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Code Issues 1 Releases Wiki Activity

Remove file/fileno and file/fdopen.

Browse Source 
Also fully add call function pointer to
abstract types, including in methods, etc.
This commit is contained in:
Calvin Rose 2020-01-23 09:01:33 -06:00
parent 4fad0714e7
commit b8d530da36
3 changed files with 59 additions and 115 deletions
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2
src/core/inttypes.c
View File

@ -256,7 +256,7 @@ static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
#define DIVMETHODINVERT_SIGNED(T, type, name, oper) \
static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
janet_arity(argc, 2, -1); \
janet_fixarity(argc, 2); \
T *box = janet_abstract(&it_##type##_type, sizeof(T)); \
*box = janet_unwrap_##type(argv[1]); \
T value = janet_unwrap_##type(argv[0]); \

51
src/core/io.c
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@ -157,36 +157,6 @@ static Janet cfun_io_fopen(int32_t argc, Janet *argv) {
return f ? makef(f, flags) : janet_wrap_nil();
}
static Janet cfun_io_fdopen(int32_t argc, Janet *argv) {
janet_arity(argc, 1, 2);
const int fd = janet_getinteger(argv, 0);
const uint8_t *fmode;
int flags;
if (argc == 2) {
fmode = janet_getkeyword(argv, 1);
flags = checkflags(fmode);
} else {
fmode = (const uint8_t *)"r";
flags = JANET_FILE_READ;
}
#ifdef JANET_WINDOWS
#define fdopen _fdopen
#endif
FILE *f = fdopen(fd, (const char *)fmode);
return f ? makef(f, flags) : janet_wrap_nil();
}
static Janet cfun_io_fileno(int32_t argc, Janet *argv) {
janet_fixarity(argc, 1);
IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
if (iof->flags & JANET_FILE_CLOSED)
janet_panic("file is closed");
#ifdef JANET_WINDOWS
#define fileno _fileno
#endif
return janet_wrap_integer(fileno(iof->file));
}
/* Read up to n bytes into buffer. */
static void read_chunk(IOFile *iof, JanetBuffer *buffer, int32_t nBytesMax) {
if (!(iof->flags & (JANET_FILE_READ | JANET_FILE_UPDATE)))
@ -338,7 +308,6 @@ static Janet cfun_io_fseek(int32_t argc, Janet *argv) {
static JanetMethod io_file_methods[] = {
{"close", cfun_io_fclose},
{"fileno", cfun_io_fileno},
{"flush", cfun_io_fflush},
{"read", cfun_io_fread},
{"seek", cfun_io_fseek},
@ -592,26 +561,6 @@ static const JanetReg io_cfuns[] = {
"\tb - open the file in binary mode (rather than text mode)\n"
"\t+ - append to the file instead of overwriting it")
},
{
"file/fdopen", cfun_io_fdopen,
JDOC("(file/fdopen fd &opt mode)\n\n"
"Create a file from an fd. fd is a platform specific file descriptor, and "
"mode is a set of flags indicating the mode to open the file in. "
"mode is a keyword where each character represents a flag. If the file "
"cannot be opened, returns nil, otherwise returns the new file handle. "
"Mode flags:\n\n"
"\tr - allow reading from the file\n"
"\tw - allow writing to the file\n"
"\ta - append to the file\n"
"\tb - open the file in binary mode (rather than text mode)\n"
"\t+ - append to the file instead of overwriting it")
},
{
"file/fileno", cfun_io_fileno,
JDOC("(file/fileno f)\n\n"
"Return the underlying file descriptor for the file as a number."
"The meaning of this number is platform specific.")
},
{
"file/close", cfun_io_fclose,
JDOC("(file/close f)\n\n"

