adding new "translucent" function type for byte-compiled lambdas
This commit is contained in:
JeffBezanson
parent
aa62ae9e96
commit
5ab7a7c1e1
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@ -147,7 +147,7 @@ static value_t fl_set_top_level_value(value_t *args, u_int32_t nargs)
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return args[1];
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}
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extern value_t LAMBDA, COMPILEDLAMBDA;
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extern value_t LAMBDA;
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static value_t fl_setsyntax(value_t *args, u_int32_t nargs)
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{
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@ -160,8 +160,8 @@ static value_t fl_setsyntax(value_t *args, u_int32_t nargs)
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sym->syntax = 0;
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}
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else {
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if (!iscons(args[1]) || (car_(args[1])!=LAMBDA &&
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car_(args[1])!=COMPILEDLAMBDA))
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if (!iscvalue(args[1]) &&
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(!iscons(args[1]) || car_(args[1])!=LAMBDA))
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type_error("set-syntax!", "function", args[1]);
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sym->syntax = args[1];
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}
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@ -153,13 +153,6 @@
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const-to-idx)
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cvec)))
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(define (bytecode g)
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(cons (cvalue.pin (encode-byte-code (aref g 0)))
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(const-to-idx-vec g)))
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(define (bytecode:code b) (car b))
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(define (bytecode:vals b) (cdr b))
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(define (index-of item lst start)
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(cond ((null? lst) #f)
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((eq item (car lst)) start)
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@ -426,7 +419,8 @@
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(else (emit g :vargc (if (atom? args) 0 (length args)))))
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(compile-in g (cons (to-proper args) env) #t (caddr f))
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(emit g :ret)
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`(compiled-lambda ,args ,(bytecode g))))
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(function (encode-byte-code (aref g 0))
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(const-to-idx-vec g))))
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(define (compile f) (compile-f () f))
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@ -445,12 +439,10 @@
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(define (hex5 n)
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(pad-l (number->string n 16) 5 #\0))
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(define (disassemble- b lev)
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(if (and (pair? b)
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(eq? (car b) 'compiled-lambda))
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(disassemble- (caddr b) lev)
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(let ((code (bytecode:code b))
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(vals (bytecode:vals b)))
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(define (disassemble- f lev)
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(let ((fvec (function->vector f)))
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(let ((code (aref fvec 0))
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(vals (aref fvec 1)))
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(define (print-val v)
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(if (and (pair? v) (eq? (car v) 'compiled-lambda))
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(begin (princ "\n")
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@ -495,6 +487,6 @@
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(else #f))))))))
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(define (disassemble b) (disassemble- b 0) (newline))
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(define (disassemble f) (disassemble- f 0) (newline))
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#t
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@ -78,6 +78,9 @@ static void sweep_finalizers()
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t->vtable->finalize(tagptr(tmp, TAG_CVALUE));
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}
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if (!isinlined(tmp) && owned(tmp)) {
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#ifndef NDEBUG
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memset(cv_data(tmp), 0xbb, cv_len(tmp));
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#endif
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free(cv_data(tmp));
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}
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ndel++;
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@ -709,15 +712,6 @@ value_t fl_podp(value_t *args, u_int32_t nargs)
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FL_T : FL_F;
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}
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value_t fl_cv_pin(value_t *args, u_int32_t nargs)
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{
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argcount("cvalue.pin", nargs, 1);
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if (!iscvalue(args[0]))
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lerror(ArgError, "cvalue.pin: must be a byte array");
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cv_pin((cvalue_t*)ptr(args[0]));
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return args[0];
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}
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static void cvalue_init(fltype_t *type, value_t v, void *dest)
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{
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cvinitfunc_t f=type->init;
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@ -922,7 +916,6 @@ static builtinspec_t cvalues_builtin_info[] = {
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{ "sizeof", cvalue_sizeof },
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{ "builtin", fl_builtin },
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{ "copy", fl_copy },
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{ "cvalue.pin", fl_cv_pin },
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{ "plain-old-data?", fl_podp },
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{ "logand", fl_logand },
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@ -99,12 +99,13 @@ stackseg_t stackseg0 = { StaticStack, 0, NULL };
