public static Collection<JetReturnExpression> collectReturns(@NotNull JetExpression expression) {
Collection<JetReturnExpression> result = Lists.newArrayList();
expression.accept(
new JetTreeVisitor<Collection<JetReturnExpression>>() {
@Override
public Void visitReturnExpression(
@NotNull JetReturnExpression expression, Collection<JetReturnExpression> data) {
data.add(expression);
return null;
}
},
result);
return result;
}
@NotNull
private JetTypeInfo getSelectorReturnTypeInfo(
@NotNull ReceiverValue receiver,
@Nullable ASTNode callOperationNode,
@NotNull JetExpression selectorExpression,
@NotNull ResolutionContext context,
@NotNull ResolveMode resolveMode,
@NotNull ResolutionResultsCache resolutionResultsCache) {
if (selectorExpression instanceof JetCallExpression) {
return getCallExpressionTypeInfoWithoutFinalTypeCheck(
(JetCallExpression) selectorExpression,
receiver,
callOperationNode,
context,
resolveMode,
resolutionResultsCache);
} else if (selectorExpression instanceof JetSimpleNameExpression) {
return getSimpleNameExpressionTypeInfo(
(JetSimpleNameExpression) selectorExpression, receiver, callOperationNode, context);
} else if (selectorExpression instanceof JetQualifiedExpression) {
JetQualifiedExpression qualifiedExpression = (JetQualifiedExpression) selectorExpression;
JetExpression newReceiverExpression = qualifiedExpression.getReceiverExpression();
JetTypeInfo newReceiverTypeInfo =
getSelectorReturnTypeInfo(
receiver,
callOperationNode,
newReceiverExpression,
context.replaceExpectedType(NO_EXPECTED_TYPE),
resolveMode,
resolutionResultsCache);
JetType newReceiverType = newReceiverTypeInfo.getType();
DataFlowInfo newReceiverDataFlowInfo = newReceiverTypeInfo.getDataFlowInfo();
JetExpression newSelectorExpression = qualifiedExpression.getSelectorExpression();
if (newReceiverType != null && newSelectorExpression != null) {
ExpressionReceiver expressionReceiver =
new ExpressionReceiver(newReceiverExpression, newReceiverType);
return getSelectorReturnTypeInfo(
expressionReceiver,
qualifiedExpression.getOperationTokenNode(),
newSelectorExpression,
context.replaceDataFlowInfo(newReceiverDataFlowInfo),
resolveMode,
resolutionResultsCache);
}
} else {
context.trace.report(ILLEGAL_SELECTOR.on(selectorExpression, selectorExpression.getText()));
}
return JetTypeInfo.create(null, context.dataFlowInfo);
}