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;
}
}
}
}
/* 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 TypeBinding resolveType(BlockScope scope) {
// Propagate the type checking to the arguments, and check if the constructor is defined.
this.constant = Constant.NotAConstant;
if (this.type == null) {
// initialization of an enum constant
this.resolvedType = scope.enclosingReceiverType();
} else {
this.resolvedType = this.type.resolveType(scope, true /* check bounds*/);
checkParameterizedAllocation:
{
if (this.type
instanceof ParameterizedQualifiedTypeReference) { // disallow new X<String>.Y<Integer>()
ReferenceBinding currentType = (ReferenceBinding) this.resolvedType;
if (currentType == null) return currentType;
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, this.resolvedType);
break;
}
}
}
}
}
// will check for null after args are resolved
final boolean isDiamond = this.type != null && (this.type.bits & ASTNode.IsDiamond) != 0;
// resolve type arguments (for generic constructor call)
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;
}
}
// buffering the arguments' types
boolean argsContainCast = false;
TypeBinding[] argumentTypes = Binding.NO_PARAMETERS;
if (this.arguments != null) {
boolean argHasError = false;
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] = argument.resolveType(scope)) == null) {
argHasError = true;
}
}
if (argHasError) {
/* 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 (this.resolvedType instanceof ReferenceBinding) {
// record a best guess, for clients who need hint about possible constructor match
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(
(ReferenceBinding) this.resolvedType, 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;
}
}
}
}
return this.resolvedType;
}
}
if (this.resolvedType == null || !this.resolvedType.isValidBinding()) {
return null;
}
// null type denotes fake allocation for enum constant inits
if (this.type != null && !this.resolvedType.canBeInstantiated()) {
scope.problemReporter().cannotInstantiate(this.type, this.resolvedType);
return this.resolvedType;
}
if (isDiamond) {
TypeBinding[] inferredTypes =
inferElidedTypes(
((ParameterizedTypeBinding) this.resolvedType).genericType(),
null,
argumentTypes,
scope);
if (inferredTypes == null) {
scope.problemReporter().cannotInferElidedTypes(this);
return this.resolvedType = null;
}
this.resolvedType =
this.type.resolvedType =
scope
.environment()
.createParameterizedType(
((ParameterizedTypeBinding) this.resolvedType).genericType(),
inferredTypes,
((ParameterizedTypeBinding) this.resolvedType).enclosingType());
}
ReferenceBinding allocationType = (ReferenceBinding) this.resolvedType;
if (!(this.binding = scope.getConstructor(allocationType, argumentTypes, this))
.isValidBinding()) {
if (this.binding.declaringClass == null) {
this.binding.declaringClass = allocationType;
}
if (this.type != null && !this.type.resolvedType.isValidBinding()) {
return null;
}
scope.problemReporter().invalidConstructor(this, this.binding);
return this.resolvedType;
}
if ((this.binding.tagBits & TagBits.HasMissingType) != 0) {
scope.problemReporter().missingTypeInConstructor(this, this.binding);
}
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);
}
if (!isDiamond && this.resolvedType.isParameterizedTypeWithActualArguments()) {
checkTypeArgumentRedundancy(
(ParameterizedTypeBinding) this.resolvedType, null, argumentTypes, scope);
}
final CompilerOptions compilerOptions = scope.compilerOptions();
if (compilerOptions.isAnnotationBasedNullAnalysisEnabled
&& (this.binding.tagBits & TagBits.IsNullnessKnown) == 0) {
new ImplicitNullAnnotationVerifier(
scope.environment(), compilerOptions.inheritNullAnnotations)
.checkImplicitNullAnnotations(this.binding, null /*srcMethod*/, false, scope);
}
return allocationType;
}
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
if (!valueRequired) currentScope.problemReporter().unusedObjectAllocation(this);
int pc = codeStream.position;
MethodBinding codegenBinding = this.binding.original();
ReferenceBinding allocatedType = codegenBinding.declaringClass;
codeStream.new_(allocatedType);
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
if (valueRequired || isUnboxing) {
codeStream.dup();
}
// better highlight for allocation: display the type individually
if (this.type != null) { // null for enum constant body
codeStream.recordPositionsFrom(pc, this.type.sourceStart);
} else {
// push enum constant name and ordinal
codeStream.ldc(String.valueOf(this.enumConstant.name));
codeStream.generateInlinedValue(this.enumConstant.binding.id);
}
// handling innerclass instance allocation - enclosing instance arguments
if (allocatedType.isNestedType()) {
codeStream.generateSyntheticEnclosingInstanceValues(
currentScope, allocatedType, enclosingInstance(), this);
}
// generate the arguments for constructor
generateArguments(this.binding, this.arguments, currentScope, codeStream);
// handling innerclass instance allocation - outer local arguments
if (allocatedType.isNestedType()) {
codeStream.generateSyntheticOuterArgumentValues(currentScope, allocatedType, this);
}
// invoke constructor
if (this.syntheticAccessor == null) {
codeStream.invoke(
Opcodes.OPC_invokespecial, codegenBinding, null /* default declaringClass */);
} else {
// synthetic accessor got some extra arguments appended to its signature, which need values
for (int i = 0,
max = this.syntheticAccessor.parameters.length - codegenBinding.parameters.length;
i < max;
i++) {
codeStream.aconst_null();
}
codeStream.invoke(
Opcodes.OPC_invokespecial, this.syntheticAccessor, null /* default declaringClass */);
}
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
} else if (isUnboxing) {
// conversion only generated if unboxing
codeStream.generateImplicitConversion(this.implicitConversion);
switch (postConversionType(currentScope).id) {
case T_long:
case T_double:
codeStream.pop2();
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
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;
}