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Implement mp_parse_node_free; print properly repr(string).

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This commit is contained in:
Damien George 2014-01-25 13:51:19 +00:00
parent e0722ee9d9
commit b829b5caec
15 changed files with 115 additions and 62 deletions
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5
py/builtineval.c
View File

@ -24,13 +24,13 @@ static mp_obj_t mp_builtin_eval(mp_obj_t o_in) {
const byte *str = mp_obj_str_get_data(o_in, &str_len);
// create the lexer
mp_lexer_t *lex = mp_lexer_new_from_str_len("<string>", (const char*)str, str_len, 0);
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, (const char*)str, str_len, 0);
qstr source_name = mp_lexer_source_name(lex);
// parse the string
qstr parse_exc_id;
const char *parse_exc_msg;
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_EVAL_INPUT, &parse_exc_id, &parse_exc_msg);
qstr source_name = mp_lexer_source_name(lex);
mp_lexer_free(lex);
if (pn == MP_PARSE_NODE_NULL) {
@ -40,6 +40,7 @@ static mp_obj_t mp_builtin_eval(mp_obj_t o_in) {
// compile the string
mp_obj_t module_fun = mp_compile(pn, source_name, false);
mp_parse_node_free(pn);
if (module_fun == mp_const_none) {
// TODO handle compile error correctly

7
py/builtinimport.c
View File

@ -29,9 +29,7 @@ mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
}
*/
uint mod_name_l;
const byte *mod_name_s = mp_obj_str_get_data(args[0], &mod_name_l);
qstr mod_name = qstr_from_strn((const char*)mod_name_s, mod_name_l);
qstr mod_name = mp_obj_str_get_qstr(args[0]);
mp_obj_t loaded = mp_obj_module_get(mod_name);
if (loaded != MP_OBJ_NULL) {
@ -44,6 +42,7 @@ mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
// TODO handle lexer error correctly
return mp_const_none;
}
qstr source_name = mp_lexer_source_name(lex);
// create a new module object
mp_obj_t module_obj = mp_obj_new_module(mod_name);
@ -60,7 +59,6 @@ mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
qstr parse_exc_id;
const char *parse_exc_msg;
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_FILE_INPUT, &parse_exc_id, &parse_exc_msg);
qstr source_name = mp_lexer_source_name(lex);
mp_lexer_free(lex);
if (pn == MP_PARSE_NODE_NULL) {
@ -72,6 +70,7 @@ mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
// compile the imported script
mp_obj_t module_fun = mp_compile(pn, source_name, false);
mp_parse_node_free(pn);
if (module_fun == mp_const_none) {
// TODO handle compile error correctly

31
py/emitcpy.c
View File

@ -192,29 +192,26 @@ static void print_quoted_str(qstr qstr, bool bytes) {
if (bytes) {
printf("b");
}
bool quote_single = false;
int quote_char = '\'';
if (has_single_quote && !has_double_quote) {
printf("\"");
} else {
quote_single = true;
printf("'");
quote_char = '"';
}
for (int i = 0; i < len; i++) {
if (str[i] == '\n') {
printf("\\n");
} else if (str[i] == '\\') {
printf("%c", quote_char);
for (const char *s = str, *top = str + len; s < top; s++) {
if (*s == quote_char) {
printf("\\%c", quote_char);
} else if (*s == '\\') {
printf("\\\\");
} else if (str[i] == '\'' && quote_single) {
printf("\\'");
} else if (32 <= *s && *s <= 126) {
printf("%c", *s);
} else if (*s == '\n') {
printf("\\n");
// TODO add more escape codes here
} else {
printf("%c", str[i]);
printf("\\x%02x", (*s) & 0xff);
}
}
if (has_single_quote && !has_double_quote) {
printf("\"");
} else {
printf("'");
}
printf("%c", quote_char);
}
static void emit_cpy_load_const_str(emit_t *emit, qstr qstr, bool bytes) {

