&& currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4) {
// constructor will not be dumped as private, no emulation required thus
codegenBinding.tagBits |= TagBits.ClearPrivateModifier;
} else {
this.syntheticAccessor =
((SourceTypeBinding) declaringClass)
.addSyntheticMethod(codegenBinding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(codegenBinding, this);
}
}
}
public TypeBinding resolveType(BlockScope scope) {
// added for code assist...cannot occur with 'normal' code
if (this.anonymousType == null && this.enclosingInstance == null) {
return super.resolveType(scope);
}
// Propagate the type checking to the arguments, and checks if the constructor is defined.
// ClassInstanceCreationExpression ::= Primary '.' 'new' SimpleName '(' ArgumentListopt ')'
// ClassBodyopt
// ClassInstanceCreationExpression ::= Name '.' 'new' SimpleName '(' ArgumentListopt ')'
// ClassBodyopt
this.constant = Constant.NotAConstant;
TypeBinding enclosingInstanceType = null;
ReferenceBinding enclosingInstanceReference = null;
TypeBinding receiverType = null;
boolean hasError = false;
boolean enclosingInstanceContainsCast = false;
boolean argsContainCast = false;
if (this.enclosingInstance != null) {
if (this.enclosingInstance instanceof CastExpression) {
this.enclosingInstance.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on
enclosingInstanceContainsCast = true;
}
if ((enclosingInstanceType = this.enclosingInstance.resolveType(scope)) == null) {
hasError = true;
} else if (enclosingInstanceType.isBaseType() || enclosingInstanceType.isArrayType()) {
scope
.problemReporter()
.illegalPrimitiveOrArrayTypeForEnclosingInstance(
enclosingInstanceType, this.enclosingInstance);
hasError = true;
} else if (this.type instanceof QualifiedTypeReference) {
scope
.problemReporter()
.illegalUsageOfQualifiedTypeReference((QualifiedTypeReference) this.type);
hasError = true;
} else if (!(enclosingInstanceReference = (ReferenceBinding) enclosingInstanceType)
.canBeSeenBy(scope)) {
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=317212
enclosingInstanceType =
new ProblemReferenceBinding(
enclosingInstanceReference.compoundName,
enclosingInstanceReference,
ProblemReasons.NotVisible);
scope.problemReporter().invalidType(this.enclosingInstance, enclosingInstanceType);
hasError = true;
} else {
receiverType =
((SingleTypeReference) this.type)
.resolveTypeEnclosing(scope, (ReferenceBinding) enclosingInstanceType);
if (receiverType != null && enclosingInstanceContainsCast) {
CastExpression.checkNeedForEnclosingInstanceCast(
scope, this.enclosingInstance, enclosingInstanceType, receiverType);
}
}
} else {
if (this.type == null) {
// initialization of an enum constant
receiverType = scope.enclosingSourceType();
} else {
receiverType = this.type.resolveType(scope, true /* check bounds*/);
checkParameterizedAllocation:
{
if (receiverType == null || !receiverType.isValidBinding())
break checkParameterizedAllocation;
if (this.type
instanceof
ParameterizedQualifiedTypeReference) { // disallow new X<String>.Y<Integer>()
ReferenceBinding currentType = (ReferenceBinding) receiverType;
do {
// isStatic() is answering true for toplevel types
if ((currentType.modifiers & ClassFileConstants.AccStatic) != 0)
break checkParameterizedAllocation;
if (currentType.isRawType()) break checkParameterizedAllocation;
} while ((currentType = currentType.enclosingType()) != null);
ParameterizedQualifiedTypeReference qRef =
(ParameterizedQualifiedTypeReference) this.type;
for (int i = qRef.typeArguments.length - 2; i >= 0; i--) {
if (qRef.typeArguments[i] != null) {
scope
.problemReporter()
.illegalQualifiedParameterizedTypeAllocation(this.type, receiverType);
break;
}
}
}
}
}
}
if (receiverType == null || !receiverType.isValidBinding()) {
hasError = true;
