mirror of https://github.com/python/cpython
gh-104169: Refactor tokenizer into lexer and wrappers (#110684)
* The lexer, which include the actual lexeme producing logic, goes into the `lexer` directory. * The wrappers, one wrapper per input mode (file, string, utf-8, and readline), go into the `tokenizer` directory and include logic for creating a lexer instance and managing the buffer for different modes. --------- Co-authored-by: Pablo Galindo <pablogsal@gmail.com> Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
This commit is contained in:
parent
eb50cd37ea
commit
01481f2dc1
|
@ -347,20 +347,36 @@ PEGEN_OBJS= \
|
||||||
Parser/string_parser.o \
|
Parser/string_parser.o \
|
||||||
Parser/peg_api.o
|
Parser/peg_api.o
|
||||||
|
|
||||||
|
TOKENIZER_OBJS= \
|
||||||
|
Parser/lexer/buffer.o \
|
||||||
|
Parser/lexer/lexer.o \
|
||||||
|
Parser/lexer/state.o \
|
||||||
|
Parser/tokenizer/file_tokenizer.o \
|
||||||
|
Parser/tokenizer/readline_tokenizer.o \
|
||||||
|
Parser/tokenizer/string_tokenizer.o \
|
||||||
|
Parser/tokenizer/utf8_tokenizer.o \
|
||||||
|
Parser/tokenizer/helpers.o
|
||||||
|
|
||||||
PEGEN_HEADERS= \
|
PEGEN_HEADERS= \
|
||||||
$(srcdir)/Include/internal/pycore_parser.h \
|
$(srcdir)/Include/internal/pycore_parser.h \
|
||||||
$(srcdir)/Parser/pegen.h \
|
$(srcdir)/Parser/pegen.h \
|
||||||
$(srcdir)/Parser/string_parser.h
|
$(srcdir)/Parser/string_parser.h
|
||||||
|
|
||||||
|
TOKENIZER_HEADERS= \
|
||||||
|
Parser/lexer/buffer.h \
|
||||||
|
Parser/lexer/lexer.h \
|
||||||
|
Parser/lexer/state.h \
|
||||||
|
Parser/tokenizer/tokenizer.h \
|
||||||
|
Parser/tokenizer/helpers.h
|
||||||
|
|
||||||
POBJS= \
|
POBJS= \
|
||||||
Parser/token.o \
|
Parser/token.o \
|
||||||
|
|
||||||
PARSER_OBJS= $(POBJS) $(PEGEN_OBJS) Parser/myreadline.o Parser/tokenizer.o
|
PARSER_OBJS= $(POBJS) $(PEGEN_OBJS) $(TOKENIZER_OBJS) Parser/myreadline.o
|
||||||
|
|
||||||
PARSER_HEADERS= \
|
PARSER_HEADERS= \
|
||||||
$(PEGEN_HEADERS) \
|
$(PEGEN_HEADERS) \
|
||||||
$(srcdir)/Parser/tokenizer.h
|
$(TOKENIZER_HEADERS)
|
||||||
|
|
||||||
##########################################################################
|
##########################################################################
|
||||||
# Python
|
# Python
|
||||||
|
@ -1397,6 +1413,8 @@ regen-pegen-metaparser:
|
||||||
.PHONY: regen-pegen
|
.PHONY: regen-pegen
|
||||||
regen-pegen:
|
regen-pegen:
|
||||||
@$(MKDIR_P) $(srcdir)/Parser
|
@$(MKDIR_P) $(srcdir)/Parser
|
||||||
|
@$(MKDIR_P) $(srcdir)/Parser/tokenizer
|
||||||
|
@$(MKDIR_P) $(srcdir)/Parser/lexer
|
||||||
PYTHONPATH=$(srcdir)/Tools/peg_generator $(PYTHON_FOR_REGEN) -m pegen -q c \
|
PYTHONPATH=$(srcdir)/Tools/peg_generator $(PYTHON_FOR_REGEN) -m pegen -q c \
|
||||||
$(srcdir)/Grammar/python.gram \
|
$(srcdir)/Grammar/python.gram \
|
||||||
$(srcdir)/Grammar/Tokens \
|
$(srcdir)/Grammar/Tokens \
|
||||||
|
|
|
@ -0,0 +1,4 @@
|
||||||
|
Split the tokenizer into two separate directories:
|
||||||
|
- One part includes the actual lexeme producing logic and lives in ``Parser/lexer``.
