VM: Refactor io.cpp/hpp to Factor style

db4
Erik Charlebois 2013-05-11 22:06:53 -04:00
parent d3d1d3bb7a
commit 894e181f31
2 changed files with 170 additions and 210 deletions

377
vm/io.cpp
View File

@ -1,7 +1,6 @@
#include "master.hpp"
namespace factor
{
namespace factor {
/* Simple wrappers for ANSI C I/O functions, used for bootstrapping.
@ -14,269 +13,231 @@ The Factor library provides platform-specific code for Unix and Windows
with many more capabilities so these words are not usually used in
normal operation. */
void factor_vm::init_c_io()
{
special_objects[OBJ_STDIN] = allot_alien(false_object,(cell)stdin);
special_objects[OBJ_STDOUT] = allot_alien(false_object,(cell)stdout);
special_objects[OBJ_STDERR] = allot_alien(false_object,(cell)stderr);
void factor_vm::init_c_io() {
special_objects[OBJ_STDIN] = allot_alien(false_object, (cell) stdin);
special_objects[OBJ_STDOUT] = allot_alien(false_object, (cell) stdout);
special_objects[OBJ_STDERR] = allot_alien(false_object, (cell) stderr);
}
void factor_vm::io_error()
{
if(errno == EINTR)
return;
void factor_vm::io_error() {
if (errno == EINTR)
return;
general_error(ERROR_IO,tag_fixnum(errno),false_object);
general_error(ERROR_IO, tag_fixnum(errno), false_object);
}
FILE *factor_vm::safe_fopen(char *filename, char *mode)
{
FILE *file;
for(;;)
{
file = fopen(filename,mode);
if(file == NULL)
io_error();
else
break;
}
return file;
FILE* factor_vm::safe_fopen(char* filename, char* mode) {
FILE* file;
for (;;) {
file = fopen(filename, mode);
if (file == NULL)
io_error();
else
break;
}
return file;
}
int factor_vm::safe_fgetc(FILE *stream)
{
int c;
for(;;)
{
c = getc(stream);
if(c == EOF)
{
if(feof(stream))
return EOF;
else
io_error();
}
else
break;
}
return c;
int factor_vm::safe_fgetc(FILE* stream) {
int c;
for (;;) {
c = getc(stream);
if (c == EOF) {
if (feof(stream))
return EOF;
else
io_error();
} else
break;
}
return c;
}
size_t factor_vm::safe_fread(void *ptr, size_t size, size_t nitems, FILE *stream)
{
size_t items_read = 0;
size_t ret = 0;
size_t factor_vm::safe_fread(void* ptr, size_t size, size_t nitems,
FILE* stream) {
size_t items_read = 0;
size_t ret = 0;
do
{
ret = fread((void*)((int*)ptr+items_read*size),size,nitems-items_read,stream);
if(ret == 0)
{
if(feof(stream))
break;
else
io_error();
}
items_read += ret;
} while(items_read != nitems);
do {
ret = fread((void*)((int*)ptr + items_read * size), size,
nitems - items_read, stream);
if (ret == 0) {
if (feof(stream))
break;
else
io_error();
}
items_read += ret;
} while (items_read != nitems);
return items_read;
return items_read;
}
void factor_vm::safe_fputc(int c, FILE *stream)
{
for(;;)
{
if(putc(c,stream) == EOF)
io_error();
else
break;
}
void factor_vm::safe_fputc(int c, FILE* stream) {
for (;;) {
if (putc(c, stream) == EOF)
io_error();
else
break;
}
}
size_t factor_vm::safe_fwrite(void *ptr, size_t size, size_t nitems, FILE *stream)
{
size_t items_written = 0;
size_t ret = 0;
size_t factor_vm::safe_fwrite(void* ptr, size_t size, size_t nitems,
FILE* stream) {
size_t items_written = 0;
size_t ret = 0;
do {
ret = fwrite((void*)((int*)ptr+items_written*size),size,nitems-items_written,stream);
if(ret == 0)
io_error();
items_written += ret;
} while(items_written != nitems);
do {
ret = fwrite((void*)((int*)ptr + items_written * size), size,
nitems - items_written, stream);
if (ret == 0)
io_error();
items_written += ret;
} while (items_written != nitems);
return items_written;
return items_written;
}
int factor_vm::safe_ftell(FILE *stream)
{
off_t offset;
for(;;)
{
if((offset = FTELL(stream)) == -1)
io_error();
else
break;
}
return offset;
int factor_vm::safe_ftell(FILE* stream) {
off_t offset;
for (;;) {
if ((offset = FTELL(stream)) == -1)
io_error();
else
break;
}
return offset;
}
void factor_vm::safe_fseek(FILE *stream, off_t offset, int whence)
{
switch(whence)
{
case 0: whence = SEEK_SET; break;
case 1: whence = SEEK_CUR; break;
case 2: whence = SEEK_END; break;
default:
critical_error("Bad value for whence",whence);
}
void factor_vm::safe_fseek(FILE* stream, off_t offset, int whence) {
switch (whence) {
case 0:
whence = SEEK_SET;
break;
case 1:
whence = SEEK_CUR;
break;
case 2:
whence = SEEK_END;
break;
default:
critical_error("Bad value for whence", whence);
}
for(;;)
{
if(FSEEK(stream,offset,whence) == -1)
io_error();
else
break;
}
for (;;) {
if (FSEEK(stream, offset, whence) == -1)
io_error();
else
break;
}
}
void factor_vm::safe_fflush(FILE *stream)
{
for(;;)
{
if(fflush(stream) == EOF)
io_error();
else
break;
}
void factor_vm::safe_fflush(FILE* stream) {
