kopia lustrzana https://github.com/micropython/micropython
304 wiersze
10 KiB
C
304 wiersze
10 KiB
C
#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "mpqstr.h"
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#include "obj.h"
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#include "map.h"
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#include "runtime.h"
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#include "bc.h"
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/******************************************************************************/
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/* native functions */
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// mp_obj_fun_native_t defined in obj.h
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// args are in reverse order in the array
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mp_obj_t fun_native_call_n(mp_obj_t self_in, int n_args, const mp_obj_t *args) {
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mp_obj_fun_native_t *self = self_in;
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if (self->n_args_min == self->n_args_max) {
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// function requires a fixed number of arguments
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// check number of arguments
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if (n_args != self->n_args_min) {
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nlr_jump(mp_obj_new_exception_msg_2_args(MP_QSTR_TypeError, "function takes %d positional arguments but %d were given", (const char*)(machine_int_t)self->n_args_min, (const char*)(machine_int_t)n_args));
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}
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// dispatch function call
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switch (self->n_args_min) {
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case 0:
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return ((mp_fun_0_t)self->fun)();
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case 1:
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return ((mp_fun_1_t)self->fun)(args[0]);
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case 2:
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return ((mp_fun_2_t)self->fun)(args[1], args[0]);
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case 3:
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return ((mp_fun_3_t)self->fun)(args[2], args[1], args[0]);
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default:
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assert(0);
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return mp_const_none;
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}
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} else {
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// function takes a variable number of arguments
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if (n_args < self->n_args_min) {
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nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "<fun name>() missing %d required positional arguments: <list of names of params>", (const char*)(machine_int_t)(self->n_args_min - n_args)));
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} else if (n_args > self->n_args_max) {
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nlr_jump(mp_obj_new_exception_msg_2_args(MP_QSTR_TypeError, "<fun name> expected at most %d arguments, got %d", (void*)(machine_int_t)self->n_args_max, (void*)(machine_int_t)n_args));
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}
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// TODO really the args need to be passed in as a Python tuple, as the form f(*[1,2]) can be used to pass var args
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mp_obj_t *args_ordered = m_new(mp_obj_t, n_args);
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for (int i = 0; i < n_args; i++) {
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args_ordered[i] = args[n_args - i - 1];
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}
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mp_obj_t res = ((mp_fun_var_t)self->fun)(n_args, args_ordered);
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m_del(mp_obj_t, args_ordered, n_args);
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return res;
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}
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}
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const mp_obj_type_t fun_native_type = {
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{ &mp_const_type },
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"function",
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NULL, // print
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NULL, // make_new
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fun_native_call_n, // call_n
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NULL, // unary_op
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NULL, // binary_op
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NULL, // getiter
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NULL, // iternext
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.methods = NULL,
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};
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mp_obj_t rt_make_function_0(mp_fun_0_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = 0;
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o->n_args_max = 0;
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o->fun = fun;
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return o;
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}
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mp_obj_t rt_make_function_1(mp_fun_1_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = 1;
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o->n_args_max = 1;
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o->fun = fun;
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return o;
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}
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mp_obj_t rt_make_function_2(mp_fun_2_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = 2;
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o->n_args_max = 2;
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o->fun = fun;
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return o;
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}
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mp_obj_t rt_make_function_3(mp_fun_3_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = 3;
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o->n_args_max = 3;
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o->fun = fun;
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return o;
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}
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mp_obj_t rt_make_function_var(int n_args_min, mp_fun_var_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = n_args_min;
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o->n_args_max = ~((machine_uint_t)0);
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o->fun = fun;
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return o;
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}
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// min and max are inclusive
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mp_obj_t rt_make_function_var_between(int n_args_min, int n_args_max, mp_fun_var_t fun) {
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mp_obj_fun_native_t *o = m_new_obj(mp_obj_fun_native_t);
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o->base.type = &fun_native_type;
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o->n_args_min = n_args_min;
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o->n_args_max = n_args_max;
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o->fun = fun;
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return o;
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}
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/******************************************************************************/
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/* byte code functions */
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typedef struct _mp_obj_fun_bc_t {
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mp_obj_base_t base;
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mp_map_t *globals; // the context within which this function was defined
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int n_args; // number of arguments this function takes
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uint n_state; // total state size for the executing function (incl args, locals, stack)
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const byte *bytecode; // bytecode for the function
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} mp_obj_fun_bc_t;
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// args are in reverse order in the array
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mp_obj_t fun_bc_call_n(mp_obj_t self_in, int n_args, const mp_obj_t *args) {
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mp_obj_fun_bc_t *self = self_in;
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if (n_args != self->n_args) {
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nlr_jump(mp_obj_new_exception_msg_2_args(MP_QSTR_TypeError, "function takes %d positional arguments but %d were given", (const char*)(machine_int_t)self->n_args, (const char*)(machine_int_t)n_args));
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}
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// optimisation: allow the compiler to optimise this tail call for
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// the common case when the globals don't need to be changed
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mp_map_t *old_globals = rt_globals_get();
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if (self->globals == old_globals) {
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return mp_execute_byte_code(self->bytecode, args, n_args, self->n_state);
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} else {
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rt_globals_set(self->globals);
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mp_obj_t result = mp_execute_byte_code(self->bytecode, args, n_args, self->n_state);