|
||||||
|
- The second part wraps the lexer according to the different tokenization modes
|
||||||
|
we have (string, utf-8, file, interactive, readline) and lives in ``Parser/tokenizer``.
|
|
@ -172,7 +172,14 @@
|
||||||
<ClCompile Include="..\Parser\action_helpers.c" />
|
<ClCompile Include="..\Parser\action_helpers.c" />
|
||||||
<ClCompile Include="..\Parser\string_parser.c" />
|
<ClCompile Include="..\Parser\string_parser.c" />
|
||||||
<ClCompile Include="..\Parser\token.c" />
|
<ClCompile Include="..\Parser\token.c" />
|
||||||
<ClCompile Include="..\Parser\tokenizer.c" />
|
<ClCompile Include="..\Parser\lexer\buffer.c" />
|
||||||
|
<ClCompile Include="..\Parser\lexer\state.c" />
|
||||||
|
<ClCompile Include="..\Parser\lexer\lexer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\string_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\file_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\helpers.c" />
|
||||||
<ClCompile Include="..\PC\invalid_parameter_handler.c" />
|
<ClCompile Include="..\PC\invalid_parameter_handler.c" />
|
||||||
<ClCompile Include="..\PC\msvcrtmodule.c" />
|
<ClCompile Include="..\PC\msvcrtmodule.c" />
|
||||||
<ClCompile Include="..\PC\winreg.c" />
|
<ClCompile Include="..\PC\winreg.c" />
|
||||||
|
|
|
@ -397,7 +397,28 @@
|
||||||
<ClCompile Include="..\Parser\token.c">
|
<ClCompile Include="..\Parser\token.c">
|
||||||
<Filter>Source Files</Filter>
|
<Filter>Source Files</Filter>
|
||||||
</ClCompile>
|
</ClCompile>
|
||||||
<ClCompile Include="..\Parser\tokenizer.c">
|
<ClCompile Include="..\Parser\lexer\lexer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\lexer\buffer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\lexer\state.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\string_tokenizer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\file_tokenizer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c">
|
||||||
|
<Filter>Source Files</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\helpers.c">
|
||||||
<Filter>Source Files</Filter>
|
<Filter>Source Files</Filter>
|
||||||
</ClCompile>
|
</ClCompile>
|
||||||
<ClCompile Include="..\Python\traceback.c">
|
<ClCompile Include="..\Python\traceback.c">
|
||||||
|
|
|
@ -362,7 +362,11 @@
|
||||||
<ClInclude Include="..\Objects\stringlib\replace.h" />
|
<ClInclude Include="..\Objects\stringlib\replace.h" />
|
||||||
<ClInclude Include="..\Objects\stringlib\split.h" />
|
<ClInclude Include="..\Objects\stringlib\split.h" />
|
||||||
<ClInclude Include="..\Objects\unicodetype_db.h" />
|
<ClInclude Include="..\Objects\unicodetype_db.h" />
|
||||||
<ClInclude Include="..\Parser\tokenizer.h" />
|
<ClInclude Include="..\Parser\lexer\state.h" />
|
||||||
|
<ClInclude Include="..\Parser\lexer\lexer.h" />
|
||||||
|
<ClInclude Include="..\Parser\lexer\buffer.h" />
|
||||||
|
<ClInclude Include="..\Parser\tokenizer\helpers.h" />
|
||||||
|
<ClInclude Include="..\Parser\tokenizer\tokenizer.h" />
|
||||||
