mirror of
https://github.com/github/codeql.git
synced 2025-12-22 11:46:32 +01:00
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
#pragma once
|
|
|
|
#include <swift/AST/ASTVisitor.h>
|
|
#include <swift/AST/TypeVisitor.h>
|
|
|
|
#include "swift/extractor/SwiftDispatcher.h"
|
|
|
|
namespace codeql {
|
|
|
|
namespace detail {
|
|
class VisitorBase {
|
|
protected:
|
|
SwiftDispatcher& dispatcher_;
|
|
|
|
public:
|
|
// SwiftDispatcher should outlive this instance
|
|
VisitorBase(SwiftDispatcher& dispatcher) : dispatcher_{dispatcher} {}
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
// we want to override the default swift visitor behaviour of chaining calls to immediate
|
|
// superclasses by default and instead provide our own TBD default (using the exact type)
|
|
#define DEFAULT(KIND, CLASS, PARENT) \
|
|
void visit##CLASS##KIND(swift::CLASS##KIND* e) { dispatcher_.emitUnknown(e); }
|
|
|
|
// base class for our AST visitors, getting a SwiftDispatcher member and default emission for
|
|
// unknown/TBD entities. Like `swift::ASTVisitor`, this uses CRTP (the Curiously Recurring Template
|
|
// Pattern)
|
|
template <typename CrtpSubclass>
|
|
class AstVisitorBase : public swift::ASTVisitor<CrtpSubclass>, protected detail::VisitorBase {
|
|
public:
|
|
using VisitorBase::VisitorBase;
|
|
|
|
#define DECL(CLASS, PARENT) DEFAULT(Decl, CLASS, PARENT)
|
|
#include "swift/AST/DeclNodes.def"
|
|
|
|
#define STMT(CLASS, PARENT) DEFAULT(Stmt, CLASS, PARENT)
|
|
#include "swift/AST/StmtNodes.def"
|
|
|
|
#define EXPR(CLASS, PARENT) DEFAULT(Expr, CLASS, PARENT)
|
|
#include "swift/AST/ExprNodes.def"
|
|
|
|
#define PATTERN(CLASS, PARENT) DEFAULT(Pattern, CLASS, PARENT)
|
|
#include "swift/AST/PatternNodes.def"
|
|
|
|
#define TYPEREPR(CLASS, PARENT) DEFAULT(TypeRepr, CLASS, PARENT)
|
|
#include "swift/AST/TypeReprNodes.def"
|
|
};
|
|
|
|
// base class for our type visitor, getting a SwiftDispatcher member and default emission for
|
|
// unknown/TBD types. Like `swift::TypeVisitor`, this uses CRTP (the Curiously Recurring Template
|
|
// Pattern)
|
|
template <typename CrtpSubclass>
|
|
class TypeVisitorBase : public swift::TypeVisitor<CrtpSubclass>, protected detail::VisitorBase {
|
|
public:
|
|
using VisitorBase::VisitorBase;
|
|
|
|
#define TYPE(CLASS, PARENT) DEFAULT(Type, CLASS, PARENT)
|
|
#include "swift/AST/TypeNodes.def"
|
|
};
|
|
|
|
#undef DEFAULT
|
|
|
|
} // namespace codeql
|