core: Add function indirection.
* mes.c (functions): New array. (scm_t): Change function pointer to index. (make_cell): Handle function. (call): Update for function change. (display_): Likewise. (make_function): New function. * build-aux/mes-snarf.scm (function->source): Update declarations. (function->environment): New function.
This commit is contained in:
Jan Nieuwenhuizen
parent
61e42e8527
commit
d50b0fe24a
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@ -70,15 +70,6 @@ exec ${GUILE-guile} --no-auto-compile -L $HOME/src/mes/build-aux -L build-aux -e
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(define (function-cell-name f)
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(string-append %cell-prefix% (.name f)))
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(define (function->source f i)
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(string-append
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(format #f "cell_~a = g_free.value++;\n" (.name f))
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(format #f "g_cells[cell_~a] = ~a;\n" (.name f) (function-builtin-name f))))
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(define (function->environment f i)
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(string-append
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(format #f "a = add_environment (a, ~S, ~a);\n" (function-scm-name f) (function-cell-name f))))
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(define %start 1)
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(define (symbol->header s i)
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(format #f "SCM cell_~a;\n" s))
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@ -86,17 +77,29 @@ exec ${GUILE-guile} --no-auto-compile -L $HOME/src/mes/build-aux -L build-aux -e
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(define (symbol->source s i)
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(string-append
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(format #f "cell_~a = g_free.value++;\n" s)
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(format #f "g_cells[cell_~a] = scm_~a;\n" s s)))
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(format #f "g_cells[cell_~a] = scm_~a;\n\n" s s)))
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(define (function->header f i)
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(let* ((arity (or (assoc-ref (.annotation f) 'arity)
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(if (string-null? (.formals f)) 0
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(length (string-split (.formals f) #\,)))))
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(n (if (eq? arity 'n) -1 arity)))
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(string-append (format #f "SCM ~a (~a);\n" (.name f) (.formals f))
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(format #f "function fun_~a = {.function~a=&~a, .arity=~a};\n" (.name f) arity (.name f) n)
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(format #f "scm ~a = {FUNCTION, .name=~S, .function=&fun_~a};\n" (function-builtin-name f) (function-scm-name f) (.name f))
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(format #f "SCM cell_~a = ~a;\n" (.name f) i))))
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(string-append
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(format #f "SCM ~a (~a);\n" (.name f) (.formals f))
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(format #f "function fun_~a = {.function~a=&~a, .arity=~a};\n" (.name f) arity (.name f) n)
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(format #f "scm ~a = {FUNCTION, .name=~S, .function=0};\n" (function-builtin-name f) (function-scm-name f))
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(format #f "SCM cell_~a;\n\n" (.name f)))))
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(define (function->source f i)
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(string-append
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(format #f "~a.function = g_function;\n" (function-builtin-name f))
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(format #f "functions[g_function++] = fun_~a;\n" (.name f))
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(format #f "cell_~a = g_free.value++;\n" (.name f))
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(format #f "g_cells[cell_~a] = ~a;\n\n" (.name f) (function-builtin-name f))))
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(define (function->environment f i)
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(string-append
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(format #f "a = add_environment (a, ~S, ~a);\n" (function-scm-name f) (function-cell-name f))))
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(define (snarf-symbols string)
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(let* ((matches (append (list-matches "\nscm scm_([a-z_0-9]+) = [{](SPECIAL)," string)
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@ -127,7 +130,6 @@ exec ${GUILE-guile} --no-auto-compile -L $HOME/src/mes/build-aux -L build-aux -e
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(let* ((string (with-input-from-file file-name read-string))
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(functions (snarf-functions string))
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(functions (delete-duplicates functions (lambda (a b) (equal? (.name a) (.name b)))))
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(functions (sort functions (lambda (a b) (string< (.name a) (.name b)))))
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(functions (filter (negate internal?) functions))
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(symbols (snarf-symbols string))
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(base-name (basename file-name ".c"))
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@ -156,4 +158,3 @@ exec ${GUILE-guile} --no-auto-compile -L $HOME/src/mes/build-aux -L build-aux -e
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(map file-write (filter content? (append-map generate-includes files)))))
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;;(define string (with-input-from-file "../mes.c" read-string))
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52
mes.c
52
mes.c
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@ -84,7 +84,7 @@ typedef struct scm_t {
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};
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union {
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int value;
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function* function;
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int function;
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SCM cdr;
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SCM macro;
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SCM vector;
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@ -92,6 +92,9 @@ typedef struct scm_t {
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};
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} scm;
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function functions[200];
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int g_function = 0;
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#include "mes.symbols.h"