}
// resolve type arguments (for generic constructor call)
final boolean isDiamond = this.type != null && (this.type.bits & ASTNode.IsDiamond) != 0;
if (this.typeArguments != null) {
int length = this.typeArguments.length;
boolean argHasError = scope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_5;
this.genericTypeArguments = new TypeBinding[length];
for (int i = 0; i < length; i++) {
TypeReference typeReference = this.typeArguments[i];
if ((this.genericTypeArguments[i] =
typeReference.resolveType(scope, true /* check bounds*/))
== null) {
argHasError = true;
}
if (argHasError && typeReference instanceof Wildcard) {
scope.problemReporter().illegalUsageOfWildcard(typeReference);
}
}
if (isDiamond) {
scope.problemReporter().diamondNotWithExplicitTypeArguments(this.typeArguments);
return null;
}
if (argHasError) {
if (this.arguments != null) { // still attempt to resolve arguments
for (int i = 0, max = this.arguments.length; i < max; i++) {
this.arguments[i].resolveType(scope);
}
}
return null;
}
}
// will check for null after args are resolved
TypeBinding[] argumentTypes = Binding.NO_PARAMETERS;
if (this.arguments != null) {
int length = this.arguments.length;
argumentTypes = new TypeBinding[length];
for (int i = 0; i < length; i++) {
Expression argument = this.arguments[i];
if (argument instanceof CastExpression) {
argument.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on
argsContainCast = true;
}
if ((argumentTypes[i] = argument.resolveType(scope)) == null) {
hasError = true;
}
}
}
// limit of fault-tolerance
if (hasError) {
/* https://bugs.eclipse.org/bugs/show_bug.cgi?id=345359, if arguments have errors, completely bail out in the <> case.
No meaningful type resolution is possible since inference of the elided types is fully tied to argument types. Do
not return the partially resolved type.
*/
if (isDiamond) {
return null; // not the partially cooked this.resolvedType
}
if (receiverType instanceof ReferenceBinding) {
ReferenceBinding referenceReceiver = (ReferenceBinding) receiverType;
if (receiverType.isValidBinding()) {
// record a best guess, for clients who need hint about possible contructor match
int length = this.arguments == null ? 0 : this.arguments.length;
TypeBinding[] pseudoArgs = new TypeBinding[length];
for (int i = length; --i >= 0; ) {
pseudoArgs[i] =
argumentTypes[i] == null
? TypeBinding.NULL
: argumentTypes[i]; // replace args with errors with null type
}
this.binding = scope.findMethod(referenceReceiver, TypeConstants.INIT, pseudoArgs, this);
if (this.binding != null && !this.binding.isValidBinding()) {
MethodBinding closestMatch = ((ProblemMethodBinding) this.binding).closestMatch;
// record the closest match, for clients who may still need hint about possible method
// match
if (closestMatch != null) {
if (closestMatch.original().typeVariables
!= Binding.NO_TYPE_VARIABLES) { // generic method
// shouldn't return generic method outside its context, rather convert it to raw
// method (175409)
closestMatch =
scope
.environment()
.createParameterizedGenericMethod(
closestMatch.original(), (RawTypeBinding) null);
}
this.binding = closestMatch;
MethodBinding closestMatchOriginal = closestMatch.original();
if (closestMatchOriginal.isOrEnclosedByPrivateType()
&& !scope.isDefinedInMethod(closestMatchOriginal)) {
// ignore cases where method is used from within inside itself (e.g. direct
// recursions)
closestMatchOriginal.modifiers |= ExtraCompilerModifiers.AccLocallyUsed;
}
}
}
}
if (this.anonymousType != null) {
// insert anonymous type in scope (see
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=210070)
scope.addAnonymousType(this.anonymousType, referenceReceiver);
this.anonymousType.resolve(scope);
return this.resolvedType = this.anonymousType.binding;
}
}
