public override int VisitBlock(BRAQParser.BlockContext context)
{
var prev_outer = outer_scope;
var prev_local = local_scope;
outer_scope = outer_scope.Concat(local_scope)
.GroupBy(x => x.Key)
.ToDictionary(x => x.Key, x => x.Last().Value);
// создаём словарь, в котором происходит объединение локальных и внешних переменных с возможным замещением
local_scope = new Dictionary <string, BRAQParser.Var_stmtContext>();
//для блока пока нет локальных переменных
base.VisitBlock(context);
//scope = outer_scope;
local_scope = prev_local;
outer_scope = prev_outer;
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="BRAQParser.block"/>.
/// <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 VisitBlock([NotNull] BRAQParser.BlockContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="BRAQParser.block"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitBlock([NotNull] BRAQParser.BlockContext context)
{
}
