mirror of
https://github.com/zap-proto/d.git
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zeekay
fe49a3b74f
Rename the capnproto-dlang fork to zap-dlang: source/capnproto/ -> source/zap/ (module/import paths capnproto.* -> zap.*), compiler plugin capnpc-dlang -> zapc-dlang, schemas .capnp -> .zap, Makefile pkg-config/-lcapnp -> zap/-lzap, README/CONTRIBUTORS rebranded with canonical zap-proto.io/zap-proto.dev/ github.com/zap-proto/d links. Pure mechanical rename: no logic changes. Upstream Sandstorm MIT headers preserved.
267 lines
8.1 KiB
D
267 lines
8.1 KiB
D
// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
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// Licensed under the MIT License:
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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module zap.StructReader;
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import std.string : startsWith;
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import std.traits;
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import java.nio.ByteBuffer;
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import zap.AnyPointer;
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import zap.Constants;
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import zap.Data;
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import zap.ElementSize;
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import zap.SegmentReader;
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import zap.StructList;
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import zap.Text;
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import zap.WireHelpers;
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struct StructReader
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{
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public: //Variables.
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SegmentReader* segment;
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int data; //Byte offset to data section.
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int pointers; //Word offset of pointer section.
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int dataSize; //In bits.
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short pointerCount;
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int nestingLimit;
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public: //Methods.
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this(SegmentReader* segment, int data, int pointers, int dataSize, short pointerCount, int nestingLimit)
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{
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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.nestingLimit = nestingLimit;
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}
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bool _getBoolField(int offset)
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{
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if(offset < this.dataSize)
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{
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ubyte b = this.segment.buffer.get!ubyte(this.data + offset / 8);
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return (b & (1 << (offset % 8))) != 0;
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}
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return false;
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}
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bool _getBoolField(int offset, bool mask)
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{
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return this._getBoolField(offset) ^ mask;
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}
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byte _getByteField(int offset)
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{
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if((offset + 1) * 8 <= this.dataSize)
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return this.segment.buffer.get!byte(this.data + offset);
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return 0;
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}
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byte _getByteField(int offset, byte mask)
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{
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return cast(byte)(this._getByteField(offset) ^ mask);
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}
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ubyte _getUbyteField(int offset)
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{
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if((offset + 1) * 8 <= this.dataSize)
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return this.segment.buffer.get!ubyte(this.data + offset);
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return 0;
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}
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ubyte _getUbyteField(int offset, ubyte mask)
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{
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return cast(ubyte)(this._getByteField(offset) ^ mask);
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}
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short _getShortField(int offset)
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{
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if((offset + 1) * 16 <= this.dataSize)
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return this.segment.buffer.get!short(this.data + offset * 2);
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return 0;
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}
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short _getShortField(int offset, short mask)
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{
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return cast(short)(this._getShortField(offset) ^ mask);
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}
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ushort _getUshortField(int offset)
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{
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if((offset + 1) * 16 <= this.dataSize)
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return cast(ushort)this.segment.buffer.get!short(this.data + offset * 2);
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return 0;
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}
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ushort _getUshortField(int offset, ushort mask)
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{
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return cast(ushort)(this._getUshortField(offset) ^ mask);
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}
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int _getIntField(int offset)
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{
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if((offset + 1) * 32 <= this.dataSize)
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return this.segment.buffer.get!int(this.data + offset * 4);
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return 0;
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}
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int _getIntField(int offset, int mask)
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{
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return this._getIntField(offset) ^ mask;
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}
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uint _getUintField(int offset)
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{
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if((offset + 1) * 32 <= this.dataSize)
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return cast(uint)this.segment.buffer.get!int(this.data + offset * 4);
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return 0;
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}
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uint _getUintField(int offset, uint mask)
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{
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return this._getUintField(offset) ^ mask;
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}
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long _getLongField(int offset)
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{
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if((offset + 1) * 64 <= this.dataSize)
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return this.segment.buffer.get!long(this.data + offset * 8);
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return 0;
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}
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long _getLongField(int offset, long mask)
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{
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return this._getLongField(offset) ^ mask;
