| public Find ( OperatorShape shape, object op, bool cacheWordOp = true, bool les3InfixOp = false ) : Precedence | ||
| shape | OperatorShape | Specifies which precedence table and rules to use
/// (Prefix, Suffix or Infix). Note: when this is Suffix, "suf" must not be
/// part of the name in |
| op | object | Parsed form of the operator. op must be a Symbol, but /// the parameter has type object to avoid casting Token.Value in the parser. |
| cacheWordOp | bool | |
| les3InfixOp | bool | |
| return | Precedence | |
protected Precedence PrefixPrecedenceOf(Token t)
{
if (t.TypeInt == (int)TT.BQOperator)
{
return(LesPrecedence.Prefix);
}
return(_prec.Find(OperatorShape.Prefix, t.Value));
}
private Precedence?GetPrecedenceIfOperator(ILNode node, Symbol opName, OperatorShape shape, Precedence context)
{
int ac = node.ArgCount();
if ((ac == (int)shape || ac == -(int)shape) && HasTargetIdWithoutPAttrs(node))
{
var bs = node.BaseStyle();
bool naturalOp = Les2PrecedenceMap.IsNaturalOperator(opName.Name);
if ((naturalOp && bs != NodeStyle.PrefixNotation) ||
(bs == NodeStyle.Operator && node.Name != null))
{
var result = _prec.Find(shape, opName);
if (!result.CanAppearIn(context) || !result.CanMixWith(context))
{
return(null);
}
return(result);
}
}
return(null);
}
