2008-06-30 21:54:22 -04:00
|
|
|
* setf
|
|
|
|
* plists
|
|
|
|
* backquote
|
|
|
|
* symbol< (make < generic), generic compare function
|
|
|
|
? (cdr nil) should be nil
|
|
|
|
* multiple-argument mapcar
|
|
|
|
? multi-argument apply. for builtins, just push them. for lambdas, must
|
|
|
|
cons together the evaluated arguments.
|
|
|
|
? option *print-shared*. if nil, it still handles circular references
|
|
|
|
but does not specially print non-circular shared structure
|
|
|
|
? option *print-circle*
|
|
|
|
* read support for #' for compatibility
|
|
|
|
* #\c read character as code (including UTF-8 support!)
|
|
|
|
* #| |# block comments
|
2009-01-02 18:00:21 -05:00
|
|
|
? here-data for binary serialization. proposed syntax:
|
2008-06-30 21:54:22 -04:00
|
|
|
#>size:data, e.g. #>6:000000
|
2009-01-02 18:00:21 -05:00
|
|
|
? better read syntax for packed arrays, e.g. #double[3 1 4]
|
2008-06-30 21:54:22 -04:00
|
|
|
* use syntax environment concept for user-defined macros to plug
|
|
|
|
that hole in the semantics
|
|
|
|
* make more builtins generic. if typecheck fails, call out to the
|
|
|
|
generic version to try supporting more types.
|
|
|
|
compare/equal
|
|
|
|
+-*/< for all numeric types
|
|
|
|
length for all sequences
|
|
|
|
? aref/aset for all sequences (vector, list, c-array)
|
|
|
|
? copy
|
|
|
|
* fixnump, all numeric types should pass numberp
|
|
|
|
- make sure all uses of symbols don't assume symbols are unmovable without
|
|
|
|
checking ismanaged()
|
|
|
|
* eliminate compiler warnings
|
|
|
|
* fix printing nan and inf
|
2008-08-04 21:43:12 -04:00
|
|
|
* move to "2.5-bit" type tags
|
2008-06-30 21:54:22 -04:00
|
|
|
? builtin abs()
|
|
|
|
- try adding optional arguments, (lambda (x (opt 0)) ...), see if performance
|
|
|
|
is acceptable
|
|
|
|
* (syntax-environment) to return it as an assoc list
|
|
|
|
* (environment) for variables, constantp
|
|
|
|
* prettier printing
|
|
|
|
|
|
|
|
* readable gensyms and #:
|
|
|
|
. #:n reads similar to #n=#.(gensym) the first time, and #n# after
|
|
|
|
* circular equal
|
|
|
|
* integer/truncate function
|
|
|
|
? car-circularp, cdr-circularp, circularp
|
|
|
|
- hashtable. plan as equal-hash, over three stages:
|
|
|
|
1. first support symbol and fixnum keys, use ptrhash. only values get
|
|
|
|
relocated on GC.
|
|
|
|
2. create a version of ptrhash that uses equal() and hash(). if a key is
|
|
|
|
inserted requiring this, switch vtable pointer to use these functions.
|
|
|
|
both keys and values get relocated on GC.
|
|
|
|
3. write hash() for pairs and vectors. now everything works.
|
|
|
|
- expose eq-hashtable to user
|
|
|
|
- other backquote optimizations:
|
|
|
|
* (nconc x) => x for any x
|
|
|
|
. (copy-list (list|append|nconc ...)) => (list|append|nconc ...)
|
|
|
|
* (apply vector (list ...)) => (vector ...)
|
|
|
|
. (nconc (cons x nil) y) => (cons x y)
|
|
|
|
* let form without initializers (let (a b) ...), defaults to nil
|
|
|
|
* print (quote a) as 'a, same for ` etc.
|
|
|
|
|
|
|
|
- template keyword arguments. you write
|
|
|
|
(template (:test eq) (:key caar)
|
|
|
|
(defun assoc (item lst)
|
|
|
|
(cond ((atom lst) ())
|
|
|
|
((:test (:key lst) item) (car lst))
|
|
|
|
(t (assoc item (cdr lst))))))
|
|
|
|
|
|
|
|
This writes assoc as a macro that produces a call to a pre-specialized
|
|
|
|
version of the function. For example
|
|
|
|
(assoc x l :test equal)
|
|
|
|
first tries to look up the variant '(equal caar) in the dictionary for assoc.
|
|
|
|
If it doesn't exist it gets generated and stored. The result is a lambda
|
|
|
|
expression.
|
|
|
|
The macro returns ((lambda (item lst) <code for assoc>) x l).
|
|
|
|
We might have to require different syntax for template invocations inside
|
|
|
|
template definitions, such as
|
|
|
|
((t-instance assoc eq :key) item lst)
|
|
|
|
which passes along the same key but always uses eq.
|
|
|
|
Alternatively, we could use the keysyms without colons to name the values
|
|
|
|
of the template arguments, so the keysyms are always used as markers and
|
|
|
|
never appear to have values:
|
|
|
|
(template (:test eq) (:key caar)
|
|
|
|
(defun assoc? (item lst)
|
|
|
|
(cond ((atom lst) ())
|
|
|
|
((test (key lst) item) ...
|
|
|
|
...
|
|
|
|
(assoc x y :test test :key key)
|
|
|
|
This would be even easier if the keyword syntax were something like
|
|
|
|
(: test eq)
|
|
|
|
|
|
|
|
|
|
|
|
possible optimizations:
|
|
|
|
* delay environment creation. represent environment on the stack as
|
|
|
|
alternating symbols/values, or if cons instead of symbol then traverse
|
|
|
|
as assoc list. only explicitly cons the whole thing when making a closure
|
|
|
|
* cons_reserve(n) interface, guarantees n conses available without gc.
|
|
|
|
it could even link them together for you more efficiently
|
|
|
|
* assoc builtin
|
|
|
|
* special check for constant symbol when evaluating head since that's likely
|
|
|
|
* remove the loop from cons_reserve. move all initialization to the loops
|
|
|
|
that follow calls to cons_reserve.
|
|
|
|
- case of lambda expression in head (as produced by let), can just modify
|
|
|
|
env in-place in tail position
|
2008-10-30 22:50:00 -04:00
|
|
|
- allocate memory by mmap'ing a large uncommitted block that we cut
|
|
|
|
in half. then each half heap can be grown without moving addresses.
|
2009-01-02 18:00:21 -05:00
|
|
|
* try making (list ...) a builtin by moving the list-building code to
|
2008-12-20 01:16:00 -05:00
|
|
|
a static function, see if vararg call performance is affected.
