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Replace Python exception machinery with a global and some macros.

tags/v0.2
Ben Kurtovic 12 anni fa
parent
commit
ff0b4439f8
3 ha cambiato i file con 43 aggiunte e 31 eliminazioni
  1. +36
    -30
      mwparserfromhell/parser/tokenizer.c
  2. +5
    -1
      mwparserfromhell/parser/tokenizer.h
  3. +2
    -0
      mwparserfromhell/parser/tokenizer.py

+ 36
- 30
mwparserfromhell/parser/tokenizer.c Vedi File

@@ -213,7 +213,7 @@ Tokenizer_fail_route(Tokenizer* self)
{
PyObject* stack = Tokenizer_pop(self);
Py_XDECREF(stack);
PyErr_SetNone(BadRoute);
FAIL_ROUTE();
return NULL;
}

@@ -382,7 +382,6 @@ Tokenizer_parse_template_or_argument(Tokenizer* self)
while (braces) {
if (braces == 1) {
PyObject* text = PyUnicode_FromString("{");

if (Tokenizer_write_text_then_stack(self, text)) {
Py_XDECREF(text);
return -1;
@@ -393,10 +392,11 @@ Tokenizer_parse_template_or_argument(Tokenizer* self)
}

if (braces == 2) {
if (Tokenizer_parse_template(self)) return -1;
if (Tokenizer_parse_template(self))
return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
PyObject* text = PyUnicode_FromString("{{");
if (Tokenizer_write_text_then_stack(self, text)) {
Py_XDECREF(text);
@@ -409,16 +409,16 @@ Tokenizer_parse_template_or_argument(Tokenizer* self)
break;
}

if (Tokenizer_parse_argument(self)) return -1;
braces -= 3;
if (Tokenizer_parse_argument(self))
return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (Tokenizer_parse_template(self)) return -1;
braces -= 2;
if (BAD_ROUTE) {
RESET_ROUTE();
if (Tokenizer_parse_template(self))
return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
char bracestr[braces];
for (i = 0; i < braces; i++) bracestr[i] = *"{";
PyObject* text = PyUnicode_FromString(bracestr);
@@ -431,6 +431,12 @@ Tokenizer_parse_template_or_argument(Tokenizer* self)
Py_XDECREF(text);
return 0;
}
else {
braces -= 2;
}
}
else {
braces -= 3;
}

if (braces) {
@@ -459,7 +465,7 @@ Tokenizer_parse_template(Tokenizer* self)
Py_ssize_t reset = self->head;

template = Tokenizer_parse(self, LC_TEMPLATE_NAME);
if (PyErr_Occurred()) {
if (BAD_ROUTE) {
self->head = reset;
return 0;
}
@@ -515,7 +521,7 @@ Tokenizer_parse_argument(Tokenizer* self)
Py_ssize_t reset = self->head;

argument = Tokenizer_parse(self, LC_ARGUMENT_NAME);
if (PyErr_Occurred()) {
if (BAD_ROUTE) {
self->head = reset;
return 0;
}
@@ -724,7 +730,7 @@ Tokenizer_handle_template_param_value(Tokenizer* self)
if (Tokenizer_verify_safe(self, unsafes))
return -1;

if (PyErr_Occurred()) {
if (BAD_ROUTE) {
PyObject* stack = Tokenizer_pop(self);
Py_XDECREF(stack);
return 0;
@@ -847,8 +853,8 @@ Tokenizer_parse_wikilink(Tokenizer* self)
PyObject *wikilink = Tokenizer_parse(self, LC_WIKILINK_TITLE);
if (!wikilink) return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
self->head = reset;
PyObject* text = PyUnicode_FromString("[[");
if (!text) return -1;
@@ -966,8 +972,8 @@ Tokenizer_parse_heading(Tokenizer* self)
Py_ssize_t context = LC_HEADING_LEVEL_1 << (best > 5 ? 5 : best - 1);
HeadingData* heading = (HeadingData*) Tokenizer_parse(self, context);

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
self->head = reset + best - 1;
char blocks[best];
for (i = 0; i < best; i++) blocks[i] = *"=";
@@ -1092,8 +1098,8 @@ Tokenizer_handle_heading_end(Tokenizer* self)
Py_ssize_t context = Tokenizer_CONTEXT_VAL(self);
HeadingData* after = (HeadingData*) Tokenizer_parse(self, context);

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
if (level < best) {
Py_ssize_t diff = best - level;
char diffblocks[diff];
@@ -1174,8 +1180,8 @@ Tokenizer_parse_entity(Tokenizer* self)
if (Tokenizer_really_parse_entity(self))
return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
self->head = reset;
if (Tokenizer_write_text(self, Tokenizer_read(self, 0)))
return -1;
@@ -1206,8 +1212,8 @@ Tokenizer_parse_comment(Tokenizer* self)
PyObject *comment = Tokenizer_parse(self, LC_WIKILINK_TITLE);
if (!comment) return -1;

if (PyErr_Occurred()) {
PyErr_Clear();
if (BAD_ROUTE) {
RESET_ROUTE();
self->head = reset;
PyObject* text = PyUnicode_FromString("<!--");
if (!text) return -1;
@@ -1293,6 +1299,10 @@ Tokenizer_parse(Tokenizer* self, Py_ssize_t context)
this_context = Tokenizer_CONTEXT_VAL(self);

if (this_data == *"") {
if (this_context & LC_TEMPLATE_PARAM_KEY) {
PyObject* trash = Tokenizer_pop(self);
Py_XDECREF(trash);
}
if (this_context & fail_contexts) {
return Tokenizer_fail_route(self);
}
@@ -1431,10 +1441,6 @@ init_tokenizer(void)
Py_INCREF(&TokenizerType);
PyModule_AddObject(module, "CTokenizer", (PyObject*) &TokenizerType);

BadRoute = PyErr_NewException("_tokenizer.BadRoute", NULL, NULL);
Py_INCREF(BadRoute);
PyModule_AddObject(module, "BadRoute", BadRoute);

EMPTY = PyUnicode_FromString("");
NOARGS = PyTuple_New(0);



+ 5
- 1
mwparserfromhell/parser/tokenizer.h Vedi File

@@ -34,9 +34,13 @@ static const char* MARKERS[] = {
"!", "\n", ""};
static const int NUM_MARKERS = 18;

static int route_state = 0;
#define BAD_ROUTE (route_state)
#define FAIL_ROUTE() (route_state = 1)
#define RESET_ROUTE() (route_state = 0)

static PyObject* EMPTY;
static PyObject* NOARGS;
static PyObject* BadRoute;
static PyObject* tokens;




+ 2
- 0
mwparserfromhell/parser/tokenizer.py Vedi File

@@ -432,6 +432,8 @@ class Tokenizer(object):
if this is self.END:
fail = (contexts.TEMPLATE | contexts.ARGUMENT |
contexts.HEADING | contexts.COMMENT)
if self._context & contexts.TEMPLATE_PARAM_KEY:
self._pop()
if self._context & fail:
self._fail_route()
return self._pop()


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