return this.resolvedType = receiverType;
}
if (this.anonymousType == null) {
// qualified allocation with no anonymous type
if (!receiverType.canBeInstantiated()) {
scope.problemReporter().cannotInstantiate(this.type, receiverType);
return this.resolvedType = receiverType;
}
if (isDiamond) {
TypeBinding[] inferredTypes =
inferElidedTypes(
((ParameterizedTypeBinding) receiverType).genericType(),
receiverType.enclosingType(),
argumentTypes,
scope);
if (inferredTypes == null) {
scope.problemReporter().cannotInferElidedTypes(this);
return this.resolvedType = null;
}
receiverType =
this.type.resolvedType =
scope
.environment()
.createParameterizedType(
((ParameterizedTypeBinding) receiverType).genericType(),
inferredTypes,
((ParameterizedTypeBinding) receiverType).enclosingType());
}
ReferenceBinding allocationType = (ReferenceBinding) receiverType;
if ((this.binding = scope.getConstructor(allocationType, argumentTypes, this))
.isValidBinding()) {
if (isMethodUseDeprecated(this.binding, scope, true)) {
scope.problemReporter().deprecatedMethod(this.binding, this);
}
if (checkInvocationArguments(
scope,
null,
allocationType,
this.binding,
this.arguments,
argumentTypes,
argsContainCast,
this)) {
this.bits |= ASTNode.Unchecked;
}
if (this.typeArguments != null
&& this.binding.original().typeVariables == Binding.NO_TYPE_VARIABLES) {
scope
.problemReporter()
.unnecessaryTypeArgumentsForMethodInvocation(
this.binding, this.genericTypeArguments, this.typeArguments);
}
} else {
if (this.binding.declaringClass == null) {
this.binding.declaringClass = allocationType;
}
if (this.type != null && !this.type.resolvedType.isValidBinding()) {
// problem already got signaled on type reference, do not report secondary problem
return null;
}
scope.problemReporter().invalidConstructor(this, this.binding);
return this.resolvedType = receiverType;
}
if ((this.binding.tagBits & TagBits.HasMissingType) != 0) {
scope.problemReporter().missingTypeInConstructor(this, this.binding);
}
if (!isDiamond && receiverType.isParameterizedTypeWithActualArguments()) {
checkTypeArgumentRedundancy(
(ParameterizedTypeBinding) receiverType,
receiverType.enclosingType(),
argumentTypes,
scope);
}
// The enclosing instance must be compatible with the innermost enclosing type
ReferenceBinding expectedType = this.binding.declaringClass.enclosingType();
if (expectedType
!= enclosingInstanceType) // must call before computeConversion() and typeMismatchError()
scope.compilationUnitScope().recordTypeConversion(expectedType, enclosingInstanceType);
if (enclosingInstanceType.isCompatibleWith(expectedType)
|| scope.isBoxingCompatibleWith(enclosingInstanceType, expectedType)) {
this.enclosingInstance.computeConversion(scope, expectedType, enclosingInstanceType);
return this.resolvedType = receiverType;
}
scope
.problemReporter()
.typeMismatchError(enclosingInstanceType, expectedType, this.enclosingInstance, null);
return this.resolvedType = receiverType;
} else {
if (isDiamond) {
scope.problemReporter().diamondNotWithAnoymousClasses(this.type);
return null;
}
}
ReferenceBinding superType = (ReferenceBinding) receiverType;
if (superType.isTypeVariable()) {
superType =
new ProblemReferenceBinding(
new char[][] {superType.sourceName()},
superType,
ProblemReasons.IllegalSuperTypeVariable);
scope.problemReporter().invalidType(this, superType);
return null;
} else if (this.type != null && superType.isEnum()) { // tolerate enum constant body
scope.problemReporter().cannotInstantiate(this.type, superType);
return this.resolvedType = superType;
}
// anonymous type scenario
// an anonymous class inherits from java.lang.Object when declared "after" an interface
ReferenceBinding anonymousSuperclass =
superType.isInterface() ? scope.getJavaLangObject() : superType;
