public static bool HasAny(this SearchExpressionType type, SearchExpressionType flags)
{
if (type == SearchExpressionType.Nil && flags == SearchExpressionType.Nil)
{
return(true);
}
return((type & flags) != 0);
}
internal SearchExpression(SearchExpressionType types,
StringView outerText, StringView innerText, StringView alias,
SearchExpressionEvaluator evaluator, SearchExpression[] parameters)
{
this.types = types;
this.outerText = outerText;
this.innerText = innerText.valid ? innerText : outerText;
this.alias = alias;
this.parameters = parameters ?? new SearchExpression[0];
this.evaluator = evaluator;
}
internal static SearchExpression NumberParser(StringView outerText)
{
var trimmedText = ParserUtils.SimplifyExpression(outerText);
if (!Utils.TryParse(trimmedText.ToString(), out double _))
{
return(null);
}
SearchExpressionType types = SearchExpressionType.Number;
if (trimmedText == "0" || trimmedText == "1")
{
types |= SearchExpressionType.Boolean;
}
return(new SearchExpression(types, outerText, trimmedText, ConstantEvaluator));
}
public static bool IsText(this SearchExpressionType type)
{
return(type.HasAny(SearchExpressionType.Literal | SearchExpressionType.Selector));
}
public static bool IsLiteral(this SearchExpressionType type)
{
return(type.HasAny(SearchExpressionType.Literal));
}
public static bool IsIterable(this SearchExpressionType type)
{
return(type.HasAny(SearchExpressionType.Iterable));
}
public SearchExpression(SearchExpressionType types, StringView outerText, StringView innerText, SearchExpressionEvaluator evaluator, SearchExpression[] parameters)
: this(types, outerText, innerText, StringView.Null, evaluator, parameters)
{
}
public Signature AddArgument(SearchExpressionType types, bool variadic, bool optional)
{
return(AddArgument(new Argument(types, variadic, optional)));
}
internal SearchExpression(SearchExpressionType types, StringView text, SearchExpressionEvaluator evaluator)
: this(types, text, text, StringView.nil, evaluator, null)
{
}
internal SearchExpression(SearchExpressionType types, StringView outerText, StringView innerText, StringView alias, SearchExpressionEvaluator evaluator)
: this(types, outerText, innerText, alias, evaluator, null)
{
}
internal SearchExpression(SearchExpressionType types, StringView outerText, StringView innerText)
: this(types, outerText, innerText, StringView.nil, default, null)
{
}
internal SearchExpression(SearchExpressionType types, StringView text)
: this(types, text, StringView.nil, StringView.nil, default, null)
{
}
public SearchExpression(SearchExpressionType types, StringView outerText, StringView innerText)
: this(types, outerText, innerText, StringView.Null, default, null)
{
}
public SearchExpression(SearchExpressionType types, StringView text)
: this(types, text, StringView.Null, StringView.Null, default, null)
{
}
public SearchExpression(SearchExpressionType types, StringView text, SearchExpressionEvaluator evaluator)
: this(types, text, text, StringView.Null, evaluator, null)
{
}
internal SearchExpression(SearchExpressionType types, StringView text, SearchExpressionEvaluator evaluator, SearchExpression[] parameters)
: this(types, text, text, StringView.nil, evaluator, parameters)
{
}
public Argument(SearchExpressionType types, bool variadic = false, bool optional = false)
{
this.types = types;
this.variadic = variadic;
this.optional = optional || types.HasFlag(SearchExpressionType.Optional);
}
internal SearchExpression(SearchExpression ex, SearchExpressionType types, StringView outerText, StringView innerText)
: this(types, outerText, innerText, ex.alias, ex.evaluator, ex.parameters)
{
}
public Signature AddArgument(SearchExpressionType types)
{
return(AddArgument(types, types.HasFlag(SearchExpressionType.Variadic), types.HasFlag(SearchExpressionType.Optional)));
}
public SearchExpression(SearchExpressionType types, StringView outerText, StringView innerText, SearchExpressionEvaluator evaluator)
: this(types, outerText, innerText, StringView.Null, evaluator, null)
{
}