private static string CreateErrorMessage(ET errorType, Id errorId,
byte errorColumn, int errorLine)
{
string[] codes = SourceCode.Split((char)TT.LF);
HIDebug.Assert(codes.Length > errorLine);
return(string.Format(Id.ErrorFormat.ToText(), codes[errorLine],
"".PadLeft(errorColumn), errorType, errorId.ToText(), errorLine + 1));
}
public Symbol(Token token)
{
HIDebug.AssertEqual(token.Type, TT.Identifier);
if (symbols.TryGetValue(token.Text, out _))
{
throw new HIException(ET.NameError, Id.NameAlreadyDefined, token);
}
Token = token;
symbols[token.Text] = this;
}
public Token(TT type, string identifier, byte column, int line)
{
HIDebug.Assert(type == TT.Identifier || type == TT.String);
Type = type;
Column = column;
Line = line;
if (type == TT.Identifier && Keyword.Find(identifier, out KT keywordType))
{
Type = TT.Keyword;
KeywordType = keywordType;
}
else
{
StringId = strings.Count;
strings.Add(identifier);
}
}
public override long Visit()
{
long leftValue = Left.Visit();
long rightValue = Right.Visit();
switch (Operator.Type)
{
case TT.Plus: return(leftValue + rightValue);
case TT.Minus: return(leftValue - rightValue);
case TT.Mul: return(leftValue * rightValue);
case TT.Div:
if (rightValue == 0)
{
throw new HIException(ET.ZeroDivisionError, Id.DivisionByZero, Operator.Column);
}
return(leftValue / rightValue);
}
HIDebug.Fail(Operator.Type, Id.InvalidOperator.ToText());
return(0);
}
public IntegerNode(Token integerToken)
{
HIDebug.AssertEqual(integerToken.Type, TT.Integer);
Integer = integerToken;
}
public StringNode(Token stringToken)
{
HIDebug.AssertEqual(stringToken.Type, TT.String);
str = stringToken;
}
