private void resolvePropertyInitializer(
JetProperty property,
PropertyDescriptor propertyDescriptor,
JetExpression initializer,
JetScope scope) {
// JetFlowInformationProvider flowInformationProvider =
// context.getDescriptorResolver().computeFlowData(property, initializer); // TODO : flow JET-15
JetType expectedTypeForInitializer =
property.getPropertyTypeRef() != null ? propertyDescriptor.getType() : NO_EXPECTED_TYPE;
JetType type =
expressionTypingServices.getType(
descriptorResolver.getPropertyDeclarationInnerScope(
scope,
propertyDescriptor,
propertyDescriptor.getTypeParameters(),
propertyDescriptor.getReceiverParameter(),
trace),
initializer,
expectedTypeForInitializer,
trace);
//
// JetType expectedType = propertyDescriptor.getInType();
// if (expectedType == null) {
// expectedType = propertyDescriptor.getType();
// }
// if (type != null && expectedType != null
// && !context.getSemanticServices().getTypeChecker().isSubtypeOf(type,
// expectedType)) {
//// trace.report(TYPE_MISMATCH.on(initializer, expectedType, type));
// }
}
private void checkPropertyGetter(
@NotNull PropertyDescriptor descriptor, @NotNull JetExpression expression) {
PropertyGetterDescriptor getter = descriptor.getGetter();
if (getter != null) {
checkPropertyAccessor(getter, expression, descriptor.isVar());
}
}
private void generateDefaultGetter(JetProperty p) {
final PropertyDescriptor propertyDescriptor =
(PropertyDescriptor) state.getBindingContext().get(BindingContext.VARIABLE, p);
int flags =
JetTypeMapper.getAccessModifiers(propertyDescriptor, 0)
| (propertyDescriptor.getModality() == Modality.ABSTRACT ? Opcodes.ACC_ABSTRACT : 0);
generateDefaultGetter(propertyDescriptor, flags, p);
}
private void generateDefaultSetter(JetProperty p) {
final PropertyDescriptor propertyDescriptor =
(PropertyDescriptor) state.getBindingContext().get(BindingContext.VARIABLE, p);
assert propertyDescriptor != null;
int modifiers = JetTypeMapper.getAccessModifiers(propertyDescriptor, 0);
PropertySetterDescriptor setter = propertyDescriptor.getSetter();
int flags = setter == null ? modifiers : JetTypeMapper.getAccessModifiers(setter, modifiers);
generateDefaultSetter(propertyDescriptor, flags, p);
}
private void resolvePropertyDeclarationBodies() {
// Member properties
Set<JetProperty> processed = Sets.newHashSet();
for (Map.Entry<JetClass, MutableClassDescriptor> entry : context.getClasses().entrySet()) {
JetClass jetClass = entry.getKey();
if (!context.completeAnalysisNeeded(jetClass)) continue;
MutableClassDescriptor classDescriptor = entry.getValue();
for (JetProperty property : jetClass.getProperties()) {
final PropertyDescriptor propertyDescriptor = this.context.getProperties().get(property);
assert propertyDescriptor != null;
computeDeferredType(propertyDescriptor.getReturnType());
JetExpression initializer = property.getInitializer();
if (initializer != null) {
ConstructorDescriptor primaryConstructor =
classDescriptor.getUnsubstitutedPrimaryConstructor();
if (primaryConstructor != null) {
JetScope declaringScopeForPropertyInitializer =
this.context.getDeclaringScopes().get(property);
resolvePropertyInitializer(
property, propertyDescriptor, initializer, declaringScopeForPropertyInitializer);
}
}
resolvePropertyAccessors(property, propertyDescriptor);
processed.add(property);
}
}
// Top-level properties & properties of objects
for (Map.Entry<JetProperty, PropertyDescriptor> entry :
this.context.getProperties().entrySet()) {
JetProperty property = entry.getKey();
if (!context.completeAnalysisNeeded(property)) continue;
if (processed.contains(property)) continue;
final PropertyDescriptor propertyDescriptor = entry.getValue();