|
|
|
|
- try making foldl a builtin, implement table iterator as table.foldl
|
2009-01-02 18:00:21 -05:00
|
|
|
. not great, since then it can't be CPS converted
|
2008-06-30 21:54:22 -04:00
|
|
|
* represent lambda environment as a vector (in lispv)
|
|
|
|
x setq builtin (didn't help)
|
2009-02-23 21:21:16 -05:00
|
|
|
* list builtin, to use cons_reserve
|
2008-06-30 21:54:22 -04:00
|
|
|
(- let builtin, to further avoid env consing)
|
|
|
|
unconventional interpreter builtins that can be used as a compilation
|
|
|
|
target without moving away from s-expressions:
|
|
|
|
- (*global* . a) ; special form, don't look in local env first
|
|
|
|
- (*local* . 2) ; direct stackframe access
|
|
|
|
for internal use:
|
2008-07-26 00:03:48 -04:00
|
|
|
* a special version of apply that takes arguments on the stack, to avoid
|
2008-06-30 21:54:22 -04:00
|
|
|
consing when implementing "call-with" style primitives like trycatch,
|
|
|
|
hashtable-foreach, or the fl_apply API
|
2008-10-30 22:50:00 -04:00
|
|
|
- partial_apply, reapply interface so other iterators can use the same
|
|
|
|
fast mechanism as for
|
2008-08-02 12:18:39 -04:00
|
|
|
* try this environment representation:
|
2008-07-11 22:58:55 -04:00
|
|
|
for all kinds of functions (except maybe builtin special forms) push
|
|
|
|
all arguments on the stack, either evaluated or not.
|
|
|
|
for lambdas, push the lambda list and next-env pointers.
|
|
|
|
to capture, save the n+2 pointers to a vector
|
|
|
|
. this uses n+2 heap or stack words per environment instead of 2n+1 words
|
|
|
|
. argument handling is more uniform which could lead to simplifications,
|
|
|
|
and a more efficient apply() entry point
|
|
|
|
. disadvantage is looking through the lambda list on every lookup. maybe
|
|
|
|
improve by making lambda lists vectors somehow?
|
2008-07-26 18:04:02 -04:00
|
|
|
* fast builtin bounded iteration construct (for lo hi (lambda (x) ...))
|
2008-12-27 01:02:53 -05:00
|
|
|
* represent guest function as a tagged function pointer; allocate nothing
|
2009-01-02 18:00:21 -05:00
|
|
|
- when an instance of (array type n) is requested, use (array type)
|
|
|
|
instead, unless the value is part of an aggregate (e.g. struct).
|
|
|
|
. this avoids allocating a new type for every size.
|
|
|
|
. and/or add function array.alloc
|
2009-03-16 23:29:17 -04:00
|
|
|
x preallocate all byte,int8,uint8 values, and some wchars (up to 0x31B7?)
|
|
|
|
. this made no difference in a string.map microbenchmark
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
bugs:
|
|
|
|
* with the fully recursive (simpler) relocate(), the size of cons chains
|
|
|
|
is limited by the process stack size. with the iterative version we can
|
|
|
|
have unlimited cdr-deep structures.
|
|
|
|
* in #n='e, the case that makes the cons for 'e needs to use label fixup
|
|
|
|
* symbol token |.| does not work
|
|
|
|
* ltable realloc not multiplying by sizeof(unsigned long)
|
|
|
|
* not relocating final cdr in iterative version if it is a vector
|
|
|
|
- (setf (car x) y) doesn't return y
|
|
|
|
* reader needs to check errno in isnumtok
|
|
|
|
* prettyprint size measuring is not utf-8 correct
|
2009-04-01 00:31:49 -04:00
|
|
|
* stack is too limited.
|
|
|
|
. add extra heap-allocated stack segments as needed.
|
2009-03-26 23:06:55 -04:00
|
|
|
* argument list length is too limited.
|
|
|
|
need to fix it for: +,-,*,/,&,|,$,list,vector,apply,string,array
|
|
|
|
. for builtins, make Nth argument list of rest args
|
|
|
|
. write a function to evaluate directly from list to list, use it for
|
|
|
|
Nth arg and for user function rest args
|
|
|
|
. modify vararg builtins accordingly
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
|
|
|
|
femtoLisp3...with symbolic C interface
|
|
|
|
|
|
|
|
c values are builtins with value > N_BUILTINS
|
|
|
|
((u_int32_t*)cvalue)[0] & 0x3 must always be 2 to distinguish from vectors
|
|
|
|
|
|
|
|
typedef struct _cvtable_t {
|
|
|
|
void (*relocate)(struct _cvalue_t *);
|
|
|
|
void (*free)(struct _cvalue_t *);
|
|
|
|
void (*print)(struct _cvalue_t *, FILE *);
|
|
|
|
} cvtable_t;
|
|
|
|
|
|
|
|
c type representations:
|
|
|
|
symbols void, [u]int[8,16,32,64], float, double, [u]char, [u]short,
|
|
|
|
[u]int, [u]long, lispvalue
|
|
|
|
(c-function ret-type (argtype ...))
|
2008-08-28 23:27:59 -04:00
|
|
|
(array type[ N])
|
2008-06-30 21:54:22 -04:00
|
|
|
(struct ((name type) (name type) ...))
|
|
|
|
(union ((name type) (name type) ...))
|
2008-08-28 23:27:59 -04:00
|
|
|
(mlayout ((name type offset) (name type offset) ...))
|
2008-06-30 21:54:22 -04:00
|
|
|
(enum (name1 name2 ...))
|
|
|
|
(pointer type)
|
|
|
|
|
|
|
|
constructors:
|
|
|
|
([u]int[8,16] n)
|
|
|
|
([u]int32 hi lo)
|
|
|
|
([u]int64 b3 b2 b1 b0)
|
|
|
|
(float hi lo) or (float "3.14")
|
|
|
|
(double b3 b2 b1 b0) or (double "3.14")
|
2008-08-28 23:27:59 -04:00
|
|
|
(array ctype val ...)
|
|
|
|
(struct ((name type) ...) val ...)
|
2008-08-07 01:08:10 -04:00
|
|
|
(pointer ctype) ; null pointer
|
2008-06-30 21:54:22 -04:00
|
|
|
(pointer cvalue) ; constructs pointer to the given value
|
2008-08-07 01:08:10 -04:00
|
|
|
; same as (pointer (typeof x) x)
|
|
|
|
(pointer ctype cvalue) ; pointer of given type, to given value
|
|
|
|
(pointer ctype cvalue addr) ; (ctype*)((char*)cvalue + addr)
|
2008-06-30 21:54:22 -04:00
|
|
|
(c-function ret-type (argtype ...) ld-symbol-name)
|
|
|
|
|
|
|
|
? struct/enum tag:
|
|
|
|
(struct 'tag <initializer>) or (pointer (struct tag))
|
|
|
|
where tag is a global var with a value ((name type) ...)
|
|
|
|
|
|
|
|
|
|
|
|
representing c data from lisp is the tricky part to make really elegant and
|
|
|
|
efficient. the most elegant but too inefficient option is not to have opaque
|
|
|
|
C values at all and always marshal to/from native lisp values like #int16[10].
|
|
|
|
the next option is to have opaque values "sometimes", for example returning
|
|
|
|
them from C functions but printing them using their lisp representations.
|
|
|
|
the next option is to relax the idea that C values of a certain type have a
|
|
|
|
specific lisp structure, and use a coercion system that "tries" to translate
|
|
|
|
a lisp value to a specified C type. for example [0 1 2], (0 1 2),
|
|
|
|
#string[0 1 2], etc. might all be accepted by a C function taking int8_t*.
|
|
|
|
you could say (c-coerce <lispvalue> <typedesc>) and get a cvalue back or
|
|
|
|
an error if the conversion fails.
|
|
|
|
|
|
|
|
the final option is to have cvalues be the only officially-sanctioned
|
|
|
|
representation of c data, and make them via constructors, like
|
|
|
|
(int32 hi lo) returns an int32 cvalue
|
|
|
|
(struct '((name type) (name type) ...) a b ...) makes a struct
|
|
|
|
there is a constructor function for each primitive C type.
