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// ILToken.cs
// Author: Sergey Chaban (serge@wildwestsoftware.com)
using System;
namespace Mono.ILASM {
public class ILToken : ICloneable {
internal int token;
internal object val;
public static readonly ILToken Invalid;
public static readonly ILToken EOF;
public static readonly ILToken Dot;
public static readonly ILToken OpenBrace;
public static readonly ILToken CloseBrace;
public static readonly ILToken OpenBracket;
public static readonly ILToken CloseBracket;
public static readonly ILToken OpenParens;
public static readonly ILToken CloseParens;
public static readonly ILToken Comma;
public static readonly ILToken Colon;
public static readonly ILToken DoubleColon;
public static readonly ILToken Semicolon;
public static readonly ILToken Assign;
public static readonly ILToken Star;
public static readonly ILToken Ampersand;
public static readonly ILToken Plus;
public static readonly ILToken Slash;
public static readonly ILToken Bang;
public static readonly ILToken Ellipsis;
public static readonly ILToken Dash;
public static readonly ILToken OpenAngleBracket;
public static readonly ILToken CloseAngleBracket;
private static readonly ILToken [] punctuations;
/// <summary>
/// </summary>
static ILToken ()
{
Invalid = new ILToken (-1, "invalid");
EOF = new ILToken (Token.EOF, "eof");
Dot = new ILToken (Token.DOT, ".");
OpenBrace = new ILToken (Token.OPEN_BRACE, "{");
CloseBrace = new ILToken (Token.CLOSE_BRACE, "}");
OpenBracket = new ILToken (Token.OPEN_BRACKET, "[");
CloseBracket = new ILToken (Token.CLOSE_BRACKET, "]");
OpenParens = new ILToken (Token.OPEN_PARENS, "(");
CloseParens = new ILToken (Token.CLOSE_PARENS, ")");
Comma = new ILToken (Token.COMMA, ",");
Colon = new ILToken (Token.COLON, ":");
DoubleColon = new ILToken (Token.DOUBLE_COLON, "::");
Semicolon = new ILToken (Token.SEMICOLON, ";");
Assign = new ILToken (Token.ASSIGN, "=");
Star = new ILToken (Token.STAR, "*");
Ampersand = new ILToken (Token.AMPERSAND, "&");
Plus = new ILToken (Token.PLUS, "+");
Slash = new ILToken (Token.SLASH, "/");
Bang = new ILToken (Token.BANG, "!");
Ellipsis = new ILToken (Token.ELLIPSIS, "...");
Dash = new ILToken (Token.DASH, "-");
OpenAngleBracket = new ILToken (Token.OPEN_ANGLE_BRACKET, "<");
CloseAngleBracket = new ILToken (Token.CLOSE_ANGLE_BRACKET, ">");
punctuations = new ILToken [] {
OpenBrace, CloseBrace,
OpenBracket, CloseBracket,
OpenParens, CloseParens,
Comma, Colon, Semicolon,
Assign, Star, Ampersand,
Plus, Slash, Bang,
OpenAngleBracket, CloseAngleBracket
};
}
/// <summary>
/// </summary>
public ILToken ()
{
}
/// <summary>
/// </summary>
/// <param name="token"></param>
/// <param name="val"></param>
public ILToken (int token, object val)
{
this.token = token;
this.val = val;
}
/// <summary>
/// </summary>
/// <param name="that"></param>
public ILToken (ILToken that)
{
this.token = that.token;
this.val = that.val;
}
/// <summary>
/// </summary>
public int TokenId {
get {
return token;
}
}
/// <summary>
/// </summary>
public object Value {
get {
return val;
}
}
/// <summary>
/// </summary>
/// <param name="that"></param>
public virtual void CopyFrom (ILToken that)
{
this.token = that.token;
this.val = that.val;
}
/// <summary>
/// </summary>
/// <returns></returns>
public virtual object Clone ()
{
return new ILToken (this);
}
/// <summary>
/// </summary>
/// <returns></returns>
public override int GetHashCode ()
{
int h = token;
if (val != null) h ^= val.GetHashCode ();
return h;
}
/// <summary>
/// </summary>
/// <returns></returns>
public override string ToString ()
{
return (token.ToString() + " : " + (val != null ? val.ToString () : "<null>"));
}
/// <summary>
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public override bool Equals (object o)
{
bool res = (o != null);
if (res) {
res = Object.ReferenceEquals (this, o);
if (!res) {
res = o is ILToken;
if (res) {
ILToken that = o as ILToken;
res = (this.token == that.token) && (this.val.Equals (that.val));
}
}
}
return res;
}
private static bool EqImpl (ILToken t1, ILToken t2)
{
bool res = false;
if ((t1 as object) != null) {
res = t1.Equals (t2);
} else {
res = ((t2 as object) == null);
}
return res;
}
/// <summary>
/// </summary>
/// <param name="t1"></param>
/// <param name="t2"></param>
/// <returns></returns>
public static bool operator == (ILToken t1, ILToken t2)
{
return EqImpl (t1, t2);
}
/// <summary>
/// </summary>
/// <param name="t1"></param>
/// <param name="t2"></param>
/// <returns></returns>
public static bool operator != (ILToken t1, ILToken t2)
{
return !EqImpl (t1, t2);
}
/// <summary>
/// </summary>
/// <param name="ch"></param>
/// <returns></returns>
public static ILToken GetPunctuation (int ch)
{
int id = "{}[](),:;=*&+/!<>".IndexOf ((char) ch);
ILToken res = null;
if (id != -1) {
res = punctuations [id];
}
return res;
}
}
}
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