early-access version 1255

externals/sirit/src/operand.h

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+/* This file is part of the sirit project.
+ * Copyright (c) 2019 sirit
+ * This software may be used and distributed according to the terms of the
+ * 3-Clause BSD License
+ */
+
+#pragma once
+
+#include <cstddef>
+
+#include "stream.h"
+
+namespace Sirit {
+
+enum class OperandType { Invalid, Op, Number, String };
+
+class Operand {
+public:
+    explicit Operand(OperandType operand_type);
+    virtual ~Operand();
+
+    virtual void Fetch(Stream& stream) const = 0;
+
+    virtual std::size_t GetWordCount() const noexcept = 0;
+
+    virtual bool operator==(const Operand& other) const noexcept = 0;
+
+    bool operator!=(const Operand& other) const noexcept {
+        return !operator==(other);
+    }
+
+    bool EqualType(const Operand& other) const noexcept {
+        return operand_type == other.operand_type;
+    }
+
+private:
+    OperandType operand_type;
+};
+
+} // namespace Sirit