public override object VisitTerm([NotNull] CMMParser.TermContext context)
{
Object res = VisitChildren(context);
Double op1, op2;
if (context.ChildCount.Equals(3))
{
// 添加计算代码
switch (context.GetChild(1).GetText())
{
case "*":
codes.Add(new IntermediateCode(InstructionType.mul, context.Start.Line));
// 计算当前表达式的值 以便万一要给数组分配大小
// op1 = (Double)expStack.Pop();
// op2 = (Double)expStack.Pop();
// expStack.Push(op2 * op1);
break;
case "/":
codes.Add(new IntermediateCode(InstructionType.div, context.Start.Line));
// op1 = (Double)expStack.Pop();
// op2 = (Double)expStack.Pop();
// 计算当前表达式的值 以便万一要给数组分配大小
// expStack.Push(op2 / op1);
break;
default:
break;
}
}
else
{
// 不用处理
}
return(res);
}
/// <summary>
/// Visit a parse tree produced by <see cref="CMMParser.term"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitTerm([NotNull] CMMParser.TermContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="CMMParser.term"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitTerm([NotNull] CMMParser.TermContext context)
{
}