<ClInclude Include="..\Parser\string_parser.h" />
|
<ClInclude Include="..\Parser\string_parser.h" />
|
||||||
<ClInclude Include="..\Parser\pegen.h" />
|
<ClInclude Include="..\Parser\pegen.h" />
|
||||||
<ClInclude Include="..\PC\errmap.h" />
|
<ClInclude Include="..\PC\errmap.h" />
|
||||||
|
@ -507,7 +511,14 @@
|
||||||
<ClCompile Include="..\Objects\unionobject.c" />
|
<ClCompile Include="..\Objects\unionobject.c" />
|
||||||
<ClCompile Include="..\Objects\weakrefobject.c" />
|
<ClCompile Include="..\Objects\weakrefobject.c" />
|
||||||
<ClCompile Include="..\Parser\myreadline.c" />
|
<ClCompile Include="..\Parser\myreadline.c" />
|
||||||
<ClCompile Include="..\Parser\tokenizer.c" />
|
<ClCompile Include="..\Parser\lexer\state.c" />
|
||||||
|
<ClCompile Include="..\Parser\lexer\lexer.c" />
|
||||||
|
<ClCompile Include="..\Parser\lexer\buffer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\string_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\file_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c" />
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\helpers.c" />
|
||||||
<ClCompile Include="..\Parser\token.c" />
|
<ClCompile Include="..\Parser\token.c" />
|
||||||
<ClCompile Include="..\Parser\pegen.c" />
|
<ClCompile Include="..\Parser\pegen.c" />
|
||||||
<ClCompile Include="..\Parser\pegen_errors.c" />
|
<ClCompile Include="..\Parser\pegen_errors.c" />
|
||||||
|
|
|
@ -291,7 +291,19 @@
|
||||||
<ClInclude Include="..\Objects\unicodetype_db.h">
|
<ClInclude Include="..\Objects\unicodetype_db.h">
|
||||||
<Filter>Objects</Filter>
|
<Filter>Objects</Filter>
|
||||||
</ClInclude>
|
</ClInclude>
|
||||||
<ClInclude Include="..\Parser\tokenizer.h">
|
<ClInclude Include="..\Parser\lexer\lexer.h">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClInclude>
|
||||||
|
<ClInclude Include="..\Parser\lexer\state.h">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClInclude>
|
||||||
|
<ClInclude Include="..\Parser\lexer\buffer.h">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClInclude>
|
||||||
|
<ClInclude Include="..\Parser\tokenizer\tokenizer.h">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClInclude>
|
||||||
|
<ClInclude Include="..\Parser\tokenizer\helpers.h">
|
||||||
<Filter>Parser</Filter>
|
<Filter>Parser</Filter>
|
||||||
</ClInclude>
|
</ClInclude>
|
||||||
<ClInclude Include="..\PC\errmap.h">
|
<ClInclude Include="..\PC\errmap.h">
|
||||||
|
@ -1139,7 +1151,28 @@
|
||||||
<ClCompile Include="..\Parser\myreadline.c">
|
<ClCompile Include="..\Parser\myreadline.c">
|
||||||
<Filter>Parser</Filter>
|
<Filter>Parser</Filter>
|
||||||
</ClCompile>
|
</ClCompile>
|
||||||
<ClCompile Include="..\Parser\tokenizer.c">
|
<ClCompile Include="..\Parser\lexer\lexer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\lexer\state.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\lexer\buffer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\string_tokenizer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\file_tokenizer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c">