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stackseg_t *current_stack_seg = &stackseg0;
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value_t NIL, FL_T, FL_F, LAMBDA, QUOTE, IF, TRYCATCH;
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value_t BACKQUOTE, COMMA, COMMAAT, COMMADOT, COMPILEDLAMBDA;
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value_t BACKQUOTE, COMMA, COMMAAT, COMMADOT, FUNCTION;
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value_t IOError, ParseError, TypeError, ArgError, UnboundError, MemoryError;
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value_t DivideError, BoundsError, Error, KeyError, EnumerationError;
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value_t conssym, symbolsym, fixnumsym, vectorsym, builtinsym;
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value_t definesym, defmacrosym, forsym, labelsym, printprettysym, setqsym;
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value_t printwidthsym, tsym, Tsym, fsym, Fsym, booleansym, nullsym, elsesym;
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static fltype_t *functiontype;
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static value_t eval_sexpr(value_t e, value_t *penv, int tail, uint32_t envsz);
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static value_t apply_cl(uint32_t nargs);
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@ -470,7 +471,7 @@ static void trace_globals(symbol_t *root)
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while (root != NULL) {
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if (root->binding != UNBOUND)
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root->binding = relocate(root->binding);
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if (iscons(root->syntax))
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if (iscons(root->syntax) || iscvalue(root->syntax))
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root->syntax = relocate(root->syntax);
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trace_globals(root->left);
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root = root->right;
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@ -1441,8 +1442,7 @@ static value_t eval_sexpr(value_t e, value_t *penv, int tail, uint32_t envsz)
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}
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f = Stack[bp+1];
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assert((signed)SP > (signed)bp+1);
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if (__likely(iscons(f))) {
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if (car_(f) == COMPILEDLAMBDA) {
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if (isfunction(f)) {
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i = SP;
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e = apply_cl(nargs);
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SP = i;
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@ -1456,6 +1456,7 @@ static value_t eval_sexpr(value_t e, value_t *penv, int tail, uint32_t envsz)
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return e;
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}
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}
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else if (__likely(iscons(f))) {
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// apply lambda expression
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f = Stack[bp+1] = cdr_(f);
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if (!iscons(f)) goto notpair;
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@ -1550,7 +1551,8 @@ static value_t apply_cl(uint32_t nargs)
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fixnum_t s, lo, hi;
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int64_t accum;
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uint8_t *code;
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value_t func, v, bcode, x, e;
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value_t func, v, x, e;
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function_t *fn;
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value_t *pvals, *lenv, *pv;
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symbol_t *sym;
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cons_t *c;
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@ -1558,20 +1560,17 @@ static value_t apply_cl(uint32_t nargs)
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apply_cl_top:
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captured = 0;
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func = Stack[SP-nargs-1];
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assert(iscons(func));
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assert(iscons(cdr_(func)));
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assert(iscons(cdr_(cdr_(func))));
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x = cdr_(cdr_(func));
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bcode = car_(x);
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code = cv_data((cvalue_t*)ptr(car_(bcode)));
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fn = value2c(function_t*,func);
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code = cv_data((cvalue_t*)ptr(fn->bcode));
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assert(!ismanaged((uptrint_t)code));
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assert(ismanaged(func));
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assert(ismanaged(fn->bcode));
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if (nargs < code[1])
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lerror(ArgError, "apply: too few arguments");
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bp = SP-nargs;
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x = cdr_(x); // cloenv
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PUSH(x);
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PUSH(cdr_(bcode));
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PUSH(fn->env);
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PUSH(fn->vals);
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pvals = &Stack[SP-1];
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ip = 0;
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@ -1653,8 +1652,7 @@ static value_t apply_cl(uint32_t nargs)
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}
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}
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}
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else if (iscons(func)) {
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if (car_(func) == COMPILEDLAMBDA) {
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else if (isfunction(func)) {
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if (op == OP_TCALL) {
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for(s=-1; s < (fixnum_t)i; s++)
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Stack[bp+s] = Stack[SP-i+s];
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@ -1666,10 +1664,9 @@ static value_t apply_cl(uint32_t nargs)
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v = apply_cl(i);
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}
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}
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else {
