/*
* 在codeBlock中定义的变量在出了block之后应该全部失效
*/
public override object VisitCodeBlock([NotNull] CMMParser.CodeBlockContext context)
{
int tmp = curLocalVariablesTableLength;
if (context.statements() != null)
{
Visit(context.statements());
}
// codeBlock中新定义的变量全部失效
codes.Add(new IntermediateCode(tmp, InstructionType.delv, context.Stop.Line));
curLocalVariablesTableLength = tmp;
removeVariableBiggerThanK(tmp);
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="CMMParser.codeBlock"/>.
/// <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 VisitCodeBlock([NotNull] CMMParser.CodeBlockContext context)
{
return(VisitChildren(context));
}
public FunctionSymbol(string name, Type retType, Scope scope, LinkedHashMap <string, BuiltInTypeSymbol> orderedArgs, CMMParser.CodeBlockContext context) : base(name, retType, scope)
{
this.orderedArgs = orderedArgs;
this.context = context;
}
/// <summary>
/// Exit a parse tree produced by <see cref="CMMParser.codeBlock"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitCodeBlock([NotNull] CMMParser.CodeBlockContext context)
{
}
