Op.h

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#pragma once
 
#include "Basic.h"
#include "Tokens.h"
 
#include "nixf/Basic/Nodes/Attrs.h"
 
#include <memory>
 
namespace nixf {
 
class Op : public Node {
  const tok::TokenKind OpKind;
 
public:
  Op(LexerCursorRange Range, tok::TokenKind OpKind)
      : Node(NK_Op, Range), OpKind(OpKind) {}
 
  [[nodiscard]] tok::TokenKind op() const { return OpKind; }
 
  [[nodiscard]] ChildVector children() const override { return {}; }
};
 
/// \brief Abstract class for binary operators and unary operators.
class ExprOp : public Expr {
  const std::shared_ptr<Op> O;
 
public:
  ExprOp(NodeKind Kind, LexerCursorRange Range, std::shared_ptr<Op> O)
      : Expr(Kind, Range), O(std::move(O)) {
    assert(this->O && "O must not be null");
  }
 
  [[nodiscard]] Op &op() const { return *O; }
 
  [[nodiscard]] ChildVector children() const override { return {O.get()}; }
};
 
class ExprBinOp : public ExprOp {
  const std::shared_ptr<Expr> LHS;
  const std::shared_ptr<Expr> RHS;
 
public:
  ExprBinOp(LexerCursorRange Range, std::shared_ptr<Op> O,
            std::shared_ptr<Expr> LHS, std::shared_ptr<Expr> RHS)
      : ExprOp(NK_ExprBinOp, Range, std::move(O)), LHS(std::move(LHS)),
        RHS(std::move(RHS)) {}
 
  [[nodiscard]] Expr *lhs() const { return LHS.get(); }
  [[nodiscard]] Expr *rhs() const { return RHS.get(); }
 
  [[nodiscard]] ChildVector children() const override {
    return {&op(), LHS.get(), RHS.get()};
  }
};
 
class ExprOpHasAttr : public ExprOp {
  const std::shared_ptr<Expr> E;
  const std::shared_ptr<AttrPath> Path;
 
public:
  ExprOpHasAttr(LexerCursorRange Range, std::shared_ptr<Op> O,
                std::shared_ptr<Expr> E, std::shared_ptr<AttrPath> Path)
      : ExprOp(NK_ExprOpHasAttr, Range, std::move(O)), E(std::move(E)),
        Path(std::move(Path)) {}
 
  [[nodiscard]] Expr *expr() const { return E.get(); }
  [[nodiscard]] AttrPath *attrpath() const { return Path.get(); }
 
  [[nodiscard]] ChildVector children() const override {
    return {E.get(), Path.get()};
  }
};
 
class ExprUnaryOp : public ExprOp {
  const std::shared_ptr<Expr> E;
 
public:
  ExprUnaryOp(LexerCursorRange Range, std::shared_ptr<Op> O,
              std::shared_ptr<Expr> E)
      : ExprOp(NK_ExprUnaryOp, Range, std::move(O)), E(std::move(E)) {}
 
  [[nodiscard]] Expr *expr() const { return E.get(); }
 
  [[nodiscard]] ChildVector children() const override {
    return {&op(), E.get()};
  }
};
 
} // namespace nixf