for (;;) {
if (fflush(stream) == EOF)
io_error();
else
break;
}
}
void factor_vm::safe_fclose(FILE *stream)
{
for(;;)
{
if(fclose(stream) == EOF)
io_error();
else
break;
}
void factor_vm::safe_fclose(FILE* stream) {
for (;;) {
if (fclose(stream) == EOF)
io_error();
else
break;
}
}
void factor_vm::primitive_fopen()
{
data_root<byte_array> mode(ctx->pop(),this);
data_root<byte_array> path(ctx->pop(),this);
mode.untag_check(this);
path.untag_check(this);
void factor_vm::primitive_fopen() {
data_root<byte_array> mode(ctx->pop(), this);
data_root<byte_array> path(ctx->pop(), this);
mode.untag_check(this);
path.untag_check(this);
FILE *file;
file = safe_fopen((char *)(path.untagged() + 1),
(char *)(mode.untagged() + 1));
ctx->push(allot_alien(file));
FILE* file;
file = safe_fopen((char*)(path.untagged() + 1), (char*)(mode.untagged() + 1));
ctx->push(allot_alien(file));
}
FILE *factor_vm::pop_file_handle()
{
return (FILE *)alien_offset(ctx->pop());
}
FILE* factor_vm::pop_file_handle() { return (FILE*)alien_offset(ctx->pop()); }
FILE *factor_vm::peek_file_handle()
{
return (FILE *)alien_offset(ctx->peek());
}
FILE* factor_vm::peek_file_handle() { return (FILE*)alien_offset(ctx->peek()); }
void factor_vm::primitive_fgetc()
{
FILE *file = peek_file_handle();
void factor_vm::primitive_fgetc() {
FILE* file = peek_file_handle();
int c = safe_fgetc(file);
if(c == EOF && feof(file))
{
clearerr(file);
ctx->replace(false_object);
}
else
ctx->replace(tag_fixnum(c));
int c = safe_fgetc(file);
if (c == EOF && feof(file)) {
clearerr(file);
ctx->replace(false_object);
} else
ctx->replace(tag_fixnum(c));
}
/* Allocates memory */
void factor_vm::primitive_fread()
{
FILE *file = pop_file_handle();
void *buf = (void*)alien_offset(ctx->pop());
fixnum size = unbox_array_size();
void factor_vm::primitive_fread() {
FILE* file = pop_file_handle();
void* buf = (void*)alien_offset(ctx->pop());
fixnum size = unbox_array_size();
if(size == 0)
{
ctx->push(from_unsigned_cell(0));
return;
}
if (size == 0) {
ctx->push(from_unsigned_cell(0));
return;
}
size_t c = safe_fread(buf,1,size,file);
if(c == 0 || feof(file))
clearerr(file);
ctx->push(from_unsigned_cell(c));
size_t c = safe_fread(buf, 1, size, file);
if (c == 0 || feof(file))
clearerr(file);
ctx->push(from_unsigned_cell(c));
}
void factor_vm::primitive_fputc()
{
FILE *file = pop_file_handle();
fixnum ch = to_fixnum(ctx->pop());
safe_fputc((int)ch, file);
void factor_vm::primitive_fputc() {
FILE* file = pop_file_handle();
fixnum ch = to_fixnum(ctx->pop());
safe_fputc((int) ch, file);
}
void factor_vm::primitive_fwrite()
{
FILE *file = pop_file_handle();
cell length = to_cell(ctx->pop());
char *text = alien_offset(ctx->pop());
void factor_vm::primitive_fwrite() {
FILE* file = pop_file_handle();
cell length = to_cell(ctx->pop());
char* text = alien_offset(ctx->pop());
if(length == 0)
return;
if (length == 0)
return;
size_t written = safe_fwrite(text,1,length,file);
if(written != length)
io_error();
size_t written = safe_fwrite(text, 1, length, file);
if (written != length)
io_error();
}
void factor_vm::primitive_ftell()
{
FILE *file = peek_file_handle();
ctx->replace(from_signed_8(safe_ftell(file)));
void factor_vm::primitive_ftell() {
FILE* file = peek_file_handle();
ctx->replace(from_signed_8(safe_ftell(file)));
}
void factor_vm::primitive_fseek()
{
FILE *file = pop_file_handle();
int whence = (int)to_fixnum(ctx->pop());
off_t offset = (off_t)to_signed_8(ctx->pop());
safe_fseek(file,offset,whence);
void factor_vm::primitive_fseek() {
FILE* file = pop_file_handle();
int whence = (int) to_fixnum(ctx->pop());
off_t offset = (off_t) to_signed_8(ctx->pop());
safe_fseek(file, offset, whence);
}
void factor_vm::primitive_fflush()
{
FILE *file = pop_file_handle();
safe_fflush(file);
void factor_vm::primitive_fflush() {
FILE* file = pop_file_handle();
safe_fflush(file);
}
void factor_vm::primitive_fclose()
{
FILE *file = pop_file_handle();
safe_fclose(file);
void factor_vm::primitive_fclose() {
FILE* file = pop_file_handle();
safe_fclose(file);
}
/* This function is used by FFI I/O. Accessing the errno global directly is
not portable, since on some libc's errno is not a global but a funky macro that
reads thread-local storage. */
VM_C_API int err_no()
{
return errno;
}
VM_C_API int err_no() { return errno; }
VM_C_API void set_err_no(int err)
{
errno = err;
}
VM_C_API void set_err_no(int err) { errno = err; }
}

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@ -1,5 +1,4 @@
namespace factor
{
namespace factor {
/* Platform specific primitives */