Merge c1fe4641cf into 04dddd6999
This commit is contained in:
commit
4471f7e19f
429
src/stream.cpp
429
src/stream.cpp
@ -1,153 +1,12 @@
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#include <iostream>
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#include "stream.h"
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#ifndef YAML_PREFETCH_SIZE
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#define YAML_PREFETCH_SIZE 2048
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#endif
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#define S_ARRAY_SIZE(A) (sizeof(A) / sizeof(*(A)))
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#define S_ARRAY_END(A) ((A) + S_ARRAY_SIZE(A))
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#define CP_REPLACEMENT_CHARACTER (0xFFFD)
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namespace YAML {
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enum UtfIntroState {
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uis_start,
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uis_utfbe_b1,
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uis_utf32be_b2,
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uis_utf32be_bom3,
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uis_utf32be,
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uis_utf16be,
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uis_utf16be_bom1,
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uis_utfle_bom1,
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uis_utf16le_bom2,
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uis_utf32le_bom3,
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uis_utf16le,
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uis_utf32le,
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uis_utf8_imp,
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uis_utf16le_imp,
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uis_utf32le_imp3,
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uis_utf8_bom1,
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uis_utf8_bom2,
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uis_utf8,
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uis_error
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};
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enum UtfIntroCharType {
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uict00,
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uictBB,
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uictBF,
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uictEF,
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uictFE,
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uictFF,
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uictAscii,
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uictOther,
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uictMax
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};
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static bool s_introFinalState[] = {
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false, // uis_start
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false, // uis_utfbe_b1
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false, // uis_utf32be_b2
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false, // uis_utf32be_bom3
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true, // uis_utf32be
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true, // uis_utf16be
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false, // uis_utf16be_bom1
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false, // uis_utfle_bom1
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false, // uis_utf16le_bom2
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false, // uis_utf32le_bom3
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true, // uis_utf16le
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true, // uis_utf32le
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false, // uis_utf8_imp
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false, // uis_utf16le_imp
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false, // uis_utf32le_imp3
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false, // uis_utf8_bom1
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false, // uis_utf8_bom2
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true, // uis_utf8
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true, // uis_error
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};
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static UtfIntroState s_introTransitions[][uictMax] = {
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// uict00, uictBB, uictBF, uictEF,
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// uictFE, uictFF, uictAscii, uictOther
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{uis_utfbe_b1, uis_utf8, uis_utf8, uis_utf8_bom1, uis_utf16be_bom1,
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uis_utfle_bom1, uis_utf8_imp, uis_utf8},
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{uis_utf32be_b2, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8,
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uis_utf16be, uis_utf8},
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{uis_utf32be, uis_utf8, uis_utf8, uis_utf8, uis_utf32be_bom3, uis_utf8,
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uis_utf8, uis_utf8},
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{uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf32be, uis_utf8,
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uis_utf8},
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{uis_utf32be, uis_utf32be, uis_utf32be, uis_utf32be, uis_utf32be,
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uis_utf32be, uis_utf32be, uis_utf32be},
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{uis_utf16be, uis_utf16be, uis_utf16be, uis_utf16be, uis_utf16be,
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uis_utf16be, uis_utf16be, uis_utf16be},
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{uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf16be, uis_utf8,
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uis_utf8},
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{uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf16le_bom2, uis_utf8,
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uis_utf8, uis_utf8},
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{uis_utf32le_bom3, uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le,
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uis_utf16le, uis_utf16le, uis_utf16le},
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{uis_utf32le, uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le,
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uis_utf16le, uis_utf16le, uis_utf16le},
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{uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le,
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uis_utf16le, uis_utf16le, uis_utf16le},
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{uis_utf32le, uis_utf32le, uis_utf32le, uis_utf32le, uis_utf32le,
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uis_utf32le, uis_utf32le, uis_utf32le},
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{uis_utf16le_imp, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8,
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uis_utf8, uis_utf8},
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{uis_utf32le_imp3, uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le,
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uis_utf16le, uis_utf16le, uis_utf16le},
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{uis_utf32le, uis_utf16le, uis_utf16le, uis_utf16le, uis_utf16le,
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uis_utf16le, uis_utf16le, uis_utf16le},
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{uis_utf8, uis_utf8_bom2, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8,
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uis_utf8},
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{uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8,
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uis_utf8},
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{uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8, uis_utf8,
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uis_utf8},
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};