|
|
|
|
you can print these by brute force as e.g. #.(int32 hi lo)
|
|
|
|
then all checking just looks like functions checking their arguments
|
|
|
|
|
|
|
|
this option seems almost ideal. what's wrong with it?
|
|
|
|
. to construct cvalues from lisp you have to build code instead of data
|
|
|
|
. it seems like it should take more explicit advantage of tagged vectors
|
|
|
|
. should you accept multiple forms? for example
|
|
|
|
(array 'int8 0 1 2) or (array 'int8 [0 1 2])
|
|
|
|
if you're going to be that permissive, why not allow [0 1 2] to be passed
|
|
|
|
directly to a function that expects int8_t* and do the conversion
|
|
|
|
implicitly?
|
|
|
|
. even if these c-primitive-constructor functions exist, you can still
|
|
|
|
write things like c-coerce (in lisp, even) and hack in implicit
|
|
|
|
conversion attempts when something other than a cvalue is passed.
|
|
|
|
. the printing code is annoying, because it's not enough to print readably,
|
|
|
|
you have to print evaluably.
|
|
|
|
. solution: constructor notation, #int32(hi lo)
|
|
|
|
|
|
|
|
in any case, "opaque" cvalues will not really be opaque because we want to
|
|
|
|
know their types and be able to take them apart on the byte level from lisp.
|
|
|
|
C code can get references to lisp values and manipulate them using lisp
|
|
|
|
operations like car, so to be fair it should work vice-versa; give
|
|
|
|
c references to lisp code and let it use c operations like * on them.
|
|
|
|
you can write lisp in c and c in lisp, though of course you don't usually
|
|
|
|
want to. however, c written in lisp can be generated by a macro, printed,
|
|
|
|
and fed to TCC for compilation.
|
|
|
|
|
|
|
|
|
|
|
|
for a struct the names and types are parameters of the type, not the
|
|
|
|
constructor, so it seems more correct to do
|
|
|
|
|
|
|
|
((struct (name type) (name type) ...) (val val ...))
|
|
|
|
|
|
|
|
where struct returns a constructor. but this isn't practical because it
|
|
|
|
can't be printed in constructor notation and the type is a lambda rather
|
|
|
|
than a more sensible expression.
|
|
|
|
|
|
|
|
|
|
|
|
notice constructor calls and type representations are "similar". they
|
|
|
|
should be related formally:
|
|
|
|
|
|
|
|
(define (new type)
|
|
|
|
(if (symbolp type) (apply (eval type) ())
|
|
|
|
(apply (eval (car type)) (cdr type))))
|
|
|
|
|
2008-08-28 23:27:59 -04:00
|
|
|
NOTE: this relationship is no longer true. we don't want to have to
|
|
|
|
construct 1 cvalue from 1 lisp value every time, since that could
|
|
|
|
require allocating a totally redundant list or vector. it should be
|
|
|
|
possible to make a cvalue from a series of lisp arguments. for
|
|
|
|
example there are now 2 different ways to make an array:
|
|
|
|
|
|
|
|
1) from series of arguments: (array type val0 val1 ...)
|
|
|
|
2) from 1 (optional) value: (c-value '(array int8[ size])[ V])
|
|
|
|
|
|
|
|
constructors will internally use the second form to initialize elements
|
|
|
|
of aggregates. e.g. 'array' in the first case will conceptually call
|
|
|
|
(c-value type val0)
|
|
|
|
(c-value type val1)
|
|
|
|
...
|
|
|
|
|
|
|
|
|
2008-06-30 21:54:22 -04:00
|
|
|
for aggregate types, you can keep a variable referring to the relevant
|
|
|
|
piece:
|
|
|
|
|
|
|
|
(setq point '((x int) (y int)))
|
2008-08-28 23:27:59 -04:00
|
|
|
(struct point 2 3) ; looks like c declaration 'struct point x;'
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
a type is a function, so something similar to typedef is achieved by:
|
|
|
|
|
|
|
|
(define (point_t vals) (struct point vals))
|
|
|
|
|
|
|
|
design points:
|
|
|
|
. type constructors will all be able to take 1 or 0 arguments, so i could say
|
|
|
|
(new (typeof val)) ; construct similar
|
|
|
|
(define (new type)
|
|
|
|
(if (symbolp type) (apply (eval type) ())
|
|
|
|
(apply (eval (car type)) (cdr type))))
|
|
|
|
. values can be marked as autorelease (1) if user says so, (2) if we can
|
|
|
|
prove that it's ok (e.g. we only allocated the value using malloc because
|
|
|
|
it is too large to move on every GC).
|
|
|
|
in the future you should be able to specify an arbitrary finalization
|
|
|
|
function, not just free().
|
|
|
|
. when calling a C function, a value of type_t can be passed to something
|
|
|
|
expecting a type_t* by taking the address of the representation. BUT
|
|
|
|
this is dangerous if the C function might save a reference.
|
|
|
|
a type_t* can be passed as a type_t by copying the representation.
|
|
|
|
. you can use (pointer v) to switch v to "malloc'd representation", in
|
|
|
|
which case the value is no longer autoreleased, but you can do whatever
|
|
|
|
you want with the pointer. (other option is to COPY v when making a
|
|
|
|
pointer to it, but this still doesn't prevent C from holding a reference
|
|
|
|
too long)
|
|
|
|
|
|
|
|
|
|
|
|
add a cfunction binding to symbols. you register in C simply by setting
|
|
|
|
this binding to a function pointer, then
|
|
|
|
|
|
|
|
(defun open (path flags)
|
|
|
|
; could insert type checks here
|
|
|
|
(ccall 'int32 'open path flags))
|
|
|
|
|
|
|
|
(setq fd (open "path" 0))
|
|
|
|
|
|
|
|
using libdl you could even omit the registration step and extra binding
|
|
|
|
|
|
|
|
this is possible:
|
|
|
|
(defun malloc (size)
|
|
|
|
(ccall `(array int8 ,size) 'malloc size))
|
|
|
|
;ret type ;f name ; . args
|
|
|
|
|
|
|
|
|
|
|
|
vtable:
|
|
|
|
we'd like to be able to define new lisp "types", like vectors
|
|
|
|
and hash tables, using this. there needs to be a standard value interface
|
|
|
|
you can implement in C and attach a vtable to some c values.
|
|
|
|
interface: relocate, finalize, print(, copy)
|
|
|
|
|
|
|
|
implementation plan:
|
|
|
|
- write cvalue constructors
|
|
|
|
- if a head evaluates to a cvalue, call the pointer directly with the arg array
|
|
|
|
. this is the "guest function" interface, a C function written specifically
|
|
|
|
to the femtolisp API. its type must be
|
|
|
|
'(c-function lispvalue ((pointer lispvalue) uint32))
|
|
|
|
which corresponds to
|
|
|
|
value_t func(value_t *args, u_int32_t nargs);
|
|
|
|
. this interface is useful for writing additional builtins, types,
|
|
|
|
interpreter extensions, etc. more efficient.
