JSON * JSON::parse_array(Lexer *lexer)
{
JSON *array = new_array();
unsigned int index = 0;
if (lexer->end_of_array())
return array; // empty array
for (;;)
{
JSON *item = parse_private(lexer);
if (item)
array->insert_array_item(index++, item);
else
{
Serial.println(F("missing array item"));
break;
}
Json_Token token = lexer->get_token();
if (token == Array_stop_token)
return array;
if (token != Comma_token)
break;
}
Serial.println(F("JSON syntax error in array"));
return null;
}
JSON * JSON::parse(const char *src, Names *table)
{
Lexer lexer;
lexer.src = src;
lexer.length = Strings::strlen(src);
lexer.table = table;
return parse_private(&lexer);
}
JSON * JSON::parse(const __FlashStringHelper *src, Names *table)
{
Lexer lexer;
lexer.src = ((char *)src)+PROGMEM_BOUNDARY;
lexer.length = Strings::strlen(lexer.src);
lexer.table = table;
return parse_private(&lexer);
}
JSON * JSON::parse(const char *src, unsigned int length, Names *names)
{
Lexer lexer;
lexer.src = (unsigned char *)src;
lexer.length = length;
lexer.names = names;
#ifdef DEBUG
PRINT(F("parsing ")); PRINTLN(src);
#endif
return parse_private(&lexer);
}
JSON * JSON::parse_object(Lexer *lexer)
{
unsigned int symcount = JSON_SYMBOL_BASE;
JSON *object = new_object();
Json_Token token = lexer->get_token();
while (token != Error_token)
{
if (token == Object_stop_token)
return object;
if (token != String_token)
break;
unsigned int symbol = lexer->names->get_symbol(lexer->token_src,
lexer->token_len, &symcount);
token = lexer->get_token();
if (token != Colon_token)
break;
JSON *value = parse_private(lexer);
if (!value)
break;
object->insert_property(symbol, value);
token = lexer->get_token();
if (token == Object_stop_token)
continue;
if (token != Comma_token)
break;
token = lexer->get_token();
}
// free incomplete object here along with its map from symbols to values
#ifdef DEBUG
PRINT(F("JSON syntax error in object, token is ")); PRINTLN(token);
#endif
return null;
}
JSON * JSON::parse_object(Lexer *lexer)
{
JSON *object = new_object();
Json_Token token = lexer->get_token();
while (token != Error_token)
{
if (token == Object_stop_token)
return object;
if (token != String_token)
break;
Symbol symbol = lexer->table->symbol(lexer->token_src,
lexer->token_len);
token = lexer->get_token();
if (token != Colon_token)
break;
JSON *value = parse_private(lexer);
if (!value)
break;
object->insert_property(symbol, value);
token = lexer->get_token();
if (token == Object_stop_token)
continue;
if (token != Comma_token)
break;
token = lexer->get_token();
}
// free incomplete object here along with its map from symbols to values
Serial.print(F("JSON syntax error in object, token is ")); Serial.println(token);
return null;
}