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}
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ulong _getUlongField(int offset)
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{
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if((offset + 1) * 64 <= this.dataSize)
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return cast(ulong)this.segment.buffer.get!long(this.data + offset * 8);
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return 0;
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}
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ulong _getUlongField(int offset, ulong mask)
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{
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return this._getUlongField(offset) ^ mask;
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}
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float _getFloatField(int offset)
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{
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if((offset + 1) * 32 <= this.dataSize)
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return this.segment.buffer.get!float(this.data + offset * 4);
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return 0;
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}
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float _getFloatField(int offset, int mask)
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{
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if((offset + 1) * 32 <= this.dataSize)
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return intBitsToFloat(this.segment.buffer.get!int(this.data + offset * 4) ^ mask);
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return intBitsToFloat(mask);
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}
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double _getDoubleField(int offset)
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{
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if((offset + 1) * 64 <= this.dataSize)
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return this.segment.buffer.get!double(this.data + offset * 8);
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return 0;
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}
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double _getDoubleField(int offset, long mask)
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{
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if((offset + 1) * 64 <= this.dataSize)
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return longBitsToDouble(this.segment.buffer.get!long(this.data + offset * 8) ^ mask);
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return longBitsToDouble(mask);
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}
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bool _pointerFieldIsNull(int ptrIndex)
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{
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return this.segment.buffer.get!long((this.pointers + ptrIndex) * Constants.BYTES_PER_WORD) == 0;
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}
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T.Reader _getPointerField(T)(int ptrIndex)
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{
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alias name = fullyQualifiedName!T;
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auto segment = cast(SegmentReader*)&SegmentReader.EMPTY;
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int pointer = 0;
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if(ptrIndex < this.pointerCount)
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{
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segment = this.segment;
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pointer = this.pointers + ptrIndex;
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}
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static if(is(T : AnyPointer))
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return T.Reader(segment, pointer, nestingLimit);
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else static if(is(T : Data))
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return WireHelpers.readDataPointer(segment, pointer, null, 0, 0);
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else static if(is(T : Text))
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return WireHelpers.readTextPointer(segment, pointer, null, 0, 0);
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else static if(name.startsWith("zap.DataList") || name.startsWith("zap.EnumList") || name.startsWith("zap.PrimitiveList") || name.startsWith("zap.ListList") || name.startsWith("zap.StructList") || name.startsWith("zap.TextList"))
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return WireHelpers.readListPointer!(T.Reader)(segment, pointer, null, 0, T.elementSize, this.nestingLimit);
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else
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return WireHelpers.readStructPointer!(T.Reader)(segment, pointer, null, 0, nestingLimit);
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}
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T.Reader _getPointerField(T)(int ptrIndex, SegmentReader* defaultSegment, int defaultOffset)
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{
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alias name = fullyQualifiedName!T;
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auto segment = cast(SegmentReader*)&SegmentReader.EMPTY;
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int pointer = 0;
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if(ptrIndex < this.pointerCount)
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{
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segment = this.segment;
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pointer = this.pointers + ptrIndex;
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}
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static if(name.startsWith("zap.DataList") || name.startsWith("zap.EnumList") || name.startsWith("zap.PrimitiveList") || name.startsWith("zap.ListList") || name.startsWith("zap.StructList") || name.startsWith("zap.TextList"))
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return WireHelpers.readListPointer!(T.Reader)(segment, pointer, defaultSegment, defaultOffset, T.elementSize, this.nestingLimit);
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else
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return WireHelpers.readStructPointer!(T.Reader)(segment, pointer, defaultSegment, defaultOffset, this.nestingLimit);
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}
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StructList.Reader!(T.Reader) _getPointerListField(T)(int ptrIndex, SegmentReader* defaultSegment, int defaultOffset)
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{
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if(ptrIndex < this.pointerCount)
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return WireHelpers.readListPointer!(StructList.Reader!(T.Reader))(this.segment, this.pointers + ptrIndex, defaultSegment, defaultOffset, ElementSize.INLINE_COMPOSITE, this.nestingLimit);
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return WireHelpers.readListPointer!(StructList.Reader!(T.Reader))(cast(SegmentReader*)&SegmentReader.EMPTY, 0, defaultSegment, defaultOffset, ElementSize.INLINE_COMPOSITE, this.nestingLimit);
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}
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T.Reader _getPointerField(T)(int ptrIndex, ByteBuffer* defaultBuffer, int defaultOffset, int defaultSize)
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{
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auto segment = cast(SegmentReader*)&SegmentReader.EMPTY;
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int pointer = 0;
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if(ptrIndex < this.pointerCount)
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{
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segment = this.segment;
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pointer = this.pointers + ptrIndex;
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}
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static if(is(T : Data))
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return WireHelpers.readDataPointer(segment, pointer, defaultBuffer, defaultOffset, defaultSize);
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else static if(is(T : Text))
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return WireHelpers.readTextPointer(segment, pointer, defaultBuffer, defaultOffset, defaultSize);
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else
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static assert(0);
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}
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}
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