public EnumReference(Token token, EnumDefinition enumDefinition, TopLevelConstruct owner)
: base(token, owner)
{
this.EnumDefinition = enumDefinition;
}
internal override Expression Resolve(ParserContext parser)
{
this.Root = this.Root.Resolve(parser);
string step = this.StepToken.Value;
if (this.Root is EnumReference)
{
EnumDefinition enumDef = ((EnumReference)this.Root).EnumDefinition;
ConstantResolutionState resolutionState = parser.ConstantAndEnumResolutionState[enumDef];
if (resolutionState != ConstantResolutionState.RESOLVED)
{
enumDef.Resolve(parser);
}
if (step == parser.Keywords.FIELD_ENUM_LENGTH)
{
return(new IntegerConstant(this.FirstToken, enumDef.IntValue.Count, this.Owner));
}
if (step == parser.Keywords.FIELD_ENUM_MAX)
{
return(new SpecialEntity.EnumMaxFunction(this.FirstToken, enumDef, this.Owner));
}
if (step == parser.Keywords.FIELD_ENUM_VALUES)
{
return(new SpecialEntity.EnumValuesFunction(this.FirstToken, enumDef, this.Owner));
}
if (enumDef.IntValue.ContainsKey(step))
{
return(new IntegerConstant(this.FirstToken, enumDef.IntValue[step], this.Owner));
}
else
{
throw new ParserException(this.StepToken, "The enum '" + enumDef.Name + "' does not contain a definition for '" + step + "'");
}
}
if (this.Root is BaseKeyword)
{
return(new BaseMethodReference(this.Root.FirstToken, this.DotToken, this.StepToken, this.Owner).Resolve(parser));
}
if (this.Root is StringConstant)
{
if (step == "join")
{
throw new ParserException(this.StepToken,
"There is no join method on strings. Did you mean to do list.join(string) instead?");
}
else if (step == "size")
{
throw new ParserException(this.StepToken, "String size is indicated by string.length.");
}
else if (step == "length")
{
int length = ((StringConstant)this.Root).Value.Length;
return(new IntegerConstant(this.FirstToken, length, this.Owner));
}
}
return(this);
}