// insert anonymous type in scope
scope.addAnonymousType(this.anonymousType, superType);
this.anonymousType.resolve(scope);
// find anonymous super constructor
this.resolvedType = this.anonymousType.binding; // 1.2 change
if ((this.resolvedType.tagBits & TagBits.HierarchyHasProblems) != 0) {
return null; // stop secondary errors
}
MethodBinding inheritedBinding = scope.getConstructor(anonymousSuperclass, argumentTypes, this);
if (!inheritedBinding.isValidBinding()) {
if (inheritedBinding.declaringClass == null) {
inheritedBinding.declaringClass = anonymousSuperclass;
}
if (this.type != null && !this.type.resolvedType.isValidBinding()) {
// problem already got signaled on type reference, do not report secondary problem
return null;
}
scope.problemReporter().invalidConstructor(this, inheritedBinding);
return this.resolvedType;
}
if ((inheritedBinding.tagBits & TagBits.HasMissingType) != 0) {
scope.problemReporter().missingTypeInConstructor(this, inheritedBinding);
}
if (this.enclosingInstance != null) {
ReferenceBinding targetEnclosing = inheritedBinding.declaringClass.enclosingType();
if (targetEnclosing == null) {
scope
.problemReporter()
.unnecessaryEnclosingInstanceSpecification(this.enclosingInstance, superType);
return this.resolvedType;
} else if (!enclosingInstanceType.isCompatibleWith(targetEnclosing)
&& !scope.isBoxingCompatibleWith(enclosingInstanceType, targetEnclosing)) {
scope
.problemReporter()
.typeMismatchError(
enclosingInstanceType, targetEnclosing, this.enclosingInstance, null);
return this.resolvedType;
}
this.enclosingInstance.computeConversion(scope, targetEnclosing, enclosingInstanceType);
}
if (this.arguments != null) {
if (checkInvocationArguments(
scope,
null,
anonymousSuperclass,
inheritedBinding,
this.arguments,
argumentTypes,
argsContainCast,
this)) {
this.bits |= ASTNode.Unchecked;
}
}
if (this.typeArguments != null
&& inheritedBinding.original().typeVariables == Binding.NO_TYPE_VARIABLES) {
scope
.problemReporter()
.unnecessaryTypeArgumentsForMethodInvocation(
inheritedBinding, this.genericTypeArguments, this.typeArguments);
}
// Update the anonymous inner class : superclass, interface
this.binding =
this.anonymousType.createDefaultConstructorWithBinding(
inheritedBinding,
(this.bits & ASTNode.Unchecked) != 0 && this.genericTypeArguments == null);
return this.resolvedType;
}
public TypeBinding resolveType(BlockScope scope) {
// Answer the signature type of the field.
// constants are propaged when the field is final
// and initialized with a (compile time) constant
// always ignore receiver cast, since may affect constant pool reference
boolean receiverCast = false;
if (this.receiver instanceof CastExpression) {
this.receiver.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on
receiverCast = true;
}
this.actualReceiverType = this.receiver.resolveType(scope);
if (this.actualReceiverType == null) {
this.constant = Constant.NotAConstant;
return null;
}
if (receiverCast) {
// due to change of declaring class with receiver type, only identity cast should be notified
if (((CastExpression) this.receiver).expression.resolvedType == this.actualReceiverType) {
scope.problemReporter().unnecessaryCast((CastExpression) this.receiver);
}
}
// the case receiverType.isArrayType and token = 'length' is handled by the scope API
FieldBinding fieldBinding =
this.binding = scope.getField(this.actualReceiverType, this.token, this);
if (!fieldBinding.isValidBinding()) {
this.constant = Constant.NotAConstant;
if (this.receiver.resolvedType instanceof ProblemReferenceBinding) {
// problem already got signaled on receiver, do not report secondary problem
return null;
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=245007 avoid secondary errors in case of
// missing super type for anonymous classes ...