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static char s_introUngetCount[][uictMax] = {
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// uict00, uictBB, uictBF, uictEF, uictFE, uictFF, uictAscii, uictOther
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{0, 1, 1, 0, 0, 0, 0, 1}, {0, 2, 2, 2, 2, 2, 2, 2},
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{3, 3, 3, 3, 0, 3, 3, 3}, {4, 4, 4, 4, 4, 0, 4, 4},
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{1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1},
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{2, 2, 2, 2, 2, 0, 2, 2}, {2, 2, 2, 2, 0, 2, 2, 2},
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{0, 1, 1, 1, 1, 1, 1, 1}, {0, 2, 2, 2, 2, 2, 2, 2},
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{1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1},
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{0, 2, 2, 2, 2, 2, 2, 2}, {0, 3, 3, 3, 3, 3, 3, 3},
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{4, 4, 4, 4, 4, 4, 4, 4}, {2, 0, 2, 2, 2, 2, 2, 2},
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{3, 3, 0, 3, 3, 3, 3, 3}, {1, 1, 1, 1, 1, 1, 1, 1},
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};
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inline UtfIntroCharType IntroCharTypeOf(std::istream::int_type ch) {
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if (std::istream::traits_type::eof() == ch) {
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return uictOther;
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}
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switch (ch) {
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case 0:
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return uict00;
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case 0xBB:
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return uictBB;
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case 0xBF:
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return uictBF;
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case 0xEF:
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return uictEF;
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case 0xFE:
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return uictFE;
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case 0xFF:
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return uictFF;
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}
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if ((ch > 0) && (ch < 0xFF)) {
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return uictAscii;
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}
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return uictOther;
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}
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inline char Utf8Adjust(unsigned long ch, unsigned char lead_bits,
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unsigned char rshift) {
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@ -182,96 +41,116 @@ inline void QueueUnicodeCodepoint(std::deque<char>& q, unsigned long ch) {
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}
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}
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// Determine (or guess) the character-set by reading the BOM, if any.
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// See the YAML specification for the determination algorithm.
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// Returns the size of detected BOM
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uint_fast8_t Stream::CheckBOM(const uint8_t* buffer, std::size_t size) {
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if (size >= 4) {
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if (buffer[0] == 0x00 && buffer[1] == 0x00 && buffer[2] == 0xFE &&
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buffer[3] == 0xFF) {
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m_charSet = utf32be;
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return 4;
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}
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if (buffer[0] == 0x00 && buffer[1] == 0x00 && buffer[2] == 0x00) {
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m_charSet = utf32be;
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return 0;
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}
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if (buffer[0] == 0xFF && buffer[1] == 0xFE && buffer[2] == 0x00 &&
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buffer[3] == 0x00) {
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m_charSet = utf32le;
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return 4;
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}
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if (buffer[1] == 0x00 && buffer[2] == 0x00 && buffer[3] == 0x00) {
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m_charSet = utf32le;
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return 0;
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}
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}
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if (size >= 2) {
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if (buffer[0] == 0xFE && buffer[1] == 0xFF) {
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m_charSet = utf16be;
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return 2;
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}
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if (buffer[0] == 0x00) {
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m_charSet = utf16be;
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return 0;
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}
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if (buffer[0] == 0xFF && buffer[1] == 0xFE) {
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m_charSet = utf16le;
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return 2;
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}
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if (buffer[1] == 0x00) {
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m_charSet = utf16le;
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return 0;
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}
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}
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if (size >= 3) {
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if (buffer[0] == 0xEF && buffer[1] == 0xBB && buffer[2] == 0xBF) {
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m_charSet = utf8;
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return 3;
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}
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}
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m_charSet = utf8;
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return 0;
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}
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Stream::Stream(std::istream& input)
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: m_input(input),
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m_mark{},
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m_charSet{},
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m_readahead{},
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m_pPrefetched(new unsigned char[YAML_PREFETCH_SIZE]),
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m_pPrefetched(new uint8_t[YAML_PREFETCH_SIZE]),
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m_nPrefetchedAvailable(0),
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m_nPrefetchedUsed(0) {
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using char_traits = std::istream::traits_type;
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m_nPrefetchedUsed(0),
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m_readahead{},
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m_mark{},
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m_charSet(utf8) {
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if (!input)
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if (!input.good())
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return;
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// Determine (or guess) the character-set by reading the BOM, if any. See
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// the YAML specification for the determination algorithm.
