1 files changed, 44 insertions, 0 deletions
diff --git a/include/lib/ArduinoJson/Strings/FlashStringIterator.hpp b/include/lib/ArduinoJson/Strings/FlashStringIterator.hpp
new file mode 100644
index 0000000..9a97f32
--- /dev/null
+++ b/include/lib/ArduinoJson/Strings/FlashStringIterator.hpp
@@ -0,0 +1,44 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright Benoit Blanchon 2014-2021
+// MIT License
+
+#pragma once
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class FlashStringIterator {
+ public:
+  explicit FlashStringIterator(const __FlashStringHelper* ptr)
+      : _ptr(reinterpret_cast<const char*>(ptr)) {}
+
+  explicit FlashStringIterator(const char* ptr) : _ptr(ptr) {}
+
+  FlashStringIterator operator+(ptrdiff_t d) const {
+    return FlashStringIterator(_ptr + d);
+  }
+
+  ptrdiff_t operator-(FlashStringIterator other) const {
+    return _ptr - other._ptr;
+  }
+
+  FlashStringIterator operator++(int) {
+    return FlashStringIterator(_ptr++);
+  }
+
+  FlashStringIterator operator++() {
+    return FlashStringIterator(++_ptr);
+  }
+
+  bool operator!=(FlashStringIterator other) const {
+    return _ptr != other._ptr;
+  }
+
+  char operator*() const {
+    return char(pgm_read_byte(_ptr));
+  }
+
+ private:
+  const char* _ptr;
+};
+
+}  // namespace ARDUINOJSON_NAMESPACE