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105 lines
4.0 KiB
C#
105 lines
4.0 KiB
C#
/*
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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 System.Collections.Generic;
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using System.Diagnostics;
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namespace SourceGen {
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/// <summary>
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/// Subclass of Symbol used for symbols defined in the platform or project.
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///
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/// Instances are immutable.
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/// </summary>
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public class DefSymbol : Symbol {
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/// <summary>
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/// Data format descriptor.
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/// </summary>
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public FormatDescriptor DataDescriptor { get; private set; }
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/// <summary>
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/// User-supplied comment.
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/// </summary>
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public string Comment { get; private set; }
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public string Tag { get; private set; }
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/// <summary>
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/// Cross-reference data, generated by the analyzer.
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/// </summary>
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public XrefSet Xrefs { get; private set; }
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// NOTE: might be nice to identify the symbol's origin, e.g. which platform
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// symbol file it was defined in. This could then be stored in a
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// DisplayList line, for benefit of the Info panel.
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/// <summary>
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/// Internal base-object constructor, called by other constructors.
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/// </summary>
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private DefSymbol(string label, int value, Source source, Type type)
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: base(label, value, source, type) {
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Debug.Assert(source == Source.Platform || source == Source.Project);
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Debug.Assert(type == Type.ExternalAddr || type == Type.Constant);
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Xrefs = new XrefSet();
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}
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/// <summary>
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/// Constructor.
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/// </summary>
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/// <param name="label">Symbol's label.</param>
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/// <param name="value">Symbol's value.</param>
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/// <param name="source">Symbol source (general point of origin).</param>
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/// <param name="type">Symbol type.</param>
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/// <param name="formatSubType">Format descriptor sub-type, so we know how the
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/// user wants the value to be displayed.</param>
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/// <param name="comment">End-of-line comment.</param>
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/// <param name="tag">Symbol tag, used for grouping platform symbols.</param>
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public DefSymbol(string label, int value, Source source, Type type,
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FormatDescriptor.SubType formatSubType, string comment, string tag)
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: this(label, value, source, type) {
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Debug.Assert(comment != null);
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Debug.Assert(tag != null);
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// Length doesn't matter; use 1 to get prefab object.
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DataDescriptor = FormatDescriptor.Create(1,
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FormatDescriptor.Type.NumericLE, formatSubType);
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Comment = comment;
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Tag = tag;
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}
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/// <summary>
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/// Constructs a DefSymbol from a Symbol and a format descriptor. This is used
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/// for project symbols.
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/// </summary>
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/// <param name="sym">Base symbol.</param>
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/// <param name="dfd">Format descriptor.</param>
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/// <param name="comment">End-of-line comment.</param>
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public DefSymbol(Symbol sym, FormatDescriptor dfd, string comment)
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: this(sym.Label, sym.Value, sym.SymbolSource, sym.SymbolType) {
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Debug.Assert(comment != null);
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DataDescriptor = dfd;
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Comment = comment;
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Tag = string.Empty;
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}
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public override string ToString() {
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return base.ToString() + ":" + DataDescriptor + ";" + Comment +
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(string.IsNullOrEmpty(Tag) ? "" : " [" + Tag + "]");
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}
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}
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}
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