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AbstractReader Class Reference

Inheritance diagram for AbstractReader:

SimpleAllocator IReader Reader TextReader EndianReader HttpReader ConsoleReader List of all members.

Public Types

typedef get opShr
typedef get opCall

Public Member Functions

 this (IBuffer buffer)
IBuffer getBuffer ()
IArrayAllocator getAllocator ()
void setAllocator (IArrayAllocator memory)
void setDecoder (IDecoder d)
void wait ()
IReader get (IReadable x)
IReader get (inout bool x)
IReader get (inout ubyte x)
IReader get (inout byte x)
IReader get (inout ushort x)
IReader get (inout short x)
IReader get (inout uint x)
IReader get (inout int x)
IReader get (inout ulong x)
IReader get (inout long x)
IReader get (inout float x)
IReader get (inout double x)
IReader get (inout real x)
IReader get (inout char x)
IReader get (inout wchar x)
IReader get (inout dchar x)
IReader get (inout ubyte[] x, uint elements=uint.max)
IReader get (inout byte[] x, uint elements=uint.max)
IReader get (inout ushort[] x, uint elements=uint.max)
IReader get (inout short[] x, uint elements=uint.max)
IReader get (inout uint[] x, uint elements=uint.max)
IReader get (inout int[] x, uint elements=uint.max)
IReader get (inout ulong[] x, uint elements=uint.max)
IReader get (inout long[] x, uint elements=uint.max)
IReader get (inout float[] x, uint elements=uint.max)
IReader get (inout double[] x, uint elements=uint.max)
IReader get (inout real[] x, uint elements=uint.max)
IReader get (inout char[] x, uint elements=uint.max)
IReader get (inout wchar[] x, uint elements=uint.max)
IReader get (inout dchar[] x, uint elements=uint.max)

Protected Attributes

IBuffer buffer
Decoder decode

Private Member Functions

final uint count (uint elements)
void reset ()
void bind (IReader reader)
bool isMutable (void *x)
void allocate (void[]*x, uint count, uint width, BufferDecoder decoder)

Private Attributes

IArrayAllocator memory

Detailed Description

Reader base-class. Each reader operates upon an IBuffer, which is provided at construction time. Said buffer is intended to remain consistent over the reader lifetime.

All readers support the full set of native data types, plus a full selection of array types. The latter can be configured to produce either a copy (.dup) of the buffer content, or a slice. See class SimpleAllocator, BufferAllocator and SliceAllocator for more on this topic.

Readers support a C++ iostream type syntax, along with Java-esque get() notation. However, the Mango style is to place IO elements within their own parenthesis, like so:

int count; char[] verse;

read () (count);

Note that each element is distict; this enables "strong typing", which should catch any typo errors at compile-time.

The code below illustrates basic operation upon a memory buffer:

Buffer buf = new Buffer (256); // map same buffer into both reader and writer IReader read = new Reader (buf); IWriter write = new Writer (buf); int i = 10; long j = 20; double d = 3.14159; char[] c = "fred"; // write data types out write (c) (i) (j) (d); // read them back again read (c) (i) (j) (d); // reset buf.clear(); // same thing again, but using iostream syntax instead write << c << i << j << d; // read them back again read >> c >> i >> j >> d; // reset buf.clear(); // same thing again, but using put() syntax instead write.put(c).put(i).put(j).put(d); read.get(c).get(i).get(j).get(d);

Note that certain Readers, such as the basic binary implementation, expect to retrieve the number of array elements from the source. For example; when reading an array from a file, the number of elements is read from the file also. If the content is not arranged in such a manner, you may specify how many elements to read via a second argument:

read (myArray, 11);

Readers may also be used with any class implementing the IReadable interface. See PickleReader for an example of how this can be put to good use.

Definition at line 127 of file AbstractReader.d.


Member Typedef Documentation

typedef get opShr
 

Reimplemented from IReader.

Definition at line 129 of file AbstractReader.d.

typedef get opCall
 

Reimplemented from IReader.

Definition at line 130 of file AbstractReader.d.


Member Function Documentation

this IBuffer  buffer  )  [inline]
 

Return the buffer associated with this reader

Reimplemented in HttpReader, EndianReader, and Reader.

Definition at line 176 of file AbstractReader.d.

References setAllocator().

IBuffer getBuffer  )  [inline]
 

Return the buffer associated with this reader

Reimplemented from IReader.

Definition at line 188 of file AbstractReader.d.

IArrayAllocator getAllocator  )  [inline]
 

Return the allocator associated with this reader.See ArrayAllocator for more information.

Reimplemented from IReader.

Definition at line 200 of file AbstractReader.d.

