7f9d1d6ab9
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.
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include "py/nlr.h"
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#include "py/compile.h"
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#include "py/runtime.h"
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#include "py/repl.h"
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#include "py/gc.h"
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#include "pyexec.h"
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void do_str(const char *src) {
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
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if (lex == NULL) {
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printf("MemoryError: lexer could not allocate memory\n");
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return;
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}
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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qstr source_name = lex->source_name;
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mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT);
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mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, true);
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mp_call_function_0(module_fun);
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nlr_pop();
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} else {
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// uncaught exception
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mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
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}
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}
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static char *stack_top;
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static char heap[2048];
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int main(int argc, char **argv) {
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int stack_dummy;
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stack_top = (char*)&stack_dummy;
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#if MICROPY_ENABLE_GC
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gc_init(heap, heap + sizeof(heap));
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#endif
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mp_init();
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#if MICROPY_REPL_EVENT_DRIVEN
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pyexec_friendly_repl_init();
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for (;;) {
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int c = stdin_rx_chr();
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if (pyexec_friendly_repl_process_char(c)) {
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break;
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}
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}
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#else
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pyexec_friendly_repl();
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#endif
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//do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\\n')");
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mp_deinit();
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return 0;
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}
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void gc_collect(void) {
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// WARNING: This gc_collect implementation doesn't try to get root
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// pointers from CPU registers, and thus may function incorrectly.
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void *dummy;
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gc_collect_start();
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gc_collect_root(&dummy, ((mp_uint_t)stack_top - (mp_uint_t)&dummy) / sizeof(mp_uint_t));
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gc_collect_end();
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gc_dump_info();
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}
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mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
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return NULL;
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}
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mp_import_stat_t mp_import_stat(const char *path) {
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return MP_IMPORT_STAT_NO_EXIST;
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}
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mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
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void nlr_jump_fail(void *val) {
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}
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void NORETURN __fatal_error(const char *msg) {
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while (1);
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}
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#ifndef NDEBUG
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void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
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printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
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__fatal_error("Assertion failed");
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}
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#endif
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#if !MICROPY_MIN_USE_STDOUT
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void _start(void) {main(0, NULL);}
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#endif
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