ValueAssignExpression

Full name SMRUCC.Rsharp.Interpreter.ExecuteEngine.ExpressionSymbols.Operators.ValueAssignExpression Assembly REnv Members 13

Set variable or tuple

00 Remarks

supports tuple disconstruct syntax for assign value to multiuple symbols.

01 Syntax

SMRUCC.Rsharp.Interpreter.ExecuteEngine.ExpressionSymbols.Operators.ValueAssignExpression

02 Methods

Name	Overloads	Summary
EvaluateValue	1	evaluate the ValueAssignExpression.value expression as the clr runtime value.
DoValueAssign	1	set the given value to ValueAssignExpression.targetSymbols.
setFromObjectList	1	使用左边的变量符号的名称从右边的列表之中按名称取出值，不存在的名字则赋值为空值
GetSymbol	1	handling get symbol from the given expression types: 1.
Evaluate	1
ToString	1
setFromDataFrame	1

03 Properties

Name	Overloads	Summary
targetSymbols	1	可能是对tuple做赋值所以应该是多个变量名称
value	1	the value data expression for assigned to the ValueAssignExpression.targetSymbols
type	1
expressionName	1
isByRef	1
symbolSize	1

04 Members

method EvaluateValue #

EvaluateValue(Environment)

evaluate the ValueAssignExpression.value expression as the clr runtime value.

Parameters

Name	Type	Description
`env`	Environment	-

method DoValueAssign #

DoValueAssign(Environment, Object)

set the given value to ValueAssignExpression.targetSymbols.

Parameters

Name	Type	Description
`envir`	Environment	-
`value`	`Object`	-

method setFromObjectList #

setFromObjectList(Environment, Expression(), Boolean, Object)

使用左边的变量符号的名称从右边的列表之中按名称取出值，不存在的名字则赋值为空值

Parameters

Name	Type	Description
`envir`	Environment	-
`targetSymbols`	Expression()	-
`isByRef`	`Boolean`	-
`value`	`Object`	-

method GetSymbol #

GetSymbol(Expression)

handling get symbol from the given expression types:

Literal: get string literal value as symbol text
SymbolReference: get symbol name as the symbol text

Parameters

Name	Type	Description
`symbolName`	Expression	-

Returns

this function returns nothing if the given expression type is not implements for get symbol text

property targetSymbols #

targetSymbols

可能是对tuple做赋值所以应该是多个变量名称

property value #

value

the value data expression for assigned to the ValueAssignExpression.targetSymbols

property type #

type

property expressionName #

expressionName

property isByRef #

isByRef

property symbolSize #

symbolSize

method Evaluate #

Evaluate(Environment)

method ToString #

ToString()

method setFromDataFrame #

setFromDataFrame(Environment, Expression(), Boolean, Object)