81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
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#pragma once
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#ifndef STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#define STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#include "noncopyable.h"
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#include "mark.h"
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#include <deque>
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#include <ios>
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#include <string>
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#include <iostream>
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#include <set>
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namespace YAML
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{
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static const size_t MAX_PARSER_PUSHBACK = 8;
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class Stream: private noncopyable
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{
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public:
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friend class StreamCharSource;
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Stream(std::istream& input);
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~Stream();
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operator bool() const;
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bool operator !() const { return !static_cast <bool>(*this); }
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char peek() const;
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char get();
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std::string get(int n);
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void eat(int n = 1);
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static char eof() { return 0x04; }
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const Mark mark() const { return m_mark; }
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int pos() const { return m_mark.pos; }
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int line() const { return m_mark.line; }
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int column() const { return m_mark.column; }
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void ResetColumn() { m_mark.column = 0; }
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private:
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enum CharacterSet {utf8, utf16le, utf16be, utf32le, utf32be};
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std::istream& m_input;
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Mark m_mark;
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CharacterSet m_charSet;
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unsigned char m_bufPushback[MAX_PARSER_PUSHBACK];
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mutable size_t m_nPushedBack;
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mutable std::deque<char> m_readahead;
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unsigned char* const m_pPrefetched;
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mutable size_t m_nPrefetchedAvailable;
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mutable size_t m_nPrefetchedUsed;
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void AdvanceCurrent();
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char CharAt(size_t i) const;
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bool ReadAheadTo(size_t i) const;
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bool _ReadAheadTo(size_t i) const;
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void StreamInUtf8() const;
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void StreamInUtf16() const;
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void StreamInUtf32() const;
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unsigned char GetNextByte() const;
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};
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// CharAt
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// . Unchecked access
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inline char Stream::CharAt(size_t i) const {
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return m_readahead[i];
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}
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inline bool Stream::ReadAheadTo(size_t i) const {
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if(m_readahead.size() > i)
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return true;
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return _ReadAheadTo(i);
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}
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}
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#endif // STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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