|
|
|
|
. one of these functions could also be called with
|
|
|
|
(defun func args
|
|
|
|
(ccall 'func 'lispvalue (array 'lispvalue args) (length args)))
|
|
|
|
- these functions are effectively builtins and should have names so they
|
|
|
|
can be printed as such.
|
|
|
|
. have a registration function
|
|
|
|
void guest_function(value_t (*f)(value_t*,u_int32_t), const char *name);
|
|
|
|
so at least the function type can be checked from C
|
|
|
|
. set a flags bit for functions registered this way so we can identify
|
|
|
|
them quickly
|
|
|
|
|
|
|
|
- ccall lisp builtin, (ccall rettype name . args). if name has no cfunc
|
|
|
|
binding, looks it up lazily with dlsym and stores the result.
|
|
|
|
this is a guest function that handles type checking, translation, and
|
|
|
|
invocation of foreign c functions.
|
|
|
|
|
|
|
|
- you could register builtins from lisp like this:
|
|
|
|
(defun dlopen (name flags) (ccall '(pointer void) 'dlopen name flags))
|
|
|
|
(defun dlsym (handle name type) (ccall type 'dlsym handle name))
|
|
|
|
(define lisp-process (dlopen nil 0))
|
|
|
|
(define vector-sym
|
|
|
|
(dlsym lisp-process 'int_vector
|
|
|
|
'(function lispvalue (pointer lispvalue) uint32)))
|
|
|
|
(ccall 'void 'guest_function vector-sym 'vector)
|
|
|
|
|
|
|
|
- write c extensions cref, cset, typeof, sizeof, cvaluep
|
|
|
|
* read, print, vectorp methods for vectors
|
|
|
|
- quoted string "" reading, produces #(c c c c ...)
|
|
|
|
* get rid of primitive builtins read,print,princ,load,exit,
|
|
|
|
implement using ccall
|
|
|
|
|
|
|
|
|
|
|
|
other possible design:
|
|
|
|
- just add two builtins, call and ccall.
|
|
|
|
(call 'name arg arg arg) lisp guest function interface
|
|
|
|
we can say e.g.
|
|
|
|
(defmacro vector args `(call 'vector ,.args))
|
|
|
|
- basically the question is whether to introduce a new kind of callable
|
|
|
|
object or to do everything through the existing builtin mechanism
|
|
|
|
. macros cannot be applied, so without a new kind of callable 'vector'
|
|
|
|
would have to be a lisp function, entailing argument consing...
|
|
|
|
(defun builtin (name)
|
|
|
|
(guest-function name
|
|
|
|
(dlsym lisp-process name '(function value (pointer value) uint32))))
|
|
|
|
then you can print a guest function as e.g.
|
|
|
|
#.(builtin 'vector)
|
|
|
|
|
|
|
|
#name(x y z) reads as a tagged vector
|
|
|
|
#(x y z) is the same as #vector(x y z)
|
|
|
|
should be internally the same as well, so non-taggedness does not formally
|
|
|
|
exist.
|
|
|
|
|
|
|
|
|
|
|
|
then we can write the vector clause in backquote as e.g.
|
|
|
|
|
|
|
|
(if (vectorp x)
|
|
|
|
(let ((body (bq-process (vector-to-list x))))
|
|
|
|
(if (eq (tag x) 'vector)
|
|
|
|
(list 'list-to-vector body)
|
|
|
|
(list 'apply 'tagged-vector
|
|
|
|
(list cons (list quote (tag x)) body))))
|
|
|
|
(list quote x))
|
|
|
|
|
|
|
|
|
|
|
|
setup plan:
|
2008-08-28 23:27:59 -04:00
|
|
|
* create source directory and svn repository, move llt sources into it
|
2008-06-30 21:54:22 -04:00
|
|
|
* write femtolisp.h, definitions for extensions to #include
|
|
|
|
- add fl_ prefix to all exported functions
|
2008-08-28 23:27:59 -04:00
|
|
|
* port read and print to llt iostreams
|
2008-06-30 21:54:22 -04:00
|
|
|
* get rid of flutils; use ptrhash instead
|
|
|
|
* builtinp needs to be a builtin ;) to distinguish lisp builtins from cvalues
|
|
|
|
* allocation and gc for cvalues
|
|
|
|
- interface functions fl_list(...), fl_apply
|
|
|
|
e.g. fl_apply(fl_eval(fl_symbol("+")), fl_list(fl_number(2),fl_number(3)))
|
|
|
|
and fl_symval("+"), fl_cons, etc.
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
vector todo:
|
|
|
|
* compare for vectors
|
|
|
|
- (aref v i j k) does (reduce aref v '(i j k)); therefore (aref v) => v
|
|
|
|
- (aref v ... [1 2 3] ...) vectorized indexing
|
|
|
|
- make (setf (aref v i j k) x) expand to (aset (aref v i j) k x)
|
|
|
|
these should be done using the ccall interface:
|
|
|
|
- concatenate
|
|
|
|
- copy-vec
|
|
|
|
- (range i j step) to make integer ranges
|
|
|
|
- (rref v start stop), plus make it settable! (rset v start stop rhs)
|
|
|
|
lower priority:
|
|
|
|
- find (strstr)
|
|
|
|
|
|
|
|
functions to be generic over vec/list:
|
|
|
|
* compare, equal, length
|
|
|
|
|
|
|
|
constructor notation:
|
|
|
|
|
|
|
|
#func(a b c) does (apply func '(a b c))
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
how we will allocate cvalues
|
|
|
|
|
|
|
|
a vector's size will be a lisp-value number. we will set bit 0x2 to indicate
|
|
|
|
a resize request, and bit 0x1 to indicate that it's actually a cvalue.
|
|
|
|
|
|
|
|
every cvalue will have the following fields, followed by some number of
|
|
|
|
words according to how much space is needed:
|
|
|
|
|
|
|
|
value_t size; // | 0x2
|
|
|
|
cvtable_t *vtable;
|
|
|
|
struct {
|
|
|
|
#ifdef BITS64
|
|
|
|
unsigned pad:32;
|
|
|
|
#endif
|
|
|
|
unsigned whatever:27;
|
|
|
|
unsigned mark:1;
|
|
|
|
unsigned hasparent:1;
|
|
|
|
unsigned islispfunction:1;
|
|
|
|
unsigned autorelease:1;
|
|
|
|
unsigned inlined:1;
|
|
|
|
} flags;
|
|
|
|
value_t type;
|
|
|
|
size_t len; // length of *data in bytes
|
|
|
|
//void *data; // present if !inlined
|
|
|
|
//value_t parent; // present if hasparent
|
|
|
|
|
|
|
|
size/vtable have the same meaning as vector size/elt[0] for relocation
|
|
|
|
obviously we only relocate parent and type. if vtable->relocate is present,
|
|
|
|
we call it at the end of the relocate process, and it must touch every
|
|
|
|
lisp value reachable from it.
|
|
|
|
|
|
|
|
when a cvalue is created with a finalizer, its address is added to a special
|
|
|
|
list. before GC, everything in that list has its mark bit set. when
|
|
|
|
we relocate a cvalue, clear the bit. then go through the list to call
|
|
|
|
finalizers on dead values. this is O(n+m) where n is amt of live data and m
|
|
|
|
is # of values needing finalization. we expect m << heapsize.
