rm-hull / byok Goto Github PK

Currently gets parsed as 2/4/6/8 (when shift pressed or CAPSLock on) for Down/Left/Right/Up

Should use new getchar_ext(input_t *) function and act on cursor key scancodes.

To improve debug logging (to channel to 2nd virtual console)

At the prompt, enter a few spaces, then press TAB, results in:

Assertion failed: 'end >= index' in function rl_token_end(), at src/kernel/readline.c (line 124)

notes

• how will recursion work?
• instruction pointer / rstack
• vocab integration

In stack_abort() something a bit more fancy than:

    printf("RS: ");
    dlist_elem_t *element = dlist_tail(ctx->rs);
    while (element != NULL)
    {
        int *num = dlist_data(element);

        printnum(*num, ctx->base);
        element = dlist_prev(element);
    }
    printf("\n");

LITERAL is defined (as a primitive), along the lines:

: LITERAL ( n -- ) compile (lit) , ; immediate

When used to implement [CHAR]:

: [CHAR]  ( <char> -- char , for compile mode )
    char [compile] literal 
; immediate

Which we can then test with a trivial definition:

: f [char] F ;

yields the following disassembly:

00004828:  58 71 11 00  |Xq..|  NEST
0000482c:  70 ff 00 00  |p...|  (LIT)
00004830:  46 00 00 00  |F...|
00004834:  90 71 11 00  |.q..|  ,
00004838:  74 71 11 00  |tq..|  UNNEST

Using LITERAL for this seems incorrect, or at least should be used with a different compiler-controlling word

( a-addr n -- ) Dump memory at a-addr for n bytes

extern void rpad(char *text, int width, char padc);
extern void safeputch(int i);
extern void dump(int addr, int len);

With the following simple words:

: HELLO  ." hello " ;
: GOODBYE  ." goodbye " ;

It should be possible to chain them as follows:

' goodbye >body >r  hello

i.e. pushing the address of GOODBYE onto the return stack, to fool the execution loop to think it's a return address.

Currently __EXEC exits as soon as it encounters an unnest. It should probably carry on until the stack is exhausted.

Enter D<tab> and cycle round all the words beginning with D.
Clear the line, enter S<tab> and cycle round all the words beginning with S, eventually it will revert to words beginning with D.

Not sure if the error is with readline or the completer function

• Implement BASE in terms of a vocab item rather than https://github.com/rm-hull/byok/blob/master/forth/src/words/io.c#L113
• vocab_t union structure ( .const / .var / etc)

Dictionary entry appears to be corrupted:

Notice the name and docstrings are not properly formed

http://www.bigsmoke.us/readline/shortcuts

SHIFT-LEFT should also map as Alt-b
SHIFT-RIGHT as Alt-f

http://www.bigsmoke.us/readline/shortcuts