References memory.

void setAllocator IArrayAllocator  memory  )  [inline]
 

Set the allocator to use for array management. Arrays are always allocated by the IReader. That is, you cannot read data into an array slice (for example). Instead, a number of IArrayAllocator classes are available to manage memory allocation when reading array content.

By default, an IReader will allocate each array from the heap. You can change that behavior by calling this method with an IArrayAllocator of choice. For instance, there is a BufferAllocator which will slice an array directly from the buffer where possible. Also available is the record-oriented SliceAllocator, which slices memory from within a pre-allocated heap area, and should be reset by the client code after each record has been read (to avoid unnecessary growth).

See ArrayAllocator for more information.

Reimplemented from IReader.

Definition at line 227 of file AbstractReader.d.

References IArrayAllocator::bind().

Referenced by this().

void setDecoder IDecoder  d  )  [inline]
 

Bind an IDecoder to the writer. Decoders are intended to be used as a conversion mechanism between various character representations (encodings), or the translation of any data type from one representation to another. Each data type may be configured with a distinct decoder, covering all native types (15 in total).

An appropriate decoder set should be attached to each IReader, and thus be available for subsequent use. A raw binary implementation is attached by default (no encoding).

See module mango.icu.UMango for an example of decoder implementation -- those classes bind the ICU converters to this IO package.

Reimplemented from IReader.

Definition at line 252 of file AbstractReader.d.

References IDecoder::bind(), decode, AbstractReader::Decoder::decoders, and IDecoder::type().

final uint count uint  elements  )  [inline, private]
 

Read and return an integer from the input stream. This is used to extract the element count of a subsequent array.

Definition at line 264 of file AbstractReader.d.

References get().

Referenced by get().

void wait  )  [inline]
 

Wait for something to arrive in the buffer. This may stall the current thread forever, although usage of SocketConduit will take advantage of the timeout facilities provided there.

Reimplemented from IReader.

Definition at line 279 of file AbstractReader.d.

References IBuffer::get().

IReader get IReadable  x  )  [inline]
 

Extract a readable class from the current read-position

Reimplemented from IReader.

Definition at line 290 of file AbstractReader.d.

References assert(), and IReadable::read().

Referenced by count().

IReader get inout bool  x  )  [inline]
 

Extract a boolean value from the current read-position

Reimplemented from IReader.

Definition at line 303 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int1.

IReader get inout ubyte  x  )  [inline]
 

Extract an unsigned byte value from the current read-position

Reimplemented from IReader.

Definition at line 315 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int8u.

IReader get inout byte  x  )  [inline]
 

Extract a byte value from the current read-position

Reimplemented from IReader.

Definition at line 327 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int8.

IReader get inout ushort  x  )  [inline]
 

Extract an unsigned short value from the current read-position

Reimplemented from IReader.

Definition at line 339 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int16u.

IReader get inout short  x  )  [inline]
 

Extract a short value from the current read-position

Reimplemented from IReader.

Definition at line 351 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int16.

IReader get inout uint  x  )  [inline]
 

Extract a unsigned int value from the current read-position

Reimplemented from IReader.

Definition at line 363 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int32u.

IReader get inout int  x  )  [inline]
 

Extract an int value from the current read-position

Reimplemented from IReader.

Definition at line 375 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int32.

IReader get inout ulong  x  )  [inline]
 

Extract an unsigned long value from the current read-position

Reimplemented from IReader.

Definition at line 387 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int64u.

IReader get inout long  x  )  [inline]
 

Extract a long value from the current read-position

Reimplemented from IReader.

Definition at line 399 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::int64.

IReader get inout float  x  )  [inline]
 

Extract a float value from the current read-position

Reimplemented from IReader.

Definition at line 411 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::float32.

IReader get inout double  x  )  [inline]
 

Extract a double value from the current read-position

Reimplemented from IReader.

Definition at line 423 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::float64.

IReader get inout real  x  )  [inline]
 

Extract a real value from the current read-position

Reimplemented from IReader.

Definition at line 435 of file AbstractReader.d.

References decode, and AbstractReader::Decoder::float80.

IReader get inout char  x  )  [inline]
 

Extract a char value from the current read-position

Reimplemented from IReader.

Definition at line 447 of file AbstractReader.d.

References AbstractReader::Decoder::char8, and decode.

IReader get inout wchar  x  )  [inline]
 

Extract a wide char value from the current read-position

Reimplemented from IReader.

Definition at line 459 of file AbstractReader.d.

References AbstractReader::Decoder::char16, and decode.

IReader get inout dchar  x  )  [inline]
 

Extract a double char value from the current read-position

Reimplemented from IReader.

