public static Lexer Create(StreamReader reader, ErrorList errors)
{
Lexer lex = new Lexer(reader, errors);
lex.MoveNext();
return lex;
}
private Symbol ParseLValue(Lexer lvalLexer)
{
if (lvalLexer.CurrentToken != Token.Identifier)
{
AddLValueError();
return null;
}
Symbol symbol = _context.SymbolTable.Lookup(lvalLexer.GetLexeme());
if (symbol == null)
{
AddLValueError();
return null;
}
IrisType lhs = symbol.Type;
lvalLexer.MoveNext();
if (lhs.IsArray)
{
// We should have an open bracket (We don't support changing the array value itself)
if (lvalLexer.CurrentToken != Token.ChrOpenBracket)
{
AddLValueError();
return null;
}
EmitLoadSymbol(symbol, SymbolLoadMode.Raw);
lvalLexer.MoveNext();
if (lvalLexer.CurrentToken != Token.Number)
{
AddLValueError();
return null;
}
int index = lvalLexer.ParseInteger();
MethodGenerator.PushIntConst(index);
lvalLexer.MoveNext();
if (lvalLexer.CurrentToken != Token.ChrCloseBracket)
{
AddLValueError();
return null;
}
}
else if (lhs.IsByRef)
{
EmitLoadSymbol(symbol, SymbolLoadMode.Raw);
}
return symbol;
}
