91 lines
3.1 KiB
Java
91 lines
3.1 KiB
Java
package org.capnproto;
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public final class StructBuilder {
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public final SegmentBuilder segment;
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public final int data; // byte offset to data section
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public final int pointers; // word offset of pointer section
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public final int dataSize; // in bits
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public final short pointerCount;
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public final byte bit0Offset;
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public StructBuilder(SegmentBuilder segment, int data,
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int pointers, int dataSize, short pointerCount,
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byte bit0Offset) {
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this.segment = segment;
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this.data = data;
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this.pointers = pointers;
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this.dataSize = dataSize;
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this.pointerCount = pointerCount;
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this.bit0Offset = bit0Offset;
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}
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public final boolean getBooleanField(int offset) {
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int bitOffset = (offset == 0 ? this.bit0Offset : offset);
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int position = this.data + (bitOffset / 8);
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return (this.segment.buffer.get(position) & (1 << (bitOffset % 8))) != 0;
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}
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public final void setBooleanField(int offset, boolean value) {
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int bitOffset = offset;
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if (offset == 0) { bitOffset = this.bit0Offset; }
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byte bitnum = (byte)(bitOffset % 8);
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int position = this.data + (bitOffset / 8);
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byte oldValue = this.segment.buffer.get(position);
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this.segment.buffer.put(position,
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(byte)((oldValue & (~(1 << bitnum))) | (( value ? 1 : 0) << bitnum)));
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}
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public final byte getByteField(int offset) {
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return this.segment.buffer.get(this.data + offset);
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}
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public final void setByteField(int offset, byte value) {
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this.segment.buffer.put(this.data + offset, value);
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}
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public final short getShortField(int offset) {
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return this.segment.buffer.getShort(this.data + offset * 2);
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}
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public final void setShortField(int offset, short value) {
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this.segment.buffer.putShort(this.data + offset * 2, value);
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}
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public final int getIntField(int offset) {
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return this.segment.buffer.getInt(this.data + offset * 4);
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}
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public final void setIntField(int offset, int value) {
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this.segment.buffer.putInt(this.data + offset * 4, value);
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}
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public final long getLongField(int offset) {
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return this.segment.buffer.getLong(this.data + offset * 8);
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}
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public final void setLongField(int offset, long value) {
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this.segment.buffer.putLong(this.data + offset * 8, value);
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}
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public final float getFloatField(int offset) {
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return this.segment.buffer.getFloat(this.data + offset * 4);
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}
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public final void setFloatField(int offset, float value) {
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this.segment.buffer.putFloat(this.data + offset * 4, value);
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}
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public final double getDoubleField(int offset) {
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return this.segment.buffer.getDouble(this.data + offset * 8);
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}
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public final void setDoubleField(int offset, double value) {
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this.segment.buffer.putDouble(this.data + offset * 8, value);
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}
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public final PointerBuilder getPointerField(int index) {
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return new PointerBuilder(this.segment, this.pointers + index);
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}
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}
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