computeDeferredType(propertyDescriptor.getReturnType());
JetScope declaringScope = this.context.getDeclaringScopes().get(property);
JetExpression initializer = property.getInitializer();
if (initializer != null) {
resolvePropertyInitializer(property, propertyDescriptor, initializer, declaringScope);
}
resolvePropertyAccessors(property, propertyDescriptor);
}
}
private void checkPropertySetter(
@NotNull PropertyDescriptor descriptor, @NotNull JetExpression expression) {
PropertySetterDescriptor setter = descriptor.getSetter();
if (setter != null) {
checkPropertyAccessor(setter, expression, true);
}
}
public void genDelegate(
PropertyDescriptor declaration, PropertyDescriptor overriddenDescriptor, StackValue field) {
JvmPropertyAccessorSignature jvmPropertyAccessorSignature =
state
.getInjector()
.getJetTypeMapper()
.mapGetterSignature(declaration, OwnerKind.IMPLEMENTATION);
functionCodegen.genDelegate(
declaration,
overriddenDescriptor,
field,
jvmPropertyAccessorSignature.getJvmMethodSignature());
if (declaration.isVar()) {
jvmPropertyAccessorSignature =
state
.getInjector()
.getJetTypeMapper()
.mapSetterSignature(declaration, OwnerKind.IMPLEMENTATION);
functionCodegen.genDelegate(
declaration,
overriddenDescriptor,
field,
jvmPropertyAccessorSignature.getJvmMethodSignature());
}
}
private void checkPropertyDescriptor(
@NotNull JetExpression expression, @NotNull PropertyDescriptor propertyDescriptor) {
// Deprecated for Property
if (reportAnnotationIfNeeded(expression, propertyDescriptor, propertyDescriptor.isVar())) {
return;
}
// Deprecated for Getter (val, var), Setter (var)
if (!propertyDescriptor.isVar()) {
checkPropertyGetter(propertyDescriptor, expression);
} else {
IElementType operation = null;
JetBinaryExpression binaryExpression =
PsiTreeUtil.getParentOfType(expression, JetBinaryExpression.class);
if (binaryExpression != null) {
JetExpression left = binaryExpression.getLeft();
if (left == expression) {
operation = binaryExpression.getOperationToken();
} else {
JetReferenceExpression[] jetReferenceExpressions =
PsiTreeUtil.getChildrenOfType(left, JetReferenceExpression.class);
if (jetReferenceExpressions != null) {
for (JetReferenceExpression expr : jetReferenceExpressions) {
if (expr == expression) {
operation = binaryExpression.getOperationToken();
break;
}
}
}
}
} else {
JetUnaryExpression unaryExpression =
PsiTreeUtil.getParentOfType(expression, JetUnaryExpression.class);
if (unaryExpression != null) {
operation = unaryExpression.getOperationReference().getReferencedNameElementType();
}
}
if (operation != null && PROPERTY_SET_OPERATIONS.contains(operation)) {
checkPropertySetter(propertyDescriptor, expression);
} else {
checkPropertyGetter(propertyDescriptor, expression);
}
}
}
private void resolvePropertyAccessors(
JetProperty property, PropertyDescriptor propertyDescriptor) {
ObservableBindingTrace fieldAccessTrackingTrace = createFieldTrackingTrace(propertyDescriptor);
JetPropertyAccessor getter = property.getGetter();
PropertyGetterDescriptor getterDescriptor = propertyDescriptor.getGetter();
if (getter != null && getterDescriptor != null) {
JetScope accessorScope = makeScopeForPropertyAccessor(getter, propertyDescriptor);
resolveFunctionBody(fieldAccessTrackingTrace, getter, getterDescriptor, accessorScope);
}
JetPropertyAccessor setter = property.getSetter();
PropertySetterDescriptor setterDescriptor = propertyDescriptor.getSetter();
if (setter != null && setterDescriptor != null) {
JetScope accessorScope = makeScopeForPropertyAccessor(setter, propertyDescriptor);
resolveFunctionBody(fieldAccessTrackingTrace, setter, setterDescriptor, accessorScope);
}
}
private boolean shouldInitializeProperty(@NotNull JetProperty property) {