8
py/lexer.c
View File

@ -493,8 +493,8 @@ static void mp_lexer_next_token_into(mp_lexer_t *lex, mp_token_t *tok, bool firs
}
c = num;
} else {
// TODO error message
assert(0);
// unrecognised escape character; CPython lets this through verbatim as '\' and then the character
vstr_add_char(&lex->vstr, '\\');
}
break;
}
@ -644,10 +644,10 @@ static void mp_lexer_next_token_into(mp_lexer_t *lex, mp_token_t *tok, bool firs
}
}
mp_lexer_t *mp_lexer_new(const char *src_name, void *stream_data, mp_lexer_stream_next_char_t stream_next_char, mp_lexer_stream_close_t stream_close) {
mp_lexer_t *mp_lexer_new(qstr src_name, void *stream_data, mp_lexer_stream_next_char_t stream_next_char, mp_lexer_stream_close_t stream_close) {
mp_lexer_t *lex = m_new(mp_lexer_t, 1);
lex->source_name = qstr_from_str(src_name);
lex->source_name = src_name;
lex->stream_data = stream_data;
lex->stream_next_char = stream_next_char;
lex->stream_close = stream_close;

4
py/lexer.h
View File

@ -124,8 +124,8 @@ typedef struct _mp_lexer_t mp_lexer_t;
void mp_token_show(const mp_token_t *tok);
mp_lexer_t *mp_lexer_new(const char *src_name, void *stream_data, mp_lexer_stream_next_char_t stream_next_char, mp_lexer_stream_close_t stream_close);
mp_lexer_t *mp_lexer_new_from_str_len(const char *src_name, const char *str, uint len, uint free_len);
mp_lexer_t *mp_lexer_new(qstr src_name, void *stream_data, mp_lexer_stream_next_char_t stream_next_char, mp_lexer_stream_close_t stream_close);
mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, uint len, uint free_len);
void mp_lexer_free(mp_lexer_t *lex);
qstr mp_lexer_source_name(mp_lexer_t *lex);

2
py/lexerstr.c
View File

@ -28,7 +28,7 @@ static void str_buf_free(mp_lexer_str_buf_t *sb) {
m_del_obj(mp_lexer_str_buf_t, sb);
}
mp_lexer_t *mp_lexer_new_from_str_len(const char *src_name, const char *str, uint len, uint free_len) {
mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, uint len, uint free_len) {
mp_lexer_str_buf_t *sb = m_new_obj(mp_lexer_str_buf_t);
sb->free_len = free_len;
sb->src_beg = str;

2
py/lexerunix.c
View File

@ -28,7 +28,7 @@ mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
return NULL;
}
return mp_lexer_new_from_str_len(filename, data, size, size);
return mp_lexer_new_from_str_len(qstr_from_str(filename), data, size, size);
}
/******************************************************************************/

1
py/obj.h
View File

@ -287,6 +287,7 @@ mp_obj_t mp_obj_str_builder_end(mp_obj_t o_in);
bool mp_obj_str_equal(mp_obj_t s1, mp_obj_t s2);
uint mp_obj_str_get_hash(mp_obj_t self_in);
uint mp_obj_str_get_len(mp_obj_t self_in);
qstr mp_obj_str_get_qstr(mp_obj_t self_in); // use this if you will anyway convert the string to a qstr
const char *mp_obj_str_get_str(mp_obj_t self_in); // use this only if you need the string to be null terminated
const byte *mp_obj_str_get_data(mp_obj_t self_in, uint *len);