ReferenceBinding declaringClass = fieldBinding.declaringClass;
boolean avoidSecondary =
declaringClass != null
&& declaringClass.isAnonymousType()
&& declaringClass.superclass() instanceof MissingTypeBinding;
if (!avoidSecondary) {
scope.problemReporter().invalidField(this, this.actualReceiverType);
}
if (fieldBinding instanceof ProblemFieldBinding) {
ProblemFieldBinding problemFieldBinding = (ProblemFieldBinding) fieldBinding;
FieldBinding closestMatch = problemFieldBinding.closestMatch;
switch (problemFieldBinding.problemId()) {
case ProblemReasons.InheritedNameHidesEnclosingName:
case ProblemReasons.NotVisible:
case ProblemReasons.NonStaticReferenceInConstructorInvocation:
case ProblemReasons.NonStaticReferenceInStaticContext:
if (closestMatch != null) {
fieldBinding = closestMatch;
}
}
}
if (!fieldBinding.isValidBinding()) {
return null;
}
}
// handle indirect inheritance thru variable secondary bound
// receiver may receive generic cast, as part of implicit conversion
TypeBinding oldReceiverType = this.actualReceiverType;
this.actualReceiverType =
this.actualReceiverType.getErasureCompatibleType(fieldBinding.declaringClass);
this.receiver.computeConversion(scope, this.actualReceiverType, this.actualReceiverType);
if (this.actualReceiverType != oldReceiverType
&& this.receiver.postConversionType(scope)
!= this
.actualReceiverType) { // record need for explicit cast at codegen since receiver
// could not handle it
this.bits |= NeedReceiverGenericCast;
}
if (isFieldUseDeprecated(fieldBinding, scope, this.bits)) {
scope.problemReporter().deprecatedField(fieldBinding, this);
}
boolean isImplicitThisRcv = this.receiver.isImplicitThis();
this.constant = isImplicitThisRcv ? fieldBinding.constant() : Constant.NotAConstant;
if (fieldBinding.isStatic()) {
// static field accessed through receiver? legal but unoptimal (optional warning)
if (!(isImplicitThisRcv
|| (this.receiver instanceof NameReference
&& (((NameReference) this.receiver).bits & Binding.TYPE) != 0))) {
scope.problemReporter().nonStaticAccessToStaticField(this, fieldBinding);
}
ReferenceBinding declaringClass = this.binding.declaringClass;
if (!isImplicitThisRcv
&& declaringClass != this.actualReceiverType
&& declaringClass.canBeSeenBy(scope)) {
scope.problemReporter().indirectAccessToStaticField(this, fieldBinding);
}
// check if accessing enum static field in initializer
if (declaringClass.isEnum()) {
MethodScope methodScope = scope.methodScope();
SourceTypeBinding sourceType = scope.enclosingSourceType();
if (this.constant == Constant.NotAConstant
&& !methodScope.isStatic
&& (sourceType == declaringClass
|| sourceType.superclass == declaringClass) // enum constant body
&& methodScope.isInsideInitializerOrConstructor()) {
scope.problemReporter().enumStaticFieldUsedDuringInitialization(this.binding, this);
}
}
}
TypeBinding fieldType = fieldBinding.type;
if (fieldType != null) {
if ((this.bits & ASTNode.IsStrictlyAssigned) == 0) {
fieldType =
fieldType.capture(scope, this.sourceEnd); // perform capture conversion if read access
}
this.resolvedType = fieldType;
if ((fieldType.tagBits & TagBits.HasMissingType) != 0) {
scope.problemReporter().invalidType(this, fieldType);
return null;
}
}
return fieldType;
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
MethodBinding codegenBinding = this.binding.original();
if (codegenBinding.canBeSeenBy(this.actualReceiverType, this, currentScope)) {
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// outer method can be reached through emulation
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & DepthMASK) >> DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
if (path == null) {
// emulation was not possible (should not happen per construction)
currentScope.problemReporter().needImplementation(this);
} else {
codeStream.generateOuterAccess(path, this, targetType, currentScope);
}
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
// actual message invocation
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else {
if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(
Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
}
} else {
codeStream.generateEmulationForMethod(currentScope, codegenBinding);
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// not supported yet
currentScope.problemReporter().needImplementation(this);
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
if (isStatic) {
// we need an object on the stack which is ignored for the method invocation
codeStream.aconst_null();
}
// generate arguments
if (this.arguments != null) {
int argsLength = this.arguments.length;
codeStream.generateInlinedValue(argsLength);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
codeStream.dup();
for (int i = 0; i < argsLength; i++) {
