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* The Universal Permissive License (UPL), Version 1.0
*
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* (a) the Software, and
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.js.runtime.builtins;
import java.nio.ByteBuffer;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.array.TypedArray;
public class TypedArrayAccess {
public static final TypedArrayAccess SINGLETON = new TypedArrayAccess();
protected TypedArrayAccess() {
}
public int getLength(DynamicObject thisObj) {
return ((JSArrayBufferViewBase) thisObj).length;
}
public void setLength(DynamicObject thisObj, int length) {
((JSArrayBufferViewBase) thisObj).length = length;
}
public int getOffset(DynamicObject thisObj) {
return ((JSArrayBufferViewBase) thisObj).offset;
}
public void setOffset(DynamicObject thisObj, int offset) {
((JSArrayBufferViewBase) thisObj).offset = offset;
}
public byte[] getByteArray(DynamicObject thisObj) {
byte[] byteArray = ((JSArrayBufferObject.Heap) getArrayBuffer(thisObj)).getByteArray();
if (byteArray == null) {
CompilerDirectives.transferToInterpreter();
throw Errors.createTypeErrorDetachedBuffer();
}
return byteArray;
}
public ByteBuffer getByteBuffer(DynamicObject thisObj) {
ByteBuffer byteBuffer = ((JSArrayBufferObject.DirectBase) getArrayBuffer(thisObj)).getByteBuffer();
if (byteBuffer == null) {
CompilerDirectives.transferToInterpreter();
throw Errors.createTypeErrorDetachedBuffer();
}
return byteBuffer;
}
public DynamicObject getArrayBuffer(DynamicObject thisObj) {
assert JSArrayBufferView.isJSArrayBufferView(thisObj);
return ((JSArrayBufferViewBase) thisObj).getArrayBuffer();
}
public TypedArray getArrayType(Object thisObj) {
return ((JSTypedArrayObject) thisObj).arrayType;
}
public void setArrayType(DynamicObject thisObj, TypedArray arrayType) {
((JSTypedArrayObject) thisObj).arrayType = arrayType;
}
public String getTypedArrayName(DynamicObject thisObj) {
return getArrayType(thisObj).getFactory().getName();
}
}