Classes | Core > Kernel

FunctionDef : Object

FunctionDefs contain code which can be executed from a Function.
Subclasses: Method


Related Keywords


The global pseudo-variable thisFunctionDef always evaluates to the current enclosing FunctionDef.

See also: thisFunction

Class Methods

Inherited class methods

Instance Methods


Even though it is possible to change the values in the various arrays that define the FunctionDef, you should not do it, unless you like to crash.


Get the byte code array.


Get the source code string.


Get the enclosing FunctionDef or Method.

.findReferences(aSymbol, references)

return a list of all references to a given symbol.


Get the Array of Symbols of the argument names.


Get the array of default values for argument and temporary variables.


Get the Array of Symbols of the local variable names.

.argumentString(withDefaultValues: true, withEllipsis: false, asArray: false)

Return a string that contains all argument names and their default values for embedding in a string. If there are no arguments, it returns nil.



If set to false, no default values are appended


If set to true, ellipsis characters (" ... ") are appended


If set to true, return the string for an array that represents all arguments. The other arguments are set to false.


Get the Array of Symbols of the local variable names.

Generating Strings

.makeFuncArgModifierString: METHOD NOT FOUND!

Return a string that can be interpreted as code for a new function which extracts the arguments from the receiver. This can be used to build a hygienic macro which returns a function with valid keyword arguments, instead of just anonymously forwarding the arguments, like in { |...args| func.valueArray(args) }.

For an implementation example Function: flop (as below).



A function to which a string is passed that represents the array of all arguments. It should return a string that can be interpreted.



"Disassemble" and post the FunctionDef's byte code instructions to the text window.

Inherited instance methods

Undocumented instance methods