15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/json/json_reader.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/json/json_parser.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Values 1000 and above are used by JSONFileValueSerializer::JsonFileError. 13f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)COMPILE_ASSERT(JSONReader::JSON_PARSE_ERROR_COUNT < 1000, 14f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) json_reader_error_out_of_bounds); 15f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kInvalidEscape = 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Invalid escape sequence."; 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kSyntaxError = 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Syntax error."; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kUnexpectedToken = 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Unexpected token."; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kTrailingComma = 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Trailing comma not allowed."; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kTooMuchNesting = 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Too much nesting."; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kUnexpectedDataAfterRoot = 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Unexpected data after root element."; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kUnsupportedEncoding = 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Unsupported encoding. JSON must be UTF-8."; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* JSONReader::kUnquotedDictionaryKey = 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Dictionary keys must be quoted."; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)JSONReader::JSONReader() 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : parser_(new internal::JSONParser(JSON_PARSE_RFC)) { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)JSONReader::JSONReader(int options) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : parser_(new internal::JSONParser(options)) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)JSONReader::~JSONReader() { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Value* JSONReader::Read(const StringPiece& json) { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) internal::JSONParser parser(JSON_PARSE_RFC); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parser.Parse(json); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Value* JSONReader::Read(const StringPiece& json, 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int options) { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) internal::JSONParser parser(options); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parser.Parse(json); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Value* JSONReader::ReadAndReturnError(const StringPiece& json, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int options, 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int* error_code_out, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string* error_msg_out) { 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) internal::JSONParser parser(options); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Value* root = parser.Parse(json); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (root) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return root; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (error_code_out) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *error_code_out = parser.error_code(); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (error_msg_out) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *error_msg_out = parser.GetErrorMessage(); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string JSONReader::ErrorCodeToString(JsonParseError error_code) { 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (error_code) { 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_NO_ERROR: 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_INVALID_ESCAPE: 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kInvalidEscape; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_SYNTAX_ERROR: 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kSyntaxError; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_UNEXPECTED_TOKEN: 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kUnexpectedToken; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_TRAILING_COMMA: 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kTrailingComma; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_TOO_MUCH_NESTING: 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kTooMuchNesting; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_UNEXPECTED_DATA_AFTER_ROOT: 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kUnexpectedDataAfterRoot; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_UNSUPPORTED_ENCODING: 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kUnsupportedEncoding; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case JSON_UNQUOTED_DICTIONARY_KEY: 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kUnquotedDictionaryKey; 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Value* JSONReader::ReadToValue(const std::string& json) { 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parser_->Parse(json); 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)JSONReader::JsonParseError JSONReader::error_code() const { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parser_->error_code(); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string JSONReader::GetErrorMessage() const { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parser_->GetErrorMessage(); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 115