292 lines
10 KiB
C
292 lines
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 "qstr.h"
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#include "obj.h"
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#include "objtuple.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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void check_nargs(mp_obj_fun_native_t *self, int n_args, int n_kw) {
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if (n_kw && !self->is_kw) {
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nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError,
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"function does not take keyword arguments"));
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}
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if (self->n_args_min == self->n_args_max) {
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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,
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"function takes %d positional arguments but %d were given",
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(const char*)(machine_int_t)self->n_args_min,
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(const char*)(machine_int_t)n_args));
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}
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} else {
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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,
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"<fun name>() missing %d required positional arguments: <list of names of params>",
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(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,
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"<fun name> expected at most %d arguments, got %d",
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(void*)(machine_int_t)self->n_args_max, (void*)(machine_int_t)n_args));
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}
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}
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}
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mp_obj_t fun_native_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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assert(MP_OBJ_IS_TYPE(self_in, &fun_native_type));
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mp_obj_fun_native_t *self = self_in;
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// check number of arguments
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check_nargs(self, n_args, n_kw);
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if (self->is_kw) {
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// function allows keywords
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// we create a map directly from the given args array
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mp_map_t kw_args;
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mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
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return ((mp_fun_kw_t)self->fun)(n_args, args, &kw_args);
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} else if (self->n_args_min <= 3 && self->n_args_min == self->n_args_max) {
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// function requires a fixed number of arguments
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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[0], args[1]);
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case 3:
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return ((mp_fun_3_t)self->fun)(args[0], args[1], args[2]);
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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, but no keywords
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return ((mp_fun_var_t)self->fun)(n_args, args);
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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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.call = fun_native_call,
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};
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// fun must have the correct signature for n_args fixed arguments
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mp_obj_t rt_make_function_n(int n_args, void *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->is_kw = false;
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o->n_args_min = n_args;
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o->n_args_max = n_args;
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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->is_kw = false;
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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->is_kw = false;
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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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short n_args; // number of arguments this function takes
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short n_def_args; // number of default arguments
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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_t def_args[]; // values of default args, if any
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} mp_obj_fun_bc_t;
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mp_obj_t fun_bc_call(mp_obj_t self_in, uint n_args, uint n_kw, 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 - self->n_def_args || 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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if (n_kw != 0) {
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nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "function does not take keyword arguments"));
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}
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uint use_def_args = self->n_args - n_args;
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mp_map_t *old_globals = rt_globals_get();
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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->def_args + self->n_def_args - use_def_args, use_def_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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const mp_obj_type_t fun_bc_type = {
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{ &mp_const_type },
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"function",
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.call = fun_bc_call,
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};
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mp_obj_t mp_obj_new_fun_bc(int n_args, mp_obj_t def_args_in, uint n_state, const byte *code) {
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int n_def_args = 0;
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mp_obj_tuple_t *def_args = def_args_in;
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if (def_args != MP_OBJ_NULL) {
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n_def_args = def_args->len;
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}
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mp_obj_fun_bc_t *o = m_new_obj_var(mp_obj_fun_bc_t, mp_obj_t, n_def_args);
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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_def_args = n_def_args;
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o->n_state = n_state;
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o->bytecode = code;
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if (def_args != MP_OBJ_NULL) {
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memcpy(o->def_args, def_args->items, n_def_args * sizeof(*o->def_args));
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}
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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_STR(obj)) {
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// pointer to the string (it's probably constant though!)
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uint l;
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return (machine_uint_t)mp_obj_str_get_data(obj, &l);
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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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mp_obj_t fun_asm_call(mp_obj_t self_in, uint n_args, uint n_kw, 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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if (n_kw != 0) {
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nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "function does not take keyword arguments"));
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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[0]), convert_obj_for_inline_asm(args[1]));
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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[0]), convert_obj_for_inline_asm(args[1]), convert_obj_for_inline_asm(args[2]));
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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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.call = fun_asm_call,
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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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