初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/CesiumJsonReader/JsonHandler.h

@@ -0,0 +1,81 @@
+#pragma once
+
+#include "IJsonHandler.h"
+#include "IgnoreValueJsonHandler.h"
+#include "Library.h"
+
+#include <cstdint>
+#include <string>
+
+namespace CesiumJsonReader {
+/**
+ * @brief A dummy implementation of \ref IJsonHandler that will report a warning
+ * and return its parent when any of its `read...` methods are called.
+ *
+ * This class can be used as a base for any specialized JsonHandlers, overriding
+ * the methods required for the value you're handling and leaving the rest to
+ * report warnings if called.
+ */
+class CESIUMJSONREADER_API JsonHandler : public IJsonHandler {
+public:
+  JsonHandler() noexcept;
+  /** @copydoc IJsonHandler::readNull */
+  virtual IJsonHandler* readNull() override;
+  /** @copydoc IJsonHandler::readBool */
+  virtual IJsonHandler* readBool(bool b) override;
+  /** @copydoc IJsonHandler::readInt32 */
+  virtual IJsonHandler* readInt32(int32_t i) override;
+  /** @copydoc IJsonHandler::readUint32 */
+  virtual IJsonHandler* readUint32(uint32_t i) override;
+  /** @copydoc IJsonHandler::readInt64 */
+  virtual IJsonHandler* readInt64(int64_t i) override;
+  /** @copydoc IJsonHandler::readUint64 */
+  virtual IJsonHandler* readUint64(uint64_t i) override;
+  /** @copydoc IJsonHandler::readDouble */
+  virtual IJsonHandler* readDouble(double d) override;
+  /** @copydoc IJsonHandler::readString */
+  virtual IJsonHandler* readString(const std::string_view& str) override;
+  /** @copydoc IJsonHandler::readObjectStart */
+  virtual IJsonHandler* readObjectStart() override;
+  /** @copydoc IJsonHandler::readObjectKey */
+  virtual IJsonHandler* readObjectKey(const std::string_view& str) override;
+  /** @copydoc IJsonHandler::readObjectEnd */
+  virtual IJsonHandler* readObjectEnd() override;
+  /** @copydoc IJsonHandler::readArrayStart */
+  virtual IJsonHandler* readArrayStart() override;
+  /** @copydoc IJsonHandler::readArrayEnd */
+  virtual IJsonHandler* readArrayEnd() override;
+
+  /** @copydoc IJsonHandler::reportWarning */
+  virtual void reportWarning(
+      const std::string& warning,
+      std::vector<std::string>&& context = std::vector<std::string>()) override;
+
+protected:
+  /**
+   * @brief Resets the parent \ref IJsonHandler of this handler.
+   */
+  void reset(IJsonHandler* pParent);
+
+  /**
+   * @brief Obtains the parent \ref IJsonHandler of this handler.
+   */
+  IJsonHandler* parent();
+
+  /**
+   * @brief Ignore a single value and then return to the parent handler.
+   */
+  IJsonHandler* ignoreAndReturnToParent();
+
+  /**
+   * @brief Ignore a single value and the continue processing more tokens with
+   * this handler.
+   */
+  IJsonHandler* ignoreAndContinue();
+
+private:
+  IJsonHandler* _pParent = nullptr;
+  IgnoreValueJsonHandler _ignore;
+};
+
+} // namespace CesiumJsonReader