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Benoît Blanchon
2014-07-03 13:54:27 +02:00
parent 538b15b400
commit bae5c36f41
12 changed files with 248 additions and 212 deletions
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99
JsonGenerator/JsonArray.h
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@ -8,59 +8,64 @@
#include "JsonObjectBase.h"
#include "StringBuilder.h"
template<int N>
class JsonArray : public JsonObjectBase
namespace ArduinoJson
{
public:
JsonArray()
namespace Generator
{
itemCount = 0;
}
template<typename T>
void add(T value)
{
add(JsonValue(value));
}
void add(double value, int digits=2)
{
add(JsonValue(value, digits));
}
void add(JsonValue value)
{
if (itemCount >= N) return;
items[itemCount] = value;
itemCount++;
}
using JsonObjectBase::printTo;
private:
JsonValue items[N];
int itemCount;
virtual size_t printTo(Print& p) const
{
size_t n = 0;
n += p.write('[');
for (int i = 0; i < itemCount; i++)
template<int N>
class JsonArray : public JsonObjectBase
{
if (i > 0)
public:
JsonArray()
{
n += p.write(',');
itemCount = 0;
}
n += items[i].printTo(p);
}
template<typename T>
void add(T value)
{
add(JsonValue(value));
}
n += p.write(']');
void add(double value, int digits = 2)
{
add(JsonValue(value, digits));
}
return n;
void add(JsonValue value)
{
if (itemCount >= N) return;
items[itemCount] = value;
itemCount++;
}
using JsonObjectBase::printTo;
private:
JsonValue items[N];
int itemCount;
virtual size_t printTo(Print& p) const
{
size_t n = 0;
n += p.write('[');
for (int i = 0; i < itemCount; i++)
{
if (i > 0)
{
n += p.write(',');
}
n += items[i].printTo(p);
}
n += p.write(']');
return n;
}
};
}
};
}

123
JsonGenerator/JsonHashTable.h
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@ -7,72 +7,77 @@
#include "JsonObjectBase.h"
template<int N>
class JsonHashTable : public JsonObjectBase
namespace ArduinoJson
{
public:
JsonHashTable()
namespace Generator
{
itemCount = 0;
}
template<typename T>
void add(const char* key, T value)
{
add(key, JsonValue(value));
}
void add(const char* key, double value, int digits=2)
{
add(key, JsonValue(value, digits));
}
void add(const char* key, JsonValue value)
{
if (itemCount >= N) return;
items[itemCount].key = key;
items[itemCount].value = value;
itemCount++;
}
using JsonObjectBase::printTo;
private:
struct KeyValuePair
{
const char* key;
JsonValue value;
};
KeyValuePair items[N];
int itemCount;
virtual size_t printTo(Print& p) const
{
size_t n = 0;
n += p.write('{');
for (int i = 0; i < itemCount; i++)
template<int N>
class JsonHashTable : public JsonObjectBase
{
JsonValue key(items[i].key);
public:
if (i > 0)
JsonHashTable()
{
n += p.write(',');
itemCount = 0;
}
n += key.printTo(p);
n += p.write(':');
n += items[i].value.printTo(p);
}
template<typename T>
void add(const char* key, T value)
{
add(key, JsonValue(value));
}
n += p.write('}');
void add(const char* key, double value, int digits = 2)
{
add(key, JsonValue(value, digits));
}
return n;
void add(const char* key, JsonValue value)
{
if (itemCount >= N) return;
items[itemCount].key = key;
items[itemCount].value = value;
itemCount++;
}
using JsonObjectBase::printTo;
private:
struct KeyValuePair
{
const char* key;
JsonValue value;
};
KeyValuePair items[N];
int itemCount;
virtual size_t printTo(Print& p) const
{
size_t n = 0;
n += p.write('{');
for (int i = 0; i < itemCount; i++)
{
JsonValue key(items[i].key);
if (i > 0)
{
n += p.write(',');
}
n += key.printTo(p);
n += p.write(':');
n += items[i].value.printTo(p);
}
n += p.write('}');
return n;
}
};
}
};
}

25
JsonGenerator/JsonObjectBase.h
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@ -9,16 +9,21 @@
#include "Print.h"
#include "Printable.h"
class JsonObjectBase : public Printable
namespace ArduinoJson
{
public:
size_t printTo(char* buffer, size_t bufferSize)
namespace Generator
{
StringBuilder sb(buffer, bufferSize);
return printTo(sb);
class JsonObjectBase : public Printable
{
public:
size_t printTo(char* buffer, size_t bufferSize)
{
StringBuilder sb(buffer, bufferSize);
return printTo(sb);
}
virtual size_t printTo(Print& p) const = 0;
};
}
virtual size_t printTo(Print& p) const = 0;
};
}

2
JsonGenerator/JsonValue.cpp
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@ -5,6 +5,8 @@
#include "JsonValue.h"
using namespace ArduinoJson::Generator;
size_t JsonValue::printBoolTo(Print& p) const
{
return p.print(content.asBool ? "true" : "false");

