Xin Zhang
/
azure-iot-c-sdk-f767zi
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serializer/src/jsondecoder.c@0:f7f1f0d76dd6, 2018-08-23 (annotated)
- Committer:
- XinZhangMS
- Date:
- Thu Aug 23 06:52:14 2018 +0000
- Revision:
- 0:f7f1f0d76dd6
azure-c-sdk for mbed os supporting NUCLEO_F767ZI
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| XinZhangMS | 0:f7f1f0d76dd6 | 1 | // Copyright (c) Microsoft. All rights reserved. |
| XinZhangMS | 0:f7f1f0d76dd6 | 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information. |
| XinZhangMS | 0:f7f1f0d76dd6 | 3 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 4 | #include "azure_c_shared_utility/gballoc.h" |
| XinZhangMS | 0:f7f1f0d76dd6 | 5 | #include "azure_c_shared_utility/crt_abstractions.h" |
| XinZhangMS | 0:f7f1f0d76dd6 | 6 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 7 | #include "jsondecoder.h" |
| XinZhangMS | 0:f7f1f0d76dd6 | 8 | #include <stdio.h> |
| XinZhangMS | 0:f7f1f0d76dd6 | 9 | #include <string.h> |
| XinZhangMS | 0:f7f1f0d76dd6 | 10 | #include <ctype.h> |
| XinZhangMS | 0:f7f1f0d76dd6 | 11 | #include <stddef.h> |
| XinZhangMS | 0:f7f1f0d76dd6 | 12 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 13 | #define IsWhiteSpace(A) (((A) == 0x20) || ((A) == 0x09) || ((A) == 0x0A) || ((A) == 0x0D)) |
| XinZhangMS | 0:f7f1f0d76dd6 | 14 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 15 | typedef struct PARSER_STATE_TAG |
| XinZhangMS | 0:f7f1f0d76dd6 | 16 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 17 | char* json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 18 | } PARSER_STATE; |
| XinZhangMS | 0:f7f1f0d76dd6 | 19 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 20 | static JSON_DECODER_RESULT ParseArray(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 21 | static JSON_DECODER_RESULT ParseObject(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 22 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 23 | /* Codes_SRS_JSON_DECODER_99_049:[ JSONDecoder shall not allocate new string values for the leafs, but rather point to strings in the original JSON.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 24 | static void NoFreeFunction(void* value) |
| XinZhangMS | 0:f7f1f0d76dd6 | 25 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 26 | (void)value; |
| XinZhangMS | 0:f7f1f0d76dd6 | 27 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 28 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 29 | static int NOPCloneFunction(void** destination, const void* source) |
| XinZhangMS | 0:f7f1f0d76dd6 | 30 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 31 | *destination = (void**)source; |
| XinZhangMS | 0:f7f1f0d76dd6 | 32 | return 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 33 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 34 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 35 | void SkipWhiteSpaces(PARSER_STATE* parserState) |
| XinZhangMS | 0:f7f1f0d76dd6 | 36 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 37 | while ((*(parserState->json) != '\0') && IsWhiteSpace(*(parserState->json))) |
| XinZhangMS | 0:f7f1f0d76dd6 | 38 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 39 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 40 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 41 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 42 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 43 | static JSON_DECODER_RESULT ParseString(PARSER_STATE* parserState, char** stringBegin) |
| XinZhangMS | 0:f7f1f0d76dd6 | 44 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 45 | JSON_DECODER_RESULT result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 46 | *stringBegin = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 47 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 48 | /* Codes_SRS_JSON_DECODER_99_028:[ A string begins and ends with quotation marks.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 49 | if (*(parserState->json) != '"') |
| XinZhangMS | 0:f7f1f0d76dd6 | 50 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 51 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 52 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 53 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 54 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 55 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 56 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 57 | while ((*(parserState->json) != '"') && (*(parserState->json) != '\0')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 58 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 59 | /* Codes_SRS_JSON_DECODER_99_030:[ Any character may be escaped.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 60 | /* Codes_SRS_JSON_DECODER_99_033:[ Alternatively, there are two-character sequence escape representations of some popular characters. So, for example, a string containing only a single reverse solidus character may be represented more compactly as "\\".] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 61 | if (*(parserState->json) == '\\') |
| XinZhangMS | 0:f7f1f0d76dd6 | 62 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 63 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 64 | if ( |
| XinZhangMS | 0:f7f1f0d76dd6 | 65 | /* Codes_SRS_JSON_DECODER_99_051:[ %x5C / ; \ reverse solidus U+005C] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 66 | (*parserState->json == '\\') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 67 | /* Codes_SRS_JSON_DECODER_99_050:[ %x22 / ; " quotation mark U+0022] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 68 | (*parserState->json == '"') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 69 | /* Codes_SRS_JSON_DECODER_99_052:[ %x2F / ; / solidus U+002F] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 70 | (*parserState->json == '/') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 71 | /* Codes_SRS_JSON_DECODER_99_053:[ %x62 / ; b backspace U+0008] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 72 | (*parserState->json == 'b') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 73 | /* Codes_SRS_JSON_DECODER_99_054:[ %x66 / ; f form feed U+000C] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 74 | (*parserState->json == 'f') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 75 | /* Codes_SRS_JSON_DECODER_99_055:[ %x6E / ; n line feed U+000A] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 76 | (*parserState->json == 'n') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 77 | /* Codes_SRS_JSON_DECODER_99_056:[ %x72 / ; r carriage return U+000D] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 78 | (*parserState->json == 'r') || |
