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51 lines
1.1 KiB
51 lines
1.1 KiB
#include "forth.h"
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#include "fh_error.h"
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#include "fh_runtime.h"
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#include "fh_mem.h"
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#include "fh_stack.h"
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#include "fh_print.h"
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#include "fh_builtins.h"
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static enum fh_error w_depth(struct fh_thread_s *fh, const struct fh_word_s *w)
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{
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(void) w;
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enum fh_error rv;
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TRY(ds_push(fh, fh->data_stack_top));
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return FH_OK;
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}
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static enum fh_error w_unused(struct fh_thread_s *fh, const struct fh_word_s *w)
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{
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(void) w;
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enum fh_error rv;
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TRY(ds_push(fh, HEAP_SIZE - fh->here));
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return FH_OK;
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}
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// extension
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static enum fh_error w_reset(struct fh_thread_s *fh, const struct fh_word_s *w)
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{
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(void) w;
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enum fh_error rv;
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ENSURE_STATE(FH_STATE_INTERPRET);
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fh_init(fh);
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return FH_OK;
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}
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static enum fh_error w_bye(struct fh_thread_s *fh, const struct fh_word_s *w)
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{
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(void) w;
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fh_setstate(fh, FH_STATE_SHUTDOWN, 0);
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return FH_OK;
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}
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const struct name_and_handler fh_builtins_system[] = {
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{"depth", w_depth, 0, 0},
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{"unused", w_unused, 0, 0},
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{"reset", w_reset, 1, 0},
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{"bye", w_bye, 0, 0},
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{ /* end marker */ }
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};
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