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Refactoring (JetFlowInformationProvider)

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This commit is contained in:
Mikhail Glukhikh
2015-10-21 16:13:22 +03:00
parent d6988ad69e
commit e8a5df364b
1 changed files with 26 additions and 22 deletions
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compiler/frontend/src/org/jetbrains/kotlin/cfg/JetFlowInformationProvider.java
+26 -22
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@@ -346,7 +346,7 @@ public class JetFlowInformationProvider {
error = checkAssignmentBeforeDeclaration(ctxt, (KtExpression) element);
}
if (!error && processClassOrObject) {
checkInitializationUsingBackingField(ctxt, (KtExpression) element);
checkInitializationForCustomSetter(ctxt, (KtExpression) element);
}
}
}
@@ -491,30 +491,34 @@ public class JetFlowInformationProvider {
return false;
}
private boolean checkInitializationUsingBackingField(@NotNull VariableInitContext ctxt, @NotNull KtExpression expression) {
private boolean checkInitializationForCustomSetter(@NotNull VariableInitContext ctxt, @NotNull KtExpression expression) {
VariableDescriptor variableDescriptor = ctxt.variableDescriptor;
if (variableDescriptor instanceof PropertyDescriptor
&& !ctxt.enterInitState.mayBeInitialized()
&& ctxt.exitInitState.mayBeInitialized()) {
if (!variableDescriptor.isVar()) return false;
if (!trace.get(BindingContext.BACKING_FIELD_REQUIRED, (PropertyDescriptor) variableDescriptor)) return false;
PsiElement property = DescriptorToSourceUtils.descriptorToDeclaration(variableDescriptor);
assert property instanceof KtProperty;
KtPropertyAccessor setter = ((KtProperty) property).getSetter();
if (((PropertyDescriptor) variableDescriptor).getModality() == Modality.FINAL && (setter == null || !setter.hasBody())) {
return false;
}
KtExpression variable = expression;
if (expression instanceof KtDotQualifiedExpression) {
if (((KtDotQualifiedExpression) expression).getReceiverExpression() instanceof KtThisExpression) {
variable = ((KtDotQualifiedExpression) expression).getSelectorExpression();
}
}
if (variable instanceof KtSimpleNameExpression) {
trace.record(IS_UNINITIALIZED, (PropertyDescriptor) variableDescriptor);
return true;
if (!(variableDescriptor instanceof PropertyDescriptor)
|| ctxt.enterInitState.mayBeInitialized()
|| !ctxt.exitInitState.mayBeInitialized()
|| !variableDescriptor.isVar()
|| !trace.get(BindingContext.BACKING_FIELD_REQUIRED, (PropertyDescriptor) variableDescriptor)
) {
return false;
}
PsiElement property = DescriptorToSourceUtils.descriptorToDeclaration(variableDescriptor);
assert property instanceof KtProperty;
KtPropertyAccessor setter = ((KtProperty) property).getSetter();
if (((PropertyDescriptor) variableDescriptor).getModality() == Modality.FINAL && (setter == null || !setter.hasBody())) {
return false;
}
KtExpression variable = expression;
if (expression instanceof KtDotQualifiedExpression) {
if (((KtDotQualifiedExpression) expression).getReceiverExpression() instanceof KtThisExpression) {
variable = ((KtDotQualifiedExpression) expression).getSelectorExpression();
}
}
if (variable instanceof KtSimpleNameExpression) {
trace.record(IS_UNINITIALIZED, (PropertyDescriptor) variableDescriptor);
return true;
}
return false;
}