62
py/objstr.c
View File

@ -40,11 +40,39 @@ void str_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj
if (kind == PRINT_STR && !is_bytes) {
print(env, "%.*s", str_len, str_data);
} else {
// this escapes characters, but it will be very slow to print (calling print many times)
bool has_single_quote = false;
bool has_double_quote = false;
for (const byte *s = str_data, *top = str_data + str_len; (!has_single_quote || !has_double_quote) && s < top; s++) {
if (*s == '\'') {
has_single_quote = true;
} else if (*s == '"') {
has_double_quote = true;
}
}
if (is_bytes) {
print(env, "b");
}
// TODO need to escape chars etc
print(env, "'%.*s'", str_len, str_data);
int quote_char = '\'';
if (has_single_quote && !has_double_quote) {
quote_char = '"';
}
print(env, "%c", quote_char);
for (const byte *s = str_data, *top = str_data + str_len; s < top; s++) {
if (*s == quote_char) {
print(env, "\\%c", quote_char);
} else if (*s == '\\') {
print(env, "\\\\");
} else if (32 <= *s && *s <= 126) {
print(env, "%c", *s);
} else if (*s == '\n') {
print(env, "\\n");
// TODO add more escape codes here if we want to match CPython
} else {
print(env, "\\x%02x", *s);
}
}
print(env, "%c", quote_char);
}
}
@ -474,13 +502,17 @@ bool mp_obj_str_equal(mp_obj_t s1, mp_obj_t s2) {
}
}
void bad_implicit_conversion(mp_obj_t self_in) __attribute__((noreturn));
void bad_implicit_conversion(mp_obj_t self_in) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "Can't convert '%s' object to str implicitly", mp_obj_get_type_str(self_in)));
}
uint mp_obj_str_get_hash(mp_obj_t self_in) {
if (MP_OBJ_IS_STR(self_in)) {
GET_STR_HASH(self_in, h);
return h;
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "Can't convert '%s' object to str implicitly",
mp_obj_get_type_str(self_in)));
bad_implicit_conversion(self_in);
}
}
@ -489,8 +521,20 @@ uint mp_obj_str_get_len(mp_obj_t self_in) {
GET_STR_LEN(self_in, l);
return l;
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "Can't convert '%s' object to str implicitly",
mp_obj_get_type_str(self_in)));
bad_implicit_conversion(self_in);
}
}
// use this if you will anyway convert the string to a qstr
// will be more efficient for the case where it's already a qstr
qstr mp_obj_str_get_qstr(mp_obj_t self_in) {
if (MP_OBJ_IS_QSTR(self_in)) {
return MP_OBJ_QSTR_VALUE(self_in);
} else if (MP_OBJ_IS_TYPE(self_in, &str_type)) {
mp_obj_str_t *self = self_in;
return qstr_from_strn((char*)self->data, self->len);
} else {
bad_implicit_conversion(self_in);
}
}
@ -502,8 +546,7 @@ const char *mp_obj_str_get_str(mp_obj_t self_in) {
(void)l; // len unused
return (const char*)s;
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "Can't convert '%s' object to str implicitly",
mp_obj_get_type_str(self_in)));
bad_implicit_conversion(self_in);
}
}
@ -513,8 +556,7 @@ const byte *mp_obj_str_get_data(mp_obj_t self_in, uint *len) {
*len = l;
return s;
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "Can't convert '%s' object to str implicitly",
mp_obj_get_type_str(self_in)));
bad_implicit_conversion(self_in);
}
}

40
py/parse.c
View File

@ -26,6 +26,8 @@
#define RULE_ARG_OPT_TOK (0x3000)
#define RULE_ARG_OPT_RULE (0x4000)
#define ADD_BLANK_NODE(rule_id) ((rule_id) == RULE_funcdef || (rule_id) == RULE_classdef || (rule_id) == RULE_comp_for || (rule_id) == RULE_lambdef || (rule_id) == RULE_lambdef_nocond)
// (un)comment to use rule names; for debugging
//#define USE_RULE_NAME (1)
@ -135,15 +137,23 @@ mp_parse_node_struct_t *parse_node_new_struct(int src_line, int rule_id, int num
return pn;
}
int parse_node_free_struct(mp_parse_node_t pn_in) {
int cnt = 0;
if (MP_PARSE_NODE_IS_STRUCT(pn_in)) {
mp_parse_node_struct_t *pn = (mp_parse_node_struct_t *)pn_in;
int n = pn->kind_num_nodes >> 8;
for (int i = 0; i < n; i++) {
cnt += parse_node_free_struct(pn->nodes[i]);
uint mp_parse_node_free(mp_parse_node_t pn) {
uint cnt = 0;
if (MP_PARSE_NODE_IS_STRUCT(pn)) {
mp_parse_node_struct_t *pns = (mp_parse_node_struct_t *)pn;
uint n = MP_PARSE_NODE_STRUCT_NUM_NODES(pns);
uint rule_id = MP_PARSE_NODE_STRUCT_KIND(pns);
bool adjust = ADD_BLANK_NODE(rule_id);
if (adjust) {
n--;
}
m_del_var(mp_parse_node_struct_t, mp_parse_node_t, n, pn);
for (uint i = 0; i < n; i++) {
cnt += mp_parse_node_free(pns->nodes[i]);
}
if (adjust) {
n++;
}
m_del_var(mp_parse_node_struct_t, mp_parse_node_t, n, pns);
cnt++;
}
return cnt;
@ -174,15 +184,15 @@ void mp_parse_node_print(mp_parse_node_t pn, int indent) {
default: assert(0);
}
} else {
mp_parse_node_struct_t *pns2 = (mp_parse_node_struct_t*)pn;
int n = pns2->kind_num_nodes >> 8;
mp_parse_node_struct_t *pns = (mp_parse_node_struct_t*)pn;
uint n = MP_PARSE_NODE_STRUCT_NUM_NODES(pns);
#ifdef USE_RULE_NAME
printf("%s(%d) (n=%d)\n", rules[MP_PARSE_NODE_STRUCT_KIND(pns2)]->rule_name, MP_PARSE_NODE_STRUCT_KIND(pns2), n);
printf("%s(%d) (n=%d)\n", rules[MP_PARSE_NODE_STRUCT_KIND(pns)]->rule_name, MP_PARSE_NODE_STRUCT_KIND(pns), n);
#else
printf("rule(%u) (n=%d)\n", (uint)MP_PARSE_NODE_STRUCT_KIND(pns2), n);
printf("rule(%u) (n=%d)\n", (uint)MP_PARSE_NODE_STRUCT_KIND(pns), n);
#endif
for (int i = 0; i < n; i++) {
mp_parse_node_print(pns2->nodes[i], indent + 2);
for (uint i = 0; i < n; i++) {
mp_parse_node_print(pns->nodes[i], indent + 2);
}
}
}
@ -472,7 +482,7 @@ mp_parse_node_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, qstr
}
// always emit these rules, and add an extra blank node at the end (to be used by the compiler to store data)
if (rule->rule_id == RULE_funcdef || rule->rule_id == RULE_classdef || rule->rule_id == RULE_comp_for || rule->rule_id == RULE_lambdef || rule->rule_id == RULE_lambdef_nocond) {
if (ADD_BLANK_NODE(rule->rule_id)) {
emit_rule = true;
push_result_node(parser, MP_PARSE_NODE_NULL);
i += 1;

