private static SyntaxNode ParseLevel0BinOperation(CobaltParser parser)
{
SyntaxNode left = ParseLevel1BinOperation(parser);
if (parser.PeekToken() != null && parser.PeekToken().Class == TokenClass.BIN_OP
&& getPrecedence(parser.PeekToken().Value.ToString()) == 0)
{
string oper = parser.ReadToken().Value.ToString();
BinOp ret = new BinOp(BinaryOperation.BOOL_OR);
ret.AddLeave(left);
ret.AddLeave(ParseLevel0BinOperation(parser));
return ret;
}
return left;
}
private static SyntaxNode ParseLevel6BinOperation(CobaltParser parser)
{
SyntaxNode left = ParseValue(parser);
if (parser.PeekToken() != null && parser.PeekToken().Class == TokenClass.BIN_OP
&& getPrecedence(parser.PeekToken().Value.ToString()) == 6)
{
string oper = parser.ReadToken().Value.ToString();
Console.WriteLine(oper);
BinOp ret = new BinOp(oper == "*" ? BinaryOperation.MUL : BinaryOperation.DIV);
ret.AddLeave(left);
ret.AddLeave(ParseLevel6BinOperation(parser));
return ret;
}
return left;
}
private static SyntaxNode ParseLevel2BinOperation(CobaltParser parser)
{
SyntaxNode left = ParseLevel3BinOperation(parser);
if (parser.PeekToken() != null && parser.PeekToken().Class == TokenClass.BIN_OP
&& getPrecedence(parser.PeekToken().Value.ToString()) == 2)
{
string oper = parser.ReadToken().Value.ToString();
BinOp ret = new BinOp(oper == "==" ? BinaryOperation.EQUAL : BinaryOperation.NOT_EQUAL);
ret.AddLeave(left);
ret.AddLeave(ParseLevel2BinOperation(parser));
return ret;
}
return left;
}
