Enumeration ReferenceType

Each reference has exactly one reference type, stored as the respective number. However, when checking, we may want to allow for one of several types, allowing the combination of the respective bitmasks.

Having reference types is important as R separates a variable definition from a function when resolving an identifier. In c <- 3; print(c(1, 2)) the call to c works normally (as the vector constructor), while writing c <- function(...) ..1 overshadows the built-in and causes print to only output the first element.

See

isReferenceType - for checking if a (potentially joint) reference type contains a certain type
ReferenceTypeReverseMapping - for debugging

Index

Enumeration Members

Argument BuiltInConstant BuiltInFunction Constant Function Parameter Unknown Variable

Enumeration Members

Argument

Argument: 32

The identifier is defined by an argument (which we know nothing about at the moment)

BuiltInConstant

BuiltInConstant: 64

The identifier is defined by a built-in value/constant

BuiltInFunction

BuiltInFunction: 128

The identifier is defined by a built-in function

Constant

Constant: 8

The identifier is defined by a constant (includes built-in constant)

Function

Function: 2

The identifier is defined by a function (includes built-in function)

Parameter

Parameter: 16

The identifier is defined by a parameter (which we know nothing about at the moment)

Unknown

Unknown: 1

The identifier type is unknown

Variable

Variable: 4

The identifier is defined by a variable (includes parameter and argument)