public static EntityTemplate Parse(string templateJson, IAntlrErrorStrategy errorStrategy = null)
{
var lexer = new EntityTemplateLexer(new AntlrInputStream(templateJson));
var parser = new EntityTemplateParser(new CommonTokenStream(lexer))
{
ErrorHandler = errorStrategy ?? new BailErrorStrategy()
};
var ast = parser.template();
ValidatorVisitor.Reset();
ValidatorVisitor.Visit(ast);
try
{
ValidatorVisitor.ThrowExceptionIfErrors();
}
catch (Exception e)
{
throw new InvalidDataException($"Tried to parse template from json: '{templateJson}' but failed. See inner exception for details", e);
}
var parserVisitor = new EntityTemplateParserVisitor();
return(parserVisitor.Visit(ast));
}
public override EntityTemplate VisitRegularField(EntityTemplateParser.RegularFieldContext context)
{
//we only care about entity template child objects, since they define entity hierarchy.
if (context.value().@object() == null)
{
throw new InvalidDataException(
$"Expected from the field '{context.key.Text.Trim(1,1)}' to be an object but it wasn't");
}
var childParserVisitor = new EntityTemplateParserVisitor();
var childEntityTemplate = childParserVisitor.Visit(context.value().@object());
var childParserValidator = new EntityTemplateValidatorVisitor();
childParserValidator.Visit(context.value().@object());
if (!childParserValidator.HasIdentifierField)
{
childEntityTemplate.Id = context.key.Text.Trim(1, 1);
}
try
{
DefaultResult.Children.Add(context.key.Text.Trim(1, 1), childEntityTemplate);
}
catch (ArgumentException e)
{
throw new InvalidDataException(
$"Found duplicate child entity template field. ('{context.key.Text.Trim(1, 1)}'). Did you execute template validation visitor?", e);
}
return(DefaultResult);
}