// if statement
// ifclause (elseifclause)* (elseclause)? <<endif>>
public override int VisitIf_statement(YarnSpinnerParser.If_statementContext context)
{
// label to give us a jump point for when the if finishes
string endOfIfStatementLabel = compiler.RegisterLabel("endif");
// handle the if
var ifClause = context.if_clause();
generateClause(endOfIfStatementLabel, ifClause.statement(), ifClause.expression());
// all elseifs
foreach (var elseIfClause in context.else_if_clause())
{
generateClause(endOfIfStatementLabel, elseIfClause.statement(), elseIfClause.expression());
}
// the else, if there is one
var elseClause = context.else_clause();
if (elseClause != null)
{
generateClause(endOfIfStatementLabel, elseClause.statement(), null);
}
compiler.Emit(ByteCode.Label, endOfIfStatementLabel);
return(0);
}
// if statement ifclause (elseifclause)* (elseclause)? <<endif>>
public override int VisitIf_statement(YarnSpinnerParser.If_statementContext context)
{
context.AddErrorNode(null);
// label to give us a jump point for when the if finishes
string endOfIfStatementLabel = this.compiler.RegisterLabel("endif");
// handle the if
var ifClause = context.if_clause();
this.GenerateClause(endOfIfStatementLabel, ifClause, ifClause.statement(), ifClause.expression());
// all elseifs
foreach (var elseIfClause in context.else_if_clause())
{
this.GenerateClause(endOfIfStatementLabel, elseIfClause, elseIfClause.statement(), elseIfClause.expression());
}
// the else, if there is one
var elseClause = context.else_clause();
if (elseClause != null)
{
this.GenerateClause(endOfIfStatementLabel, elseClause, elseClause.statement(), null);
}
this.compiler.CurrentNode.Labels.Add(endOfIfStatementLabel, this.compiler.CurrentNode.Instructions.Count);
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="YarnSpinnerParser.if_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 VisitIf_statement([NotNull] YarnSpinnerParser.If_statementContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="YarnSpinnerParser.if_statement"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitIf_statement([NotNull] YarnSpinnerParser.If_statementContext context)
{
}