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rt_globals_set(old_globals);
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return result;
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}
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}
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const mp_obj_type_t fun_bc_type = {
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{ &mp_const_type },
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"function",
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NULL, // print
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NULL, // make_new
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fun_bc_call_n, // call_n
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NULL, // unary_op
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NULL, // binary_op
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NULL, // getiter
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NULL, // iternext
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.methods = NULL,
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};
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mp_obj_t mp_obj_new_fun_bc(int n_args, uint n_state, const byte *code) {
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mp_obj_fun_bc_t *o = m_new_obj(mp_obj_fun_bc_t);
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o->base.type = &fun_bc_type;
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o->globals = rt_globals_get();
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o->n_args = n_args;
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o->n_state = n_state;
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o->bytecode = code;
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return o;
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}
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void mp_obj_fun_bc_get(mp_obj_t self_in, int *n_args, uint *n_state, const byte **code) {
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assert(MP_OBJ_IS_TYPE(self_in, &fun_bc_type));
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mp_obj_fun_bc_t *self = self_in;
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*n_args = self->n_args;
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*n_state = self->n_state;
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*code = self->bytecode;
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}
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/******************************************************************************/
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/* inline assembler functions */
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typedef struct _mp_obj_fun_asm_t {
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mp_obj_base_t base;
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int n_args;
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void *fun;
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} mp_obj_fun_asm_t;
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typedef machine_uint_t (*inline_asm_fun_0_t)();
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typedef machine_uint_t (*inline_asm_fun_1_t)(machine_uint_t);
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typedef machine_uint_t (*inline_asm_fun_2_t)(machine_uint_t, machine_uint_t);
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typedef machine_uint_t (*inline_asm_fun_3_t)(machine_uint_t, machine_uint_t, machine_uint_t);
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// convert a Micro Python object to a sensible value for inline asm
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machine_uint_t convert_obj_for_inline_asm(mp_obj_t obj) {
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// TODO for byte_array, pass pointer to the array
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if (MP_OBJ_IS_SMALL_INT(obj)) {
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return MP_OBJ_SMALL_INT_VALUE(obj);
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} else if (obj == mp_const_none) {
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return 0;
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} else if (obj == mp_const_false) {
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return 0;
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} else if (obj == mp_const_true) {
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return 1;
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} else if (MP_OBJ_IS_TYPE(obj, &str_type)) {
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// pointer to the string (it's probably constant though!)
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return (machine_uint_t)qstr_str(mp_obj_str_get(obj));
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#if MICROPY_ENABLE_FLOAT
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} else if (MP_OBJ_IS_TYPE(obj, &float_type)) {
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// convert float to int (could also pass in float registers)
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return (machine_int_t)mp_obj_float_get(obj);
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#endif
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} else if (MP_OBJ_IS_TYPE(obj, &tuple_type)) {
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// pointer to start of tuple (could pass length, but then could use len(x) for that)
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uint len;
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mp_obj_t *items;
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mp_obj_tuple_get(obj, &len, &items);
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return (machine_uint_t)items;
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} else if (MP_OBJ_IS_TYPE(obj, &list_type)) {
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// pointer to start of list (could pass length, but then could use len(x) for that)
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uint len;
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mp_obj_t *items;
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mp_obj_list_get(obj, &len, &items);
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return (machine_uint_t)items;
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} else {
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// just pass along a pointer to the object
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return (machine_uint_t)obj;
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}
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}
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// convert a return value from inline asm to a sensible Micro Python object
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mp_obj_t convert_val_from_inline_asm(machine_uint_t val) {
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return MP_OBJ_NEW_SMALL_INT(val);
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}
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// args are in reverse order in the array
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mp_obj_t fun_asm_call_n(mp_obj_t self_in, int n_args, const mp_obj_t *args) {
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mp_obj_fun_asm_t *self = self_in;
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if (n_args != self->n_args) {
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nlr_jump(mp_obj_new_exception_msg_2_args(MP_QSTR_TypeError, "function takes %d positional arguments but %d were given", (const char*)(machine_int_t)self->n_args, (const char*)(machine_int_t)n_args));
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}
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machine_uint_t ret;
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if (n_args == 0) {
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ret = ((inline_asm_fun_0_t)self->fun)();
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} else if (n_args == 1) {
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ret = ((inline_asm_fun_1_t)self->fun)(convert_obj_for_inline_asm(args[0]));
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} else if (n_args == 2) {
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ret = ((inline_asm_fun_2_t)self->fun)(convert_obj_for_inline_asm(args[1]), convert_obj_for_inline_asm(args[0]));
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} else if (n_args == 3) {
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ret = ((inline_asm_fun_3_t)self->fun)(convert_obj_for_inline_asm(args[2]), convert_obj_for_inline_asm(args[1]), convert_obj_for_inline_asm(args[0]));
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} else {
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assert(0);
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ret = 0;
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}
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return convert_val_from_inline_asm(ret);
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}
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static const mp_obj_type_t fun_asm_type = {
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{ &mp_const_type },
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"function",
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NULL, // print
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NULL, // make_new
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fun_asm_call_n, // call_n
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NULL, // unary_op
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NULL, // binary_op
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NULL, // getiter
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NULL, // iternext
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.methods = NULL,
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};
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mp_obj_t mp_obj_new_fun_asm(uint n_args, void *fun) {
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mp_obj_fun_asm_t *o = m_new_obj(mp_obj_fun_asm_t);
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o->base.type = &fun_asm_type;
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o->n_args = n_args;
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o->fun = fun;
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return o;
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}
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