UiPath.Studio.Activities.Api.Expressions

In this section you can find more information on how to build activities using UiPath.Studio.Activities.Api.Expressions.

IDesignTimeExpressionExpanderService

Note: This feature was introduced in UiPath.Studio.Activities.Api v21.10.

Service used to expand/unwrap dynamic expressions at design time, e,g, dynamic file paths.

Properties

Type	Name	Description
string	ExpandString	Expands the given string expression.
string	GenerateDynamicString	Generates a dynamic expression string based on the specified value. For example, if the given string is a file path that is user-specific (e.g. a file path that points to something in My Documents), this will turn that static string into a dynamic, user-agnostic expression that can be "expanded" by ExpandString(string) at design time and evaluated by WWF at runtime. It turns C:UsersUserSomeFolder to something like string.Format("{}\SomeFolder", Environment.UserFolder).

IExpressionService

Note: This feature was introduced in UiPath.Studio.Activities.Api v21.4.

Interface for returning tokens from an expression.

Methods

IEnumerable<Token> GetIdentifierAndLiteralList(string expression, string expressionLanguage)

Returns a flat list of all identifiers and literals encountered in the given expression, in the order in which they were encountered.

Parameter Type	Parameter Name	Remarks
string	expression	The expression to tokenize.
string	expressionLanguage	The dark theme.

Token

Note: This feature was introduced in UiPath.Studio.Activities.Api v21.4.

The smallest element of an expression, for example an identifier or a literal value.

Properties

Type	Name	Description
string	StringRepresentation	The name of the token.
string	TokenType	The token type.
Type	ExpressionType	The type of expression.

TokenType

Note: This feature was introduced in UiPath.Studio.Activities.Api v21.4.

The type of token.

Constants

Type	Name	Description
string	ObjectCreation	The token represents the creation of an object.
string	IdentifierReference	The token represents the referencing of an object or method by name.
string	LiteralUsage	The token represents the usage of a literal value.