| XinZhangMS | 0:f7f1f0d76dd6 | 79 | /* Codes_SRS_JSON_DECODER_99_057:[ %x74 / ; t tab U+0009] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 80 | (*parserState->json == 't')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 81 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 82 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 83 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 84 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 85 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 86 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 87 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 88 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 89 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 90 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 91 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 92 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 93 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 94 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 95 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 96 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 97 | if (*(parserState->json) != '"') |
| XinZhangMS | 0:f7f1f0d76dd6 | 98 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 99 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 100 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 101 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 102 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 103 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 104 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 105 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 106 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 107 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 108 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 109 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 110 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 111 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 112 | static JSON_DECODER_RESULT ParseNumber(PARSER_STATE* parserState) |
| XinZhangMS | 0:f7f1f0d76dd6 | 113 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 114 | JSON_DECODER_RESULT result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 115 | size_t digitCount = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 116 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 117 | if (*(parserState->json) == '-') |
| XinZhangMS | 0:f7f1f0d76dd6 | 118 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 119 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 120 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 121 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 122 | /* Codes_SRS_JSON_DECODER_99_043:[ A number contains an integer component that may be prefixed with an optional minus sign, which may be followed by a fraction part and/or an exponent part.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 123 | while (*(parserState->json) != '\0') |
| XinZhangMS | 0:f7f1f0d76dd6 | 124 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 125 | /* Codes_SRS_JSON_DECODER_99_044:[ Octal and hex forms are not allowed.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 126 | if (ISDIGIT(*(parserState->json))) |
| XinZhangMS | 0:f7f1f0d76dd6 | 127 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 128 | digitCount++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 129 | /* simply continue */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 130 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 131 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 132 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 133 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 134 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 135 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 136 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 137 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 138 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 139 | if ((digitCount == 0) || |
| XinZhangMS | 0:f7f1f0d76dd6 | 140 | /* Codes_SRS_JSON_DECODER_99_045:[ Leading zeros are not allowed.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 141 | ((digitCount > 1) && *(parserState->json - digitCount) == '0')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 142 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 143 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 144 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 145 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 146 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 147 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 148 | /* Codes_SRS_JSON_DECODER_99_046:[ A fraction part is a decimal point followed by one or more digits.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 149 | if (*(parserState->json) == '.') |
| XinZhangMS | 0:f7f1f0d76dd6 | 150 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 151 | /* optional fractional part */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 152 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 153 | digitCount = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 154 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 155 | while (*(parserState->json) != '\0') |
| XinZhangMS | 0:f7f1f0d76dd6 | 156 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 157 | /* Codes_SRS_JSON_DECODER_99_044:[ Octal and hex forms are not allowed.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 158 | if (ISDIGIT(*(parserState->json))) |