Definition at line 471 of file AbstractReader.d.

References AbstractReader::Decoder::char32, and decode.

IReader get inout ubyte[]  x,
uint  elements = uint.max
[inline]
 

Extract an unsigned byte value from the current read-position

Reimplemented from IReader.

Definition at line 483 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int8u, and memory.

IReader get inout byte[]  x,
uint  elements = uint.max
[inline]
 

Extract a byte value from the current read-position

Reimplemented from IReader.

Definition at line 495 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int8, and memory.

IReader get inout ushort[]  x,
uint  elements = uint.max
[inline]
 

Extract an unsigned short value from the current read-position

Reimplemented from IReader.

Definition at line 507 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int16u, and memory.

IReader get inout short[]  x,
uint  elements = uint.max
[inline]
 

Extract a short value from the current read-position

Reimplemented from IReader.

Definition at line 519 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int16, and memory.

IReader get inout uint[]  x,
uint  elements = uint.max
[inline]
 

Extract a unsigned int value from the current read-position

Reimplemented from IReader.

Definition at line 531 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int32u, and memory.

IReader get inout int[]  x,
uint  elements = uint.max
[inline]
 

Extract an int value from the current read-position

Reimplemented from IReader.

Definition at line 543 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int32, and memory.

IReader get inout ulong[]  x,
uint  elements = uint.max
[inline]
 

Extract an unsigned long value from the current read-position

Reimplemented from IReader.

Definition at line 555 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int64u, and memory.

IReader get inout long[]  x,
uint  elements = uint.max
[inline]
 

Extract a long value from the current read-position

Reimplemented from IReader.

Definition at line 567 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::int64, and memory.

IReader get inout float[]  x,
uint  elements = uint.max
[inline]
 

Extract a float value from the current read-position

Reimplemented from IReader.

Definition at line 579 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::float32, and memory.

IReader get inout double[]  x,
uint  elements = uint.max
[inline]
 

Extract a double value from the current read-position

Reimplemented from IReader.

Definition at line 591 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::float64, and memory.

IReader get inout real[]  x,
uint  elements = uint.max
[inline]
 

Extract a real value from the current read-position

Reimplemented from IReader.

Definition at line 603 of file AbstractReader.d.

References IArrayAllocator::allocate(), count(), decode, AbstractReader::Decoder::float80, and memory.

IReader get inout char[]  x,
uint  elements = uint.max
[inline]
 

Reimplemented from IReader.

Reimplemented in TextReader.

Definition at line 613 of file AbstractReader.d.

References IArrayAllocator::allocate(), AbstractReader::Decoder::char8, count(), decode, and memory.

IReader get inout wchar[]  x,
uint  elements = uint.max
[inline]
 

Reimplemented from IReader.

Reimplemented in TextReader.

Definition at line 623 of file AbstractReader.d.

References IArrayAllocator::allocate(), AbstractReader::Decoder::char16, count(), decode, and memory.

IReader get inout dchar[]  x,
uint  elements = uint.max
[inline]
 

Reimplemented from IReader.

Reimplemented in TextReader.

Definition at line 633 of file AbstractReader.d.

References IArrayAllocator::allocate(), AbstractReader::Decoder::char32, count(), decode, and memory.

void reset  )  [inline, inherited]
 

Reimplemented from IArrayAllocator.

Reimplemented in BufferAllocator.

Definition at line 60 of file ArrayAllocator.d.

void bind IReader  reader  )  [inline, inherited]
 

Reimplemented from IArrayAllocator.

Reimplemented in BufferAllocator.

Definition at line 68 of file ArrayAllocator.d.

bool isMutable void *  x  )  [inline, inherited]
 

Reimplemented from IArrayAllocator.

Reimplemented in NativeAllocator, and BufferAllocator.

Definition at line 77 of file ArrayAllocator.d.

void allocate void *[]  x,
uint  count,
uint  width,
BufferDecoder  decoder
[inline, inherited]
 

Reimplemented from IArrayAllocator.

Reimplemented in NativeAllocator, and BufferAllocator.

Definition at line 86 of file ArrayAllocator.d.

References BufferDecoder.


Member Data Documentation

IBuffer buffer [protected]
 

Definition at line 162 of file AbstractReader.d.

Decoder decode [protected]
 

Definition at line 165 of file AbstractReader.d.

Referenced by get(), and setDecoder().

IArrayAllocator memory [private]
 

Definition at line 168 of file AbstractReader.d.

Referenced by get(), and getAllocator().


The documentation for this class was generated from the following file:
Generated on Sat Apr 9 20:11:34 2005 for Mango by doxygen 1.3.6