[Pharo-project] mapping primitive numbers to meaningful selectors

March 29, 2012

      Hi - in porting the Type Inference Engine to Pharo, I came across this
problem.

I was using the Interpreter class to help translate from the number of a
primitive into a meaningful selector (eg from 1 to primitiveAdd).

Any ideas how to achieve something similar in Pharo?

Assuming primitive numbers haven't changed, I could just copy that
method...

- Francisco

In Squeak 2.8:

Interpreter class >> initializePrimitiveTable****

                "This table generates a C switch statement for primitive
dispatching."****

** **

                "NOTE: The real limit here is 2047, but our C compiler
currently barfs over 700"****

                MaxPrimitiveIndex _ 700.****

                PrimitiveTable _ Array new: MaxPrimitiveIndex + 1.****

                self table: PrimitiveTable from:****

                #(            "Integer Primitives (0-19)"****

                                (0 primitiveFail)****

                                (1 primitiveAdd)****

                                (2 primitiveSubtract)****

                                (3 primitiveLessThan)****

                                (4 primitiveGreaterThan)****

                                (5 primitiveLessOrEqual)****

                                (6 primitiveGreaterOrEqual)****

                                (7 primitiveEqual)****

                                (8 primitiveNotEqual)****

                                (9 primitiveMultiply)****

                                (10 primitiveDivide)****

                                (11 primitiveMod)

:

<and so on>

[Pharo-project] mapping primitive numbers to meaningful selectors

Francisco Garau