|
||||||
|
<Filter>Parser</Filter>
|
||||||
|
</ClCompile>
|
||||||
|
<ClCompile Include="..\Parser\tokenizer\helpers.c">
|
||||||
<Filter>Parser</Filter>
|
<Filter>Parser</Filter>
|
||||||
</ClCompile>
|
</ClCompile>
|
||||||
<ClCompile Include="..\Parser\token.c">
|
<ClCompile Include="..\Parser\token.c">
|
||||||
|
|
|
@ -1,7 +1,6 @@
|
||||||
#include <Python.h>
|
#include <Python.h>
|
||||||
|
|
||||||
#include "pegen.h"
|
#include "pegen.h"
|
||||||
#include "tokenizer.h"
|
|
||||||
#include "string_parser.h"
|
#include "string_parser.h"
|
||||||
#include "pycore_runtime.h" // _PyRuntime
|
#include "pycore_runtime.h" // _PyRuntime
|
||||||
|
|
||||||
|
|
|
@ -0,0 +1,76 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "state.h"
|
||||||
|
|
||||||
|
/* Traverse and remember all f-string buffers, in order to be able to restore
|
||||||
|
them after reallocating tok->buf */
|
||||||
|
void
|
||||||
|
_PyLexer_remember_fstring_buffers(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
int index;
|
||||||
|
tokenizer_mode *mode;
|
||||||
|
|
||||||
|
for (index = tok->tok_mode_stack_index; index >= 0; --index) {
|
||||||
|
mode = &(tok->tok_mode_stack[index]);
|
||||||
|
mode->f_string_start_offset = mode->f_string_start - tok->buf;
|
||||||
|
mode->f_string_multi_line_start_offset = mode->f_string_multi_line_start - tok->buf;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Traverse and restore all f-string buffers after reallocating tok->buf */
|
||||||
|
void
|
||||||
|
_PyLexer_restore_fstring_buffers(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
int index;
|
||||||
|
tokenizer_mode *mode;
|
||||||
|
|
||||||
|
for (index = tok->tok_mode_stack_index; index >= 0; --index) {
|
||||||
|
mode = &(tok->tok_mode_stack[index]);
|
||||||
|
mode->f_string_start = tok->buf + mode->f_string_start_offset;
|
||||||
|
mode->f_string_multi_line_start = tok->buf + mode->f_string_multi_line_start_offset;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Read a line of text from TOK into S, using the stream in TOK.
|
||||||
|
Return NULL on failure, else S.
|
||||||
|
|
||||||
|
On entry, tok->decoding_buffer will be one of:
|
||||||
|
1) NULL: need to call tok->decoding_readline to get a new line
|
||||||
|
2) PyUnicodeObject *: decoding_feof has called tok->decoding_readline and
|
||||||
|
stored the result in tok->decoding_buffer
|
||||||
|
3) PyByteArrayObject *: previous call to tok_readline_recode did not have enough room
|
||||||
|
(in the s buffer) to copy entire contents of the line read
|
||||||
|
by tok->decoding_readline. tok->decoding_buffer has the overflow.
|
||||||
|
In this case, tok_readline_recode is called in a loop (with an expanded buffer)
|
||||||
|
until the buffer ends with a '\n' (or until the end of the file is
|
||||||
|
reached): see tok_nextc and its calls to tok_reserve_buf.
