com.oracle.graal.asm

Class Buffer

java.lang.Object

com.oracle.graal.asm.Buffer

Direct Known Subclasses:

Buffer.BigEndian, Buffer.LittleEndian

abstract class Buffer
extends Object

Code buffer management for the assembler. Support for little endian and big endian architectures is implemented using subclasses.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Buffer.BigEndian
static class	Buffer.LittleEndian

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	data
protected int	position

Constructor Summary

Constructors

Constructor and Description
Buffer()

Method Summary

Modifier and Type	Method and Description
byte[]	close(boolean trimmedCopy) Closes this buffer.
byte[]	copyData(int start, int end)
void	copyInto(byte[] dst, int off, int len) Copies the data from this buffer into a given array.
void	emitByte(int b)
int	emitByte(int b, int pos)
int	emitBytes(byte[] arr, int pos)
void	emitBytes(byte[] arr, int off, int len)
void	emitInt(int b)
abstract int	emitInt(int b, int pos)
void	emitLong(long b)
abstract int	emitLong(long b, int pos)
void	emitShort(int b)
abstract int	emitShort(int b, int pos)
protected void	ensureSize(int length)
int	getByte(int pos)
abstract int	getInt(int pos)
abstract int	getShort(int pos)
int	position()
void	reset()
void	setPosition(int position)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

data

protected byte[] data

position

protected int position

Constructor Detail

Buffer

public Buffer()

Method Detail

position

public int position()

setPosition

public void setPosition(int position)

close

public byte[] close(boolean trimmedCopy)

Closes this buffer. No extra data can be written to this buffer after this call.

Parameters:

trimmedCopy - if true, then a copy of the underlying byte array up to (but not including) position() is returned

Returns:

the data in this buffer or a trimmed copy if trimmedCopy is true

copyData

public byte[] copyData(int start,
                       int end)

copyInto

public void copyInto(byte[] dst,
                     int off,
                     int len)

Copies the data from this buffer into a given array.

Parameters:

dst - the destination array

off - starting position in dst

len - number of bytes to copy

ensureSize

protected void ensureSize(int length)

emitBytes

public void emitBytes(byte[] arr,
                      int off,
                      int len)

emitByte

public void emitByte(int b)

emitShort

public void emitShort(int b)

emitInt

public void emitInt(int b)

emitLong

public void emitLong(long b)

emitBytes

public int emitBytes(byte[] arr,
                     int pos)

emitByte

public int emitByte(int b,
                    int pos)

emitShort

public abstract int emitShort(int b,
                              int pos)

emitInt

public abstract int emitInt(int b,
                            int pos)

emitLong

public abstract int emitLong(long b,
                             int pos)

getByte

public int getByte(int pos)

getShort

public abstract int getShort(int pos)

getInt

public abstract int getInt(int pos)

reset

public void reset()