public TypeBinding resolveType(BlockScope scope) {
// field and/or local are done before type lookups
// the only available value for the restrictiveFlag BEFORE
// the TC is Flag_Type Flag_LocalField and Flag_TypeLocalField
this.actualReceiverType = scope.enclosingReceiverType();
this.constant = Constant.NotAConstant;
if ((
/*this.codegenBinding =*/ this.binding =
scope.getBinding(
this.tokens, this.bits & ASTNode.RestrictiveFlagMASK, this, true /*resolve*/))
.isValidBinding()) {
switch (this.bits & ASTNode.RestrictiveFlagMASK) {
case Binding.VARIABLE: // ============only variable===========
case Binding.TYPE | Binding.VARIABLE:
if (this.binding instanceof LocalVariableBinding) {
this.bits &= ~ASTNode.RestrictiveFlagMASK; // clear bits
this.bits |= Binding.LOCAL;
return this.resolvedType = getOtherFieldBindings(scope);
}
if (this.binding instanceof FieldBinding) {
FieldBinding fieldBinding = (FieldBinding) this.binding;
MethodScope methodScope = scope.methodScope();
// check for forward references
if (this.indexOfFirstFieldBinding == 1
&& methodScope.enclosingSourceType() == fieldBinding.original().declaringClass
&& methodScope.lastVisibleFieldID >= 0
&& fieldBinding.id >= methodScope.lastVisibleFieldID
&& (!fieldBinding.isStatic() || methodScope.isStatic)) {
scope.problemReporter().forwardReference(this, 0, methodScope.enclosingSourceType());
}
this.bits &= ~ASTNode.RestrictiveFlagMASK; // clear bits
this.bits |= Binding.FIELD;
// // check for deprecated receiver type
// // deprecation check for receiver type if not first token
// if (indexOfFirstFieldBinding > 1) {
// if (isTypeUseDeprecated(this.actualReceiverType, scope))
// scope.problemReporter().deprecatedType(this.actualReceiverType, this);
// }
return this.resolvedType = getOtherFieldBindings(scope);
}
// thus it was a type
this.bits &= ~ASTNode.RestrictiveFlagMASK; // clear bits
this.bits |= Binding.TYPE;
case Binding.TYPE: // =============only type ==============
TypeBinding type = (TypeBinding) this.binding;
// if (isTypeUseDeprecated(type, scope))
// scope.problemReporter().deprecatedType(type, this);
return this.resolvedType = type;
}
}
// ========error cases===============
return this.resolvedType = this.reportError(scope);
}
/** Check and/or redirect the field access to the delegate receiver if any */
public TypeBinding checkFieldAccess(BlockScope scope) {
FieldBinding fieldBinding = (FieldBinding) this.binding;
MethodScope methodScope = scope.methodScope();
// check for forward references
if (this.indexOfFirstFieldBinding == 1
&& methodScope.enclosingSourceType() == fieldBinding.original().declaringClass
&& methodScope.lastVisibleFieldID >= 0
&& fieldBinding.id >= methodScope.lastVisibleFieldID
&& (!fieldBinding.isStatic() || methodScope.isStatic)) {
scope.problemReporter().forwardReference(this, 0, methodScope.enclosingSourceType());
}
this.bits &= ~ASTNode.RestrictiveFlagMASK; // clear bits
this.bits |= Binding.FIELD;
return getOtherFieldBindings(scope);
}
public void resolve(BlockScope scope) {
MethodScope methodScope = scope.methodScope();
if (methodScope == null) {
/* return statement outside of a method */
scope.problemReporter().cannotReturnOutsideFunction(this);
return;
}
MethodBinding methodBinding = null;
TypeBinding methodType =
(methodScope.referenceContext instanceof AbstractMethodDeclaration)
? ((methodBinding = ((AbstractMethodDeclaration) methodScope.referenceContext).binding)
== null
? null
: methodBinding.returnType)
: TypeBinding.ANY;
TypeBinding expressionType;
if (this.expression == null) {
if (methodType != null && !methodType.isAnyType())
scope.problemReporter().shouldReturn(methodType, this);
return;
}
this.expression.setExpectedType(methodType); // needed in case of generic method invocation
if ((expressionType = this.expression.resolveType(scope)) == null) return;
if (methodType == null) return;
if (methodType
!= expressionType) // must call before computeConversion() and typeMismatchError()
scope.compilationUnitScope().recordTypeConversion(methodType, expressionType);
if (this.expression.isConstantValueOfTypeAssignableToType(expressionType, methodType)
|| expressionType.isCompatibleWith(methodType)) {
return;
}
if (methodBinding != null && !methodBinding.isConstructor())
scope.problemReporter().typeMismatchError(expressionType, methodType, this.expression);
}
public TypeBinding getOtherFieldBindings(BlockScope scope) {
// At this point restrictiveFlag may ONLY have two potential value : FIELD LOCAL (i.e cast
// <<(VariableBinding) binding>> is valid)
int length = this.tokens.length;
FieldBinding field;
if ((this.bits & Binding.FIELD) != 0) {
field = (FieldBinding) this.binding;
if (!field.isStatic()) {
// must check for the static status....
