public override object VisitDeclareExpression([NotNull] TinyScriptParser.DeclareExpressionContext context)
{
var type = GetDeclType(context, context.basicType().GetText());
foreach (var assign in context.declarators().assign())
{
var name = assign.Identifier().GetText();
Variable obj;
if (_variables.TryGetValue(name, out obj))
{
throw context.Exception("Variable [{0}] already defined.", name);
}
_variables.Add(name, new Variable {
Type = type
});
}
return(VisitDeclarators(context.declarators()));
}
public override object VisitDeclareExpression([NotNull] TinyScriptParser.DeclareExpressionContext context)
{
var assigns = context.declarators().assign();
foreach (var assign in assigns)
{
var name = assign.Identifier().GetText();
VarValue obj;
if (Variables.TryGetValue(name, out obj))
{
if (obj.StartIndex == assign.Start.StartIndex)
{
return(base.VisitDeclareExpression(context));
}
throw context.Exception("Variable [{0}] already defined.", name);
}
switch (context.basicType().GetText())
{
case "decimal":
Variables.Add(name, new VarValue(assign.Start.StopIndex, (decimal)0));
break;
case "string":
Variables.Add(name, new VarValue(assign.Start.StopIndex, ""));
break;
case "bool":
Variables.Add(name, new VarValue(assign.Start.StopIndex, false));
break;
case "var":
Variables.Add(name, new VarValue(assign.Start.StopIndex, null));
break;
}
}
return(base.VisitDeclareExpression(context));
}
/// <summary>
/// Visit a parse tree produced by <see cref="TinyScriptParser.declareExpression"/>.
/// <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 VisitDeclareExpression([NotNull] TinyScriptParser.DeclareExpressionContext context)
{
return(VisitChildren(context));
}
