size_t mp_repl_autocomplete(const char *str, size_t len, const mp_print_t *print, const char **compl_str) {
// scan backwards to find start of "a.b.c" chain
const char *org_str = str;
const char *top = str + len;
for (const char *s = top; --s >= str;) {
if (!(unichar_isalpha(*s) || unichar_isdigit(*s) || *s == '_' || *s == '.')) {
++s;
str = s;
break;
}
}
size_t nqstr = QSTR_TOTAL();
// begin search in outer global dict which is accessed from __main__
mp_obj_t obj = MP_OBJ_FROM_PTR(&mp_module___main__);
mp_obj_t dest[2];
for (;;) {
// get next word in string to complete
const char *s_start = str;
while (str < top && *str != '.') {
++str;
}
size_t s_len = str - s_start;
if (str < top) {
// a complete word, lookup in current object
qstr q = qstr_find_strn(s_start, s_len);
if (q == MP_QSTR_NULL) {
// lookup will fail
return 0;
}
mp_load_method_maybe(obj, q, dest);
obj = dest[0]; // attribute, method, or MP_OBJ_NULL if nothing found
if (obj == MP_OBJ_NULL) {
// lookup failed
return 0;
}
// skip '.' to move to next word
++str;
} else {
// end of string, do completion on this partial name
// look for matches
const char *match_str = NULL;
size_t match_len = 0;
qstr q_first = 0, q_last;
for (qstr q = 1; q < nqstr; ++q) {
size_t d_len;
const char *d_str = (const char*)qstr_data(q, &d_len);
if (s_len <= d_len && strncmp(s_start, d_str, s_len) == 0) {
mp_load_method_maybe(obj, q, dest);
if (dest[0] != MP_OBJ_NULL) {
if (match_str == NULL) {
match_str = d_str;
match_len = d_len;
} else {
// search for longest common prefix of match_str and d_str
// (assumes these strings are null-terminated)
for (size_t j = s_len; j <= match_len && j <= d_len; ++j) {
if (match_str[j] != d_str[j]) {
match_len = j;
break;
}
}
}
if (q_first == 0) {
q_first = q;
}
q_last = q;
}
}
}
// nothing found
if (q_first == 0) {
// If there're no better alternatives, and if it's first word
// in the line, try to complete "import".
if (s_start == org_str) {
static const char import_str[] = "import ";
if (memcmp(s_start, import_str, s_len) == 0) {
*compl_str = import_str + s_len;
return sizeof(import_str) - 1 - s_len;
}
}
return 0;
}
// 1 match found, or multiple matches with a common prefix
if (q_first == q_last || match_len > s_len) {
*compl_str = match_str + s_len;
return match_len - s_len;
}
// multiple matches found, print them out
#define WORD_SLOT_LEN (16)
#define MAX_LINE_LEN (4 * WORD_SLOT_LEN)
int line_len = MAX_LINE_LEN; // force a newline for first word
for (qstr q = q_first; q <= q_last; ++q) {
size_t d_len;
const char *d_str = (const char*)qstr_data(q, &d_len);
if (s_len <= d_len && strncmp(s_start, d_str, s_len) == 0) {
mp_load_method_maybe(obj, q, dest);
if (dest[0] != MP_OBJ_NULL) {
int gap = (line_len + WORD_SLOT_LEN - 1) / WORD_SLOT_LEN * WORD_SLOT_LEN - line_len;
if (gap < 2) {
gap += WORD_SLOT_LEN;
}
if (line_len + gap + d_len <= MAX_LINE_LEN) {
// TODO optimise printing of gap?
for (int j = 0; j < gap; ++j) {
mp_print_str(print, " ");
}
mp_print_str(print, d_str);
line_len += gap + d_len;
} else {
mp_printf(print, "\n%s", d_str);
line_len = d_len;
}
}
}
}
mp_print_str(print, "\n");
return (size_t)(-1); // indicate many matches
}
}
}
STATIC void emit_inline_xtensa_op(emit_inline_asm_t *emit, qstr op, mp_uint_t n_args, mp_parse_node_t *pn_args) {
size_t op_len;
const char *op_str = (const char*)qstr_data(op, &op_len);
if (n_args == 0) {
if (op == MP_QSTR_ret_n) {
asm_xtensa_op_ret_n(&emit->as);
} else {
goto unknown_op;
}
} else if (n_args == 1) {
if (op == MP_QSTR_callx0) {
uint r0 = get_arg_reg(emit, op_str, pn_args[0]);
asm_xtensa_op_callx0(&emit->as, r0);
} else if (op == MP_QSTR_j) {
int label = get_arg_label(emit, op_str, pn_args[0]);
asm_xtensa_j_label(&emit->as, label);
} else if (op == MP_QSTR_jx) {
uint r0 = get_arg_reg(emit, op_str, pn_args[0]);
asm_xtensa_op_jx(&emit->as, r0);
} else {
goto unknown_op;
}
} else if (n_args == 2) {
uint r0 = get_arg_reg(emit, op_str, pn_args[0]);
if (op == MP_QSTR_beqz) {
int label = get_arg_label(emit, op_str, pn_args[1]);
asm_xtensa_bccz_reg_label(&emit->as, ASM_XTENSA_CCZ_EQ, r0, label);
} else if (op == MP_QSTR_bnez) {
int label = get_arg_label(emit, op_str, pn_args[1]);
asm_xtensa_bccz_reg_label(&emit->as, ASM_XTENSA_CCZ_NE, r0, label);
} else if (op == MP_QSTR_mov || op == MP_QSTR_mov_n) {
// we emit mov.n for both "mov" and "mov_n" opcodes
uint r1 = get_arg_reg(emit, op_str, pn_args[1]);
asm_xtensa_op_mov_n(&emit->as, r0, r1);
} else if (op == MP_QSTR_movi) {
// for convenience we emit l32r if the integer doesn't fit in movi
uint32_t imm = get_arg_i(emit, op_str, pn_args[1], 0, 0);
asm_xtensa_mov_reg_i32(&emit->as, r0, imm);
} else {
goto unknown_op;
}
} else if (n_args == 3) {
// search table for 3 arg instructions
for (uint i = 0; i < MP_ARRAY_SIZE(opcode_table_3arg); i++) {
const opcode_table_3arg_t *o = &opcode_table_3arg[i];
if (op == o->name) {
uint r0 = get_arg_reg(emit, op_str, pn_args[0]);
uint r1 = get_arg_reg(emit, op_str, pn_args[1]);
if (o->type == RRR) {
uint r2 = get_arg_reg(emit, op_str, pn_args[2]);
asm_xtensa_op24(&emit->as, ASM_XTENSA_ENCODE_RRR(0, o->a0, o->a1, r0, r1, r2));
} else if (o->type == RRI8_B) {
int label = get_arg_label(emit, op_str, pn_args[2]);
asm_xtensa_bcc_reg_reg_label(&emit->as, o->a0, r0, r1, label);
} else {
int shift, min, max;
if ((o->type & 0xf0) == 0) {
shift = 0;
min = -128;
max = 127;
} else {
shift = (o->type & 0xf0) >> 5;
min = 0;
max = 0xff << shift;
}
uint32_t imm = get_arg_i(emit, op_str, pn_args[2], min, max);
asm_xtensa_op24(&emit->as, ASM_XTENSA_ENCODE_RRI8(o->a0, o->a1, r1, r0, (imm >> shift) & 0xff));
}
return;
}
}
goto unknown_op;
} else {