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
Goal: bootstrap a lisp system where we can do "anything" purely in lisp
|
|
|
|
starting with the minimal builtins needed for successive levels of
|
|
|
|
completeness:
|
|
|
|
|
|
|
|
1. Turing completeness
|
|
|
|
quote, if, lambda, eq, atom, cons, car, cdr
|
|
|
|
|
|
|
|
2. Naming
|
|
|
|
set
|
|
|
|
|
|
|
|
3. Control flow
|
|
|
|
progn, prog1, apply, eval
|
|
|
|
call/cc needed for true completeness, but we'll have attempt, raise
|
|
|
|
|
|
|
|
4. Predicate completeness
|
|
|
|
symbolp, numberp, builtinp
|
|
|
|
|
|
|
|
5. Syntax
|
|
|
|
macro
|
|
|
|
|
|
|
|
6. I/O completeness
|
|
|
|
read, print
|
|
|
|
|
|
|
|
7. Mutable state
|
|
|
|
rplaca, rplacd
|
|
|
|
|
|
|
|
8. Arithmetic completeness
|
|
|
|
+, -, *, /, <
|
|
|
|
|
|
|
|
9. The missing data structure(s): vector
|
|
|
|
alloc, aref, aset, vectorp, length
|
|
|
|
|
|
|
|
10. Real-world completeness (escape hatch)
|
|
|
|
ccall
|
|
|
|
|
|
|
|
---
|
|
|
|
11. Misc unnecessary
|
|
|
|
while, label, cond, and, or, not, boundp, vector
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
exception todo:
|
|
|
|
|
|
|
|
* silence 'in file' errors when user frame active
|
|
|
|
* add more useful data to builtin exception types:
|
|
|
|
(UnboundError x)
|
|
|
|
(BoundsError vec index)
|
|
|
|
(TypeError fname expected got)
|
|
|
|
(Error v1 v2 v3 ...)
|
|
|
|
* attempt/raise, rewrite (error) in lisp
|
|
|
|
* more intelligent exception printers in toplevel handler
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
lisp variant ideas
|
|
|
|
|
|
|
|
- get rid of separate predicates and give every value the same structure
|
|
|
|
ala mathematica
|
|
|
|
. (tag 'a) => symbol
|
|
|
|
(tag '(a b)) => a
|
|
|
|
(tag 'symbol 'a) => a
|
|
|
|
(tag 'blah 3) => (blah 3)
|
|
|
|
- have only vectors, not cons cells (sort of like julia)
|
|
|
|
. could have a separate tag field as above
|
|
|
|
|
|
|
|
- easiest way to add vectors:
|
|
|
|
. allocate in same heap with conses, have a tag, size, then elements
|
|
|
|
(each elt must be touched on GC for relocation anyway, so might as well
|
|
|
|
copy collect it)
|
|
|
|
. tag pointers as builtins, we identify them as builtins with big values
|
|
|
|
. write (vector) in C, use it from read and eval
|
|
|
|
|
|
|
|
8889314663 comcast net #
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
cvalues reserves the following global symbols:
|
|
|
|
|
|
|
|
int8, uint8, int16, uint16, int32, uint32, int64, uint64
|
2008-12-20 01:16:00 -05:00
|
|
|
char, uchar, wchar, short, ushort, int, uint, long, ulong
|
2008-06-30 21:54:22 -04:00
|
|
|
float, double
|
|
|
|
struct, array, enum, union, function, void, pointer, lispvalue
|
|
|
|
|
|
|
|
it defines (but doesn't reserve) the following:
|
|
|
|
|
|
|
|
typeof, sizeof, autorelease, guestfunction, ccall
|
|
|
|
|
|
|
|
|
|
|
|
user-defined types and typedefs:
|
|
|
|
|
|
|
|
the rule is that a type should be viewed as a self-evaluating constant
|
|
|
|
like a number. if i define a complex_t type of two doubles, then
|
|
|
|
'complex_t is not a type any more than the symbol 'x could be added to
|
|
|
|
something just because it happened to have the value 2.
|
|
|
|
|
|
|
|
; typedefs from lisp
|
|
|
|
(define wchar_t 'uint32)
|
|
|
|
(define complex_t '(struct ((re double) (im double))))
|
|
|
|
|
|
|
|
; use them
|
|
|
|
(new complex_t)
|
|
|
|
(new `(array ,complex_t 10))
|
|
|
|
(array complex_t 10)
|
|
|
|
|
|
|
|
BUT
|
|
|
|
|
|
|
|
(array 'int32 10)
|
|
|
|
|
|
|
|
because the primitive types *are* symbols. the fact that they have values is
|
|
|
|
just a convenient coincidence that lets you do e.g. (int32 0)
|
|
|
|
|
|
|
|
|
|
|
|
; size-annotate a pointer
|
|
|
|
(setq p (ccall #c-function((pointer void) (ulong) malloc) n)
|
|
|
|
(setq a (deref p `(array int8 ,n)))
|
|
|
|
|
|
|
|
cvalues todo:
|
|
|
|
|
2008-08-30 18:18:20 -04:00
|
|
|
* use uint32_t instead of wchar_t in C code
|
2008-06-30 21:54:22 -04:00
|
|
|
- make sure empty arrays and 0-byte types really work
|
|
|
|
* allow int constructors to accept other int cvalues
|
|
|
|
* array constructor should accept any cvalue of the right size
|
|
|
|
* make sure cvalues participate well in circular printing
|
|
|
|
* float, double
|
2008-08-02 12:18:39 -04:00
|
|
|
- struct, union (may want to start with more general layout type)
|
2008-06-30 21:54:22 -04:00
|
|
|
- pointer type, function type
|
2009-02-01 00:41:43 -05:00
|
|
|
* finalizers
|
2008-06-30 21:54:22 -04:00
|
|
|
- functions autorelease, guestfunction
|
|
|
|
- cref/cset/byteref/byteset
|
|
|
|
* wchar type, wide character strings as (array wchar)
|
|
|
|
* printing and reading strings
|
|
|
|
- ccall
|
|
|
|
- anonymous unions
|
|
|
|
* fix princ for cvalues
|
2009-02-01 00:41:43 -05:00
|
|
|
* make header size for primitives <= 8 bytes, even on 64-bit arch
|
2008-08-28 23:27:59 -04:00
|
|
|
- more efficient read for #array(), so it doesn't need to build a pairlist
|
2009-02-01 00:41:43 -05:00
|
|
|
? lispvalue type
|
|
|
|
. keep track of whether a cvalue leads to any lispvalues, so they can
|
|
|
|
be automatically relocated (?)
|
2008-06-30 21:54:22 -04:00
|
|
|
|
2009-02-01 00:41:43 -05:00
|
|
|
* string constructor/concatenator:
|
2008-06-30 21:54:22 -04:00
|
|
|
(string 'sym #char(65) #wchar(945) "blah" 23)
|
|
|
|
; gives "symA\u03B1blah23"
|
|
|
|
"ccc" reads to (array char)
|
|
|
|
|
|
|
|
low-level functions:
|
|
|
|
; these are type/bounds-checked accesses
|
2008-08-07 01:08:10 -04:00
|
|
|
- (cref cvalue key) ; key is field name or index. access by reference.