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
_PyLexer_tok_reserve_buf(struct tok_state *tok, Py_ssize_t size)
|
||||||
|
{
|
||||||
|
Py_ssize_t cur = tok->cur - tok->buf;
|
||||||
|
Py_ssize_t oldsize = tok->inp - tok->buf;
|
||||||
|
Py_ssize_t newsize = oldsize + Py_MAX(size, oldsize >> 1);
|
||||||
|
if (newsize > tok->end - tok->buf) {
|
||||||
|
char *newbuf = tok->buf;
|
||||||
|
Py_ssize_t start = tok->start == NULL ? -1 : tok->start - tok->buf;
|
||||||
|
Py_ssize_t line_start = tok->start == NULL ? -1 : tok->line_start - tok->buf;
|
||||||
|
Py_ssize_t multi_line_start = tok->multi_line_start - tok->buf;
|
||||||
|
_PyLexer_remember_fstring_buffers(tok);
|
||||||
|
newbuf = (char *)PyMem_Realloc(newbuf, newsize);
|
||||||
|
if (newbuf == NULL) {
|
||||||
|
tok->done = E_NOMEM;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
tok->buf = newbuf;
|
||||||
|
tok->cur = tok->buf + cur;
|
||||||
|
tok->inp = tok->buf + oldsize;
|
||||||
|
tok->end = tok->buf + newsize;
|
||||||
|
tok->start = start < 0 ? NULL : tok->buf + start;
|
||||||
|
tok->line_start = line_start < 0 ? NULL : tok->buf + line_start;
|
||||||
|
tok->multi_line_start = multi_line_start < 0 ? NULL : tok->buf + multi_line_start;
|
||||||
|
_PyLexer_restore_fstring_buffers(tok);
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
|
@ -0,0 +1,10 @@
|
||||||
|
#ifndef _LEXER_BUFFER_H_
|
||||||
|
#define _LEXER_BUFFER_H_
|
||||||
|
|
||||||
|
#include "pyport.h"
|
||||||
|
|
||||||
|
void _PyLexer_remember_fstring_buffers(struct tok_state *tok);
|
||||||
|
void _PyLexer_restore_fstring_buffers(struct tok_state *tok);
|
||||||
|
int _PyLexer_tok_reserve_buf(struct tok_state *tok, Py_ssize_t size);
|
||||||
|
|
||||||
|
#endif
|
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1,10 @@
|
||||||
|
#ifndef _PY_LEXER_LEXER_H_
|
||||||
|
#define _PY_LEXER_LEXER_H_
|
||||||
|
|
||||||
|
#include "state.h"
|
||||||
|
|
||||||
|
int _PyLexer_update_fstring_expr(struct tok_state *tok, char cur);
|
||||||
|
|
||||||
|
int _PyTokenizer_Get(struct tok_state *, struct token *);
|
||||||
|
|
||||||
|
#endif
|
|
@ -0,0 +1,149 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "pycore_pystate.h"
|
||||||
|
#include "pycore_token.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "state.h"
|
||||||
|
|
||||||
|
/* Never change this */
|
||||||
|
#define TABSIZE 8
|
||||||
|
|
||||||
|
/* Create and initialize a new tok_state structure */
|
||||||
|
struct tok_state *
|
||||||
|
_PyTokenizer_tok_new(void)
|
||||||
|
{
|
||||||
|
struct tok_state *tok = (struct tok_state *)PyMem_Malloc(
|
||||||
|
sizeof(struct tok_state));
|
||||||
|
if (tok == NULL)
|
||||||
|
return NULL;
|
||||||
|
tok->buf = tok->cur = tok->inp = NULL;
|
||||||
|
tok->fp_interactive = 0;
|
||||||
|
tok->interactive_src_start = NULL;
|
||||||
|
tok->interactive_src_end = NULL;
|
||||||
|
tok->start = NULL;
|
||||||
|
tok->end = NULL;
|
||||||
|
tok->done = E_OK;
|
||||||
|
tok->fp = NULL;
|
||||||
|
tok->input = NULL;
|
||||||
|
tok->tabsize = TABSIZE;
|
||||||
|
tok->indent = 0;
|
||||||
|
tok->indstack[0] = 0;
|
||||||
|
tok->atbol = 1;
|
||||||
|
tok->pendin = 0;
|
||||||
|
tok->prompt = tok->nextprompt = NULL;
|
||||||
|
tok->lineno = 0;
|
||||||
|
tok->starting_col_offset = -1;
|
||||||
|
tok->col_offset = -1;