codeStream.generateInlinedValue(i);
this.arguments[i].generateCode(currentScope, codeStream, true);
TypeBinding parameterBinding = codegenBinding.parameters[i];
if (parameterBinding.isBaseType() && parameterBinding != TypeBinding.NULL) {
codeStream.generateBoxingConversion(codegenBinding.parameters[i].id);
}
codeStream.aastore();
if (i < argsLength - 1) {
codeStream.dup();
}
}
} else {
codeStream.generateInlinedValue(0);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
}
codeStream.invokeJavaLangReflectMethodInvoke();
// convert the return value to the appropriate type for primitive types
if (codegenBinding.returnType.isBaseType()) {
int typeID = codegenBinding.returnType.id;
if (typeID == T_void) {
// remove the null from the stack
codeStream.pop();
}
codeStream.checkcast(typeID);
codeStream.getBaseTypeValue(typeID);
} else {
codeStream.checkcast(codegenBinding.returnType);
}
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
public TypeBinding resolveType(BlockScope scope) {
// Answer the signature return type
// Base type promotion
this.constant = Constant.NotAConstant;
boolean receiverCast = false, argsContainCast = false;
if (this.receiver instanceof CastExpression) {
this.receiver.bits |= DisableUnnecessaryCastCheck; // will check later on
receiverCast = true;
}
this.actualReceiverType = this.receiver.resolveType(scope);
if (receiverCast && this.actualReceiverType != null) {
// due to change of declaring class with receiver type, only identity cast should be notified
if (((CastExpression) this.receiver).expression.resolvedType == this.actualReceiverType) {
scope.problemReporter().unnecessaryCast((CastExpression) this.receiver);
}
}
// resolve type arguments (for generic constructor call)
if (this.typeArguments != null) {
int length = this.typeArguments.length;
boolean argHasError = false; // typeChecks all arguments
this.genericTypeArguments = new TypeBinding[length];
for (int i = 0; i < length; i++) {
if ((this.genericTypeArguments[i] =
this.typeArguments[i].resolveType(scope, true /* check bounds*/))
== null) {
argHasError = true;
}
}
if (argHasError) {
return null;
}
}
// will check for null after args are resolved
TypeBinding[] argumentTypes = Binding.NO_PARAMETERS;
if (this.arguments != null) {
boolean argHasError = false; // typeChecks all arguments
int length = this.arguments.length;
argumentTypes = new TypeBinding[length];
for (int i = 0; i < length; i++) {
Expression argument = this.arguments[i];
if (argument instanceof CastExpression) {
argument.bits |= DisableUnnecessaryCastCheck; // will check later on
argsContainCast = true;
}
if ((argumentTypes[i] = this.arguments[i].resolveType(scope)) == null) argHasError = true;
}
if (argHasError) {
if (this.actualReceiverType instanceof ReferenceBinding) {
// record any selector match, for clients who may still need hint about possible method
// match
this.binding =
scope.findMethod(
(ReferenceBinding) this.actualReceiverType,
this.selector,
new TypeBinding[] {},
this);
}
return null;
}
}
if (this.actualReceiverType == null) {
return null;
}
// base type cannot receive any message
if (this.actualReceiverType.isBaseType()) {
scope.problemReporter().errorNoMethodFor(this, this.actualReceiverType, argumentTypes);
return null;
}
this.binding =
this.receiver.isImplicitThis()
? scope.getImplicitMethod(this.selector, argumentTypes, this)
: scope.getMethod(this.actualReceiverType, this.selector, argumentTypes, this);
if (!this.binding.isValidBinding()) {
if (this.binding instanceof ProblemMethodBinding
&& ((ProblemMethodBinding) this.binding).problemId() == ProblemReasons.NotVisible) {
if (this.evaluationContext.declaringTypeName != null) {
this.delegateThis =
scope.getField(scope.enclosingSourceType(), EvaluationConstants.DELEGATE_THIS, this);
if (this.delegateThis
== null) { // if not found then internal error, field should have been found
this.constant = Constant.NotAConstant;
scope.problemReporter().invalidMethod(this, this.binding);
return null;
}
} else {
this.constant = Constant.NotAConstant;
scope.problemReporter().invalidMethod(this, this.binding);
return null;
}
CodeSnippetScope localScope = new CodeSnippetScope(scope);
MethodBinding privateBinding =
this.receiver instanceof CodeSnippetThisReference
&& ((CodeSnippetThisReference) this.receiver).isImplicit
? localScope.getImplicitMethod(
(ReferenceBinding) this.delegateThis.type, this.selector, argumentTypes, this)
: localScope.getMethod(this.delegateThis.type, this.selector, argumentTypes, this);
if (!privateBinding.isValidBinding()) {
if (this.binding.declaringClass == null) {
if (this.actualReceiverType instanceof ReferenceBinding) {
this.binding.declaringClass = (ReferenceBinding) this.actualReceiverType;
} else { // really bad error ....