|
|
|
|
- (aref cvalue key) ; access by value, returns fixnums where possible
|
|
|
|
- (cset cvalue key value) ; key is field name, index, or struct offset
|
|
|
|
. write&use conv_from_long to put fixnums into typed locations
|
|
|
|
. aset is the same
|
2009-02-23 23:12:33 -05:00
|
|
|
* (copy cv)
|
2008-08-07 01:08:10 -04:00
|
|
|
- (offset type|cvalue field [field ...])
|
|
|
|
- (eltype type field [field ...])
|
|
|
|
- (memcpy dest-cv src-cv)
|
|
|
|
- (memcpy dest doffs src soffs nbytes)
|
2008-06-30 21:54:22 -04:00
|
|
|
- (c2lisp cvalue) ; convert to sexpr form
|
|
|
|
* (typeof cvalue)
|
|
|
|
* (sizeof cvalue|type)
|
2008-08-07 01:08:10 -04:00
|
|
|
- (autorelease cvalue) ; mark cvalue as free-on-gc
|
|
|
|
- (deref pointer[, type]) ; convert an arbitrary pointer to a cvalue
|
|
|
|
; this is the unsafe operation
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
; (sizeof '(pointer type)) == sizeof(void*)
|
|
|
|
; (sizeof '(array type N)) == N * sizeof(type)
|
|
|
|
|
2008-08-07 01:08:10 -04:00
|
|
|
(define (reinterpret-cast cv type)
|
|
|
|
(if (= (sizeof cv) (sizeof type))
|
|
|
|
(deref (pointer 'void cv) type)
|
|
|
|
(error "Invalid cast")))
|
|
|
|
|
|
|
|
a[n].x looks like (cref (cref a n) 'x), (reduce cref head subs)
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
things you can do with cvalues:
|
|
|
|
|
|
|
|
. call native C functions from lisp code without wrappers
|
|
|
|
. wrap C functions in pure lisp, automatically inheriting some degree
|
|
|
|
of type safety
|
|
|
|
. use lisp functions as callbacks from C code
|
|
|
|
. use the lisp garbage collector to reclaim malloc'd storage
|
|
|
|
. annotate C pointers with size information for bounds checking
|
|
|
|
. attach symbolic type information to a C data structure, allowing it to
|
|
|
|
inherit lisp services such as printing a readable representation
|
|
|
|
. add datatypes like strings to lisp
|
|
|
|
. use more efficient represenations for your lisp programs' data
|
|
|
|
|
|
|
|
|
|
|
|
family of cvalue representations.
|
|
|
|
relevant attributes:
|
|
|
|
. large -- needs full size_t to represent size
|
|
|
|
. inline -- allocated along with metadata
|
|
|
|
. prim -- no stored type; uses primtype bits in flags
|
|
|
|
. hasdeps -- depends on other values to stay alive
|
|
|
|
|
|
|
|
these attributes have the following dependencies:
|
|
|
|
. large -> !inline
|
|
|
|
. prim -> !hasdeps && !large
|
|
|
|
|
|
|
|
so we have the following possibilities:
|
|
|
|
|
|
|
|
large inline prim hasdeps rep#
|
|
|
|
0 0 0 0 0
|
|
|
|
0 0 0 1 1
|
|
|
|
|
|
|
|
0 0 1 0 2
|
|
|
|
0 1 0 0 3
|
|
|
|
0 1 0 1 4
|
|
|
|
0 1 1 0 5
|
|
|
|
|
|
|
|
1 0 0 0 6
|
|
|
|
1 0 0 1 7
|
|
|
|
|
|
|
|
we need to be able to un-inline data, so we need:
|
|
|
|
change 3 -> 0 (easy; write pointer over data)
|
|
|
|
change 4 -> 1
|
|
|
|
change 5 -> 2 (also easy)
|
|
|
|
|
|
|
|
|
|
|
|
rep#0&1: (!large && !inline && !prim)
|
|
|
|
typedef struct {
|
|
|
|
cvflags_t flags;
|
|
|
|
value_t type;
|
|
|
|
value_t deps;
|
|
|
|
void *data; /* points to malloc'd buffer */
|
|
|
|
} cvalue_t;
|
|
|
|
|
|
|
|
rep#3&4: (!large && inline && !prim)
|
|
|
|
typedef struct {
|
|
|
|
cvflags_t flags;
|
|
|
|
value_t type;
|
|
|
|
value_t deps;
|
|
|
|
/* data goes here inlined */
|
|
|
|
} cvalue_t;
|
|
|
|
|
|
|
|
|
|
|
|
rep#2: (prim && !inline)
|
|
|
|
typedef struct {
|
|
|
|
cvflags_t flags;
|
|
|
|
void *data; /* points to (tiny!) malloc'd buffer */
|
|
|
|
} cvalue_t;
|
|
|
|
|
|
|
|
rep#5: (prim && inline)
|
|
|
|
typedef struct {
|
|
|
|
cvflags_t flags;
|
|
|
|
/* data goes here inlined */
|
|
|
|
} cvalue_t;
|
|
|
|
|
|
|
|
|
|
|
|
rep#6&7: (large)
|
|
|
|
typedef struct {
|
|
|
|
cvflags_t flags;
|
|
|
|
value_t type;
|
|
|
|
value_t deps;
|
|
|
|
void *data; /* points to malloc'd buffer */
|
|
|
|
size_t len;
|
|
|
|
} cvalue_t;
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
times for lispv:
|
|
|
|
|
|
|
|
color 2.286s
|
|
|
|
sort 0.181s
|
|
|
|
fib34 5.205s
|
|
|
|
mexpa 0.329s
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
finalization algorithm that allows finalizers written in lisp:
|
|
|
|
|
|
|
|
right after GC, go through finalization list (a weak list) and find objects
|
|
|
|
that didn't move. relocate them (bring them back to life) and push them
|
|
|
|
all onto the stack. remove all from finalization list.
|
|
|
|
|
|
|
|
call finalizer for each value.
|
|
|
|
|
|
|
|
optional: after calling a finalizer, make sure the object didn't get put
|
|
|
|
back on the finalization list, remove if it did.
|
|
|
|
if you don't do this, you can make an unkillable object by registering a
|
|
|
|
finalizer that re-registers itself. this could be considered a feature though.
|
|
|
|
|
|
|
|
pop dead values off stack.
|
|
|
|
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
femtolisp semantics
|
|
|
|
|
|
|
|
eval* is an internal procedure of 2 arguments, expr and env, invoked
|
|
|
|
implicitly on input.
|
|
|
|
The user-visible procedure eval performs eval* e Env ()
|
|
|
|
|
|
|
|
eval* Symbol s E => lookup* s E
|
|
|
|
eval* Atom a E => a
|
|
|
|
... special forms ... quote arg, if a b c, other symbols from syntax env.
|
|
|
|
eval* Cons f args E =>
|
|
|
|
|
|
|
|
First the head expression, f, is evaluated, yielding f-.
|
|
|
|
Then control is passed to #.apply f- args
|
|
|
|
#.apply is the user-visible apply procedure.
|
|
|
|
(here we imagine there is a user-invisible environment where f- is
|
|
|
|
bound to the value of the car and args is bound to the cdr of the input)
|
|
|
|
|
|
|
|
|
|
|
|
Now (apply b lst) where b is a procedure (i.e. satisfies functionp) is
|
|
|
|
identical to
|
|
|
|
(eval (map (lambda (e) `',e) (cons b lst)))
|
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
design of new toplevel
|
|
|
|
|
2008-09-10 22:37:38 -04:00
|
|
|
system.lsp contains definitions of (load) and (toplevel) and is loaded
|
|
|
|
from *install-dir* by a bootstrap loader in C. at the end of system.lsp,
|
|
|
|
we check whether (load) is builtin. if it is, we redefine it and reload
|
|
|
|
system.lsp with the new loader. the C code then invokes (toplevel).
|
2008-06-30 21:54:22 -04:00
|
|
|
|
2008-09-10 22:37:38 -04:00
|
|
|
(toplevel) either runs a script or a repl using (while T (trycatch ...))
