About M2SCI tools

Description

Scilab includes useful tools to convert Matlab M-files to Scilab.

Taking a Matlab M-file, mfile2sci modifies this files so that it can be compiled by Scilab. Then, this compiled code is converted to a "tree" of instructions by macr2tree. This "tree" is an imbrication of Scilab lists and tlists and is the basis for conversion. Each instruction of this "tree" is converted to Scilab and inference is done to known what are the variables. Once this "tree" is converted to Scilab, code is generated using tree2code.

All tlists used for coding this tree (and we call "MSCI tlists") are listed below:

• funcall

  tlist representing a function call created by Funcall

  operation

  tlist representing an operation created by Operation

  variable

  tlist representing a variable created by Variable

  cste

  tlist representing a constant created by Cste

  equal

  tlist representing an instruction created by Equal

  ifthenelse

  tlist representing an IF/THEN/ELSE control instruction created inside M2SCI kernel functions

  while

  tlist representing a WHILE control instruction created inside M2SCI kernel functions

  selectcase

  tlist representing a SELECT/CASE control instruction created inside M2SCI kernel functions

  for

  tlist representing a FOR control instruction created inside M2SCI kernel functions

The contents of these tlists is described in corresponding help pages.

Operations are converted using a function named %<opcode>2sci with opcode the Scilab code for this operator. See help page for overloading to have these codes. All these functions are already written and are in directory SCI/modules/m2sci/macros/percent/.

Function calls are converted using a function called sci_<Matlab_function_name>. Some of these functions have been written and are in directory SCI/modules/m2sci/macros/sci_files/. We are working on increasing the set of Matlab functions converted. However, everybody can write such functions using help page sci_files.

Inference is done using tlists of type "infer" containing fields:

dims

list of dimensions

type

"type" tlist

contents

"contents" tlist if a Cell or a Struct

Type is a tlist of type "type" containing fields:

vtype

data type

property

property

To have more details about inference see help page for m2scideclare.

See also

• mfile2sci — Matlab M-file to Scilab conversion function
• translatepaths — convert a set of Matlab M-files directories to Scilab
• overloading — display, functions and operators overloading capabilities
• sci_files — How to write conversion functions
• Funcall — Create the converted pseudo-code representing a function call
• Operation — Generates the Scilab pseudo-code representing an operation
• Variable — Generates the Scilab internal code representing a variable (without its content)
• Cste — Create a tree representing a constant
• Infer — Create a tree containing inference data
• Type — Create a tree containing type inference data
• Equal — Generates the Scilab internal code representing an instruction "LHS = RHS"
• m2scideclare — Giving tips to help M2SCI...