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78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
// Tencent is pleased to support the open source community by making RapidJSON available.
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//
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// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#ifndef RAPIDJSON_CURSORSTREAMWRAPPER_H_
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#define RAPIDJSON_CURSORSTREAMWRAPPER_H_
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#include "stream.h"
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#if defined(__GNUC__)
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RAPIDJSON_DIAG_PUSH
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RAPIDJSON_DIAG_OFF(effc++)
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#endif
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#if defined(_MSC_VER) && _MSC_VER <= 1800
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RAPIDJSON_DIAG_PUSH
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RAPIDJSON_DIAG_OFF(4702) // unreachable code
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RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated
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#endif
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RAPIDJSON_NAMESPACE_BEGIN
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//! Cursor stream wrapper for counting line and column number if error exists.
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/*!
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\tparam InputStream Any stream that implements Stream Concept
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*/
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template <typename InputStream, typename Encoding = UTF8<> >
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class CursorStreamWrapper : public GenericStreamWrapper<InputStream, Encoding> {
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public:
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typedef typename Encoding::Ch Ch;
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CursorStreamWrapper(InputStream& is):
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GenericStreamWrapper<InputStream, Encoding>(is), line_(1), col_(0) {}
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// counting line and column number
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Ch Take() {
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Ch ch = this->is_.Take();
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if(ch == '\n') {
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line_ ++;
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col_ = 0;
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} else {
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col_ ++;
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}
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return ch;
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}
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//! Get the error line number, if error exists.
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size_t GetLine() const { return line_; }
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//! Get the error column number, if error exists.
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size_t GetColumn() const { return col_; }
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private:
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size_t line_; //!< Current Line
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size_t col_; //!< Current Column
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};
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#if defined(_MSC_VER) && _MSC_VER <= 1800
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RAPIDJSON_DIAG_POP
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#endif
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#if defined(__GNUC__)
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RAPIDJSON_DIAG_POP
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#endif
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RAPIDJSON_NAMESPACE_END
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#endif // RAPIDJSON_CURSORSTREAMWRAPPER_H_
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