public override object VisitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
var ifRules = context.ifElseTemplateBody().ifConditionRule();
for (var idx = 0; idx < ifRules.Length; idx++)
{
var conditionNode = ifRules[idx].ifCondition();
var ifExpr = conditionNode.IF() != null;
var elseIfExpr = conditionNode.ELSEIF() != null;
var elseExpr = conditionNode.ELSE() != null;
var node = ifExpr ? conditionNode.IF() :
elseIfExpr?conditionNode.ELSEIF() :
conditionNode.ELSE();
if (node.GetText().Count(u => u == ' ') > 1 ||
(idx > 0 && ifExpr) ||
(idx > 0 && idx < ifRules.Length - 1 && !elseIfExpr))
{
return(null);
}
if (!elseExpr && (ifRules[idx].ifCondition().expression().Length == 1))
{
FillInExpression(conditionNode.expression(0));
}
if (ifRules[idx].normalTemplateBody() != null)
{
Visit(ifRules[idx].normalTemplateBody());
}
}
return(null);
}
public override object VisitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
var ifRules = context.ifElseTemplateBody().ifConditionRule();
foreach (var ifRule in ifRules)
{
if (EvalCondition(ifRule.ifCondition()) && ifRule.normalTemplateBody() != null)
{
return(Visit(ifRule.normalTemplateBody()));
}
}
return(null);
}
public override AnalyzerResult VisitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
var result = new AnalyzerResult();
var ifRules = context.ifElseTemplateBody().ifConditionRule();
foreach (var ifRule in ifRules)
{
var expression = ifRule.ifCondition().EXPRESSION(0);
if (expression != null)
{
result.Union(AnalyzeExpression(expression.GetText()));
}
if (ifRule.normalTemplateBody() != null)
{
result.Union(Visit(ifRule.normalTemplateBody()));
}
}
return result;
}
public override List <Diagnostic> VisitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
var result = new List <Diagnostic>();
var ifRules = context.ifElseTemplateBody().ifConditionRule();
for (var idx = 0; idx < ifRules.Length; idx++)
{
var conditionNode = ifRules[idx].ifCondition();
var ifExpr = conditionNode.IF() != null;
var elseIfExpr = conditionNode.ELSEIF() != null;
var elseExpr = conditionNode.ELSE() != null;
var node = ifExpr ? conditionNode.IF() :
elseIfExpr?conditionNode.ELSEIF() :
conditionNode.ELSE();
if (node.GetText().Count(u => u == ' ') > 1)
{
result.Add(BuildLGDiagnostic(TemplateErrors.InvalidWhitespaceInCondition, context: conditionNode));
}
if (idx == 0 && !ifExpr)
{
result.Add(BuildLGDiagnostic(TemplateErrors.NotStartWithIfInCondition, DiagnosticSeverity.Warning, conditionNode));
}
if (idx > 0 && ifExpr)
{
result.Add(BuildLGDiagnostic(TemplateErrors.MultipleIfInCondition, context: conditionNode));
}
if (idx == ifRules.Length - 1 && !elseExpr)
{
result.Add(BuildLGDiagnostic(TemplateErrors.NotEndWithElseInCondition, DiagnosticSeverity.Warning, conditionNode));
}
if (idx > 0 && idx < ifRules.Length - 1 && !elseIfExpr)
{
result.Add(BuildLGDiagnostic(TemplateErrors.InvalidMiddleInCondition, context: conditionNode));
}
// check rule should should with one and only expression
if (!elseExpr)
{
if (ifRules[idx].ifCondition().expression().Length != 1)
{
result.Add(BuildLGDiagnostic(TemplateErrors.InvalidExpressionInCondition, context: conditionNode));
}
else
{
var errorPrefix = "Condition '" + conditionNode.expression(0).GetText() + "': ";
result.AddRange(CheckExpression(conditionNode.expression(0), errorPrefix));
}
}
else
{
if (ifRules[idx].ifCondition().expression().Length != 0)
{
result.Add(BuildLGDiagnostic(TemplateErrors.ExtraExpressionInCondition, context: conditionNode));
}
}
if (ifRules[idx].normalTemplateBody() != null)
{
result.AddRange(Visit(ifRules[idx].normalTemplateBody()));
}
else
{
result.Add(BuildLGDiagnostic(TemplateErrors.MissingTemplateBodyInCondition, context: conditionNode));
}
}
return(result);
}
/// <summary>
/// Exit a parse tree produced by the <c>ifElseBody</c>
/// labeled alternative in <see cref="LGTemplateParser.body"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>ifElseBody</c>
/// labeled alternative in <see cref="LGTemplateParser.body"/>.
/// <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 VisitIfElseBody([NotNull] LGTemplateParser.IfElseBodyContext context)
{
return(VisitChildren(context));
}