|
||||||
|
tok->level = 0;
|
||||||
|
tok->altindstack[0] = 0;
|
||||||
|
tok->decoding_state = STATE_INIT;
|
||||||
|
tok->decoding_erred = 0;
|
||||||
|
tok->enc = NULL;
|
||||||
|
tok->encoding = NULL;
|
||||||
|
tok->cont_line = 0;
|
||||||
|
tok->filename = NULL;
|
||||||
|
tok->decoding_readline = NULL;
|
||||||
|
tok->decoding_buffer = NULL;
|
||||||
|
tok->readline = NULL;
|
||||||
|
tok->type_comments = 0;
|
||||||
|
tok->interactive_underflow = IUNDERFLOW_NORMAL;
|
||||||
|
tok->underflow = NULL;
|
||||||
|
tok->str = NULL;
|
||||||
|
tok->report_warnings = 1;
|
||||||
|
tok->tok_extra_tokens = 0;
|
||||||
|
tok->comment_newline = 0;
|
||||||
|
tok->implicit_newline = 0;
|
||||||
|
tok->tok_mode_stack[0] = (tokenizer_mode){.kind =TOK_REGULAR_MODE, .f_string_quote='\0', .f_string_quote_size = 0, .f_string_debug=0};
|
||||||
|
tok->tok_mode_stack_index = 0;
|
||||||
|
#ifdef Py_DEBUG
|
||||||
|
tok->debug = _Py_GetConfig()->parser_debug;
|
||||||
|
#endif
|
||||||
|
return tok;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
free_fstring_expressions(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
int index;
|
||||||
|
tokenizer_mode *mode;
|
||||||
|
|
||||||
|
for (index = tok->tok_mode_stack_index; index >= 0; --index) {
|
||||||
|
mode = &(tok->tok_mode_stack[index]);
|
||||||
|
if (mode->last_expr_buffer != NULL) {
|
||||||
|
PyMem_Free(mode->last_expr_buffer);
|
||||||
|
mode->last_expr_buffer = NULL;
|
||||||
|
mode->last_expr_size = 0;
|
||||||
|
mode->last_expr_end = -1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Free a tok_state structure */
|
||||||
|
void
|
||||||
|
_PyTokenizer_Free(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
if (tok->encoding != NULL) {
|
||||||
|
PyMem_Free(tok->encoding);
|
||||||
|
}
|
||||||
|
Py_XDECREF(tok->decoding_readline);
|
||||||
|
Py_XDECREF(tok->decoding_buffer);
|
||||||
|
Py_XDECREF(tok->readline);
|
||||||
|
Py_XDECREF(tok->filename);
|
||||||
|
if ((tok->readline != NULL || tok->fp != NULL ) && tok->buf != NULL) {
|
||||||
|
PyMem_Free(tok->buf);
|
||||||
|
}
|
||||||
|
if (tok->input) {
|
||||||
|
PyMem_Free(tok->input);
|
||||||
|
}
|
||||||
|
if (tok->interactive_src_start != NULL) {
|
||||||
|
PyMem_Free(tok->interactive_src_start);
|
||||||
|
}
|
||||||
|
free_fstring_expressions(tok);
|
||||||
|
PyMem_Free(tok);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
_PyToken_Free(struct token *token) {
|
||||||
|
Py_XDECREF(token->metadata);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
_PyToken_Init(struct token *token) {
|
||||||
|
token->metadata = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyLexer_type_comment_token_setup(struct tok_state *tok, struct token *token, int type, int col_offset,
|
||||||
|
int end_col_offset, const char *start, const char *end)
|
||||||
|
{
|
||||||
|
token->level = tok->level;
|
||||||
|
token->lineno = token->end_lineno = tok->lineno;
|
||||||
|
token->col_offset = col_offset;
|
||||||
|
token->end_col_offset = end_col_offset;
|
||||||
|
token->start = start;
|
||||||
|
token->end = end;
|
||||||
|
return type;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyLexer_token_setup(struct tok_state *tok, struct token *token, int type, const char *start, const char *end)
|
||||||
|
{
|
||||||
|
