public override FieldDefinition VisitField_decl([NotNull] FlatBuffersParser.Field_declContext context)
{
this.definition.Name = context.IDENT().GetText();
ErrorContext.Current.WithScope(this.definition.Name, () =>
{
Dictionary <string, string> metadata = new MetadataVisitor().VisitMetadata(context.metadata());
string fbsFieldType = context.type().GetText();
this.definition.VectorType = VectorType.None;
if (fbsFieldType.StartsWith("["))
{
this.definition.VectorType = VectorType.IList;
// Trim the starting and ending square brackets.
fbsFieldType = fbsFieldType.Substring(1, fbsFieldType.Length - 2);
this.definition.VectorType = VectorType.IList;
if (metadata.TryGetValue("vectortype", out string vectorTypeString))
{
if (!Enum.TryParse <VectorType>(vectorTypeString, true, out var vectorType))
{
ErrorContext.Current?.RegisterError($"Unable to parse '{vectorTypeString}' as a vector type. Valid choices are: {string.Join(", ", Enum.GetNames(typeof(VectorType)))}.");
}
this.definition.VectorType = vectorType;
}
}
else if (metadata.ContainsKey("vectortype"))
{
ErrorContext.Current?.RegisterError($"Non-vectors may not have the 'vectortype' attribute. Field = '{this.definition.Name}'");
}
this.definition.FbsFieldType = fbsFieldType;
string defaultValue = context.scalar()?.GetText();
if (!string.IsNullOrEmpty(defaultValue))
{
this.definition.DefaultValue = defaultValue;
}
if (metadata.ContainsKey("deprecated"))
{
this.definition.Deprecated = true;
}
if (metadata.ContainsKey("key"))
{
this.definition.IsKey = true;
}
if (metadata.ContainsKey("sortedvector"))
{
this.definition.SortedVector = true;
}
// Attributes from FlatBuffers that we don't support.
string[] unsupportedAttributes =
{
"id", "required", "force_align", "bit_flags", "flexbuffer", "hash", "original_order"
};
foreach (var unsupportedAttribute in unsupportedAttributes)
{
if (metadata.ContainsKey(unsupportedAttribute))
{
ErrorContext.Current?.RegisterError($"FlatSharpCompiler does not support the '{unsupportedAttribute}' attribute in FBS files.");
}
}
});
return(this.definition);
}
