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py: Overhaul and simplify printf/pfenv mechanism.

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Previous to this patch the printing mechanism was a bit of a tangled
mess.  This patch attempts to consolidate printing into one interface.

All (non-debug) printing now uses the mp_print* family of functions,
mainly mp_printf.  All these functions take an mp_print_t structure as
their first argument, and this structure defines the printing backend
through the "print_strn" function of said structure.

Printing from the uPy core can reach the platform-defined print code via
two paths: either through mp_sys_stdout_obj (defined pert port) in
conjunction with mp_stream_write; or through the mp_plat_print structure
which uses the MP_PLAT_PRINT_STRN macro to define how string are printed
on the platform.  The former is only used when MICROPY_PY_IO is defined.

With this new scheme printing is generally more efficient (less layers
to go through, less arguments to pass), and, given an mp_print_t*
structure, one can call mp_print_str for efficiency instead of
mp_printf("%s", ...).  Code size is also reduced by around 200 bytes on
Thumb2 archs.
This commit is contained in:
Damien George
2015-04-09 23:56:15 +01:00
parent 56beb01724
commit 7f9d1d6ab9
91 changed files with 671 additions and 716 deletions
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16
py/objtuple.c
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@@ -37,27 +37,27 @@ STATIC mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, mp_uint_t cur);
/******************************************************************************/
/* tuple */
void mp_obj_tuple_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
void mp_obj_tuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
mp_obj_tuple_t *o = o_in;
if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
print(env, "[");
mp_print_str(print, "[");
} else {
print(env, "(");
mp_print_str(print, "(");
kind = PRINT_REPR;
}
for (mp_uint_t i = 0; i < o->len; i++) {
if (i > 0) {
print(env, ", ");
mp_print_str(print, ", ");
}
mp_obj_print_helper(print, env, o->items[i], kind);
mp_obj_print_helper(print, o->items[i], kind);
}
if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
print(env, "]");
mp_print_str(print, "]");
} else {
if (o->len == 1) {
print(env, ",");
mp_print_str(print, ",");
}
print(env, ")");
mp_print_str(print, ")");
}
}