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char_traits::int_type intro[4]{};
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int nIntroUsed = 0;
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UtfIntroState state = uis_start;
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for (; !s_introFinalState[state];) {
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std::istream::int_type ch = input.get();
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intro[nIntroUsed++] = ch;
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UtfIntroCharType charType = IntroCharTypeOf(ch);
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UtfIntroState newState = s_introTransitions[state][charType];
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int nUngets = s_introUngetCount[state][charType];
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if (nUngets > 0) {
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input.clear();
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for (; nUngets > 0; --nUngets) {
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if (char_traits::eof() != intro[--nIntroUsed])
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input.putback(char_traits::to_char_type(intro[nIntroUsed]));
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}
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}
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state = newState;
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}
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switch (state) {
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case uis_utf8:
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m_charSet = utf8;
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break;
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case uis_utf16le:
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m_charSet = utf16le;
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break;
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case uis_utf16be:
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m_charSet = utf16be;
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break;
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case uis_utf32le:
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m_charSet = utf32le;
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break;
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case uis_utf32be:
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m_charSet = utf32be;
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break;
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default:
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m_charSet = utf8;
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break;
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}
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ReadAheadTo(0);
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input.read(reinterpret_cast<char*>(m_pPrefetched), YAML_PREFETCH_SIZE);
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m_nPrefetchedAvailable = input.gcount();
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m_nPrefetchedUsed = CheckBOM(m_pPrefetched, m_nPrefetchedAvailable);
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}
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Stream::~Stream() { delete[] m_pPrefetched; }
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char Stream::peek() const {
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if (m_readahead.empty()) {
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bool Stream::isEmpty() const {
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return m_readahead.empty() && m_nPrefetchedUsed >= m_nPrefetchedAvailable &&
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!m_input.good();
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}
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Stream::operator bool() const { return !isEmpty(); }
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char Stream::peek(std::size_t i) const {
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if (prepare(i)) {
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return m_readahead[i];
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} else {
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return Stream::eof();
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}
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return m_readahead[0];
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}
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Stream::operator bool() const {
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return m_input.good() ||
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(!m_readahead.empty() && m_readahead[0] != Stream::eof());
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}
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// get
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// . Extracts a character from the stream and updates our position
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// Extracts a character from the stream and updates our position
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char Stream::get() {
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char ch = peek();
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AdvanceCurrent();
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m_mark.column++;
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if (ch == '\n') {
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m_mark.column = 0;
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m_mark.line++;
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if (prepare(0)) {
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char c = m_readahead.front();
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m_readahead.pop_front();
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m_mark.pos++;
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if (c == '\n') {
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m_mark.column = 0;
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m_mark.line++;
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} else {
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m_mark.column++;
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}
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return c;
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} else {
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return Stream::eof();
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}
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return ch;
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}
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// get
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// . Extracts 'n' characters from the stream and updates our position
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// Extracts 'n' characters from the stream and updates our position
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std::string Stream::get(int n) {
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std::string ret;
|
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if (n > 0) {
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@ -282,74 +161,85 @@ std::string Stream::get(int n) {
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return ret;
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}
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// eat
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// . Eats 'n' characters and updates our position.
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// Eats 'n' characters and updates our position.