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else if (iscons(func)) {
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v = _applyn(i);
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}
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}
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else {
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type_error("apply", "function", func);
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}
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@ -2140,19 +2137,20 @@ static value_t apply_cl(uint32_t nargs)
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PUSH(Stack[bp]); // env has already been captured; share
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}
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if (op == OP_CLOSURE) {
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c = (cons_t*)ptr(v=cons_reserve(3));
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e = cdr_(Stack[SP-2]); // closure to copy
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//if (!iscons(e)) goto notpair;
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c->car = COMPILEDLAMBDA;
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c->cdr = tagptr(c+1, TAG_CONS); c++;
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c->car = car_(e); //argsyms
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c->cdr = tagptr(c+1, TAG_CONS); c++;
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e = cdr_(e);
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//if (!iscons(e=cdr_(e))) goto notpair;
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c->car = car_(e); //body
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c->cdr = Stack[SP-1]; //env
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pv = alloc_words(6);
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x = Stack[SP-2]; // closure to copy
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assert(isfunction(x));
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pv[0] = ((value_t*)ptr(x))[0];
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assert(pv[0] == functiontype);
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pv[1] = (value_t)&pv[3];
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pv[2] = ((value_t*)ptr(x))[2];
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pv[3] = ((value_t*)ptr(x))[3];
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assert(isstring(pv[3]));
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pv[4] = ((value_t*)ptr(x))[4];
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assert(isvector(pv[4]));
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pv[5] = Stack[SP-1]; // env
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POPN(1);
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Stack[SP-1] = v;
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Stack[SP-1] = tagptr(pv, TAG_CVALUE);
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}
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break;
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@ -2180,6 +2178,80 @@ void assign_global_builtins(builtinspec_t *b)
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}
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}
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static void print_function(value_t v, ios_t *f, int princ)
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{
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(void)princ;
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function_t *fn = value2c(function_t*,v);
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outs("#function(", f);
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int newindent = HPOS;
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fl_print_child(f, fn->bcode, 0); outindent(newindent, f);
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fl_print_child(f, fn->vals, 0); outindent(newindent, f);
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fl_print_child(f, fn->env, 0);
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outc(')', f);
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}
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static void print_traverse_function(value_t v)
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{
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function_t *fn = value2c(function_t*,v);
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print_traverse(fn->bcode);
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print_traverse(fn->vals);
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print_traverse(fn->env);
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}
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static void relocate_function(value_t oldv, value_t newv)
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{
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(void)oldv;
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function_t *fn = value2c(function_t*,newv);
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fn->bcode = relocate(fn->bcode);
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fn->vals = relocate(fn->vals);
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fn->env = relocate(fn->env);
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}
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static value_t fl_function(value_t *args, uint32_t nargs)
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{
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if (nargs != 3)
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argcount("function", nargs, 2);
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if (!isstring(args[0]))
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type_error("function", "string", args[0]);
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if (!isvector(args[1]))
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type_error("function", "vector", args[1]);
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cv_pin((cvalue_t*)ptr(args[0]));
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value_t fv = cvalue(functiontype, sizeof(function_t));
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function_t *fn = value2c(function_t*,fv);
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fn->bcode = args[0];
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fn->vals = args[1];
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if (nargs == 3)
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fn->env = args[2];
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else
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fn->env = NIL;
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return fv;
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}
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static value_t fl_function2vector(value_t *args, uint32_t nargs)
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{
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argcount("function->vector", nargs, 1);
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value_t v = args[0];
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if (!iscvalue(v) || cv_class((cvalue_t*)ptr(v)) != functiontype)
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type_error("function->vector", "function", v);
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value_t vec = alloc_vector(3, 0);