| XinZhangMS | 0:f7f1f0d76dd6 | 159 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 160 | digitCount++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 161 | /* simply continue */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 162 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 163 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 164 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 165 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 166 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 167 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 168 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 169 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 170 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 171 | if (digitCount == 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 172 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 173 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 174 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 175 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 176 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 177 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 178 | /* Codes_SRS_JSON_DECODER_99_047:[ An exponent part begins with the letter E in upper or lowercase, which may be followed by a plus or minus sign.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 179 | if ((*(parserState->json) == 'e') || (*(parserState->json) == 'E')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 180 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 181 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 182 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 183 | /* optional sign */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 184 | if ((*(parserState->json) == '-') || (*(parserState->json) == '+')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 185 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 186 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 187 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 188 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 189 | digitCount = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 190 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 191 | /* Codes_SRS_JSON_DECODER_99_048:[ The E and optional sign are followed by one or more digits.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 192 | while (*(parserState->json) != '\0') |
| XinZhangMS | 0:f7f1f0d76dd6 | 193 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 194 | /* Codes_SRS_JSON_DECODER_99_044:[ Octal and hex forms are not allowed.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 195 | if (ISDIGIT(*(parserState->json))) |
| XinZhangMS | 0:f7f1f0d76dd6 | 196 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 197 | digitCount++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 198 | /* simply continue */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 199 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 200 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 201 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 202 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 203 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 204 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 205 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 206 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 207 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 208 | if (digitCount == 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 209 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 210 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 211 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 212 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 213 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 214 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 215 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 216 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 217 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 218 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 219 | static JSON_DECODER_RESULT ParseValue(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode, char** stringBegin) |
| XinZhangMS | 0:f7f1f0d76dd6 | 220 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 221 | JSON_DECODER_RESULT result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 222 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 223 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 224 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 225 | if (*(parserState->json) == '"') |
| XinZhangMS | 0:f7f1f0d76dd6 | 226 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 227 | result = ParseString(parserState, stringBegin); |
| XinZhangMS | 0:f7f1f0d76dd6 | 228 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 229 | /* Codes_SRS_JSON_DECODER_99_018:[ A JSON value MUST be an object, array, number, or string, or one of the following three literal names: false null true] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 230 | /* Codes_SRS_JSON_DECODER_99_019:[ The literal names MUST be lowercase.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 231 | /* Codes_SRS_JSON_DECODER_99_020:[ No other literal names are allowed.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 232 | else if (strncmp(parserState->json, "false", 5) == 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 233 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 234 | *stringBegin = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 235 | parserState->json += 5; |
| XinZhangMS | 0:f7f1f0d76dd6 | 236 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 237 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 238 | else if (strncmp(parserState->json, "true", 4) == 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 239 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 240 | *stringBegin = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 241 | parserState->json += 4; |
| XinZhangMS | 0:f7f1f0d76dd6 | 242 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 243 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 244 | else if (strncmp(parserState->json, "null", 4) == 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 245 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 246 | *stringBegin = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 247 | parserState->json += 4; |
| XinZhangMS | 0:f7f1f0d76dd6 | 248 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 249 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 250 | /* Tests_SRS_JSON_DECODER_99_018:[ A JSON value MUST be an object, array, number, or string, or one of the following three literal names: false null true] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 251 | else if (*(parserState->json) == '[') |
| XinZhangMS | 0:f7f1f0d76dd6 | 252 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 253 | result = ParseArray(parserState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 254 | *stringBegin = NULL; |
| XinZhangMS | 0:f7f1f0d76dd6 | 255 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 256 | else if (*(parserState->json) == '{') |
| XinZhangMS | 0:f7f1f0d76dd6 | 257 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 258 | result = ParseObject(parserState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 259 | *stringBegin = NULL; |