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
(load) reads and evaluates every form, keeping track of defined functions
|
|
|
|
and macros (at the top level), and grabs a (main ...) form if it sees
|
|
|
|
one. it applies optimizations to every definition, then invokes main.
|
|
|
|
|
|
|
|
an error E during load should rethrow `(load-error ,filename ,E)
|
|
|
|
such exceptions can be printed recursively
|
|
|
|
|
|
|
|
lerror() should make a lisp string S from the result of sprintf, then
|
|
|
|
raise `(,e ,S). first argument e should be a symbol.
|
|
|
|
|
2009-02-27 20:59:01 -05:00
|
|
|
|
|
|
|
new expansion process:
|
|
|
|
|
|
|
|
get rid of macroexpanding versions of define and define-macro
|
|
|
|
macroexpand doesn't expand (define ...)
|
|
|
|
macroexpand implements let-syntax
|
|
|
|
add lambda-expand which applies f-body to the bodies of lambdas, then
|
|
|
|
converts defines to set!
|
|
|
|
call expand on every form before evaluating
|
|
|
|
(define (expand x) (lambda-expand (macroexpand x)))
|
|
|
|
(define (eval x) (%eval (expand x)))
|
|
|
|
reload system.lsp with the new eval
|
|
|
|
|
2008-06-30 21:54:22 -04:00
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
String API
|
|
|
|
|
|
|
|
*string - append/construct
|
2008-08-05 00:34:14 -04:00
|
|
|
*string.inc - (string.inc s i [nchars])
|
|
|
|
*string.dec
|
2009-02-23 23:12:33 -05:00
|
|
|
*string.count - # of chars between 2 byte offsets
|
2008-08-02 12:18:39 -04:00
|
|
|
*string.char - char at byte offset
|
2008-07-18 00:16:07 -04:00
|
|
|
*string.sub - substring between 2 byte offsets
|
2008-06-30 21:54:22 -04:00
|
|
|
*string.split - (string.split s sep-chars)
|
2009-02-27 20:59:01 -05:00
|
|
|
*string.trim - (string.trim s chars-at-start chars-at-end)
|
2008-06-30 21:54:22 -04:00
|
|
|
*string.reverse
|
2008-12-23 23:43:36 -05:00
|
|
|
*string.find - (string.find s str|char [offs]), or nil if not found
|
|
|
|
string.rfind
|
2008-06-30 21:54:22 -04:00
|
|
|
*string.encode - to utf8
|
|
|
|
*string.decode - from utf8 to UCS
|
2009-02-27 20:59:01 -05:00
|
|
|
string.width - # columns
|
2009-03-04 22:48:17 -05:00
|
|
|
*string.map - (string.map f s)
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
|
|
|
|
IOStream API
|
|
|
|
|
2009-02-09 00:38:40 -05:00
|
|
|
*read - (read[ stream]) ; get next sexpr from stream
|
|
|
|
*print
|
|
|
|
*princ
|
2009-02-18 22:31:40 -05:00
|
|
|
*file
|
2008-08-28 23:27:59 -04:00
|
|
|
iostream - (stream[ cvalue-as-bytestream])
|
2009-03-11 22:47:34 -04:00
|
|
|
*buffer
|
2009-02-18 22:31:40 -05:00
|
|
|
fifo
|
|
|
|
socket
|
2009-03-11 22:47:34 -04:00
|
|
|
*io.eof?
|
2009-02-18 22:31:40 -05:00
|
|
|
*io.flush
|
|
|
|
*io.close
|
|
|
|
*io.discardbuffer
|
2009-03-01 23:26:16 -05:00
|
|
|
*io.write - (io.write s cvalue)
|
|
|
|
*io.read - (io.read s ctype [len])
|
2009-03-04 22:48:17 -05:00
|
|
|
*io.getc - get utf8 character
|
|
|
|
*io.putc
|
2009-03-02 22:16:30 -05:00
|
|
|
*io.readline
|
|
|
|
*io.readuntil
|
2009-02-08 22:22:31 -05:00
|
|
|
io.copy - (io.copy to from [nbytes])
|
|
|
|
io.copyuntil - (io.copy to from byte)
|
2009-02-18 22:31:40 -05:00
|
|
|
io.pos - (io.pos s [set-pos])
|
|
|
|
io.seek - (io.seek s offset)
|
2009-02-08 22:22:31 -05:00
|
|
|
io.seekend - move to end of stream
|
|
|
|
io.trunc
|
2009-03-01 23:26:16 -05:00
|
|
|
io.read! - destructively take data
|
2009-03-04 22:48:17 -05:00
|
|
|
*io.tostring!
|
2009-02-08 22:22:31 -05:00
|
|
|
io.readlines
|
|
|
|
io.readall
|
2008-08-28 23:27:59 -04:00
|
|
|
print-to-string
|
|
|
|
princ-to-string
|
2008-06-30 21:54:22 -04:00
|
|
|
|
|
|
|
|
|
|
|
path.combine
|
|
|
|
path.parts
|
|
|
|
path.absolute
|
|
|
|
path.simplify
|
|
|
|
path.tempdir
|
|
|
|
path.tempname
|
|
|
|
path.homedir
|
|
|
|
*path.cwd
|
|
|
|
|
|
|
|
|
|
|
|
*time.now
|
|
|
|
time.parts
|
|
|
|
time.fromparts
|
|
|
|
*time.string
|
|
|
|
time.fromstring
|
|
|
|
|
|
|
|
|
|
|
|
*os.name
|
|
|
|
*os.getenv
|
|
|
|
*os.setenv
|
|
|
|
os.execv
|
|
|
|
|
|
|
|
|
|
|
|
*rand
|
2008-08-28 23:27:59 -04:00
|
|
|
*randn
|
2008-06-30 21:54:22 -04:00
|
|
|
*rand.uint32
|
|
|
|
*rand.uint64
|
|
|
|
*rand.double
|
2008-08-28 23:27:59 -04:00
|
|
|
*rand.float
|
2008-06-30 21:54:22 -04:00
|
|
|
|
2008-07-26 18:04:02 -04:00
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
* new print algorithm
|
|
|
|
1. traverse & tag all conses to be printed. when you encounter a cons
|
|
|
|
that is already tagged, add it to a table to give it a #n# index
|
|
|
|
2. untag a cons when printing it. if cons is in the table, print
|
|
|
|
"#n=" before it in the car, " . #n=" in the cdr. if cons is in the
|
|
|
|
table but already untagged, print #n# in car or " . #n#" in the cdr.
|
|
|
|
* read macros for #n# and #n= using the same kind of table
|
|
|
|
* also need a table of read labels to translate from input indexes to
|
|
|
|
normalized indexes (0 for first label, 1 for next, etc.)
