protected ReaderBase(BoundConfigurationBase <T> config, object context)
{
RowNumber = 0;
Configuration = config;
Context = context;
var bufferSize = config.ReadBufferSizeHint;
if (bufferSize == 0)
{
bufferSize = DEFAULT_BUFFER_SIZE;
}
Buffer = new BufferWithPushback(config.MemoryPool, bufferSize);
Partial = new Partial <T>(config.MemoryPool);
SharedCharacterLookup =
ReaderStateMachine.MakeCharacterLookup(
config.MemoryPool,
config.EscapedValueStartAndStop,
config.ValueSeparator,
config.EscapeValueEscapeChar,
config.CommentChar
);
}
protected WriterBase(BoundConfigurationBase <T> config, object?context)
{
RowNumber = 0;
Configuration = config;
var options = Configuration.Options;
var memPool = Configuration.MemoryPool;
var writeSizeHint = options.WriteBufferSizeHint;
Buffer = new MaxSizedBufferWriter(memPool, writeSizeHint);
Context = context;
// buffering is configurable
if (writeSizeHint == 0)
{
HasStaging = false;
Staging = EmptyMemoryOwner.Singleton;
StagingMemory = Memory <char> .Empty;
InStaging = -1;
}
else
{
HasStaging = true;
Staging = memPool.Rent(writeSizeHint ?? MaxSizedBufferWriter.DEFAULT_STAGING_SIZE);
StagingMemory = Staging.Memory;
InStaging = 0;
}
IsFirstRow = true;
Columns = Array.Empty <Column>();
WriteContexts = Array.Empty <WriteContext>();
}
internal HeadersReader(
BoundConfigurationBase <T> config,
ReaderStateMachine.CharacterLookup charLookup,
TextReader inner,
BufferWithPushback buffer
)
{
MemoryPool = config.MemoryPool;
BufferSizeHint = config.ReadBufferSizeHint;
Columns = config.DeserializeColumns;
Inner = inner;
StateMachine =
new ReaderStateMachine(
charLookup,
config.EscapedValueStartAndStop,
config.EscapeValueEscapeChar,
config.RowEnding,
ReadHeaders.Never
);
Buffer = buffer;
HeaderCount = 0;
PushBackLength = 0;
}
internal HeadersReader(
ReaderStateMachine stateMachine,
BoundConfigurationBase <T> config,
CharacterLookup charLookup,
IAsyncReaderAdapter inner,
BufferWithPushback buffer,
ReadRowEnding rowEndingOverride
)
: this(stateMachine, config, charLookup, null, inner, buffer, rowEndingOverride)
{
}
protected WriterBase(BoundConfigurationBase <T> config, object context)
{
RowNumber = 0;
Config = config;
Buffer = new MaxSizedBufferWriter(Config.MemoryPool, config.WriteBufferSizeHint);
Context = context;
// buffering is configurable
if (Config.WriteBufferSizeHint == 0)
{
Staging = null;
InStaging = -1;
}
else
{
InStaging = 0;
Staging = Config.MemoryPool.Rent(Config.WriteBufferSizeHint ?? MaxSizedBufferWriter.DEFAULT_STAGING_SIZE);
}
}
private HeadersReader(
ReaderStateMachine stateMachine,
BoundConfigurationBase <T> config,
CharacterLookup charLookup,
IReaderAdapter?inner,
IAsyncReaderAdapter?innerAsync,
BufferWithPushback buffer,
ReadRowEnding rowEndingOverride
)
{
LogHelper.StateTransition_NewHeadersReader();
Configuration = config;
Inner.SetAllowNull(inner);
InnerAsync.SetAllowNull(innerAsync);
var options = Configuration.Options;
MemoryPool = Configuration.MemoryPool;
BufferSizeHint = options.ReadBufferSizeHint;
Columns = config.DeserializeColumns;
StateMachine = stateMachine;
stateMachine.Initialize(
charLookup,
options.EscapedValueStartAndEnd,
options.EscapedValueEscapeCharacter,
rowEndingOverride, // this can be something OTHER than what was provided, due to RowEnding.Detect
ReadHeader.Never,
false,
options.WhitespaceTreatment.HasFlag(WhitespaceTreatments.TrimBeforeValues),
options.WhitespaceTreatment.HasFlag(WhitespaceTreatments.TrimAfterValues)
);
Buffer = buffer;
HeaderCount = 0;
PushBackLength = 0;
WhitespaceTreatment = options.WhitespaceTreatment;
}
protected ReaderBase(BoundConfigurationBase <T> config, object?context, IRowConstructor <T> rowBuilder, ExtraColumnTreatment extraTreatment)
{
RowNumber = 0;
Configuration = config;
Context = context;
var options = config.Options;
var bufferSize = options.ReadBufferSizeHint;
if (bufferSize == 0)
{
bufferSize = Utils.DEFAULT_BUFFER_SIZE;
}
// always need to be able to store a whole value separator "character"
var bufferMinSize = config.ValueSeparatorMemory.Length * 2;
if (bufferSize < bufferMinSize)
{
bufferSize = bufferMinSize;
}
var memPool = config.MemoryPool;
Buffer =
new BufferWithPushback(
memPool,
bufferSize
);
Partial = new Partial(memPool);
SharedCharacterLookup = CharacterLookup.MakeCharacterLookup(options, out _);
StateMachine = new ReaderStateMachine();
RowBuilder = rowBuilder;
ExtraColumnTreatment = extraTreatment;
}
internal RowEndingDetector(BoundConfigurationBase <T> config, ReaderStateMachine.CharacterLookup charLookup, TextReader inner)
{
Inner = inner;
State =
new ReaderStateMachine(
charLookup,
config.EscapedValueStartAndStop,
config.EscapeValueEscapeChar,
RowEndings.None,
ReadHeaders.Never
);
MemoryPool = config.MemoryPool;
BufferSizeHint = config.ReadBufferSizeHint;
if (BufferSizeHint == 0)
{
BufferSizeHint = ReaderBase <T> .DEFAULT_BUFFER_SIZE;
}
BufferOwner = MemoryPool.Rent(BufferSizeHint);
BufferStart = 0;
}
internal AsyncWriterBase(BoundConfigurationBase <T> config, IAsyncWriterAdapter inner, object?context) : base(config, context)
{
Inner = inner;
}
internal SyncReaderBase(IReaderAdapter inner, BoundConfigurationBase <T> config, object?context, IRowConstructor <T> rowBuilder, ExtraColumnTreatment extraTreatment) : base(config, context, rowBuilder, extraTreatment)
{
Inner = inner;
}
