public override int VisitVar_node(BRAQParser.Var_nodeContext context)
{
if (TryResolve(context.id_name, out var var_definition_point))
{
if (!assigned[var_definition_point])
{
string msg = $"using unassigned variable {context.id_name.Text}";
Console.WriteLine(msg);
throw new TypesolvingError();
}
declaration[context.id_name] = var_definition_point;
}
else if (TryResolveAsArg(context.id_name, out var argumentDefinition))
{
token_to_argument[context.id_name] = argumentDefinition;
}
else if (PredefsHelper.ResolveType(context.id_name.Text, imported_types) != null)
{
}
else
{
Console.WriteLine($"unknown variable {context.id_name.Text} [Line {context.id_name.Line}]");
throw new UnknownVariableException();
}
return(0);
}
public override Type VisitVar_node(BRAQParser.Var_nodeContext context)
{
if (var_to_local_def.ContainsKey(context.id_name))
{
var def_point = var_to_local_def[context.id_name];
Type t = locals_type[def_point];
return(type_dict[context] = t);
}
try
{
return(type_dict[context] = result_box.argtypes[context.id_name.Text]);
}
catch (InvalidOperationException)
{
}
catch (KeyNotFoundException)
{
}
try
{
Type t = PredefsHelper.ResolveType(context.id_name.Text, imported_names);
if (t == null)
{
throw new InvalidOperationException();
}
return(type_dict[context] = t);
}
catch (InvalidOperationException)
{
Console.WriteLine($"unknown variable {context.id_name.Text} [Line {context.id_name.Line}]");
throw new UnknownVariableException();
}
}
public override int VisitVar_node(BRAQParser.Var_nodeContext context)
{
if (variable_to_declaration.ContainsKey(context.id_name))
{
BRAQParser.Var_stmtContext declaration_point = variable_to_declaration[context.id_name];
int var_id = Array.IndexOf(locals, declaration_point);
il.Emit(OpCodes.Ldloc, var_id);
return(0);
}
int n = current_method.arguments.IndexOf(
current_method.arguments.First(x => x.a == context.id_name.Text)
);
il.Emit(OpCodes.Ldarg, n);
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="BRAQParser.var_node"/>.
/// <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 VisitVar_node([NotNull] BRAQParser.Var_nodeContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="BRAQParser.var_node"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitVar_node([NotNull] BRAQParser.Var_nodeContext context)
{
}
