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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.core.common.util;
Provides low-level read access for signed and unsigned values of size 1, 2, 4, and 8 bytes.
/**
* Provides low-level read access for signed and unsigned values of size 1, 2, 4, and 8 bytes.
*/
public interface TypeReader {
Returns the next byte index to be read. /** Returns the next byte index to be read. */
long getByteIndex();
Sets the next byte index to be read. /** Sets the next byte index to be read. */
void setByteIndex(long byteIndex);
Reads a signed 1 byte value. /** Reads a signed 1 byte value. */
int getS1();
Reads an unsigned 1 byte value. /** Reads an unsigned 1 byte value. */
int getU1();
Reads a signed 2 byte value. /** Reads a signed 2 byte value. */
int getS2();
Reads an unsigned 2 byte value. /** Reads an unsigned 2 byte value. */
int getU2();
Reads a signed 4 byte value. /** Reads a signed 4 byte value. */
int getS4();
Reads an unsigned 4 byte value. /** Reads an unsigned 4 byte value. */
long getU4();
Reads a signed 4 byte value. /** Reads a signed 4 byte value. */
long getS8();
Reads a signed value that has been written using variable byte size
encoding
. /**
* Reads a signed value that has been written using {@link TypeWriter#putSV variable byte size
* encoding}.
*/
long getSV();
Reads a signed variable byte size encoded value that is known to fit into the range of int.
/**
* Reads a signed variable byte size encoded value that is known to fit into the range of int.
*/
default int getSVInt() {
return TypeConversion.asS4(getSV());
}
Reads an unsigned value that has been written using variable byte
size encoding
. /**
* Reads an unsigned value that has been written using {@link TypeWriter#putSV variable byte
* size encoding}.
*/
long getUV();
Reads an unsigned variable byte size encoded value that is known to fit into the range of
int.
/**
* Reads an unsigned variable byte size encoded value that is known to fit into the range of
* int.
*/
default int getUVInt() {
return TypeConversion.asS4(getUV());
}
}