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#include "define.h"
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#include "lib.h"
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@ -179,6 +182,8 @@ scm *g_news = 0;
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#define VALUE(x) g_cells[x].value
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#define VECTOR(x) g_cells[x].vector
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#define FUNCTION(x) functions[g_cells[x].function]
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#define NCAR(x) g_news[x].car
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#define NTYPE(x) g_news[x].type
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@ -389,6 +394,9 @@ make_cell (SCM type, SCM car, SCM cdr)
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if (VALUE (type) == CHAR || VALUE (type) == NUMBER) {
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if (car) g_cells[x].car = g_cells[car].car;
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if (cdr) g_cells[x].cdr = g_cells[cdr].cdr;
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} else if (VALUE (type) == FUNCTION) {
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if (car) g_cells[x].car = car;
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if (cdr) g_cells[x].cdr = g_cells[cdr].cdr;
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} else {
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g_cells[x].car = car;
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g_cells[x].cdr = cdr;
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@ -893,19 +901,19 @@ display_ (FILE* f, SCM x)
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SCM
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call (SCM fn, SCM x)
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{
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if ((g_cells[fn].function->arity > 0 || g_cells[fn].function->arity == -1)
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if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
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&& x != cell_nil && TYPE (CAR (x)) == VALUES)
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x = cons (CADAR (x), CDR (x));
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if ((g_cells[fn].function->arity > 1 || g_cells[fn].function->arity == -1)
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if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
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&& x != cell_nil && TYPE (CDR (x)) == PAIR && TYPE (CADR (x)) == VALUES)
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x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
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switch (g_cells[fn].function->arity)
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switch (FUNCTION (fn).arity)
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{
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case 0: return g_cells[fn].function->function0 ();
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case 1: return g_cells[fn].function->function1 (car (x));
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case 2: return g_cells[fn].function->function2 (car (x), cadr (x));
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case 3: return g_cells[fn].function->function3 (car (x), cadr (x), caddr (x));
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case -1: return g_cells[fn].function->functionn (x);
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case 0: return FUNCTION (fn).function0 ();
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case 1: return FUNCTION (fn).function1 (car (x));
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case 2: return FUNCTION (fn).function2 (car (x), cadr (x));
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case 3: return FUNCTION (fn).function3 (car (x), cadr (x), caddr (x));
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case -1: return FUNCTION (fn).functionn (x);
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}
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return cell_unspecified;
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}
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@ -933,6 +941,19 @@ make_char (int x)
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return make_cell (tmp_num, tmp_num2, tmp_num2);
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}
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SCM
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make_function (SCM name, SCM id, SCM arity)
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{
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g_cells[tmp_num3].value = FUNCTION;
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// function fun_read_byte = {.function0=&read_byte, .arity=0};
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// scm scm_read_byte = {FUNCTION, .name="read-int", .function=&fun_read_byte};
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// SCM cell_read_byte = 93;
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function *f = (function*)malloc (sizeof (function));
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f->arity = VALUE (arity);
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g_cells[tmp_num4].value = (long)f;
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return make_cell (tmp_num3, name, tmp_num4);
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}
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SCM
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make_macro (SCM name, SCM x)
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{
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@ -1233,7 +1254,18 @@ display_helper (FILE* f, SCM x, bool cont, char const *sep, bool quote)
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break;
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}
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case REF: display_helper (f, g_cells[x].ref, cont, "", true); break;
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case FUNCTION: fprintf (f, "#<procedure %s>", g_cells[x].name); ;break;
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case FUNCTION:
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{
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fprintf (f, "#<procedure ");
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SCM p = g_cells[x].string;
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char const* n = g_cells[x].name;
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if (p < 0 || p >= g_free.value || g_cells[p].type != PAIR)
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fprintf (f, "%s", g_cells[x].name);
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else
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display_ (f, g_cells[x].string);
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fprintf (f, ">");
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break;
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}
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case BROKEN_HEART: fprintf (f, "<3"); break;
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default:
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if (STRING (x))
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