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void Stream::eat(int n) {
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for (int i = 0; i < n; i++)
|
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get();
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}
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void Stream::AdvanceCurrent() {
|
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if (!m_readahead.empty()) {
|
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m_readahead.pop_front();
|
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m_mark.pos++;
|
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}
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ReadAheadTo(0);
|
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}
|
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|
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bool Stream::_ReadAheadTo(size_t i) const {
|
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while (m_input.good() && (m_readahead.size() <= i)) {
|
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bool Stream::prepare(std::size_t i) const {
|
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while (m_readahead.size() <= i) {
|
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bool resume;
|
||||
switch (m_charSet) {
|
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case utf8:
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StreamInUtf8();
|
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resume = StreamInUtf8();
|
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break;
|
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case utf16le:
|
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StreamInUtf16();
|
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resume = StreamInUtf16();
|
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break;
|
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case utf16be:
|
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StreamInUtf16();
|
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resume = StreamInUtf16();
|
||||
break;
|
||||
case utf32le:
|
||||
StreamInUtf32();
|
||||
resume = StreamInUtf32();
|
||||
break;
|
||||
case utf32be:
|
||||
StreamInUtf32();
|
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resume = StreamInUtf32();
|
||||
break;
|
||||
}
|
||||
if (!resume) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// signal end of stream
|
||||
if (!m_input.good())
|
||||
m_readahead.push_back(Stream::eof());
|
||||
|
||||
return m_readahead.size() > i;
|
||||
}
|
||||
|
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void Stream::StreamInUtf8() const {
|
||||
unsigned char b = GetNextByte();
|
||||
if (m_input.good()) {
|
||||
m_readahead.push_back(static_cast<char>(b));
|
||||
bool Stream::GetNextByte(uint8_t& byte) const {
|
||||
if (m_nPrefetchedUsed >= m_nPrefetchedAvailable) {
|
||||
if (m_input.good()) {
|
||||
m_input.read(reinterpret_cast<char*>(m_pPrefetched), YAML_PREFETCH_SIZE);
|
||||
m_nPrefetchedAvailable = m_input.gcount();
|
||||
m_nPrefetchedUsed = 0;
|
||||
} else {
|
||||
m_nPrefetchedAvailable = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (m_nPrefetchedAvailable != 0) {
|
||||
byte = m_pPrefetched[m_nPrefetchedUsed++];
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
void Stream::StreamInUtf16() const {
|
||||
bool Stream::StreamInUtf8() const {
|
||||
uint8_t byte;
|
||||
if (GetNextByte(byte)) {
|
||||
m_readahead.push_back(static_cast<char>(byte));
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
bool Stream::StreamInUtf16() const {
|
||||
unsigned long ch = 0;
|
||||
unsigned char bytes[2];
|
||||
uint8_t bytes[2];
|
||||
int nBigEnd = (m_charSet == utf16be) ? 0 : 1;
|
||||
|
||||
bytes[0] = GetNextByte();
|
||||
bytes[1] = GetNextByte();
|
||||
if (!m_input.good()) {
|
||||
return;