| XinZhangMS | 0:f7f1f0d76dd6 | 260 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 261 | else if ( |
| XinZhangMS | 0:f7f1f0d76dd6 | 262 | ( |
| XinZhangMS | 0:f7f1f0d76dd6 | 263 | ISDIGIT(*(parserState->json)) |
| XinZhangMS | 0:f7f1f0d76dd6 | 264 | ) |
| XinZhangMS | 0:f7f1f0d76dd6 | 265 | || (*(parserState->json) == '-')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 266 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 267 | *stringBegin = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 268 | result = ParseNumber(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 269 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 270 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 271 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 272 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 273 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 274 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 275 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 276 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 277 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 278 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 279 | static JSON_DECODER_RESULT ParseColon(PARSER_STATE* parserState) |
| XinZhangMS | 0:f7f1f0d76dd6 | 280 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 281 | JSON_DECODER_RESULT result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 282 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 283 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 284 | /* Codes_SRS_JSON_DECODER_99_023:[ A single colon comes after each name, separating the name from the value.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 285 | if (*(parserState->json) != ':') |
| XinZhangMS | 0:f7f1f0d76dd6 | 286 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 287 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 288 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 289 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 290 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 291 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 292 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 293 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 294 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 295 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 296 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 297 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 298 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 299 | static JSON_DECODER_RESULT ParseOpenCurly(PARSER_STATE* parserState) |
| XinZhangMS | 0:f7f1f0d76dd6 | 300 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 301 | JSON_DECODER_RESULT result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 302 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 303 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 304 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 305 | /* Codes_SRS_JSON_DECODER_99_021:[ An object structure is represented as a pair of curly brackets surrounding zero or more name/value pairs (or members).] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 306 | if (*(parserState->json) != '{') |
| XinZhangMS | 0:f7f1f0d76dd6 | 307 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 308 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 309 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 310 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 311 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 312 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 313 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 314 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 315 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 316 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 317 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 318 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 319 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 320 | static JSON_DECODER_RESULT ParseNameValuePair(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode) |
| XinZhangMS | 0:f7f1f0d76dd6 | 321 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 322 | JSON_DECODER_RESULT result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 323 | char* memberNameBegin; |
| XinZhangMS | 0:f7f1f0d76dd6 | 324 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 325 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 326 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 327 | /* Codes_SRS_JSON_DECODER_99_022:[ A name is a string.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 328 | result = ParseString(parserState, &memberNameBegin); |
| XinZhangMS | 0:f7f1f0d76dd6 | 329 | if (result == JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 330 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 331 | char* valueBegin; |
| XinZhangMS | 0:f7f1f0d76dd6 | 332 | MULTITREE_HANDLE childNode; |
| XinZhangMS | 0:f7f1f0d76dd6 | 333 | *(parserState->json - 1) = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 334 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 335 | result = ParseColon(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 336 | if (result == JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 337 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 338 | /* Codes_SRS_JSON_DECODER_99_025:[ The names within an object SHOULD be unique.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 339 | /* Multi Tree takes care of not having 2 children with the same name */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 340 | /* Codes_SRS_JSON_DECODER_99_002:[ JSONDecoder_JSON_To_MultiTree shall use the MultiTree APIs to create the multi tree and add leafs to the multi tree.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 341 | /* Codes_SRS_JSON_DECODER_99_003:[ When a JSON element is decoded from the JSON object then a leaf shall be added to the MultiTree.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 342 | /* Codes_SRS_JSON_DECODER_99_004:[ The leaf node name in the multi tree shall be the JSON element name.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 343 | if (MultiTree_AddChild(currentNode, memberNameBegin + 1, &childNode) != MULTITREE_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 344 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 345 | /* Codes_SRS_JSON_DECODER_99_038:[ If any MultiTree API fails, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_MULTITREE_FAILED.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 346 | result = JSON_DECODER_MULTITREE_FAILED; |
