TemplatedExpressionParser Class

Represents a template based token substitution parser that supports binary and advanced expressions.

Definition

Namespace: Gemstone.Expressions
Assembly: Gemstone.Expressions (in Gemstone.Expressions.dll) Version: 1.0.128 -- Release Build+cfed08c7efcabf54b006110ecd862a6bfcb7b819

C#View Source Request Example

public class TemplatedExpressionParser

VBView Source Request Example

Public Class TemplatedExpressionParser

C++View Source Request Example

public ref class TemplatedExpressionParser

JavaScriptView Source Request Example

Gemstone.Expressions.TemplatedExpressionParser = function();

Type.createClass(
	'Gemstone.Expressions.TemplatedExpressionParser');

Inheritance: Object TemplatedExpressionParser

Remarks

As an example, this parser can use a templated expression of the form:

C#

{CompanyAcronym}_{DeviceAcronym}[?{SignalType.Source}=Phasor[-{SignalType.Suffix}{SignalIndex}]]:{Signal.Acronym}

then replace the tokens with actual values and properly evaluate the expressions. Example results could look like: GPA_SHELBY-PA1:IPHA and GPA_SHELBY:FREQ

Parser also supports more complex C# style expressions using the "eval{}" function, e.g.:

C#

eval{'{CompanyAcronym}'.Substring(0,3)}_{DeviceAcronym}eval{'[?{SignalType.Source}=Phasor[-{SignalType.Suffix}]]'.Length}

Constructors

TemplatedExpressionParser	Creates a new TemplatedExpressionParser.
TemplatedExpressionParser(Char, Char, Char, Char)	Creates a new TemplatedExpressionParser with desired delimiters.

Properties

EndExpressionDelimiter	Gets the character that identifies the end of an expression.
EndTokenDelimiter	Gets the character that identifies the end of a token.
ReservedSymbols	Gets the reserved symbols - this includes all delimiters and expression operators.
StartExpressionDelimiter	Gets the character that identifies the start of an expression.
StartTokenDelimiter	Gets the character that identifies the beginning of a token.
TemplatedExpression	Gets or sets the templated expression to use.

Methods

Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
Execute	Executes replacements using provided substitutions dictionary on the currently defined TemplatedExpression value and optionally evaluates any expressions.
Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object)
GetHashCode	Serves as the default hash function. (Inherited from Object)
GetType	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
ToString	Returns a string that represents the current object. (Inherited from Object)