2
py/parse.h
View File

@ -53,7 +53,7 @@ typedef struct _mp_parse_node_struct_t {
#define MP_PARSE_NODE_STRUCT_NUM_NODES(pns) ((pns)->kind_num_nodes >> 8)
mp_parse_node_t mp_parse_node_new_leaf(machine_int_t kind, machine_int_t arg);
int parse_node_free_struct(mp_parse_node_t pn_in);
uint mp_parse_node_free(mp_parse_node_t pn);
void mp_parse_node_print(mp_parse_node_t pn, int indent);

1
py/qstrdefs.h
View File

@ -91,4 +91,5 @@ Q(<listcomp>)
Q(<dictcomp>)
Q(<setcomp>)
Q(<genexpr>)
Q(<string>)
Q(<stdin>)

2
stm/lexerfatfs.c
View File

@ -49,7 +49,7 @@ mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
f_read(&fb->fp, fb->buf, sizeof(fb->buf), &n);
fb->len = n;
fb->pos = 0;
return mp_lexer_new(filename, fb, (mp_lexer_stream_next_char_t)file_buf_next_char, (mp_lexer_stream_close_t)file_buf_close);
return mp_lexer_new(qstr_from_str(filename), fb, (mp_lexer_stream_next_char_t)file_buf_next_char, (mp_lexer_stream_close_t)file_buf_close);
}
/******************************************************************************/

5
stm/main.c
View File

@ -378,7 +378,7 @@ void do_repl(void) {
}
}
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", vstr_str(&line), vstr_len(&line), 0);
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0);
qstr parse_exc_id;
const char *parse_exc_msg;
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT, &parse_exc_id, &parse_exc_msg);
@ -393,6 +393,7 @@ void do_repl(void) {
// parse okay
mp_lexer_free(lex);
mp_obj_t module_fun = mp_compile(pn, source_name, true);
mp_parse_node_free(pn);
if (module_fun != mp_const_none) {
nlr_buf_t nlr;
uint32_t start = sys_tick_counter;
@ -439,6 +440,8 @@ bool do_file(const char *filename) {
mp_lexer_free(lex);
mp_obj_t module_fun = mp_compile(pn, source_name, false);
mp_parse_node_free(pn);
if (module_fun == mp_const_none) {
return false;
}

5
unix/main.c
View File

@ -62,7 +62,6 @@ static void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind
*/
mp_obj_t module_fun = mp_compile(pn, source_name, is_repl);
parse_node_free_struct(pn);
if (module_fun == mp_const_none) {
// compile error
@ -139,7 +138,7 @@ static void do_repl(void) {
}
}
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", line, strlen(line), false);
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line, strlen(line), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, true);
free(line);
}
@ -163,7 +162,7 @@ static void do_file(const char *file) {
}
static void do_str(const char *str) {
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", str, strlen(str), false);
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, str, strlen(str), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, false);
}