assert((start == NULL && end == NULL) || (start != NULL && end != NULL));
|
||||||
|
token->level = tok->level;
|
||||||
|
if (ISSTRINGLIT(type)) {
|
||||||
|
token->lineno = tok->first_lineno;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
token->lineno = tok->lineno;
|
||||||
|
}
|
||||||
|
token->end_lineno = tok->lineno;
|
||||||
|
token->col_offset = token->end_col_offset = -1;
|
||||||
|
token->start = start;
|
||||||
|
token->end = end;
|
||||||
|
|
||||||
|
if (start != NULL && end != NULL) {
|
||||||
|
token->col_offset = tok->starting_col_offset;
|
||||||
|
token->end_col_offset = tok->col_offset;
|
||||||
|
}
|
||||||
|
return type;
|
||||||
|
}
|
|
@ -1,19 +1,15 @@
|
||||||
#ifndef Py_TOKENIZER_H
|
#ifndef _PY_LEXER_H_
|
||||||
#define Py_TOKENIZER_H
|
#define _PY_LEXER_H_
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#include "object.h"
|
#include "object.h"
|
||||||
|
|
||||||
/* Tokenizer interface */
|
|
||||||
|
|
||||||
#include "pycore_token.h" /* For token types */
|
|
||||||
|
|
||||||
#define MAXINDENT 100 /* Max indentation level */
|
#define MAXINDENT 100 /* Max indentation level */
|
||||||
#define MAXLEVEL 200 /* Max parentheses level */
|
#define MAXLEVEL 200 /* Max parentheses level */
|
||||||
#define MAXFSTRINGLEVEL 150 /* Max f-string nesting level */
|
#define MAXFSTRINGLEVEL 150 /* Max f-string nesting level */
|
||||||
|
|
||||||
|
#define INSIDE_FSTRING(tok) (tok->tok_mode_stack_index > 0)
|
||||||
|
#define INSIDE_FSTRING_EXPR(tok) (tok->curly_bracket_expr_start_depth >= 0)
|
||||||
|
|
||||||
enum decoding_state {
|
enum decoding_state {
|
||||||
STATE_INIT,
|
STATE_INIT,
|
||||||
STATE_SEEK_CODING,
|
STATE_SEEK_CODING,
|
||||||
|
@ -118,6 +114,8 @@ struct tok_state {
|
||||||
|
|
||||||
/* How to proceed when asked for a new token in interactive mode */
|
/* How to proceed when asked for a new token in interactive mode */
|
||||||
enum interactive_underflow_t interactive_underflow;
|
enum interactive_underflow_t interactive_underflow;
|
||||||
|
int (*underflow)(struct tok_state *); /* Function to call when buffer is empty and we need to refill it*/
|
||||||
|
|
||||||
int report_warnings;
|
int report_warnings;
|
||||||
// TODO: Factor this into its own thing
|
// TODO: Factor this into its own thing
|
||||||
tokenizer_mode tok_mode_stack[MAXFSTRINGLEVEL];
|
tokenizer_mode tok_mode_stack[MAXFSTRINGLEVEL];
|
||||||
|
@ -130,19 +128,14 @@ struct tok_state {
|
||||||
#endif
|
#endif
|
||||||
};
|
};
|
||||||
|
|
||||||
extern struct tok_state *_PyTokenizer_FromString(const char *, int, int);
|
int _PyLexer_type_comment_token_setup(struct tok_state *tok, struct token *token, int type, int col_offset,
|
||||||
extern struct tok_state *_PyTokenizer_FromUTF8(const char *, int, int);
|
int end_col_offset, const char *start, const char *end);
|
||||||
extern struct tok_state *_PyTokenizer_FromReadline(PyObject*, const char*, int, int);
|
int _PyLexer_token_setup(struct tok_state *tok, struct token *token, int type, const char *start, const char *end);
|
||||||
extern struct tok_state *_PyTokenizer_FromFile(FILE *, const char*,
|
|
||||||
const char *, const char *);
|
struct tok_state *_PyTokenizer_tok_new(void);
|
||||||
extern void _PyTokenizer_Free(struct tok_state *);
|
void _PyTokenizer_Free(struct tok_state *);
|
||||||