JetExpression initializer = property.getDelegateExpressionOrInitializer();
if (initializer == null) return false;
PropertyDescriptor propertyDescriptor =
(PropertyDescriptor) bindingContext.get(VARIABLE, property);
assert propertyDescriptor != null;
CompileTimeConstant<?> compileTimeValue = propertyDescriptor.getCompileTimeInitializer();
if (compileTimeValue == null) return true;
// TODO: OPTIMIZATION: don't initialize static final fields
Object value = compileTimeValue.getValue();
JetType jetType = getPropertyOrDelegateType(property, propertyDescriptor);
Type type = typeMapper.mapType(jetType);
return !skipDefaultValue(propertyDescriptor, value, type);
}
public void gen(JetProperty p) {
final VariableDescriptor descriptor = state.getBindingContext().get(BindingContext.VARIABLE, p);
if (!(descriptor instanceof PropertyDescriptor)) {
throw new UnsupportedOperationException("expect a property to have a property descriptor");
}
final PropertyDescriptor propertyDescriptor = (PropertyDescriptor) descriptor;
if (kind == OwnerKind.NAMESPACE
|| kind == OwnerKind.IMPLEMENTATION
|| kind == OwnerKind.TRAIT_IMPL) {
if (kind != OwnerKind.TRAIT_IMPL) generateBackingField(p, propertyDescriptor);
generateGetter(p, propertyDescriptor);
generateSetter(p, propertyDescriptor);
} else if (kind instanceof OwnerKind.DelegateKind) {
generateDefaultGetter(propertyDescriptor, Opcodes.ACC_PUBLIC, p);
if (propertyDescriptor.isVar()) {
generateDefaultSetter(propertyDescriptor, Opcodes.ACC_PUBLIC, p);
}
}
}
@NotNull
private JetType getPropertyOrDelegateType(
@NotNull JetProperty property, @NotNull PropertyDescriptor descriptor) {
JetExpression delegateExpression = property.getDelegateExpression();
if (delegateExpression != null) {
JetType delegateType = bindingContext.get(BindingContext.EXPRESSION_TYPE, delegateExpression);
assert delegateType != null : "Type of delegate expression should be recorded";
return delegateType;
}
return descriptor.getType();
}
private void generateSetter(JetProperty p, PropertyDescriptor propertyDescriptor) {
final JetPropertyAccessor setter = p.getSetter();
if (setter != null) {
if (setter.getBodyExpression() != null) {
final PropertySetterDescriptor setterDescriptor = propertyDescriptor.getSetter();
assert setterDescriptor != null;
JvmPropertyAccessorSignature signature =
state.getInjector().getJetTypeMapper().mapSetterSignature(propertyDescriptor, kind);
functionCodegen.generateMethod(
setter,
signature.getJvmMethodSignature(),
true,
signature.getPropertyTypeKotlinSignature(),
setterDescriptor);
} else if (isExternallyAccessible(propertyDescriptor)) {
generateDefaultSetter(p);
}
} else if (isExternallyAccessible(propertyDescriptor) && propertyDescriptor.isVar()) {
generateDefaultSetter(p);
}
}
private JetScope makeScopeForPropertyAccessor(
@NotNull JetPropertyAccessor accessor, PropertyDescriptor propertyDescriptor) {
JetScope declaringScope = context.getDeclaringScopes().get(accessor);
JetScope propertyDeclarationInnerScope =
descriptorResolver.getPropertyDeclarationInnerScope(
declaringScope,
propertyDescriptor,
propertyDescriptor.getTypeParameters(),
propertyDescriptor.getReceiverParameter(),
trace);
WritableScope accessorScope =
new WritableScopeImpl(
propertyDeclarationInnerScope,
declaringScope.getContainingDeclaration(),
new TraceBasedRedeclarationHandler(trace))
.setDebugName("Accessor scope");
accessorScope.changeLockLevel(WritableScope.LockLevel.READING);
return accessorScope;
}
private void generateBackingField(JetProperty p, PropertyDescriptor propertyDescriptor) {
if (state.getBindingContext().get(BindingContext.BACKING_FIELD_REQUIRED, propertyDescriptor)) {
