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C++: add method qldoc in Class.qll

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This commit is contained in:
Robert Marsh
2020-04-13 15:22:30 -07:00
parent f24c4e51c5
commit 10824f9612
1 changed files with 25 additions and 0 deletions
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25
cpp/ql/src/semmle/code/cpp/Class.qll
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@@ -458,6 +458,15 @@ class Class extends UserType {
exists(ClassDerivation d | d.getDerivedClass() = this and d = result)
}
/**
* Gets class derivation number `index` of this class/struct, for example the
* `public B` is derivation 1 in the following code:
* ```
* class D : public A, public B, public C {
* ...
* };
* ```
*/
ClassDerivation getDerivation(int index) {
exists(ClassDerivation d | d.getDerivedClass() = this and d.getIndex() = index and d = result)
}
@@ -900,6 +909,22 @@ class AbstractClass extends Class {
class TemplateClass extends Class {
TemplateClass() { usertypes(underlyingElement(this), _, 6) }
/**
* Gets a class instantiated from this template.
*
* For example for `MyTemplateClass<T>` in the following code, the results are
* `MyTemplateClass<int>` and `MyTemplateClass<long>`:
* ```
* template<class T>
* class MyTemplateClass {
* ...
* };
*
* MyTemplateClass<int> instance;
*
* MyTemplateClass<long> instance;
* ```
*/
Class getAnInstantiation() {
result.isConstructedFrom(this) and
exists(result.getATemplateArgument())