// for the shortcut options
// (-> line of text <<if expression>> indent statements dedent)+
public override int VisitShortcut_statement(YarnSpinnerParser.Shortcut_statementContext context)
{
string endOfGroupLabel = compiler.RegisterLabel("group_end");
var labels = new List <string>();
int optionCount = 0;
foreach (var shortcut in context.shortcut())
{
string optionDestinationLabel = compiler.RegisterLabel("option_" + (optionCount + 1));
labels.Add(optionDestinationLabel);
string endOfClauseLabel = null;
if (shortcut.shortcut_conditional() != null)
{
endOfClauseLabel = compiler.RegisterLabel("conditional_" + optionCount);
Visit(shortcut.shortcut_conditional().expression());
compiler.Emit(ByteCode.JumpIfFalse, endOfClauseLabel);
}
// getting the lineID from the hashtags if it has one
string lineID = compiler.GetLineID(shortcut.hashtag_block());
string shortcutLine = ShortcutText(shortcut.shortcut_text());
string labelStringID = compiler.program.RegisterString(shortcutLine, compiler.currentNode.name, lineID, shortcut.Start.Line, true);
compiler.Emit(ByteCode.AddOption, labelStringID, optionDestinationLabel);
if (shortcut.shortcut_conditional() != null)
{
compiler.Emit(ByteCode.Label, endOfClauseLabel);
compiler.Emit(ByteCode.Pop);
}
optionCount++;
}
compiler.Emit(ByteCode.ShowOptions);
// TODO: investigate a cleaner way because this is odd...
if (compiler.flags.DisableShuffleOptionsAfterNextSet == true)
{
compiler.Emit(ByteCode.PushBool, false);
compiler.Emit(ByteCode.StoreVariable, VirtualMachine.SpecialVariables.ShuffleOptions);
compiler.Emit(ByteCode.Pop);
compiler.flags.DisableShuffleOptionsAfterNextSet = false;
}
compiler.Emit(ByteCode.Jump);
optionCount = 0;
foreach (var shortcut in context.shortcut())
{
compiler.Emit(ByteCode.Label, labels[optionCount]);
// running through all the children statements of the shortcut
foreach (var child in shortcut.statement())
{
Visit(child);
}
compiler.Emit(ByteCode.JumpTo, endOfGroupLabel);
optionCount++;
}
compiler.Emit(ByteCode.Label, endOfGroupLabel);
compiler.Emit(ByteCode.Pop);
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="YarnSpinnerParser.shortcut_statement"/>.
/// <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 VisitShortcut_statement([NotNull] YarnSpinnerParser.Shortcut_statementContext context)
{
return(VisitChildren(context));
}
// for the shortcut options
// (-> line of text <<if expression>> indent statements dedent)+
public override int VisitShortcut_statement(YarnSpinnerParser.Shortcut_statementContext context)
{
string endOfGroupLabel = compiler.RegisterLabel("group_end");
var labels = new List <string>();
int optionCount = 0;
foreach (var shortcut in context.shortcut())
{
string optionDestinationLabel = compiler.RegisterLabel("option_" + (optionCount + 1));
labels.Add(optionDestinationLabel);
string endOfClauseLabel = null;
if (shortcut.shortcut_conditional() != null)
{
endOfClauseLabel = compiler.RegisterLabel("conditional_" + optionCount);
Visit(shortcut.shortcut_conditional().expression());
compiler.Emit(OpCode.JumpIfFalse, new Operand(endOfClauseLabel));
}
// getting the lineID from the hashtags if it has one
string lineID = compiler.GetLineID(shortcut.hashtag_block());
string shortcutLine = ShortcutText(shortcut.shortcut_text());
string labelStringID = compiler.RegisterString(shortcutLine, compiler.currentNode.Name, lineID, shortcut.Start.Line);
compiler.Emit(OpCode.AddOption, new Operand(labelStringID), new Operand(optionDestinationLabel));
if (shortcut.shortcut_conditional() != null)
{
compiler.currentNode.Labels.Add(endOfClauseLabel, compiler.currentNode.Instructions.Count);
compiler.Emit(OpCode.Pop);
}
optionCount++;
}
compiler.Emit(OpCode.ShowOptions);
compiler.Emit(OpCode.Jump);
optionCount = 0;
foreach (var shortcut in context.shortcut())
{
compiler.currentNode.Labels.Add(labels[optionCount], compiler.currentNode.Instructions.Count);
// running through all the children statements of the shortcut
foreach (var child in shortcut.statement())
{
Visit(child);
}
compiler.Emit(OpCode.JumpTo, new Operand(endOfGroupLabel));
optionCount++;
}
compiler.currentNode.Labels.Add(endOfGroupLabel, compiler.currentNode.Instructions.Count);
compiler.Emit(OpCode.Pop);
return(0);
}
/// <summary>
/// Exit a parse tree produced by <see cref="YarnSpinnerParser.shortcut_statement"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitShortcut_statement([NotNull] YarnSpinnerParser.Shortcut_statementContext context)
{
}
