The corresponding AST Matcher for the parent class declaration
Given the class hierarchy:
class A {};
class B {};
class C : public A {};
class D : public C {};
I am trying to refactor class C to inherit from class B and not class A. I can easily get a definition statement with recordDecl
:
recordDecl(hasName("C"), isDefinition()).bind("MyClass")
With the associated MatchCallback, I can the dump()
class check that it matches the right node. However, I haven't found a way to bind to instead, public A
or better yet, simply A
.
What would be a suitable AST Matcher for Capture public A
or A
Class C?
EDIT:
The result clang -ast-dump
filtered for class C in this situation will display something similar to the following:
CXXRecordDecl [address] <line numbers> <loc> class C definition
|- public 'class A'
|- CXXRecordDecl [address 2] <columns> <loc> implicit referenced class C
As if there is no AST Node type to represent parent class declarations in ast-dump.
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I found this link providing some context for how to expand. Notably, one tutorial suggested using RecordDecl
in a match handler for the returned node versus this link using CXXRecordDecl
. So if we output each base to a match handler:
if (const CXXRecord *entityBase = Result.Nodes.getNodeAs<clang::CXXRecordDecl>("entityBase")) {
for (auto &p : entityBase->bases()) {
p.dump();
}
}
We find that the class reference is A RecordType
referenced by a CXXRecord
. However, using clang-query
, I have not found a way to bind match recordType(...)
with anything capable of pulling only public A
or A
. Instead, the solution became something like this:
std::string qual = "public ";
std::string parentName = "A";
std::string parentType = "class " + parentName;
if (0 == parentType.compare(p.getType().getAsString())) {
Replacement Rep(*(Result.SourceManager),
p.getLocStart().getLocWithOffset(qual.length()),
parentName.length(),
"B");
Replace->insert(Rep);
}
I won't mark this as an answer, but just in case someone has a way to use recordType to bind the base class reference directly, rather than iterate and check the type names of the base class as shown above.
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