src/tint/lang/core/ir/exit_if.h

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#ifndef SRC_TINT_LANG_CORE_IR_EXIT_IF_H_
#define SRC_TINT_LANG_CORE_IR_EXIT_IF_H_

#include <string>

#include "src/tint/lang/core/ir/exit.h"
#include "src/tint/utils/rtti/castable.h"

// Forward declarations
namespace tint::core::ir {
class If;
}  // namespace tint::core::ir

namespace tint::core::ir {

/// A exit if instruction.
class ExitIf final : public Castable<ExitIf, Exit> {
  public:
    /// The base offset in Operands() for the args
    static constexpr size_t kArgsOperandOffset = 0;

    /// Constructor (no operands, no if)
    /// @param id the instruction id
    explicit ExitIf(Id id);

    /// Constructor
    /// @param id the instruction id
    /// @param i the if being exited
    /// @param args the target MultiInBlock arguments
    ExitIf(Id id, ir::If* i, VectorRef<Value*> args = tint::Empty);

    ~ExitIf() override;

    /// @copydoc Instruction::Clone()
    ExitIf* Clone(CloneContext& ctx) override;

    /// Re-associates the exit with the given if instruction
    /// @param i the new If to exit from
    void SetIf(ir::If* i);

    /// @returns the if being exited
    ir::If* If();

    /// @returns the if being exited
    const ir::If* If() const;

    /// @returns the friendly name for the instruction
    std::string FriendlyName() const override { return "exit_if"; }
};

}  // namespace tint::core::ir

#endif  // SRC_TINT_LANG_CORE_IR_EXIT_IF_H_