| XinZhangMS | 0:f7f1f0d76dd6 | 347 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 348 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 349 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 350 | result = ParseValue(parserState, childNode, &valueBegin); |
| XinZhangMS | 0:f7f1f0d76dd6 | 351 | if ((result == JSON_DECODER_OK) && (valueBegin != NULL)) |
| XinZhangMS | 0:f7f1f0d76dd6 | 352 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 353 | /* Codes_SRS_JSON_DECODER_99_005:[ The leaf node added in the multi tree shall have the value the string value of the JSON element as parsed from the JSON object.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 354 | if (MultiTree_SetValue(childNode, valueBegin) != MULTITREE_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 355 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 356 | /* Codes_SRS_JSON_DECODER_99_038:[ If any MultiTree API fails, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_MULTITREE_FAILED.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 357 | result = JSON_DECODER_MULTITREE_FAILED; |
| XinZhangMS | 0:f7f1f0d76dd6 | 358 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 359 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 360 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 361 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 362 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 363 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 364 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 365 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 366 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 367 | static JSON_DECODER_RESULT ParseObject(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode) |
| XinZhangMS | 0:f7f1f0d76dd6 | 368 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 369 | JSON_DECODER_RESULT result = ParseOpenCurly(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 370 | if (result == JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 371 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 372 | char jsonChar; |
| XinZhangMS | 0:f7f1f0d76dd6 | 373 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 374 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 375 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 376 | jsonChar = *(parserState->json); |
| XinZhangMS | 0:f7f1f0d76dd6 | 377 | while ((jsonChar != '}') && (jsonChar != '\0')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 378 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 379 | char* valueEnd; |
| XinZhangMS | 0:f7f1f0d76dd6 | 380 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 381 | /* decode each value */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 382 | result = ParseNameValuePair(parserState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 383 | if (result != JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 384 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 385 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 386 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 387 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 388 | valueEnd = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 389 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 390 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 391 | jsonChar = *(parserState->json); |
| XinZhangMS | 0:f7f1f0d76dd6 | 392 | *valueEnd = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 393 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 394 | /* Codes_SRS_JSON_DECODER_99_024:[ A single comma separates a value from a following name.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 395 | if (jsonChar == ',') |
| XinZhangMS | 0:f7f1f0d76dd6 | 396 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 397 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 398 | /* get the next name/value pair */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 399 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 400 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 401 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 402 | if (result != JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 403 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 404 | /* already have error */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 405 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 406 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 407 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 408 | if (jsonChar != '}') |
| XinZhangMS | 0:f7f1f0d76dd6 | 409 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 410 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 411 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 412 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 413 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 414 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 415 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 416 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 417 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 418 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 419 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 420 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 421 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 422 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 423 | static JSON_DECODER_RESULT ParseArray(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode) |
| XinZhangMS | 0:f7f1f0d76dd6 | 424 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 425 | JSON_DECODER_RESULT result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 426 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 427 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 428 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 429 | /* Codes_SRS_JSON_DECODER_99_026:[ An array structure is represented as square brackets surrounding zero or more values (or elements).] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 430 | if (*(parserState->json) != '[') |
| XinZhangMS | 0:f7f1f0d76dd6 | 431 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 432 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 433 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 434 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 435 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 436 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 437 | char* stringBegin; |
| XinZhangMS | 0:f7f1f0d76dd6 | 438 | char jsonChar; |
