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LibCpp: Introduce DummyASTNode

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This allows us to use pase_* methods inside match_* methods,
without adding any actual AST nodes to the m_nodes list.
This commit is contained in:
Itamar 2021-04-02 13:57:52 +03:00 • committed by Andreas Kling
parent aa717e6a62
commit e16036b9cc
3 changed files with 38 additions and 16 deletions
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16
Userland/Libraries/LibCpp/AST.h
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@ -77,7 +77,8 @@ public:
virtual bool is_function_call() const { return false; }
virtual bool is_type() const { return false; }
virtual bool is_declaration() const { return false; }
virtual bool is_name() const {return false;}
virtual bool is_name() const { return false; }
virtual bool is_dummy_node() const { return false; }
protected:
ASTNode(ASTNode* parent, Optional<Position> start, Optional<Position> end, const String& filename)
@ -347,7 +348,7 @@ public:
virtual ~Name() override = default;
virtual const char* class_name() const override { return "Name"; }
virtual void dump(size_t indent) const override;
virtual bool is_name() const override {return true;}
virtual bool is_name() const override { return true; }
Name(ASTNode* parent, Optional<Position> start, Optional<Position> end, const String& filename)
: Expression(parent, start, end, filename)
@ -756,4 +757,15 @@ public:
NonnullRefPtrVector<Expression> m_expressions;
};
class DummyAstNode : public ASTNode {
public:
DummyAstNode(ASTNode* parent, Optional<Position> start, Optional<Position> end, const String& filename)
: ASTNode(parent, start, end, filename)
{
}
virtual bool is_dummy_node() const override { return true; }
virtual const char* class_name() const override { return "DummyAstNode"; }
virtual void dump(size_t) const override { }
};
}