/**
* 读取identifier的text，然后从函数地址表中读取该函数的中间代码起始地址
* 调用call指令
* 将expression List压入被调用函数的局部变量表中
*/
public override object VisitCallStatement([NotNull] CMMParser.CallStatementContext context)
{
// 看一下有多少参数
VisitExpressionList(context.expressionList());
int count = 0;
if (context.expressionList() != null)
{
count = getLen(context.expressionList());
}
//
IntermediateCode code1 = new IntermediateCode(count, InstructionType.push, context.Start.Line);
codes.Add(code1);
IntermediateCode code0 = new IntermediateCode(context.Identifier().GetText(), InstructionType.call, context.Start.Line);
codes.Add(code0);
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="CMMParser.callStatement"/>.
/// <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 VisitCallStatement([NotNull] CMMParser.CallStatementContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="CMMParser.callStatement"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitCallStatement([NotNull] CMMParser.CallStatementContext context)
{
}