scope
.problemReporter()
.errorNoMethodFor(this, this.actualReceiverType, argumentTypes);
return null;
}
}
scope.problemReporter().invalidMethod(this, this.binding);
return null;
} else {
this.binding = privateBinding;
}
} else {
if (this.binding.declaringClass == null) {
if (this.actualReceiverType instanceof ReferenceBinding) {
this.binding.declaringClass = (ReferenceBinding) this.actualReceiverType;
} else { // really bad error ....
scope.problemReporter().errorNoMethodFor(this, this.actualReceiverType, argumentTypes);
return null;
}
}
scope.problemReporter().invalidMethod(this, this.binding);
return null;
}
}
if (!this.binding.isStatic()) {
// the "receiver" must not be a type, in other words, a NameReference that the TC has bound to
// a Type
if (this.receiver instanceof NameReference
&& (((NameReference) this.receiver).bits & Binding.TYPE) != 0) {
scope.problemReporter().mustUseAStaticMethod(this, this.binding);
} else {
// handle indirect inheritance thru variable secondary bound
// receiver may receive generic cast, as part of implicit conversion
TypeBinding oldReceiverType = this.actualReceiverType;
this.actualReceiverType =
this.actualReceiverType.getErasureCompatibleType(this.binding.declaringClass);
this.receiver.computeConversion(scope, this.actualReceiverType, this.actualReceiverType);
if (this.actualReceiverType != oldReceiverType
&& this.receiver.postConversionType(scope)
!= this
.actualReceiverType) { // record need for explicit cast at codegen since
// receiver could not handle it
this.bits |= NeedReceiverGenericCast;
}
}
}
if (checkInvocationArguments(
scope,
this.receiver,
this.actualReceiverType,
this.binding,
this.arguments,
argumentTypes,
argsContainCast,
this)) {
this.bits |= ASTNode.Unchecked;
}
// -------message send that are known to fail at compile time-----------
if (this.binding.isAbstract()) {
if (this.receiver.isSuper()) {
scope.problemReporter().cannotDireclyInvokeAbstractMethod(this, this.binding);
}
// abstract private methods cannot occur nor abstract static............
}
if (isMethodUseDeprecated(this.binding, scope, true))
scope.problemReporter().deprecatedMethod(this.binding, this);
// from 1.5 compliance on, array#clone() returns the array type (but binding still shows Object)
if (this.actualReceiverType.isArrayType()
&& this.binding.parameters == Binding.NO_PARAMETERS
&& scope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_5
&& CharOperation.equals(this.binding.selector, CLONE)) {
this.resolvedType = this.actualReceiverType;
} else {
TypeBinding returnType = this.binding.returnType;
if (returnType != null) {
if ((this.bits & ASTNode.Unchecked) != 0 && this.genericTypeArguments == null) {
returnType = scope.environment().convertToRawType(returnType.erasure(), true);
}
returnType = returnType.capture(scope, this.sourceEnd);
}
this.resolvedType = returnType;
}
return this.resolvedType;
}
public TypeBinding resolveType(BlockScope scope) {
this.constant = Constant.NotAConstant;
if ((this.targetType = this.type.resolveType(scope, true /* check bounds*/)) == null)
return null;
/* https://bugs.eclipse.org/bugs/show_bug.cgi?id=320463
https://bugs.eclipse.org/bugs/show_bug.cgi?id=312076
JLS3 15.8.2 forbids the type named in the class literal expression from being a parameterized type.
And the grammar in 18.1 disallows (where X and Y are some concrete types) constructs of the form
Outer<X>.class, Outer<X>.Inner.class, Outer.Inner<X>.class, Outer<X>.Inner<Y>.class etc.