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function_t *fn = value2c(function_t*,args[0]);
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vector_elt(vec,0) = fn->bcode;
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vector_elt(vec,1) = fn->vals;
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vector_elt(vec,2) = fn->env;
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return vec;
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}
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static cvtable_t function_vtable = { print_function, relocate_function,
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NULL, print_traverse_function };
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static builtinspec_t core_builtin_info[] = {
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{ "function", fl_function },
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{ "function->vector", fl_function2vector },
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{ "gensym", gensym },
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{ "hash", fl_hash },
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{ NULL, NULL }
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};
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static void lisp_init(void)
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{
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int i;
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@ -2198,7 +2270,7 @@ static void lisp_init(void)
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FL_T = builtin(F_TRUE);
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FL_F = builtin(F_FALSE);
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LAMBDA = symbol("lambda");
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COMPILEDLAMBDA = symbol("compiled-lambda");
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FUNCTION = symbol("function");
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QUOTE = symbol("quote");
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TRYCATCH = symbol("trycatch");
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BACKQUOTE = symbol("backquote");
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@ -2259,8 +2331,6 @@ static void lisp_init(void)
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#endif
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cvalues_init();
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set(symbol("gensym"), cbuiltin("gensym", gensym));
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set(symbol("hash"), cbuiltin("hash", fl_hash));
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char buf[1024];
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char *exename = get_exename(buf, sizeof(buf));
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@ -2273,6 +2343,11 @@ static void lisp_init(void)
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memory_exception_value = list2(MemoryError,
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cvalue_static_cstring("out of memory"));
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functiontype = define_opaque_type(FUNCTION, sizeof(function_t),
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&function_vtable, NULL);
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assign_global_builtins(core_builtin_info);
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builtins_init();
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}
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@ -93,6 +93,8 @@ typedef struct _symbol_t {
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(((unsigned char*)ptr(v)) < fromspace+heapsize))
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#define isgensym(x) (issymbol(x) && ismanaged(x))
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#define isfunction(x) (iscvalue(x) && (cv_class((cvalue_t*)ptr(x))==functiontype))
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extern value_t *Stack;
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extern uint32_t SP;
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#define PUSH(v) (Stack[SP++] = (v))
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@ -223,6 +225,12 @@ typedef struct {
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char _space[1];
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} cprim_t;
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typedef struct {
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value_t bcode;
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value_t vals;
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value_t env;
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} function_t;
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#define CPRIM_NWORDS 2
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#define MAX_INL_SIZE 96
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@ -551,8 +551,10 @@ static value_t do_read_sexpr(value_t label)
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}
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PUSH(NIL);
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read_list(&Stack[SP-1], UNBOUND);
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v = POP();
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return apply(toplevel_eval(sym), v);
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v = symbol_value(sym);
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if (v == UNBOUND)
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raise(list2(UnboundError, sym));
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return apply(v, POP());
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case TOK_OPENB:
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return read_vector(label, TOK_CLOSEB);
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case TOK_SHARPOPEN:
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@ -102,8 +102,8 @@
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(define (char? x) (eq? (typeof x) 'wchar))
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(define (function? x)
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(or (builtin? x)
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(and (pair? x) (or (eq (car x) 'lambda)
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(eq (car x) 'compiled-lambda)))))
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(eq (typeof x) 'function)
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(and (pair? x) (eq (car x) 'lambda))))
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(define procedure? function?)
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(define (caar x) (car (car x)))
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@ -1018,7 +1018,7 @@ typedef struct _fltype_t {
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new evaluator todo:
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* need builtin = to handle nans properly, fix equal? on nans
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- builtin quasi-opaque function type
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* builtin quasi-opaque function type
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fields: signature, maxstack, bcode, vals, cloenv
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function->vector
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* make (for ...) a special form
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