Unable to load my code -- what am I doing wrong?

[bobgillies]

I've typed my code in Windows Notepad and tried to load it into oforth,
using the RUN command in the Search Programs and files search box in the Start Menu:
C:\oforth\oforth.exe --i --P"c:\oforth\matrix.of load"

But kept getting this message at the oforth command line:
[stdin:1:40] ExRuntime : Can't evaluate <C:\oforth\matrix.of>

So I copied the "helloworld.of" script to the same subdirectory that oforth.exe is in, and tried to RUN with this:
C:\oforth\oforth.exe --i --P"c:\oforth\helloworld.of load"

And I still get this error:
[stdin:1:40] ExRuntime : Can't evaluate <c:\oforth\helloworld.of>

What am I doing wrong?

[Franck]

#load takes a string and loads the file which name is this string.
But your c:\oforth\matrix.of is not between "", so it is not a string and oforth tries to interpret it.

Code: Select all

oforth matrix.of


will load matrix.of and returns. I don't think that is what you want.

Code: Select all

oforth --P"5 Matrix id .s" matrix.of


will load matrix.of, then runs the command and returns.

If you just want to load matrix.of and go into the interpreter, you can try :

Code: Select all

oforth --i --P"\"matrix.of\" load"


But the best way is to create a package and load it an startup using :

Code: Select all

oforth --i --P"import: matrix"


You can find how to create a package "matrix" into the documentation.
Or you can see an example into the packs directory.

Franck

[bobgillies]

I'll try that but here's what I noticed in my findings:
Part of problems while in oforth's Read Eval Print Loop was in the string I passed to load an .OF file:
This worked: "\matrix.of\ " load
This did not: "\matrix.of\" load

So, I caught my mistake. That's the good news.

The not so good news is probably my choice of editor (Windows NotePad, for now).

I think my editor is leaving some hidden control codes in the text file. I'll follow up with what I find out.

In the mean time, what text editor or IDE would you suggest or what text encoding (ANSI, UTF-8, Unicode, etc).

Bob

[bobgillies]

Some further digging in the interwebs came up with this:

"Windows uses CRLF (\r\n, 0D 0A) line endings while Unix just uses LF (\n, 0A)".

So I went and copied the helloworld.of file in the \oforth\examples\ folder and pasted it's duplicate in the \oforth\ folder. Then I opened the duplicate and replaced the helloworld definitions with the matrix definitions and saved it. Renamed the duplicate's filename to testmatrix.

It does load properly.

When I did a cut and past of the code into a Windows NotePad .txt document also name textmatrix, it would not load and I get this error:

[stdin:1:23] ExRuntime : Can't open source file < estmatrix.of >

The filename is missing the "t" caracter and replaced with a bunch of leading blanks. That's odd, don't you think? Now what would oforth's REPL expect for an End Of Line character or even End Of File character?


bob

[Franck]

Using \" should be only used when you pass the file on the command line, because the --P option already uses " and " to define the string to execute.

So you have to write :
oforth --P" \"matrix.of\" load" --i

If you don't use \ the command line will consider that this is the end of the command you want to execute.

But, if you are already into the REPL loop, you can just type :
"matrix.of" load.

If you write :
"\matrix.of\" load
you are creating an unterminated string with a " after the f.

If you write :
"\matrix.of\ " load
\m is m and \ is a space, so it is as if you have typed
"matrix.of " load
so it works.

Currently, I use vim, but I'am trying also HolonS. If you have already used Smalltalk, you will like HolonS

But I don't think that notepad will add control codes. If you have an example of what is wrong with notepad, I'am interested.

Franck

[Franck]

That is because \t is not t but is a TAB, I think.

Don't use \ when into the REPL, use it just when you need a " into the --P string.

Unless you want to have special characters into a string, of course. For instance :
"abcd\tef\"gh" .s

Franck

[bobgillies]

It does indeed loads properly as you stated. I got it now. Thank you again, sir.

Bob