|
|
|
|
* read macro #. for eval-when-read. use for printing builtins, e.g. "#.eq"
|
|
|
|
|
2008-06-30 21:54:22 -04:00
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
prettyprint notes
|
|
|
|
|
|
|
|
* if head of list causes VPOS to increase and HPOS is a bit large, then
|
|
|
|
switch to miser mode, otherwise default is ok, for example:
|
|
|
|
|
|
|
|
> '((lambda (x y) (if (< x y) x y)) (a b c) (d e f) 2 3 (r t y))
|
|
|
|
((lambda (x y)
|
|
|
|
(if (< x y) x y)) (a b c)
|
|
|
|
(d e f) 2 3
|
|
|
|
(r t y))
|
|
|
|
|
|
|
|
* (if a b c) should always put newlines before b and c
|
|
|
|
|
|
|
|
* write try_predict_len that gives a length for easy cases like
|
|
|
|
symbols, else -1. use it to avoid wrapping symbols around lines
|
2008-08-02 12:18:39 -04:00
|
|
|
|
2008-08-04 21:43:12 -04:00
|
|
|
* print defun, defmacro, label, for more like lambda (2 spaces)
|
2008-08-02 12:18:39 -04:00
|
|
|
|
2008-08-04 21:43:12 -04:00
|
|
|
* *print-pretty* to control it
|
2008-08-02 12:18:39 -04:00
|
|
|
|
|
|
|
- if indent gets too large, dedent back to left edge
|
2008-08-28 23:27:59 -04:00
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
2008-08-30 18:18:20 -04:00
|
|
|
|
|
|
|
consolidated todo list as of 8/30:
|
2008-12-20 01:16:00 -05:00
|
|
|
* new cvalues, types representation
|
2009-01-02 18:00:21 -05:00
|
|
|
* use the unused tag for TAG_PRIM, add smaller prim representation
|
2008-12-20 01:16:00 -05:00
|
|
|
* finalizers in gc
|
2008-12-22 01:36:50 -05:00
|
|
|
* hashtable
|
2008-12-27 01:02:53 -05:00
|
|
|
* generic aref/aset
|
2009-03-11 22:47:34 -04:00
|
|
|
* expose io stream object
|
2009-02-20 00:11:05 -05:00
|
|
|
* new toplevel
|
|
|
|
|
|
|
|
* make raising a memory error non-consing
|
|
|
|
- eliminate string copy in lerror() when possible
|
2009-02-23 21:21:16 -05:00
|
|
|
* fix printing lists of short strings
|
2008-11-23 02:12:37 -05:00
|
|
|
|
2008-08-30 18:18:20 -04:00
|
|
|
- remaining c types
|
|
|
|
- remaining cvalues functions
|
|
|
|
- finish ios
|
2009-03-24 22:28:21 -04:00
|
|
|
|
2008-11-23 02:12:37 -05:00
|
|
|
- special efficient reader for #array
|
2008-12-10 23:04:17 -05:00
|
|
|
- reimplement vectors as (array lispvalue)
|
|
|
|
- implement fast subvectors and subarrays
|
2008-11-05 23:04:04 -05:00
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
cvalues redesign
|
|
|
|
|
|
|
|
goals:
|
|
|
|
. allow custom types with vtables
|
|
|
|
. use less space, share types more
|
|
|
|
. simplify access to important metadata like length
|
|
|
|
. unify vectors and arrays
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
fltype_t *type;
|
|
|
|
void *data;
|
|
|
|
size_t len; // length of *data in bytes
|
2008-11-23 02:12:37 -05:00
|
|
|
union {
|
|
|
|
value_t parent; // optional
|
|
|
|
char _space[1]; // variable size
|
|
|
|
};
|
2008-11-05 23:04:04 -05:00
|
|
|
} cvalue_t;
|
|
|
|
|
2008-11-23 02:12:37 -05:00
|
|
|
#define owned(cv) ((cv)->type & 0x1)
|
|
|
|
#define hasparent(cv) ((cv)->type & 0x2)
|
|
|
|
#define isinlined(cv) ((cv)->data == &(cv)->_space[0])
|
|
|
|
#define cv_class(cv) ((fltype_t*)(((uptrint_t)(cv)->type)&~3))
|
|
|
|
#define cv_type(cv) (cv_class(cv)->type)
|
|
|
|
#define cv_len(cv) ((cv)->len)
|
|
|
|
#define cv_data(cv) ((cv)->data)
|
|
|
|
#define cv_numtype(cv) (cv_class(cv)->numtype)
|
2008-11-05 23:04:04 -05:00
|
|
|
|
|
|
|
typedef struct _fltype_t {
|
|
|
|
value_t type;
|
|
|
|
int numtype;
|
|
|
|
size_t sz;
|
2008-11-28 16:44:59 -05:00
|
|
|
size_t elsz;
|
2008-11-05 23:04:04 -05:00
|
|
|
cvtable_t *vtable;
|
|
|
|
struct _fltype_t *eltype; // for arrays
|
2008-11-23 02:12:37 -05:00
|
|
|
struct _fltype_t *artype; // (array this)
|
2008-11-28 16:44:59 -05:00
|
|
|
int marked;
|
2008-11-05 23:04:04 -05:00
|
|
|
} fltype_t;
|
2009-04-14 20:12:01 -04:00
|
|
|
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
new evaluator todo:
|
|
|
|
|
2009-04-15 23:05:38 -04:00
|
|
|
* need builtin = to handle nans properly, fix equal? on nans
|
2009-04-19 18:22:17 -04:00
|
|
|
* builtin quasi-opaque function type
|
2009-04-14 20:12:01 -04:00
|
|
|
fields: signature, maxstack, bcode, vals, cloenv
|
|
|
|
function->vector
|
2009-04-15 23:05:38 -04:00
|
|
|
* make (for ...) a special form
|
|
|
|
* trycatch should require 2nd arg to be a lambda expression
|
|
|
|
* immediate load int8 instruction
|
2009-04-28 00:10:18 -04:00
|
|
|
- fix equal? on functions
|
2009-05-05 00:01:06 -04:00
|
|
|
- store function name and signature
|
2009-04-14 20:12:01 -04:00
|
|
|
- maxstack calculation, replace Stack with C stack, alloca
|
|
|
|
- stack traces and better debugging support
|
|
|
|
- lambda lifting
|
2009-04-22 20:22:03 -04:00
|
|
|
* let optimization
|
2009-05-05 00:01:06 -04:00
|
|
|
- let eversion
|
2009-04-22 20:22:03 -04:00
|
|
|
* have macroexpand use its own global syntax table
|
|
|
|
* be able to create/load an image file
|
2009-04-26 18:19:32 -04:00
|
|
|
- fix trace and untrace
|
|
|
|
- opcodes NEG, ADD2, (CADR ?), sub-immediate, add-immediate
|
|
|
|
- EQTO N, compare directly to stored datum N
|
|
|
|
- peephole opt
|
|
|
|
constant+pop => nothing, e.g. 2-arg 'if' in statement position
|
|
|
|
not+brf => brt
|
|
|
|
not+brt => brf
|
|
|
|
loadt+brf => nothing
|
|
|
|
loadf+brt => nothing
|
|
|
|
loadt+brt => jmp
|
|
|
|
loadf+brf => jmp
|