DeclarationDescriptor containingDeclaration = propertyDescriptor.getContainingDeclaration();
if (CodegenUtil.isInterface(containingDeclaration)) return;
Object value = null;
final JetExpression initializer = p.getInitializer();
if (initializer != null) {
if (initializer instanceof JetConstantExpression) {
CompileTimeConstant<?> compileTimeValue =
state.getBindingContext().get(BindingContext.COMPILE_TIME_VALUE, initializer);
value = compileTimeValue != null ? compileTimeValue.getValue() : null;
}
}
int modifiers;
if (kind == OwnerKind.NAMESPACE) {
int access = JetTypeMapper.getAccessModifiers(propertyDescriptor, 0);
modifiers = access | Opcodes.ACC_STATIC;
} else {
modifiers = JetTypeMapper.getAccessModifiers(propertyDescriptor, 0);
}
if (!propertyDescriptor.isVar()) {
modifiers |= Opcodes.ACC_FINAL;
}
if (state.getInjector().getJetStandardLibrary().isVolatile(propertyDescriptor)) {
modifiers |= Opcodes.ACC_VOLATILE;
}
Type type =
state
.getInjector()
.getJetTypeMapper()
.mapType(propertyDescriptor.getType(), MapTypeMode.VALUE);
FieldVisitor fieldVisitor =
v.newField(p, modifiers, p.getName(), type.getDescriptor(), null, value);
AnnotationCodegen.forField(fieldVisitor, state.getInjector().getJetTypeMapper())
.genAnnotations(propertyDescriptor);
}
}
@Override
public Boolean computeValue(
SlicedMap map,
PropertyDescriptor propertyDescriptor,
Boolean backingFieldRequired,
boolean valueNotFound) {
if (propertyDescriptor.getKind() != CallableMemberDescriptor.Kind.DECLARATION) {
return false;
}
backingFieldRequired = valueNotFound ? false : backingFieldRequired;
assert backingFieldRequired != null;
// TODO: user BindingContextAccessors
PsiElement declarationPsiElement =
map.get(BindingContextUtils.DESCRIPTOR_TO_DECLARATION, propertyDescriptor);
if (declarationPsiElement instanceof JetParameter) {
JetParameter jetParameter = (JetParameter) declarationPsiElement;
return jetParameter.getValOrVarNode() != null
|| backingFieldRequired; // this part is unused because we do not allow access to
// constructor parameters in member bodies
}
if (propertyDescriptor.getModality() == Modality.ABSTRACT) return false;
PropertyGetterDescriptor getter = propertyDescriptor.getGetter();
PropertySetterDescriptor setter = propertyDescriptor.getSetter();
if (getter == null) {
return true;
} else if (propertyDescriptor.isVar() && setter == null) {
return true;
} else if (setter != null
&& !setter.hasBody()
&& setter.getModality() != Modality.ABSTRACT) {
return true;
} else if (!getter.hasBody() && getter.getModality() != Modality.ABSTRACT) {
return true;
}
return backingFieldRequired;
}
private void generateGetter(JetProperty p, PropertyDescriptor propertyDescriptor) {
final JetPropertyAccessor getter = p.getGetter();
if (getter != null) {
if (getter.getBodyExpression() != null) {
JvmPropertyAccessorSignature signature =
state.getInjector().getJetTypeMapper().mapGetterSignature(propertyDescriptor, kind);
functionCodegen.generateMethod(
getter,
signature.getJvmMethodSignature(),
true,
signature.getPropertyTypeKotlinSignature(),
propertyDescriptor.getGetter());
} else if (isExternallyAccessible(propertyDescriptor)) {
generateDefaultGetter(p);
}
} else if (isExternallyAccessible(propertyDescriptor)) {
generateDefaultGetter(p);
}
}
private static boolean skipDefaultValue(
@NotNull PropertyDescriptor propertyDescriptor, Object value, @NotNull Type type) {
if (isPrimitive(type)) {
if (!propertyDescriptor.getType().isNullable() && value instanceof Number) {
if (type == Type.INT_TYPE && ((Number) value).intValue() == 0) {
return true;
}
if (type == Type.BYTE_TYPE && ((Number) value).byteValue() == 0) {
return true;
}
