Class ExpressionTupletizer

Provides a set of methods to pack and unpack expressions into/from tuples.

Inheritance

System.Object

ExpressionTupletizer

Namespace: System.Linq.CompilerServices

Assembly: Nuqleon.Linq.CompilerServices.dll

Syntax

public static class ExpressionTupletizer : Object

Methods

IsTuple(Type)

Checks whether the specified type is a packed tuple.

Declaration

public static bool IsTuple(Type type)

Parameters

Type	Name	Description
System.Type	type	Type to check.

Returns

Type	Description
System.Boolean	true if the specified type is a tuple; otherwise, false.

Pack(IEnumerable<Expression>)

Packs the specified expressions into an expression that creates a tuple of the expressions.

Declaration

public static Expression Pack(IEnumerable<Expression> expressions)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression>	expressions	Expressions to pack in a tuple.

Returns

Type	Description
System.Linq.Expressions.Expression	Expression representing the creation of a tuple of the given expressions.

Pack(Expression, IEnumerable<ParameterExpression>)

Creates a lambda expression whose parameters are packed in a tuple. If no parameters are specified, a lambda with no parameters is returned. If exactly one parameter is specified, the parameter will get packed in a 1-tuple.

Declaration

public static LambdaExpression Pack(Expression body, IEnumerable<ParameterExpression> parameters)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	body	Body of the lambda expression. Occurrences of the specified parameters will get packed in tuples.
System.Collections.Generic.IEnumerable<System.Linq.Expressions.ParameterExpression>	parameters	Parameters to be packed into a single lambda parameter.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters packed as a tuple.

Pack(Expression, IEnumerable<ParameterExpression>, Type)

Creates a lambda expression whose parameters are packed in a tuple. If no parameters are specified, a lambda with a dummy parameter of the specified 'void' type will be returned. If exactly one parameter is specified, the parameter will get packed in a 1-tuple.

Declaration

public static LambdaExpression Pack(Expression body, IEnumerable<ParameterExpression> parameters, Type voidType)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	body	Body of the lambda expression. Occurrences of the specified parameters will get packed in tuples.
System.Collections.Generic.IEnumerable<System.Linq.Expressions.ParameterExpression>	parameters	Parameters to be packed into a single lambda parameter.
System.Type	voidType	Type used to represent an empty parameter list as a single 'void' parameter.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters packed as a tuple.

Pack(LambdaExpression)

Packs the lambda expression parameters into a tuple. If the lambda expression has no parameters, this method is a no-op. If the lambda expression has exactly one parameter, the parameter will get packed in a 1-tuple.

Declaration

public static LambdaExpression Pack(LambdaExpression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to pack parameters for.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters packed as a tuple.

Pack(LambdaExpression, Type)

Packs the lambda expression parameters into a tuple. If the lambda expression has no parameters, a dummy parameter of the specified 'void' type will be inserted. If the lambda expression has exactly one parameter, the parameter will get packed in a 1-tuple.

Declaration

public static LambdaExpression Pack(LambdaExpression expression, Type voidType)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to pack parameters for.
System.Type	voidType	Type used to represent an empty parameter list as a single 'void' parameter.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters packed as a tuple.

Unpack(Expression)

Unpacks the specified expression representing a tuple into the expressions of its components.

Declaration

public static IEnumerable<Expression> Unpack(Expression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	expression	Expression to unpack into its component expressions.

Returns

Type	Description
System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression>	Expressions representing the components of the tuple represented by the given expression.

Unpack(LambdaExpression)

Unpacks the lambda expression with a tuple-based parameter into a lambda expression with parameters for the tuple components. If the lambda expression has no parameters, this method is a no-op.

Declaration

public static LambdaExpression Unpack(LambdaExpression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to unpack the tuple-based parameter into parameters for its components.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters unpacked from the tuple-based parameter.

Unpack(LambdaExpression, out Expression, out IEnumerable<ParameterExpression>)

Unpacks the lambda expression with a tuple-based parameter into a lambda body and its set of parameters.

Declaration

public static void Unpack(LambdaExpression expression, out Expression body, out IEnumerable<ParameterExpression> parameters)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to unpack the tuple-based parameter into parameters for its components.
System.Linq.Expressions.Expression	body	Lambda body with parameters unpacked from the tuple-based parameter.
System.Collections.Generic.IEnumerable<System.Linq.Expressions.ParameterExpression>	parameters	The set of parameters that occur in the lambda body.

Unpack(LambdaExpression, Type)

Unpacks the lambda expression with a tuple-based parameter into a lambda expression with parameters for the tuple components. If the lambda expression has no parameters, this method is a no-op. If the lambda expression has one parameter of the specified 'void' type, it will get unpacked into a lambda expression with no parameters.

Declaration

public static LambdaExpression Unpack(LambdaExpression expression, Type voidType)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to unpack the tuple-based parameter into parameters for its components.
System.Type	voidType	Type used to represent an empty parameter list as a single 'void' parameter.

Returns

Type	Description
System.Linq.Expressions.LambdaExpression	Lambda expression with parameters unpacked from the tuple-based parameter.

Unpack(LambdaExpression, Type, out Expression, out IEnumerable<ParameterExpression>)

Unpacks the lambda expression with a tuple-based parameter into a lambda body and its set of parameters.

Declaration

public static void Unpack(LambdaExpression expression, Type voidType, out Expression body, out IEnumerable<ParameterExpression> parameters)

Parameters

Type	Name	Description
System.Linq.Expressions.LambdaExpression	expression	Expression to unpack the tuple-based parameter into parameters for its components.
System.Type	voidType	Type used to represent an empty parameter list as a single 'void' parameter.
System.Linq.Expressions.Expression	body	Lambda body with parameters unpacked from the tuple-based parameter.
System.Collections.Generic.IEnumerable<System.Linq.Expressions.ParameterExpression>	parameters	The set of parameters that occur in the lambda body.