119 lines
4.0 KiB
C#
119 lines
4.0 KiB
C#
// <copyright file="Symbols.cs" company="Adrian Conlon">
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// Copyright (c) Adrian Conlon. All rights reserved.
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// </copyright>
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namespace EightBit
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{
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using System;
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using System.Collections.Generic;
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using System.IO;
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public class Symbols
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{
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private readonly Dictionary<string, Dictionary<string, Dictionary<string, string>>> parsed;
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public Symbols()
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: this(string.Empty)
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{
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}
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public Symbols(string path)
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{
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this.Labels = new Dictionary<ushort, string>();
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this.Constants = new Dictionary<ushort, string>();
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this.Scopes = new Dictionary<string, ushort>();
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this.Addresses = new Dictionary<string, ushort>();
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this.parsed = new Dictionary<string, Dictionary<string, Dictionary<string, string>>>();
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if (path.Length > 0)
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{
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this.Parse(path);
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this.AssignSymbols();
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this.AssignScopes();
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}
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}
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public Dictionary<ushort, string> Labels { get; }
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public Dictionary<ushort, string> Constants { get; }
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public Dictionary<string, ushort> Scopes { get; }
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public Dictionary<string, ushort> Addresses { get; }
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private void AssignScopes()
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{
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var parsedScopes = this.parsed["scope"];
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foreach (var parsedScopeElement in parsedScopes)
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{
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var parsedScope = parsedScopeElement.Value;
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var name = parsedScope["name"];
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var trimmedName = name.Substring(1, name.Length - 2);
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var size = parsedScope["size"];
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this.Scopes[trimmedName] = ushort.Parse(size);
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}
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}
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private void AssignSymbols()
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{
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var symbols = this.parsed["sym"];
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foreach (var symbolElement in symbols)
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{
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var symbol = symbolElement.Value;
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var name = symbol["name"];
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var trimmedName = name.Substring(1, name.Length - 2);
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var value = symbol["val"].Substring(2);
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var number = Convert.ToUInt16(value, 16);
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var symbolType = symbol["type"];
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if (symbolType == "lab")
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{
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this.Labels[number] = trimmedName;
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this.Addresses[trimmedName] = number;
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}
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else if (symbolType == "equ")
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{
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this.Constants[number] = trimmedName;
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}
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}
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}
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private void Parse(string path)
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{
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using (var reader = new StreamReader(path))
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{
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while (!reader.EndOfStream)
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{
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var line = reader.ReadLine();
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var lineElements = line.Split(' ', '\t');
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if (lineElements.Length == 2)
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{
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var type = lineElements[0];
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var dataElements = lineElements[1].Split(',');
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var data = new Dictionary<string, string>();
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foreach (var dataElement in dataElements)
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{
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var definition = dataElement.Split('=');
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if (definition.Length == 2)
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{
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data[definition[0]] = definition[1];
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}
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}
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if (data.ContainsKey("id"))
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{
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if (!this.parsed.ContainsKey(type))
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{
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this.parsed[type] = new Dictionary<string, Dictionary<string, string>>();
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}
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var id = data["id"];
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data.Remove("id");
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this.parsed[type][id] = data;
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}
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}
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}
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}
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}
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}
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}
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