private static PsiType doGetType(PsiBinaryExpressionImpl param) {
PsiExpression lOperand = param.getLOperand();
PsiExpression rOperand = param.getROperand();
if (rOperand == null) return null;
PsiType rType = rOperand.getType();
IElementType sign = param.getOperationTokenType();
// optimization: if we can calculate type based on right type only
PsiType type = TypeConversionUtil.calcTypeForBinaryExpression(null, rType, sign, false);
if (type != TypeConversionUtil.NULL_TYPE) return type;
if (lOperand instanceof PsiBinaryExpressionImpl
&& !JavaResolveCache.getInstance(param.getProject()).isTypeCached(lOperand)) {
// cache all intermediate expression types from bottom up
PsiBinaryExpressionImpl topLevel = param;
PsiElement element = param;
while (element instanceof PsiBinaryExpressionImpl) {
topLevel = (PsiBinaryExpressionImpl) element;
element = element.getParent();
}
topLevel.accept(
new JavaRecursiveElementWalkingVisitor() {
@Override
protected void elementFinished(PsiElement element) {
if (element instanceof PsiExpression) {
ProgressIndicatorProvider.checkCanceled();
((PsiExpression) element).getType();
}
}
});
}
PsiType lType = lOperand.getType();
return TypeConversionUtil.calcTypeForBinaryExpression(lType, rType, sign, true);
}
