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Whitespace and assert improvements in Reader.

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Ferdinand Majerech 2014-07-19 15:39:27 +02:00
parent 2332290950
commit a990771991
1 changed files with 15 additions and 14 deletions
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25
source/dyaml/reader.d
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@ -512,7 +512,8 @@ struct UTFBlockDecoder(size_t bufferSize_) if (bufferSize_ % 2 == 0)
// Read and decode characters from file and store them in the buffer. // Read and decode characters from file and store them in the buffer.
void updateBuffer() @trusted void updateBuffer() @trusted
{ {
assert(buffer_.length == 0); assert(buffer_.length == 0,
"updateBuffer can only be called when the buffer is empty");
final switch(encoding_) final switch(encoding_)
{ {
case Encoding.UTF_8: case Encoding.UTF_8:
@ -550,19 +551,19 @@ struct UTFBlockDecoder(size_t bufferSize_) if (bufferSize_ % 2 == 0)
void decodeRawBuffer(C)(C[] buffer, const size_t length) void decodeRawBuffer(C)(C[] buffer, const size_t length)
@safe pure @safe pure
{ {
//End of part of rawBuffer8_ that contains // End of part of rawBuffer8_ that contains
//complete characters and can be decoded. // complete characters and can be decoded.
const end = endOfLastUTFSequence(buffer, length); const end = endOfLastUTFSequence(buffer, length);
//If end is 0, there are no full UTF-8 chars. // If end is 0, there are no full UTF-8 chars.
//This can happen at the end of file if there is an incomplete UTF-8 sequence. // This can happen at the end of file if there is an incomplete UTF-8 sequence.
enforce(end > 0, enforce(end > 0,
new ReaderException("Invalid UTF-8 character at the end of stream")); new ReaderException("Invalid UTF-8 character at the end of stream"));
decodeUTF(buffer[0 .. end]); decodeUTF(buffer[0 .. end]);
//After decoding, any code points not decoded go to the start of raw buffer. // After decoding, any code points not decoded go to the start of raw buffer.
rawUsed_ = length - end; rawUsed_ = length - end;
foreach(i; 0 .. rawUsed_){buffer[i] = buffer[i + end];} foreach(i; 0 .. rawUsed_) { buffer[i] = buffer[i + end]; }
} }
// Determine the end of last UTF-8 or UTF-16 sequence in a raw buffer. // Determine the end of last UTF-8 or UTF-16 sequence in a raw buffer.
@ -576,10 +577,10 @@ struct UTFBlockDecoder(size_t bufferSize_) if (bufferSize_ % 2 == 0)
const s = utf8Stride[buffer[cast(size_t)end]]; const s = utf8Stride[buffer[cast(size_t)end]];
if(s != 0xFF) if(s != 0xFF)
{ {
//If stride goes beyond end of the buffer (max), return end. // If stride goes beyond end of the buffer (max), return end.
//Otherwise the last sequence ends at max, so we can return that. // Otherwise the last sequence ends at max, so we can return that.
//(Unless there is an invalid code point, which is // (Unless there is an invalid code point, which is
//caught at decoding) // caught at decoding)
return (s > max - end) ? cast(size_t)end : max; return (s > max - end) ? cast(size_t)end : max;
} }
} }
@ -591,7 +592,7 @@ struct UTFBlockDecoder(size_t bufferSize_) if (bufferSize_ % 2 == 0)
while(end < max) while(end < max)
{ {
const s = stride(buffer, end); const s = stride(buffer, end);
if(s + end > max){break;} if(s + end > max) { break; }
end += s; end += s;
} }
return end; return end;