if (this.indexOfFirstFieldBinding
> 1 // accessing to a field using a type as "receiver" is allowed only with static
// field
|| scope.methodScope()
.isStatic) { // the field is the first token of the qualified reference....
scope.problemReporter().staticFieldAccessToNonStaticVariable(this, field);
return null;
}
} else {
// indirect static reference ?
if (this.indexOfFirstFieldBinding > 1
&& field.declaringClass != this.actualReceiverType
&& field.declaringClass.canBeSeenBy(scope)) {
scope.problemReporter().indirectAccessToStaticField(this, field);
}
}
// only last field is actually a write access if any
if (isFieldUseDeprecated(
field,
scope,
(this.bits & ASTNode.IsStrictlyAssigned) != 0 && this.indexOfFirstFieldBinding == length))
scope.problemReporter().deprecatedField(field, this);
} else {
field = null;
}
TypeBinding type = ((VariableBinding) this.binding).type;
int index = this.indexOfFirstFieldBinding;
if (index == length) { // restrictiveFlag == FIELD
// perform capture conversion if read access
return type;
}
// allocation of the fieldBindings array and its respective constants
int otherBindingsLength = length - index;
this.otherCodegenBindings = this.otherBindings = new FieldBinding[otherBindingsLength];
this.otherDepths = new int[otherBindingsLength];
// save first depth, since will be updated by visibility checks of other bindings
int firstDepth = (this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT;
// iteration on each field
while (index < length) {
char[] token = this.tokens[index];
if (type == null) return null; // could not resolve type prior to this point
this.bits &= ~ASTNode.DepthMASK; // flush previous depth if any
FieldBinding previousField = field;
field = scope.getField(type, token, this);
int place = index - this.indexOfFirstFieldBinding;
this.otherBindings[place] = field;
this.otherDepths[place] = (this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT;
if (field.isValidBinding()) {
// set generic cast of for previous field (if any)
if (previousField != null) {
TypeBinding fieldReceiverType = type;
TypeBinding receiverErasure = type;
if (receiverErasure instanceof ReferenceBinding) {
if (receiverErasure.findSuperTypeWithSameErasure(field.declaringClass) == null) {
fieldReceiverType =
field.declaringClass; // handle indirect inheritance thru variable secondary bound
}
}
FieldBinding originalBinding = previousField.original();
}
// only last field is actually a write access if any
if (isFieldUseDeprecated(
field, scope, (this.bits & ASTNode.IsStrictlyAssigned) != 0 && index + 1 == length)) {
scope.problemReporter().deprecatedField(field, this);
}
if (field.isStatic()) {
// static field accessed through receiver? legal but unoptimal (optional warning)
scope.problemReporter().nonStaticAccessToStaticField(this, field);
// indirect static reference ?
if (field.declaringClass != type) {
scope.problemReporter().indirectAccessToStaticField(this, field);
}
}
type = field.type;
index++;
} else {
this.constant = Constant.NotAConstant; // don't fill other constants slots...
scope.problemReporter().invalidField(this, field, index, type);
setDepth(firstDepth);
return null;
}
}
setDepth(firstDepth);
type = (this.otherBindings[otherBindingsLength - 1]).type;
// perform capture conversion if read access
return type;
}
