private bool TryBinaryOperator(string word)
{
BinaryOperatorDef def = this.ctx.GetBinaryOperator(word);
if (def == null)
{
return(false);
}
IExpressionElement left = this.stk_parse.PopOperand(def.prioL, def.assocR);
if (left == null)
{
return(false);
}
this.stk_parse.Push(new BinaryPrefixElement(def, left));
return(true);
}
public BinaryPrefixElement(BinaryOperatorDef def, IExpressionElement left)
{
this.priority = def.prioR;
this.op = def.word;
this.left = left.Expression;
}