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121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/json/json_reader.h"
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#include "base/json/json_parser.h"
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#include "base/logging.h"
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#include "base/values.h"
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namespace base {
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// Values 1000 and above are used by JSONFileValueSerializer::JsonFileError.
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static_assert(JSONReader::JSON_PARSE_ERROR_COUNT < 1000,
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"JSONReader error out of bounds");
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const char JSONReader::kInvalidEscape[] =
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"Invalid escape sequence.";
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const char JSONReader::kSyntaxError[] =
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"Syntax error.";
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const char JSONReader::kUnexpectedToken[] =
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"Unexpected token.";
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const char JSONReader::kTrailingComma[] =
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"Trailing comma not allowed.";
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const char JSONReader::kTooMuchNesting[] =
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"Too much nesting.";
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const char JSONReader::kUnexpectedDataAfterRoot[] =
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"Unexpected data after root element.";
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const char JSONReader::kUnsupportedEncoding[] =
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"Unsupported encoding. JSON must be UTF-8.";
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const char JSONReader::kUnquotedDictionaryKey[] =
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"Dictionary keys must be quoted.";
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JSONReader::JSONReader()
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: JSONReader(JSON_PARSE_RFC) {
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}
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JSONReader::JSONReader(int options)
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: parser_(new internal::JSONParser(options)) {
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}
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JSONReader::~JSONReader() = default;
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// static
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std::unique_ptr<Value> JSONReader::Read(StringPiece json) {
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internal::JSONParser parser(JSON_PARSE_RFC);
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return parser.Parse(json);
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}
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// static
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std::unique_ptr<Value> JSONReader::Read(StringPiece json, int options) {
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internal::JSONParser parser(options);
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return parser.Parse(json);
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}
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// static
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std::unique_ptr<Value> JSONReader::ReadAndReturnError(
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const StringPiece& json,
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int options,
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int* error_code_out,
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std::string* error_msg_out,
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int* error_line_out,
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int* error_column_out) {
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internal::JSONParser parser(options);
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std::unique_ptr<Value> root(parser.Parse(json));
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if (!root) {
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if (error_code_out)
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*error_code_out = parser.error_code();
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if (error_msg_out)
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*error_msg_out = parser.GetErrorMessage();
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if (error_line_out)
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*error_line_out = parser.error_line();
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if (error_column_out)
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*error_column_out = parser.error_column();
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}
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return root;
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}
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// static
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std::string JSONReader::ErrorCodeToString(JsonParseError error_code) {
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switch (error_code) {
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case JSON_NO_ERROR:
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return std::string();
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case JSON_INVALID_ESCAPE:
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return kInvalidEscape;
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case JSON_SYNTAX_ERROR:
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return kSyntaxError;
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case JSON_UNEXPECTED_TOKEN:
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return kUnexpectedToken;
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case JSON_TRAILING_COMMA:
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return kTrailingComma;
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case JSON_TOO_MUCH_NESTING:
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return kTooMuchNesting;
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case JSON_UNEXPECTED_DATA_AFTER_ROOT:
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return kUnexpectedDataAfterRoot;
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case JSON_UNSUPPORTED_ENCODING:
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return kUnsupportedEncoding;
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case JSON_UNQUOTED_DICTIONARY_KEY:
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return kUnquotedDictionaryKey;
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default:
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NOTREACHED();
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return std::string();
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}
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}
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std::unique_ptr<Value> JSONReader::ReadToValue(StringPiece json) {
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return parser_->Parse(json);
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}
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JSONReader::JsonParseError JSONReader::error_code() const {
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return parser_->error_code();
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}
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std::string JSONReader::GetErrorMessage() const {
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return parser_->GetErrorMessage();
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}
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} // namespace base
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