|
||||
if (!GetNextByte(bytes[0]) || !GetNextByte(bytes[1])) {
|
||||
return false;
|
||||
}
|
||||
|
||||
ch = (static_cast<unsigned long>(bytes[nBigEnd]) << 8) |
|
||||
static_cast<unsigned long>(bytes[1 ^ nBigEnd]);
|
||||
|
||||
if (ch >= 0xDC00 && ch < 0xE000) {
|
||||
// Trailing (low) surrogate...ugh, wrong order
|
||||
QueueUnicodeCodepoint(m_readahead, CP_REPLACEMENT_CHARACTER);
|
||||
return;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (ch >= 0xD800 && ch < 0xDC00) {
|
||||
@ -359,11 +249,8 @@ void Stream::StreamInUtf16() const {
|
||||
|
||||
// Read the trailing (low) surrogate
|
||||
for (;;) {
|
||||
bytes[0] = GetNextByte();
|
||||
bytes[1] = GetNextByte();
|
||||
if (!m_input.good()) {
|
||||
QueueUnicodeCodepoint(m_readahead, CP_REPLACEMENT_CHARACTER);
|
||||
return;
|
||||
if (!GetNextByte(bytes[0]) || !GetNextByte(bytes[1])) {
|
||||
return false;
|
||||
}
|
||||
unsigned long chLow = (static_cast<unsigned long>(bytes[nBigEnd]) << 8) |
|
||||
static_cast<unsigned long>(bytes[1 ^ nBigEnd]);
|
||||
@ -376,7 +263,7 @@ void Stream::StreamInUtf16() const {
|
||||
if (chLow < 0xD800 || chLow >= 0xE000) {
|
||||
// Easiest case: queue the codepoint and return
|
||||
QueueUnicodeCodepoint(m_readahead, ch);
|
||||
return;
|
||||
return true;
|
||||
}
|
||||
// Start the loop over with the new high surrogate
|
||||
ch = chLow;
|
||||
@ -397,43 +284,19 @@ void Stream::StreamInUtf16() const {
|
||||
}
|
||||
|
||||
QueueUnicodeCodepoint(m_readahead, ch);
|
||||
return true;
|
||||
}
|
||||
|
||||
inline char* ReadBuffer(unsigned char* pBuffer) {
|
||||
return reinterpret_cast<char*>(pBuffer);
|
||||
}
|
||||
|
||||
unsigned char Stream::GetNextByte() const {
|
||||
if (m_nPrefetchedUsed >= m_nPrefetchedAvailable) {
|
||||
std::streambuf* pBuf = m_input.rdbuf();
|
||||
m_nPrefetchedAvailable = static_cast<std::size_t>(
|
||||
pBuf->sgetn(ReadBuffer(m_pPrefetched), YAML_PREFETCH_SIZE));
|
||||
m_nPrefetchedUsed = 0;
|
||||
if (!m_nPrefetchedAvailable) {
|
||||
m_input.setstate(std::ios_base::eofbit);
|
||||
}
|
||||
|
||||
if (0 == m_nPrefetchedAvailable) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return m_pPrefetched[m_nPrefetchedUsed++];
|
||||
}
|
||||
|
||||
void Stream::StreamInUtf32() const {
|
||||
bool Stream::StreamInUtf32() const {
|
||||
static int indexes[2][4] = {{3, 2, 1, 0}, {0, 1, 2, 3}};
|
||||
|
||||
unsigned long ch = 0;
|
||||
unsigned char bytes[4];
|
||||
uint8_t bytes[4];
|
||||
int* pIndexes = (m_charSet == utf32be) ? indexes[1] : indexes[0];
|
||||
|
||||
bytes[0] = GetNextByte();
|
||||
bytes[1] = GetNextByte();
|
||||
bytes[2] = GetNextByte();
|
||||
bytes[3] = GetNextByte();
|
||||
if (!m_input.good()) {
|
||||
return;
|
||||
if (!GetNextByte(bytes[0]) || !GetNextByte(bytes[1]) ||
|
||||
!GetNextByte(bytes[2]) || !GetNextByte(bytes[3])) {
|
||||
return false;
|
||||
}
|
||||
|
||||
for (int i = 0; i < 4; ++i) {
|
||||
@ -442,5 +305,7 @@ void Stream::StreamInUtf32() const {
|
||||
}
|
||||
|
||||
QueueUnicodeCodepoint(m_readahead, ch);
|
||||
return true;
|
||||
}
|
||||
|
||||
} // namespace YAML
|
||||
|
||||
53
src/stream.h
53
src/stream.h
@ -9,20 +9,16 @@
|
||||
|
||||
#include "yaml-cpp/mark.h"
|
||||
#include <cstddef>
|
||||
#include <cstdint>
|
||||
#include <deque>
|
||||
#include <ios>
|
||||
#include <iostream>
|
||||
#include <set>
|
||||
#include <string>
|
||||
|
||||
namespace YAML {
|
||||
|
||||
class StreamCharSource;
|
||||
|
||||
// Converts arbitrary UTF-* encoding on input to UTF-8
|
||||
class Stream {
|
||||
public:
|
||||
friend class StreamCharSource;
|
||||
|
||||
Stream(std::istream& input);
|
||||
Stream(const Stream&) = delete;
|
||||
Stream(Stream&&) = delete;
|
||||
@ -30,15 +26,15 @@ class Stream {
|
||||
Stream& operator=(Stream&&) = delete;
|
||||
~Stream();
|
||||
|
||||
operator bool() const;
|
||||
