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 void resolve(MethodScope initializationScope) {
// the two <constant = Constant.NotAConstant> could be regrouped into
// a single line but it is clearer to have two lines while the reason of their
// existence is not at all the same. See comment for the second one.
// --------------------------------------------------------
if ((this.bits & ASTNode.HasBeenResolved) != 0) return;
if (this.binding == null || !this.binding.isValidBinding()) return;
this.bits |= ASTNode.HasBeenResolved;
// check if field is hiding some variable - issue is that field binding already got inserted in
// scope
// thus must lookup separately in super type and outer context
ClassScope classScope = initializationScope.enclosingClassScope();
if (classScope != null) {
checkHiding:
{
SourceTypeBinding declaringType = classScope.enclosingSourceType();
checkHidingSuperField:
{
if (declaringType.superclass == null) break checkHidingSuperField;
Binding existingVariable =
classScope.findField(
declaringType.superclass, this.name, this, false /*do not resolve hidden field*/);
if (existingVariable == null) break checkHidingSuperField; // keep checking outer scenario
if (!existingVariable.isValidBinding())
break checkHidingSuperField; // keep checking outer scenario
if (existingVariable instanceof FieldBinding) {
FieldBinding existingField = (FieldBinding) existingVariable;
if (existingField.original() == this.binding)
break checkHidingSuperField; // keep checking outer scenario
}
// collision with supertype field
initializationScope.problemReporter().fieldHiding(this, existingVariable);
break checkHiding; // already found a matching field
}
// only corner case is: lookup of outer field through static declaringType, which isn't
// detected by #getBinding as lookup starts
// from outer scope. Subsequent static contexts are detected for free.
Scope outerScope = classScope.parent;
if (outerScope.kind == Scope.COMPILATION_UNIT_SCOPE) break checkHiding;
Binding existingVariable =
outerScope.getBinding(
this.name, Binding.VARIABLE, this, false /*do not resolve hidden field*/);
if (existingVariable == null) break checkHiding;
if (!existingVariable.isValidBinding()) break checkHiding;
if (existingVariable == this.binding) break checkHiding;
if (existingVariable instanceof FieldBinding) {
FieldBinding existingField = (FieldBinding) existingVariable;
if (existingField.original() == this.binding) break checkHiding;
if (!existingField.isStatic() && declaringType.isStatic()) break checkHiding;
}
// collision with outer field or local variable
initializationScope.problemReporter().fieldHiding(this, existingVariable);
}
}
if (this.type != null) { // enum constants have no declared type
this.type.resolvedType = this.binding.type; // update binding for type reference
}
FieldBinding previousField = initializationScope.initializedField;
int previousFieldID = initializationScope.lastVisibleFieldID;
try {
initializationScope.initializedField = this.binding;
initializationScope.lastVisibleFieldID = this.binding.id;
// resolveAnnotations(initializationScope, this.annotations, this.binding);
// the resolution of the initialization hasn't been done
if (this.initialization != null) {
TypeBinding fieldType = this.binding.type;
TypeBinding initializationType;
this.initialization.setExpectedType(
fieldType); // needed in case of generic method invocation
if (this.initialization instanceof ArrayInitializer) {
if ((initializationType =
this.initialization.resolveTypeExpecting(initializationScope, fieldType))
!= null) {
((ArrayInitializer) this.initialization).binding = (ArrayBinding) initializationType;
}
} else if ((initializationType = this.initialization.resolveType(initializationScope))
!= null) {
if (fieldType
!= initializationType) // must call before computeConversion() and typeMismatchError()
initializationScope
.compilationUnitScope()
.recordTypeConversion(fieldType, initializationType);
if (this.initialization.isConstantValueOfTypeAssignableToType(
initializationType, fieldType)
|| (fieldType.isBaseType()
&& BaseTypeBinding.isWidening(fieldType.id, initializationType.id))
|| initializationType.isCompatibleWith(fieldType)) {
} else if (initializationScope.isBoxingCompatibleWith(initializationType, fieldType)
|| (initializationType.isBaseType() // narrowing then boxing ?
&& initializationScope.compilerOptions().sourceLevel
>= ClassFileConstants.JDK1_5 // autoboxing
&& !fieldType.isBaseType()
&& initialization.isConstantValueOfTypeAssignableToType(
initializationType,
initializationScope.environment().computeBoxingType(fieldType)))) {
} else {
initializationScope
.problemReporter()
.typeMismatchError(initializationType, fieldType, this);
}
}
// check for assignment with no effect
if (this.binding == Assignment.getDirectBinding(this.initialization)) {
initializationScope.problemReporter().assignmentHasNoEffect(this, this.name);
}
}
// Resolve Javadoc comment if one is present
if (this.javadoc != null) {
/*
if (classScope != null) {
this.javadoc.resolve(classScope);
}
*/
this.javadoc.resolve(initializationScope);
} else if (this.binding.declaringClass != null
&& !this.binding.declaringClass.isLocalType()) {
initializationScope
.problemReporter()
.javadocMissing(this.sourceStart, this.sourceEnd, this.binding.modifiers);
}
} finally {
initializationScope.initializedField = previousField;
initializationScope.lastVisibleFieldID = previousFieldID;
}
}
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;
}