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lib/Language/Eforth.pm  view on Meta::CPAN

This module embeds a tiny embeddable Forth interpreter.

L<https://github.com/howerj/embed>

The interpreter has a 16-bit cell size, does not support floating point
values, AND CONTRARY TO THE ans fORTH SPECIFICATION REQUIRES LOWER-CASE
WORDS. Consult C<embed.fth> for details on various "Error Codes" and
other documentation.

Memory usage while not zero should not be very significant; it mostly
depends on the C<EMBED_CORE_SIZE> count of 16-bit cells allocated. And
whatever Perl needs. Assertion failures are also possible, unless the
compile was somehow done with C<-DNDEBUG>.

=head1 METHODS

These may C<croak> should something be awry with the input, or if memory
allocation fails in the constructor.

=over 4

lib/Language/Eforth.xs  view on Meta::CPAN

        embed_eval(self, (char *)SvPV_nolen(expr));

Language::Eforth
new( const char *class )
    PREINIT:
        embed_t *self;
        embed_opt_t opts;
    CODE:
        Newxz(self, 1, embed_t);
        if (!self) croak("could not allocate forth");
        self->m = calloc(EMBED_CORE_SIZE * sizeof(cell_t), 1);
        if (!(self->m)) croak("could not allocate memory");
        embed_default(self);
        opts         = embed_opt_default();
        opts.out     = stdout;
        opts.put     = put_char;
        opts.options = 0;
        self->o      = opts;
        /* KLUGE prime the engine so push works from the get-go */
        embed_eval(self, "\n");
        RETVAL = self;

ppport.h  view on Meta::CPAN

dXSBOOTARGSAPIVERCHK|5.021006||Viu
dXSBOOTARGSNOVERCHK|5.021006||Viu
dXSBOOTARGSXSAPIVERCHK|5.021006||Viu
dXSFUNCTION|5.005000||Viu
dXSI32|5.003007|5.003007|V
dXSTARG|5.006000|5.003007|poVnu
dXSUB_SYS|5.003007||Viu
edit_distance|5.023008||Vniu
EIGHT_BIT_UTF8_TO_NATIVE|5.023003||Viu
ELEMENT_RANGE_MATCHES_INVLIST|5.023002||Viu
EMBEDMYMALLOC|5.006000||Viu
emulate_cop_io|||xciu
emulate_setlocale|5.027009||Vniu
END|5.003007||Viu
END_EXTERN_C|5.005000|5.003007|pV
endgrent|5.009000||Viu
ENDGRENT_R_HAS_FPTR|5.008000||Viu
ENDGRENT_R_PROTO|5.008000|5.008000|Vn
endhostent|5.005000||Viu
ENDHOSTENT_R_PROTO|5.008000|5.008000|Vn
ENDLIKE|5.009005||Viu