org.pkl.thirdparty.truffle.api.interop.InvalidBufferOffsetException Maven / Gradle / Ivy
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package org.pkl.thirdparty.truffle.api.interop;
import org.pkl.thirdparty.truffle.api.CompilerDirectives;
import org.pkl.thirdparty.truffle.api.CompilerDirectives.TruffleBoundary;
/**
* An exception thrown if a buffer access if out of bounds. Interop exceptions are supposed to be
* caught and converted into a guest language error by the caller.
*
* @see #getByteOffset()
* @see #getLength()
* @see InteropLibrary
* @since 21.1
*/
public final class InvalidBufferOffsetException extends InteropException {
private static final long serialVersionUID = 1857745390734085837L;
private final long byteOffset;
private final long length;
private InvalidBufferOffsetException(long byteOffset, long length) {
super(null);
this.byteOffset = byteOffset;
this.length = length;
}
private InvalidBufferOffsetException(long byteOffset, long length, Throwable cause) {
super(null, cause);
this.byteOffset = byteOffset;
this.length = length;
}
/**
* Returns the start byte offset of the invalid access from the start of the buffer.
*
* @since 21.1
*/
public long getByteOffset() {
return byteOffset;
}
/**
* Returns the length of the accessed memory region in bytes starting from {@link #getByteOffset
* the start byte offset}.
*
* @since 21.1
*/
public long getLength() {
return length;
}
/**
* {@inheritDoc}
*
* @since 21.1
*/
@Override
@TruffleBoundary
public String getMessage() {
return "Invalid buffer access of length " + length + " at byteOffset " + byteOffset + ".";
}
/**
* Creates an {@link InvalidBufferOffsetException} to indicate that a buffer access is invalid.
*
* This method is designed to be used in {@link CompilerDirectives#inCompiledCode() compiled}
* code paths.
*
* @param byteOffset the start byteOffset of the invalid access
* @param length the length of the accessed memory region in bytes starting from
* {@code byteOffset}
* @since 21.1
*/
public static InvalidBufferOffsetException create(long byteOffset, long length) {
return new InvalidBufferOffsetException(byteOffset, length);
}
/**
* Creates an {@link InvalidBufferOffsetException} to indicate that a buffer access is invalid.
*
* In addition a cause may be provided. The cause should only be set if the guest language code
* caused this problem. An example for this is a language specific proxy mechanism that invokes
* guest language code to describe an object. If the guest language code fails to execute and
* this interop exception is a valid interpretation of the error, then the error should be
* provided as cause. The cause can then be used by the source language as new exception cause
* if the {@link InteropException} is translated to a source language error. If the
* {@link InteropException} is discarded, then the cause will most likely get discarded by the
* source language as well. Note that the cause must be of type
* {@link org.pkl.thirdparty.truffle.api.exception.AbstractTruffleException} otherwise an
* {@link IllegalArgumentException} is thrown.
*
* This method is designed to be used in {@link CompilerDirectives#inCompiledCode() compiled}
* code paths.
*
* @param byteOffset the start byteOffset of the invalid access
* @param length the length of the accessed memory region in bytes starting from
* {@code byteOffset}.
* @param cause the guest language exception that caused the error.
* @since 21.1
*/
public static InvalidBufferOffsetException create(long byteOffset, long length, Throwable cause) {
return new InvalidBufferOffsetException(byteOffset, length, cause);
}
}