168
JsonGenerator/JsonValue.h
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@ -8,87 +8,93 @@
#include "Printable.h"
#include "StringBuilder.h"
class JsonValue : public Printable
namespace ArduinoJson
{
public:
JsonValue()
namespace Generator
{
class JsonValue : public Printable
{
public:
JsonValue()
{
}
JsonValue(bool value)
: implementation(&JsonValue::printBoolTo)
{
content.asBool = value;
}
JsonValue(double value, int digits = 2)
: implementation(&JsonValue::printDoubleTo)
{
content.asDouble.value = value;
content.asDouble.digits = digits;
}
JsonValue(float value)
: implementation(&JsonValue::printFloatTo)
{
content.asFloat = value;
}
JsonValue(long value)
: implementation(&JsonValue::printLongTo)
{
content.asLong = value;
}
JsonValue(int value)
: implementation(&JsonValue::printLongTo)
{
content.asLong = value;
}
JsonValue(Printable& value)
: implementation(&JsonValue::printPrintableTo)
{
content.asPrintable = &value;
}
JsonValue(const char* value)
: implementation(&JsonValue::printStringTo)
{
content.asString = value;
}
virtual size_t printTo(Print& p) const
{
// handmade polymorphism
return (this->*implementation)(p);
}
private:
union Content
{
bool asBool;
float asFloat;
long asLong;
Printable* asPrintable;
const char* asString;
struct {
double value;
int digits;
} asDouble;
};
Content content;
size_t(JsonValue::*implementation)(Print& p)const;
size_t printBoolTo(Print& p) const;
size_t printDoubleTo(Print& p) const;
size_t printFloatTo(Print& p) const;
size_t printLongTo(Print& p) const;
size_t printPrintableTo(Print& p) const;
size_t printStringTo(Print& p) const;
};
}
JsonValue(bool value)
: implementation(&JsonValue::printBoolTo)
{
content.asBool = value;
}
JsonValue(double value, int digits=2)
: implementation(&JsonValue::printDoubleTo)
{
content.asDouble.value = value;
content.asDouble.digits = digits;
}
JsonValue(float value)
: implementation(&JsonValue::printFloatTo)
{
content.asFloat = value;
}
JsonValue(long value)
: implementation(&JsonValue::printLongTo)
{
content.asLong = value;
}
JsonValue(int value)
: implementation(&JsonValue::printLongTo)
{
content.asLong = value;
}
JsonValue(Printable& value)
: implementation(&JsonValue::printPrintableTo)
{
content.asPrintable = &value;
}
JsonValue(const char* value)
: implementation(&JsonValue::printStringTo)
{
content.asString = value;
}
virtual size_t printTo(Print& p) const
{
// handmade polymorphism
return (this->*implementation)(p);
}
private:
union Content
{
bool asBool;
float asFloat;
long asLong;
Printable* asPrintable;
const char* asString;
struct {
double value;
int digits;
} asDouble;
};
Content content;
size_t(JsonValue::*implementation)(Print& p)const;
size_t printBoolTo(Print& p) const;
size_t printDoubleTo(Print& p) const;
size_t printFloatTo(Print& p) const;
size_t printLongTo(Print& p) const;
size_t printPrintableTo(Print& p) const;
size_t printStringTo(Print& p) const;
};
}

2
JsonGenerator/StringBuilder.cpp
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@ -5,6 +5,8 @@
#include "StringBuilder.h"
using namespace ArduinoJson::Generator;
size_t StringBuilder::write(uint8_t c)
{
if (length >= capacity) return 0;

33
JsonGenerator/StringBuilder.h
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@ -7,20 +7,25 @@
#include "Print.h"
class StringBuilder : public Print
namespace ArduinoJson
{
public:
StringBuilder(char* buf, int size)
: buffer(buf), capacity(size-1), length(0)
namespace Generator
{
buffer[0] = 0;
class StringBuilder : public Print
{
public:
StringBuilder(char* buf, int size)
: buffer(buf), capacity(size - 1), length(0)
{
buffer[0] = 0;
}
virtual size_t write(uint8_t c);
private:
char* buffer;
int capacity;
int length;
};
}
virtual size_t write(uint8_t c);
private:
char* buffer;
int capacity;
int length;
};
}

1
JsonGeneratorTests/JsonArrayTests.cpp
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@ -3,6 +3,7 @@
#include "JsonHashTable.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
using namespace ArduinoJson::Generator;
namespace JsonGeneratorTests
{

1
JsonGeneratorTests/JsonHashTableTests.cpp
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@ -3,6 +3,7 @@
#include "JsonHashTable.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
using namespace ArduinoJson::Generator;
namespace JsonGeneratorTests
{

1
JsonGeneratorTests/JsonValueTests.cpp
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@ -3,6 +3,7 @@
#include "JsonValue.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
using namespace ArduinoJson::Generator;
namespace JsonGeneratorTests
{

1
JsonGeneratorTests/StringBuilderTests.cpp
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@ -2,6 +2,7 @@
#include "StringBuilder.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
using namespace ArduinoJson::Generator;
namespace JsonGeneratorTests
{

2
examples/JsonGeneratorExample/JsonGeneratorExample.ino
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@ -5,6 +5,8 @@
#include <JsonGenerator.h>
using namespace ArduinoJson::Generator;
void setup()
{
Serial.begin(9600);