| XinZhangMS | 0:f7f1f0d76dd6 | 439 | int arrayIndex = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 440 | result = JSON_DECODER_OK; |
| XinZhangMS | 0:f7f1f0d76dd6 | 441 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 442 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 443 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 444 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 445 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 446 | jsonChar = *parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 447 | while ((jsonChar != ']') && (jsonChar != '\0')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 448 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 449 | char arrayIndexStr[22]; |
| XinZhangMS | 0:f7f1f0d76dd6 | 450 | MULTITREE_HANDLE childNode; |
| XinZhangMS | 0:f7f1f0d76dd6 | 451 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 452 | /* Codes_SRS_JSON_DECODER_99_039:[ For array elements the multi tree node name shall be the string representation of the array index.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 453 | if (sprintf(arrayIndexStr, "%d", arrayIndex++) < 0) |
| XinZhangMS | 0:f7f1f0d76dd6 | 454 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 455 | result = JSON_DECODER_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 456 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 457 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 458 | /* Codes_SRS_JSON_DECODER_99_003:[ When a JSON element is decoded from the JSON object then a leaf shall be added to the MultiTree.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 459 | else if (MultiTree_AddChild(currentNode, arrayIndexStr, &childNode) != MULTITREE_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 460 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 461 | /* Codes_SRS_JSON_DECODER_99_038:[ If any MultiTree API fails, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_MULTITREE_FAILED.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 462 | result = JSON_DECODER_MULTITREE_FAILED; |
| XinZhangMS | 0:f7f1f0d76dd6 | 463 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 464 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 465 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 466 | char* valueEnd; |
| XinZhangMS | 0:f7f1f0d76dd6 | 467 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 468 | /* decode each value */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 469 | result = ParseValue(parserState, childNode, &stringBegin); |
| XinZhangMS | 0:f7f1f0d76dd6 | 470 | if (result != JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 471 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 472 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 473 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 474 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 475 | if (stringBegin != NULL) |
| XinZhangMS | 0:f7f1f0d76dd6 | 476 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 477 | /* Codes_SRS_JSON_DECODER_99_005:[ The leaf node added in the multi tree shall have the value the string value of the JSON element as parsed from the JSON object.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 478 | if (MultiTree_SetValue(childNode, stringBegin) != MULTITREE_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 479 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 480 | /* Codes_SRS_JSON_DECODER_99_038:[ If any MultiTree API fails, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_MULTITREE_FAILED.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 481 | result = JSON_DECODER_MULTITREE_FAILED; |
| XinZhangMS | 0:f7f1f0d76dd6 | 482 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 483 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 484 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 485 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 486 | valueEnd = parserState->json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 487 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 488 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 489 | jsonChar = *(parserState->json); |
| XinZhangMS | 0:f7f1f0d76dd6 | 490 | *valueEnd = 0; |
| XinZhangMS | 0:f7f1f0d76dd6 | 491 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 492 | /* Codes_SRS_JSON_DECODER_99_027:[ Elements are separated by commas.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 493 | if (jsonChar == ',') |
| XinZhangMS | 0:f7f1f0d76dd6 | 494 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 495 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 496 | /* get the next value pair */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 497 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 498 | else if (jsonChar == ']') |
| XinZhangMS | 0:f7f1f0d76dd6 | 499 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 500 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 501 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 502 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 503 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 504 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 505 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 506 | break; |
| XinZhangMS | 0:f7f1f0d76dd6 | 507 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 508 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 509 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 510 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 511 | if (result != JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 512 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 513 | /* already have error */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 514 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 515 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 516 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 517 | if (jsonChar != ']') |
| XinZhangMS | 0:f7f1f0d76dd6 | 518 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 519 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 520 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 521 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 522 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 523 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 524 | parserState->json++; |
