EightBitNet/M6502/Symbols.cs

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