static FluentParser()
{
/*
* Grammar:
* expression => factor ( ( "-" | "+" ) factor )* ;
* factor => unary ( ( "/" | "*" ) unary )* ;
* unary => ( "-" ) unary
* | primary ;
* primary => NUMBER
* | "(" expression ")" ;
*/
// The Deferred helper creates a parser that can be referenced by others before it is defined
var expression = Deferred <Expression>();
var number = Terms.Decimal()
.Then <Expression>(static d => new Number(d))
public IEnumerable <Parser <IAssetParserFragment> > GetParsers()
{
var propType = Between(Terms.Char('<'),
Terms.Identifier().Then <IAssetParserFragment>(id => new PropertyValueFragment
{
PropertyType = id.ToString()
}),
Terms.Char('>'));
var propValue = Between(Terms.Char('<'), Terms.Identifier().AndSkip(Terms.Char('=')).And(TemplateParser.ValueInputParser.Or(Terms.Char('*').Then(c => c.ToString())))
.Then <IAssetParserFragment>(x =>
new PropertyValueFragment
{
PropertyType = x.Item1.ToString(), PropertyValue = x.Item2.ToString()
}), Terms.Char('>'));
var numberPropValue = Between(Terms.Char('<'),
Terms.Identifier().AndSkip(Terms.Char('=')).And(
Separated(Terms.Char('|'), Terms.Integer().Then(Convert.ToDouble).Or(Terms.Decimal().Then(Convert.ToDouble)))), Terms.Char('>'))
.Then <IAssetParserFragment>(result => new NumberCollectionValueFragment(result.Item1.ToString())
{
AllowedValues = result.Item2
});
return(new List <Parser <IAssetParserFragment> > {
propType, propValue, numberPropValue
});
}