Corollary wise, we should resolve the type of the class literal expression to be a raw type as
class literals exist only for the raw underlying type.
*/
LookupEnvironment environment = scope.environment();
this.targetType =
environment.convertToRawType(
this.targetType, true /* force conversion of enclosing types*/);
if (this.targetType.isArrayType()) {
ArrayBinding arrayBinding = (ArrayBinding) this.targetType;
TypeBinding leafComponentType = arrayBinding.leafComponentType;
if (leafComponentType == TypeBinding.VOID) {
scope.problemReporter().cannotAllocateVoidArray(this);
return null;
} else if (leafComponentType.isTypeVariable()) {
scope
.problemReporter()
.illegalClassLiteralForTypeVariable((TypeVariableBinding) leafComponentType, this);
}
} else if (this.targetType.isTypeVariable()) {
scope
.problemReporter()
.illegalClassLiteralForTypeVariable((TypeVariableBinding) this.targetType, this);
}
// {ObjectTeams: do we need a RoleClassLiteralAccess?
if (this.targetType instanceof ReferenceBinding) {
ReferenceBinding targetRef = (ReferenceBinding) this.targetType;
if (targetRef.isRole()) {
if (this.verbatim) {
this.targetType =
RoleTypeCreator.maybeWrapUnqualifiedRoleType(scope, this.targetType, this);
} else {
SourceTypeBinding site = scope.enclosingSourceType();
if (scope.methodScope().isStatic // role class literal needs team instance
&& !site.isRole() // static role method are OK.
&& !RoleTypeBinding.isRoleWithExplicitAnchor(this.targetType)) // t.R.class?
{
scope.problemReporter().roleClassLiteralLacksTeamInstance(this, targetRef);
return null;
}
ReferenceBinding teamBinding;
if (RoleTypeBinding.isRoleWithExplicitAnchor(targetRef))
teamBinding = targetRef.enclosingType();
else teamBinding = TeamModel.findEnclosingTeamContainingRole(site, targetRef);
if (teamBinding == null)
scope.problemReporter().externalizedRoleClassLiteral(this, targetRef);
else {
TypeBinding methodType =
RoleClassLiteralAccess.ensureGetClassMethod(
teamBinding.getTeamModel(),
targetRef.roleModel); // not affected by visibility check (for resilience)
this.roleClassLiteralAccess = new RoleClassLiteralAccess(this, methodType);
this.resolvedType = this.roleClassLiteralAccess.resolveType(scope);
}
return this.resolvedType;
}
}
}
// SH}
ReferenceBinding classType = scope.getJavaLangClass();
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=328689
if (scope.compilerOptions().sourceLevel >= ClassFileConstants.JDK1_5) {
// Integer.class --> Class<Integer>, perform boxing of base types (int.class -->
// Class<Integer>)
TypeBinding boxedType = null;
if (this.targetType.id == T_void) {
boxedType = environment.getResolvedType(JAVA_LANG_VOID, scope);
} else {
boxedType = scope.boxing(this.targetType);
}
if (environment.usesNullTypeAnnotations())
boxedType =
environment.createAnnotatedType(
boxedType, new AnnotationBinding[] {environment.getNonNullAnnotation()});
this.resolvedType =
environment.createParameterizedType(
classType, new TypeBinding[] {boxedType}, null /*not a member*/);
} else {
this.resolvedType = classType;
}
return this.resolvedType;
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
// generate receiver/enclosing instance access
MethodBinding codegenBinding =
this.binding instanceof PolymorphicMethodBinding ? this.binding : this.binding.original();
boolean isStatic = codegenBinding.isStatic();
if (isStatic) {
this.receiver.generateCode(currentScope, codeStream, false);
} else if ((this.bits & ASTNode.DepthMASK) != 0
&& this.receiver.isImplicitThis()) { // outer access ?
// outer method can be reached through emulation if implicit access
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
codeStream.generateOuterAccess(path, this, targetType, currentScope);
} else {
this.receiver.generateCode(currentScope, codeStream, true);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
pc = codeStream.position;
// actual message invocation
if (this.syntheticAccessor == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic, this.syntheticAccessor, null /* default declaringClass */);
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