bool operator!() const { return !static_cast<bool>(*this); }
|
||||
static char eof() { return 0x04; }
|
||||
|
||||
char peek() const;
|
||||
char peek(std::size_t i = 0) const;
|
||||
char get();
|
||||
std::string get(int n);
|
||||
void eat(int n = 1);
|
||||
|
||||
static char eof() { return 0x04; }
|
||||
bool isEmpty() const;
|
||||
operator bool() const;
|
||||
|
||||
const Mark mark() const { return m_mark; }
|
||||
int pos() const { return m_mark.pos; }
|
||||
@ -47,36 +43,25 @@ class Stream {
|
||||
void ResetColumn() { m_mark.column = 0; }
|
||||
|
||||
private:
|
||||
enum CharacterSet { utf8, utf16le, utf16be, utf32le, utf32be };
|
||||
uint_fast8_t CheckBOM(const uint8_t* buffer, std::size_t size);
|
||||
bool prepare(std::size_t i) const;
|
||||
bool StreamInUtf8() const;
|
||||
bool StreamInUtf16() const;
|
||||
bool StreamInUtf32() const;
|
||||
bool GetNextByte(uint8_t& byte) const;
|
||||
|
||||
private:
|
||||
std::istream& m_input;
|
||||
uint8_t* const m_pPrefetched;
|
||||
mutable std::size_t m_nPrefetchedAvailable;
|
||||
mutable std::size_t m_nPrefetchedUsed;
|
||||
|
||||
mutable std::deque<char> m_readahead;
|
||||
Mark m_mark;
|
||||
|
||||
CharacterSet m_charSet;
|
||||
mutable std::deque<char> m_readahead;
|
||||
unsigned char* const m_pPrefetched;
|
||||
mutable size_t m_nPrefetchedAvailable;
|
||||
mutable size_t m_nPrefetchedUsed;
|
||||
|
||||
void AdvanceCurrent();
|
||||
char CharAt(size_t i) const;
|
||||
bool ReadAheadTo(size_t i) const;
|
||||
bool _ReadAheadTo(size_t i) const;
|
||||
void StreamInUtf8() const;
|
||||
void StreamInUtf16() const;
|
||||
void StreamInUtf32() const;
|
||||
unsigned char GetNextByte() const;
|
||||
enum { utf8, utf16le, utf16be, utf32le, utf32be } m_charSet;
|
||||
};
|
||||
|
||||
// CharAt
|
||||
// . Unchecked access
|
||||
inline char Stream::CharAt(size_t i) const { return m_readahead[i]; }
|
||||
|
||||
inline bool Stream::ReadAheadTo(size_t i) const {
|
||||
if (m_readahead.size() > i)
|
||||
return true;
|
||||
return _ReadAheadTo(i);
|
||||
}
|
||||
} // namespace YAML
|
||||
|
||||
#endif // STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
|
||||
|
||||
@ -7,8 +7,8 @@
|
||||
#pragma once
|
||||
#endif
|
||||
|
||||
#include "yaml-cpp/noexcept.h"
|
||||
#include "stream.h"
|
||||
#include "yaml-cpp/noexcept.h"
|
||||
#include <cstddef>
|
||||
|
||||
namespace YAML {
|
||||
@ -22,29 +22,24 @@ class StreamCharSource {
|
||||
StreamCharSource& operator=(StreamCharSource&&) = delete;
|
||||
~StreamCharSource() = default;
|
||||
|
||||
operator bool() const;
|
||||
char operator[](std::size_t i) const { return m_stream.CharAt(m_offset + i); }
|
||||
bool operator!() const { return !static_cast<bool>(*this); }
|
||||
operator bool() const { return true; }
|
||||
|
||||
const StreamCharSource operator+(int i) const;
|
||||
char operator[](std::size_t i) const { return m_stream.peek(m_offset + i); }
|
||||
|
||||
const StreamCharSource operator+(int i) const {
|
||||
StreamCharSource source(*this);
|
||||
if (static_cast<int>(source.m_offset) + i >= 0)
|
||||
source.m_offset += static_cast<std::size_t>(i);
|
||||
else
|
||||
source.m_offset = 0;
|
||||
return source;
|
||||
}
|
||||
|
||||
private:
|
||||
std::size_t m_offset;
|
||||
const Stream& m_stream;
|
||||
};
|
||||
|
||||
inline StreamCharSource::operator bool() const {
|
||||
return m_stream.ReadAheadTo(m_offset);
|
||||
}
|
||||
|
||||
inline const StreamCharSource StreamCharSource::operator+(int i) const {
|
||||
StreamCharSource source(*this);
|
||||
if (static_cast<int>(source.m_offset) + i >= 0)
|
||||
source.m_offset += static_cast<std::size_t>(i);
|
||||
else
|
||||
source.m_offset = 0;
|
||||
return source;
|
||||
}
|
||||
} // namespace YAML
|
||||
|
||||
#endif // STREAMCHARSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
|
||||
|
||||
Loading…
Reference in New Issue
Block a user