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Extracted StringReader and StringWriter from JsonParser

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Split `Internals/` folder into `Data/`, `Deserialization/`, `Serialization/`
This commit is contained in:
Benoit Blanchon
2016-12-21 22:09:13 +01:00
parent b923e8f4df
commit 8032a4b564
44 changed files with 230 additions and 132 deletions
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121
include/ArduinoJson/Data/StringFuncs.hpp Normal file
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// Copyright Benoit Blanchon 2014-2016
// MIT License
//
// Arduino JSON library
// https://github.com/bblanchon/ArduinoJson
// If you like this project, please add a star!
#pragma once
#include "../Configuration.hpp"
#if ARDUINOJSON_ENABLE_ARDUINO_STRING
#include <WString.h>
#endif
#if ARDUINOJSON_ENABLE_STD_STRING
#include <string>
#endif
namespace ArduinoJson {
namespace Internals {
template <typename TString>
struct StringFuncs {};
template <typename TString>
struct StringFuncs<const TString> : StringFuncs<TString> {};
template <typename TString>
struct StringFuncs<TString&> : StringFuncs<TString> {};
struct CharPtrFuncs {
static bool equals(const char* str, const char* expected) {
return strcmp(str, expected) == 0;
}
template <typename Buffer>
static char* duplicate(const char* str, Buffer* buffer) {
if (!str) return NULL;
size_t size = strlen(str) + 1;
void* dup = buffer->alloc(size);
if (dup != NULL) memcpy(dup, str, size);
return static_cast<char*>(dup);
}
static const bool has_append = false;
static const bool has_equals = true;
static const bool should_duplicate = false;
};
template <>
struct StringFuncs<const char*> : CharPtrFuncs {};
template <>
struct StringFuncs<char*> : CharPtrFuncs {};
template <size_t N>
struct StringFuncs<char[N]> : CharPtrFuncs {};
template <size_t N>
struct StringFuncs<const char[N]> : CharPtrFuncs {};
template <typename TString>
struct StdStringFuncs {
template <typename Buffer>
static char* duplicate(const TString& str, Buffer* buffer) {
if (!str.c_str()) return NULL; // <- Arduino string can return NULL
size_t size = str.length() + 1;
void* dup = buffer->alloc(size);
if (dup != NULL) memcpy(dup, str.c_str(), size);
return static_cast<char*>(dup);
}
static bool equals(const TString& str, const char* expected) {
return str == expected;
}
static void append(TString& str, char c) {
str += c;
}
static const bool has_append = true;
static const bool has_equals = true;
static const bool should_duplicate = true;
};
#if ARDUINOJSON_ENABLE_ARDUINO_STRING
template <>
struct StringFuncs<String> : StdStringFuncs<String> {};
template <>
struct StringFuncs<StringSumHelper> : StdStringFuncs<StringSumHelper> {};
#endif
#if ARDUINOJSON_ENABLE_STD_STRING
template <>
struct StringFuncs<std::string> : StdStringFuncs<std::string> {};
#endif
#if ARDUINOJSON_ENABLE_PROGMEM
template <>
struct StringFuncs<const __FlashStringHelper*> {
static bool equals(const __FlashStringHelper* str, const char* expected) {
return strcmp_P(expected, (PGM_P)str) == 0;
}
template <typename Buffer>
static char* duplicate(const __FlashStringHelper* str, Buffer* buffer) {
if (!str) return NULL;
size_t size = strlen_P((PGM_P)str) + 1;
void* dup = buffer->alloc(size);
if (dup != NULL) memcpy_P(dup, (PGM_P)str, size);
return static_cast<char*>(dup);
}
static const bool has_append = false;
static const bool has_equals = true;
static const bool should_duplicate = true;
};
#endif
}
}