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Func to count consecutive ASCII chars starting at current Reader position.

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This commit is contained in:
Ferdinand Majerech 2014-08-05 20:36:33 +02:00
parent 7409f3bbd9
commit e01c40ede5
1 changed files with 11 additions and 0 deletions
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11
source/dyaml/reader.d
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@ -76,6 +76,11 @@ final class Reader
Endian endian_; Endian endian_;
} }
// The number of consecutive ASCII characters starting at bufferOffset_.
//
// Used to minimize UTF-8 decoding.
size_t upcomingASCII_ = 0;
// Index to buffer_ where the last decoded character starts. // Index to buffer_ where the last decoded character starts.
size_t lastDecodedBufferOffset_ = 0; size_t lastDecodedBufferOffset_ = 0;
// Offset, relative to charIndex_, of the last decoded character, // Offset, relative to charIndex_, of the last decoded character,
@ -320,6 +325,12 @@ final class Reader
Encoding encoding() @safe pure nothrow const @nogc { return encoding_; } Encoding encoding() @safe pure nothrow const @nogc { return encoding_; }
private: private:
// Update upcomingASCII_ (should be called forward()ing over a UTF-8 sequence)
void checkASCII() @safe pure nothrow @nogc
{
upcomingASCII_ = countASCII(buffer_[bufferOffset_ .. $]);
}
// Decode the next character relative to // Decode the next character relative to
// lastDecodedCharOffset_/lastDecodedBufferOffset_ and update them. // lastDecodedCharOffset_/lastDecodedBufferOffset_ and update them.
// //