2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 using System.Collections.Generic;
28 class WordData : Word {
33 bool ongoingResolution;
35 internal WordData(T0Comp owner, string name,
36 ConstData blob, int offset)
41 StackEffect = new SType(0, 1);
44 internal WordData(T0Comp owner, string name,
45 string baseBlobName, int offset)
48 this.baseBlobName = baseBlobName;
50 StackEffect = new SType(0, 1);
53 internal override void Resolve()
58 if (ongoingResolution) {
59 throw new Exception(String.Format(
60 "circular reference in blobs ({0})", Name));
62 ongoingResolution = true;
63 WordData wd = TC.Lookup(baseBlobName) as WordData;
65 throw new Exception(String.Format(
66 "data word '{0}' based on non-data word '{1}'",
72 ongoingResolution = false;
75 internal override void Run(CPU cpu)
78 cpu.Push(new TValue(offset, new TPointerBlob(blob)));
81 internal override List<ConstData> GetDataBlocks()
84 List<ConstData> r = new List<ConstData>();
89 internal override void GenerateCodeElements(List<CodeElement> dst)
92 dst.Add(new CodeElementUInt(0));
93 dst.Add(new CodeElementUIntInt(1, blob.Address + offset));
94 dst.Add(new CodeElementUInt(0));