| XinZhangMS | 0:f7f1f0d76dd6 | 525 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 526 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 527 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 528 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 529 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 530 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 531 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 532 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 533 | /* Codes_SRS_JSON_DECODER_99_012:[ A JSON text is a serialized object or array.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 534 | static JSON_DECODER_RESULT ParseObjectOrArray(PARSER_STATE* parserState, MULTITREE_HANDLE currentNode) |
| XinZhangMS | 0:f7f1f0d76dd6 | 535 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 536 | JSON_DECODER_RESULT result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 537 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 538 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 539 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 540 | if (*(parserState->json) == '{') |
| XinZhangMS | 0:f7f1f0d76dd6 | 541 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 542 | result = ParseObject(parserState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 543 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 544 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 545 | else if (*(parserState->json) == '[') |
| XinZhangMS | 0:f7f1f0d76dd6 | 546 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 547 | result = ParseArray(parserState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 548 | SkipWhiteSpaces(parserState); |
| XinZhangMS | 0:f7f1f0d76dd6 | 549 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 550 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 551 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 552 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 553 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 554 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 555 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 556 | if ((result == JSON_DECODER_OK) && |
| XinZhangMS | 0:f7f1f0d76dd6 | 557 | (*(parserState->json) != '\0')) |
| XinZhangMS | 0:f7f1f0d76dd6 | 558 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 559 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 560 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 561 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 562 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 563 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 564 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 565 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 566 | static JSON_DECODER_RESULT ParseJSON(char* json, MULTITREE_HANDLE currentNode) |
| XinZhangMS | 0:f7f1f0d76dd6 | 567 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 568 | /* Codes_SRS_JSON_DECODER_99_009:[ On success, JSONDecoder_JSON_To_MultiTree shall return a handle to the multi tree it created in the multiTreeHandle argument and it shall return JSON_DECODER_OK.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 569 | PARSER_STATE parseState; |
| XinZhangMS | 0:f7f1f0d76dd6 | 570 | parseState.json = json; |
| XinZhangMS | 0:f7f1f0d76dd6 | 571 | return ParseObjectOrArray(&parseState, currentNode); |
| XinZhangMS | 0:f7f1f0d76dd6 | 572 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 573 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 574 | JSON_DECODER_RESULT JSONDecoder_JSON_To_MultiTree(char* json, MULTITREE_HANDLE* multiTreeHandle) |
| XinZhangMS | 0:f7f1f0d76dd6 | 575 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 576 | JSON_DECODER_RESULT result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 577 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 578 | if ((json == NULL) || |
| XinZhangMS | 0:f7f1f0d76dd6 | 579 | (multiTreeHandle == NULL)) |
| XinZhangMS | 0:f7f1f0d76dd6 | 580 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 581 | /* Codes_SRS_JSON_DECODER_99_001:[ If any of the parameters passed to the JSONDecoder_JSON_To_MultiTree function is NULL then the function call shall return JSON_DECODER_INVALID_ARG.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 582 | result = JSON_DECODER_INVALID_ARG; |
| XinZhangMS | 0:f7f1f0d76dd6 | 583 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 584 | else if (*json == '\0') |
| XinZhangMS | 0:f7f1f0d76dd6 | 585 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 586 | /* Codes_SRS_JSON_DECODER_99_007:[ If parsing the JSON fails due to the JSON string being malformed, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_PARSE_ERROR.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 587 | result = JSON_DECODER_PARSE_ERROR; |
| XinZhangMS | 0:f7f1f0d76dd6 | 588 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 589 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 590 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 591 | /* Codes_SRS_JSON_DECODER_99_008:[ JSONDecoder_JSON_To_MultiTree shall create a multi tree based on the json string argument.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 592 | /* Codes_SRS_JSON_DECODER_99_002:[ JSONDecoder_JSON_To_MultiTree shall use the MultiTree APIs to create the multi tree and add leafs to the multi tree.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 593 | /* Codes_SRS_JSON_DECODER_99_009:[ On success, JSONDecoder_JSON_To_MultiTree shall return a handle to the multi tree it created in the multiTreeHandle argument and it shall return JSON_DECODER_OK.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 594 | *multiTreeHandle = MultiTree_Create(NOPCloneFunction, NoFreeFunction); |
| XinZhangMS | 0:f7f1f0d76dd6 | 595 | if (*multiTreeHandle == NULL) |
| XinZhangMS | 0:f7f1f0d76dd6 | 596 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 597 | /* Codes_SRS_JSON_DECODER_99_038:[ If any MultiTree API fails, JSONDecoder_JSON_To_MultiTree shall return JSON_DECODER_MULTITREE_FAILED.] */ |
| XinZhangMS | 0:f7f1f0d76dd6 | 598 | result = JSON_DECODER_MULTITREE_FAILED; |
| XinZhangMS | 0:f7f1f0d76dd6 | 599 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 600 | else |
| XinZhangMS | 0:f7f1f0d76dd6 | 601 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 602 | result = ParseJSON(json, *multiTreeHandle); |
| XinZhangMS | 0:f7f1f0d76dd6 | 603 | if (result != JSON_DECODER_OK) |
| XinZhangMS | 0:f7f1f0d76dd6 | 604 | { |
| XinZhangMS | 0:f7f1f0d76dd6 | 605 | MultiTree_Destroy(*multiTreeHandle); |
| XinZhangMS | 0:f7f1f0d76dd6 | 606 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 607 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 608 | } |
| XinZhangMS | 0:f7f1f0d76dd6 | 609 | |
| XinZhangMS | 0:f7f1f0d76dd6 | 610 | return result; |
| XinZhangMS | 0:f7f1f0d76dd6 | 611 | } |