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arduino-cli/libraries/json-streaming-parser/JsonStreamingParser.h

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+/**The MIT License (MIT)
+
+Copyright (c) 2015 by Daniel Eichhorn
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+See more at http://blog.squix.ch and https://github.com/squix78/json-streaming-parser
+*/
+
+#pragma once
+
+#include <Arduino.h>
+#include "JsonListener.h"
+
+#define STATE_START_DOCUMENT     0
+#define STATE_DONE               -1
+#define STATE_IN_ARRAY           1
+#define STATE_IN_OBJECT          2
+#define STATE_END_KEY            3
+#define STATE_AFTER_KEY          4
+#define STATE_IN_STRING          5
+#define STATE_START_ESCAPE       6
+#define STATE_UNICODE            7
+#define STATE_IN_NUMBER          8
+#define STATE_IN_TRUE            9
+#define STATE_IN_FALSE           10
+#define STATE_IN_NULL            11
+#define STATE_AFTER_VALUE        12
+#define STATE_UNICODE_SURROGATE  13
+
+#define STACK_OBJECT             0
+#define STACK_ARRAY              1
+#define STACK_KEY                2
+#define STACK_STRING             3
+
+#define BUFFER_MAX_LENGTH  512
+
+class JsonStreamingParser {
+  private:
+
+
+    int state;
+    int stack[20];
+    int stackPos = 0;
+    JsonListener* myListener;
+
+    boolean doEmitWhitespace = false;
+    // fixed length buffer array to prepare for c code
+    char buffer[BUFFER_MAX_LENGTH];
+    int bufferPos = 0;
+
+    char unicodeEscapeBuffer[10];
+    int unicodeEscapeBufferPos = 0;
+
+    char unicodeBuffer[10];
+    int unicodeBufferPos = 0;
+
+    int characterCounter = 0;
+
+    int unicodeHighSurrogate = 0;
+
+    void increaseBufferPointer();
+
+    void endString();
+
+    void endArray();
+
+    void startValue(char c);
+
+    void startKey();
+
+    void processEscapeCharacters(char c);
+
+    boolean isDigit(char c);
+
+    boolean isHexCharacter(char c);
+
+    char convertCodepointToCharacter(int num);
+
+    void endUnicodeCharacter(int codepoint);
+
+    void startNumber(char c);
+
+    void startString();
+
+    void startObject();
+
+    void startArray();
+
+    void endNull();
+
+    void endFalse();
+
+    void endTrue();
+
+    void endDocument();
+
+    int convertDecimalBufferToInt(char myArray[], int length);
+
+    void endNumber();
+
+    void endUnicodeSurrogateInterstitial();
+
+    boolean doesCharArrayContain(char myArray[], int length, char c);
+
+    int getHexArrayAsDecimal(char hexArray[], int length);
+
+    void processUnicodeCharacter(char c);
+
+    void endObject();
+
+
+
+  public:
+    JsonStreamingParser();
+    void parse(char c);
+    void setListener(JsonListener* listener);
+    void reset();
+};