if (type == Type.LONG_TYPE && ((Number) value).longValue() == 0L) {
return true;
}
if (type == Type.SHORT_TYPE && ((Number) value).shortValue() == 0) {
return true;
}
if (type == Type.DOUBLE_TYPE && ((Number) value).doubleValue() == 0d) {
return true;
}
if (type == Type.FLOAT_TYPE && ((Number) value).floatValue() == 0f) {
return true;
}
}
if (type == Type.BOOLEAN_TYPE && value instanceof Boolean && !((Boolean) value)) {
return true;
}
if (type == Type.CHAR_TYPE && value instanceof Character && ((Character) value) == 0) {
return true;
}
} else {
if (value == null) {
return true;
}
}
return false;
}
private static boolean isExternallyAccessible(PropertyDescriptor p) {
return p.getVisibility() != Visibilities.PRIVATE
|| CodegenUtil.isClassObject(p.getContainingDeclaration());
}
public void generateDefaultSetter(
PropertyDescriptor propertyDescriptor, int flags, PsiElement origin) {
if (propertyDescriptor.getKind() == CallableMemberDescriptor.Kind.FAKE_OVERRIDE) {
throw new IllegalStateException("must not generate code for fake overrides");
}
if (kind == OwnerKind.TRAIT_IMPL) {
return;
}
if (kind == OwnerKind.NAMESPACE) {
flags |= Opcodes.ACC_STATIC;
}
PsiElement psiElement =
state
.getBindingContext()
.get(
BindingContext.DESCRIPTOR_TO_DECLARATION,
propertyDescriptor.getContainingDeclaration());
boolean isTrait = psiElement instanceof JetClass && ((JetClass) psiElement).isTrait();
if (isTrait && !(kind instanceof OwnerKind.DelegateKind)) flags |= Opcodes.ACC_ABSTRACT;
if (propertyDescriptor.getModality() == Modality.FINAL) {
flags |= Opcodes.ACC_FINAL;
}
JvmPropertyAccessorSignature signature =
state.getInjector().getJetTypeMapper().mapSetterSignature(propertyDescriptor, kind);
final String descriptor = signature.getJvmMethodSignature().getAsmMethod().getDescriptor();
MethodVisitor mv =
v.newMethod(
origin, flags, setterName(propertyDescriptor.getName()), descriptor, null, null);
generateJetPropertyAnnotation(
mv,
signature.getPropertyTypeKotlinSignature(),
signature.getJvmMethodSignature().getKotlinTypeParameter());
if (propertyDescriptor.getSetter() != null) {
assert !propertyDescriptor.getSetter().hasBody();
AnnotationCodegen.forMethod(mv, state.getInjector().getJetTypeMapper())
.genAnnotations(propertyDescriptor.getSetter());
}
if (v.generateCode() != ClassBuilder.Mode.SIGNATURES
&& (!isTrait || kind instanceof OwnerKind.DelegateKind)) {
if (propertyDescriptor.getModality() != Modality.ABSTRACT) {
mv.visitCode();
if (v.generateCode() == ClassBuilder.Mode.STUBS) {
StubCodegen.generateStubThrow(mv);
} else {
InstructionAdapter iv = new InstructionAdapter(mv);
final Type type =
state
.getInjector()
.getJetTypeMapper()
.mapType(propertyDescriptor.getType(), MapTypeMode.VALUE);
int paramCode = 0;
if (kind != OwnerKind.NAMESPACE) {
iv.load(0, JetTypeMapper.TYPE_OBJECT);
paramCode = 1;
}
if ((kind instanceof OwnerKind.DelegateKind)
!= (propertyDescriptor.getKind() == FunctionDescriptor.Kind.DELEGATION)) {
throw new IllegalStateException("mismatching kind in " + propertyDescriptor);
}
if (kind instanceof OwnerKind.DelegateKind) {
OwnerKind.DelegateKind dk = (OwnerKind.DelegateKind) kind;
iv.load(0, JetTypeMapper.TYPE_OBJECT);
dk.getDelegate().put(JetTypeMapper.TYPE_OBJECT, iv);
iv.load(paramCode, type);
iv.invokeinterface(
dk.getOwnerClass(), setterName(propertyDescriptor.getName()), descriptor);
} else {
iv.load(paramCode, type);
iv.visitFieldInsn(
kind == OwnerKind.NAMESPACE ? Opcodes.PUTSTATIC : Opcodes.PUTFIELD,
state.getInjector().getJetTypeMapper().getOwner(propertyDescriptor, kind),
propertyDescriptor.getName(),
type.getDescriptor());
}
iv.visitInsn(Opcodes.RETURN);
}
}
FunctionCodegen.endVisit(mv, "setter", origin);
}
}