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arduino-cli/libraries/ArduinoJson_6.x/ArduinoJson/Array/Utilities.hpp

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+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Array/ArrayRef.hpp>
+#include <ArduinoJson/Document/JsonDocument.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+// Copy a 1D array to a JsonArray
+template <typename T, size_t N, typename TDestination>
+inline typename enable_if<!is_array<T>::value &&
+                              !is_base_of<JsonDocument, TDestination>::value,
+                          bool>::type
+copyArray(T (&src)[N], const TDestination& dst) {
+  return copyArray(src, N, dst);
+}
+
+// Copy a 1D array to a JsonDocument
+template <typename T, size_t N>
+inline bool copyArray(T (&src)[N], JsonDocument& dst) {
+  return copyArray(src, dst.to<ArrayRef>());
+}
+
+// Copy a 1D array to a JsonArray
+template <typename T, typename TDestination>
+inline typename enable_if<!is_array<T>::value &&
+                              !is_base_of<JsonDocument, TDestination>::value,
+                          bool>::type
+copyArray(T* src, size_t len, const TDestination& dst) {
+  bool ok = true;
+  for (size_t i = 0; i < len; i++) {
+    ok &= dst.add(src[i]);
+  }
+  return ok;
+}
+
+// Copy a 1D array to a JsonDocument
+template <typename T>
+inline bool copyArray(T* src, size_t len, JsonDocument& dst) {
+  return copyArray(src, len, dst.to<ArrayRef>());
+}
+
+// Copy a 2D array to a JsonArray
+template <typename T, size_t N1, size_t N2, typename TDestination>
+inline typename enable_if<!is_base_of<JsonDocument, TDestination>::value,
+                          bool>::type
+copyArray(T (&src)[N1][N2], const TDestination& dst) {
+  bool ok = true;
+  for (size_t i = 0; i < N1; i++) {
+    ArrayRef nestedArray = dst.createNestedArray();
+    for (size_t j = 0; j < N2; j++) {
+      ok &= nestedArray.add(src[i][j]);
+    }
+  }
+  return ok;
+}
+
+// Copy a 2D array to a JsonDocument
+template <typename T, size_t N1, size_t N2>
+inline bool copyArray(T (&src)[N1][N2], JsonDocument& dst) {
+  return copyArray(src, dst.to<ArrayRef>());
+}
+
+template <typename T>
+class ArrayCopier1D : public Visitor<size_t> {
+ public:
+  ArrayCopier1D(T* destination, size_t capacity)
+      : _destination(destination), _capacity(capacity) {}
+
+  size_t visitArray(const CollectionData& array) {
+    size_t size = 0;
+    VariantSlot* slot = array.head();
+
+    while (slot != 0 && size < _capacity) {
+      _destination[size++] = variantAs<T>(slot->data());
+      slot = slot->next();
+    }
+    return size;
+  }
+
+  size_t visitObject(const CollectionData&) {
+    return 0;
+  }
+
+  size_t visitFloat(Float) {
+    return 0;
+  }
+
+  size_t visitString(const char*) {
+    return 0;
+  }
+
+  size_t visitRawJson(const char*, size_t) {
+    return 0;
+  }
+
+  size_t visitNegativeInteger(UInt) {
+    return 0;
+  }
+
+  size_t visitPositiveInteger(UInt) {
+    return 0;
+  }
+
+  size_t visitBoolean(bool) {
+    return 0;
+  }
+
+  size_t visitNull() {
+    return 0;
+  }
+
+ private:
+  T* _destination;
+  size_t _capacity;
+};
+
+template <typename T, size_t N1, size_t N2>
+class ArrayCopier2D : public Visitor<void> {
+ public:
+  ArrayCopier2D(T (*destination)[N1][N2]) : _destination(destination) {}
+
+  void visitArray(const CollectionData& array) {
+    VariantSlot* slot = array.head();
+    size_t n = 0;
+    while (slot != 0 && n < N1) {
+      ArrayCopier1D<T> copier((*_destination)[n++], N2);
+      variantAccept(slot->data(), copier);
+      slot = slot->next();
+    }
+  }
+  void visitObject(const CollectionData&) {}
+  void visitFloat(Float) {}
+  void visitString(const char*) {}
+  void visitRawJson(const char*, size_t) {}
+  void visitNegativeInteger(UInt) {}
+  void visitPositiveInteger(UInt) {}
+  void visitBoolean(bool) {}
+  void visitNull() {}
+
+ private:
+  T (*_destination)[N1][N2];
+  size_t _capacity1, _capacity2;
+};
+
+// Copy a JsonArray to a 1D array
+template <typename TSource, typename T, size_t N>
+inline typename enable_if<!is_array<T>::value, size_t>::type copyArray(
+    const TSource& src, T (&dst)[N]) {
+  return copyArray(src, dst, N);
+}
+
+// Copy a JsonArray to a 1D array
+template <typename TSource, typename T>
+inline size_t copyArray(const TSource& src, T* dst, size_t len) {
+  ArrayCopier1D<T> copier(dst, len);
+
+  return src.accept(copier);
+}
+
+// Copy a JsonArray to a 2D array
+template <typename TSource, typename T, size_t N1, size_t N2>
+inline void copyArray(const TSource& src, T (&dst)[N1][N2]) {
+  ArrayCopier2D<T, N1, N2> copier(&dst);
+  src.accept(copier);
+}
+
+}  // namespace ARDUINOJSON_NAMESPACE