113
src/core/vm.c
View File

@ -195,49 +195,64 @@ JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
}
/* Trace a function call */
static void vm_do_trace(JanetFunction *func) {
Janet *stack = janet_vm_fiber->data + janet_vm_fiber->stackstart;
int32_t start = janet_vm_fiber->stackstart;
int32_t end = janet_vm_fiber->stacktop;
int32_t argc = end - start;
static void vm_do_trace(JanetFunction *func, int32_t argc, const Janet *argv) {
if (func->def->name){
janet_printf("trace (%S", func->def->name);
} else {
janet_printf("trace (%p", janet_wrap_function(func));
}
for (int32_t i = 0; i < argc; i++) {
janet_printf(" %p", stack[i]);
janet_printf(" %p", argv[i]);
}
printf(")\n");
janet_printf(")\n");
}
/* Call a non function type */
static Janet call_nonfn(JanetFiber *fiber, Janet callee) {
int32_t argn = fiber->stacktop - fiber->stackstart;
Janet ds, key;
JanetType t = janet_type(callee);
if (t == JANET_ABSTRACT) {
JanetAbstract abst = janet_unwrap_abstract(callee);
/* Invoke a method once we have looked it up */
static Janet janet_method_invoke(Janet method, int32_t argc, Janet *argv) {
switch (janet_type(method)) {
case JANET_CFUNCTION:
return (janet_unwrap_cfunction(method))(argc, argv);
case JANET_FUNCTION: {
JanetFunction *fun = janet_unwrap_function(method);
return janet_call(fun, argc, argv);
}
case JANET_ABSTRACT: {
JanetAbstract abst = janet_unwrap_abstract(method);
const JanetAbstractType *at = janet_abstract_type(abst);
if (NULL != at->call) {
fiber->stacktop = fiber->stackstart;
return at->call(abst, argn, fiber->data + fiber->stackstart);
return at->call(abst, argc, argv);
}
}
if (argn != 1) janet_panicf("%v called with %d arguments, possibly expected 1", callee, argn);
if ((1 << t) & (JANET_TFLAG_INDEXED | JANET_TFLAG_DICTIONARY |
JANET_TFLAG_STRING | JANET_TFLAG_BUFFER | JANET_TFLAG_ABSTRACT)) {
ds = callee;
key = fiber->data[fiber->stackstart];
} else {
ds = fiber->data[fiber->stackstart];
key = callee;
/* fallthrough */
case JANET_STRING:
case JANET_BUFFER:
case JANET_TABLE:
case JANET_STRUCT:
case JANET_ARRAY:
case JANET_TUPLE: {
if (argc != 1) {
janet_panicf("%v called with %d arguments, possibly expected 1", method, argc);
}
return janet_in(method, argv[0]);
}
default: {
if (argc != 1) {
janet_panicf("%v called with %d arguments, possibly expected 1", method, argc);
}
return janet_in(argv[0], method);
}
}
fiber->stacktop = fiber->stackstart;
return janet_in(ds, key);
}
/* Get a callable from a keyword method name and check ensure that it is valid. */
/* Call a non function type from a JOP_CALL or JOP_TAILCALL instruction.
* Assumes that the arguments are on the fiber stack. */
static Janet call_nonfn(JanetFiber *fiber, Janet callee) {
int32_t argc = fiber->stacktop - fiber->stackstart;
fiber->stacktop = fiber->stackstart;
return janet_method_invoke(callee, argc, fiber->data + fiber->stacktop);
}
/* Get a callable from a keyword method name and ensure that it is valid. */
static Janet resolve_method(Janet name, JanetFiber *fiber) {
int32_t argc = fiber->stacktop - fiber->stackstart;
if (argc < 1) janet_panicf("method call (%v) takes at least 1 argument, got 0", name);
@ -250,36 +265,7 @@ static Janet resolve_method(Janet name, JanetFiber *fiber) {
/* Lookup method on value x */
static Janet janet_method_lookup(Janet x, const char *name) {
Janet kname = janet_ckeywordv(name);
switch (janet_type(x)) {
default:
return janet_wrap_nil();
case JANET_ABSTRACT: {
Janet method;
void *abst = janet_unwrap_abstract(x);
JanetAbstractType *type = (JanetAbstractType *)janet_abstract_type(abst);
if (!type->get || !(type->get)(abst, kname, &method)) {
return janet_wrap_nil();
} else {
return method;
}
}
case JANET_TABLE:
return janet_table_get(janet_unwrap_table(x), kname);
case JANET_STRUCT:
return janet_struct_get(janet_unwrap_struct(x), kname);
}
}
/* Invoke a method once we have looked it up */
static Janet janet_method_invoke(Janet method, int32_t argc, Janet *argv) {
if (janet_checktype(method, JANET_CFUNCTION)) {
return (janet_unwrap_cfunction(method))(argc, argv);
} else if (janet_checktype(method, JANET_FUNCTION)) {
JanetFunction *fun = janet_unwrap_function(method);
return janet_call(fun, argc, argv);
} else {
janet_panicf("method is not callable: %v", method);
}
return janet_get(x, kname);
}
/* Call a method first on the righthand side, and then on the left hand side with a prefix */
@ -901,7 +887,9 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
}
if (janet_checktype(callee, JANET_FUNCTION)) {
func = janet_unwrap_function(callee);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) vm_do_trace(func);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) {
vm_do_trace(func, fiber->stacktop - fiber->stackstart, stack);
}
janet_stack_frame(stack)->pc = pc;
if (janet_fiber_funcframe(fiber, func)) {
int32_t n = fiber->stacktop - fiber->stackstart;
@ -938,7 +926,9 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
}
if (janet_checktype(callee, JANET_FUNCTION)) {
func = janet_unwrap_function(callee);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) vm_do_trace(func);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) {
vm_do_trace(func, fiber->stacktop - fiber->stackstart, stack);
}
if (janet_fiber_funcframe_tail(fiber, func)) {
janet_stack_frame(fiber->data + fiber->frame)->pc = pc;
int32_t n = fiber->stacktop - fiber->stackstart;
@ -1186,6 +1176,11 @@ Janet janet_call(JanetFunction *fun, int32_t argc, const Janet *argv) {
if (janet_vm_stackn >= JANET_RECURSION_GUARD)
janet_panic("C stack recursed too deeply");
/* Tracing */
if (fun->gc.flags & JANET_FUNCFLAG_TRACE) {
vm_do_trace(fun, argc, argv);
}
/* Push frame */
janet_fiber_pushn(janet_vm_fiber, argv, argc);
if (janet_fiber_funcframe(janet_vm_fiber, fun)) {