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59 lines
2.1 KiB
C#
59 lines
2.1 KiB
C#
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/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using CommonUtil;
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namespace PluginCommon {
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/// <summary>
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/// Read-only wrapper around AddressMap.
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///
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/// Instance is immutable, though in theory the underlying AddressMap could change if
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/// some other code has a reference to it.
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/// </summary>
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/// <remarks>
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/// This is currently simple enough that it could just be an interface, but I don't want
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/// to rely on that remaining true.
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/// </remarks>
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public class AddressTranslate {
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private AddressMap mAddrMap;
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public AddressTranslate(AddressMap addrMap) {
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mAddrMap = addrMap;
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}
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/// <summary>
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/// Determines the file offset that best contains the specified target address.
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/// </summary>
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/// <param name="srcOffset">Offset of the address reference. Only matters when
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/// multiple file offsets map to the same address.</param>
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/// <param name="targetAddr">Address to look up.</param>
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/// <returns>The file offset, or -1 if the address falls outside the file.</returns>
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public int AddressToOffset(int srcOffset, int targetAddr) {
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return mAddrMap.AddressToOffset(srcOffset, targetAddr);
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}
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/// <summary>
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/// Converts a file offset to an address.
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/// </summary>
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/// <param name="offset">File offset.</param>
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/// <returns>24-bit address.</returns>
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public int OffsetToAddress(int offset) {
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return mAddrMap.OffsetToAddress(offset);
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}
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}
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}
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