extern void _PyToken_Free(struct token *);
|
void _PyToken_Free(struct token *);
|
||||||
extern void _PyToken_Init(struct token *);
|
void _PyToken_Init(struct token *);
|
||||||
extern int _PyTokenizer_Get(struct tok_state *, struct token *);
|
|
||||||
|
|
||||||
#define tok_dump _Py_tok_dump
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
}
|
|
||||||
#endif
|
#endif
|
||||||
#endif /* !Py_TOKENIZER_H */
|
|
|
@ -1,6 +1,5 @@
|
||||||
#include "Python.h"
|
#include "Python.h"
|
||||||
|
|
||||||
#include "tokenizer.h"
|
|
||||||
#include "pegen.h"
|
#include "pegen.h"
|
||||||
|
|
||||||
mod_ty
|
mod_ty
|
||||||
|
|
|
@ -3,7 +3,8 @@
|
||||||
#include "pycore_pystate.h" // _PyThreadState_GET()
|
#include "pycore_pystate.h" // _PyThreadState_GET()
|
||||||
#include <errcode.h>
|
#include <errcode.h>
|
||||||
|
|
||||||
#include "tokenizer.h"
|
#include "lexer/lexer.h"
|
||||||
|
#include "tokenizer/tokenizer.h"
|
||||||
#include "pegen.h"
|
#include "pegen.h"
|
||||||
|
|
||||||
// Internal parser functions
|
// Internal parser functions
|
||||||
|
|
|
@ -2,7 +2,8 @@
|
||||||
#include <errcode.h>
|
#include <errcode.h>
|
||||||
|
|
||||||
#include "pycore_pyerrors.h" // _PyErr_ProgramDecodedTextObject()
|
#include "pycore_pyerrors.h" // _PyErr_ProgramDecodedTextObject()
|
||||||
#include "tokenizer.h"
|
#include "lexer/state.h"
|
||||||
|
#include "lexer/lexer.h"
|
||||||
#include "pegen.h"
|
#include "pegen.h"
|
||||||
|
|
||||||
// TOKENIZER ERRORS
|
// TOKENIZER ERRORS
|
||||||
|
|
|
@ -4,7 +4,7 @@
|
||||||
#include "pycore_bytesobject.h" // _PyBytes_DecodeEscape()
|
#include "pycore_bytesobject.h" // _PyBytes_DecodeEscape()
|
||||||
#include "pycore_unicodeobject.h" // _PyUnicode_DecodeUnicodeEscapeInternal()
|
#include "pycore_unicodeobject.h" // _PyUnicode_DecodeUnicodeEscapeInternal()
|
||||||
|
|
||||||
#include "tokenizer.h"
|
#include "lexer/state.h"
|
||||||
#include "pegen.h"
|
#include "pegen.h"
|
||||||
#include "string_parser.h"
|
#include "string_parser.h"
|
||||||
|
|
||||||
|
|
2951
Parser/tokenizer.c
2951
Parser/tokenizer.c
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1,470 @@
|
||||||
|
#ifdef HAVE_UNISTD_H
|
||||||
|
# include <unistd.h> // read()
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include "Python.h"
|
||||||
|
#include "pycore_call.h"
|
||||||
|
#include "pycore_import.h"
|
||||||
|
#include "pycore_fileutils.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "helpers.h"
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
#include "../lexer/lexer.h"
|
||||||
|
#include "../lexer/buffer.h"
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_concatenate_interactive_new_line(struct tok_state *tok, const char *line) {
|
||||||
|
assert(tok->fp_interactive);
|
||||||
|
|
||||||
|
if (!line) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
Py_ssize_t current_size = tok->interactive_src_end - tok->interactive_src_start;
|
||||||
|
Py_ssize_t line_size = strlen(line);
|
||||||
|
char last_char = line[line_size > 0 ? line_size - 1 : line_size];
|
||||||
|
if (last_char != '\n') {
|
||||||
|
line_size += 1;
|
||||||
|
}
|
||||||
|
char* new_str = tok->interactive_src_start;
|
||||||
|
|
||||||
|
new_str = PyMem_Realloc(new_str, current_size + line_size + 1);
|
||||||
|
if (!new_str) {
|
||||||
|
if (tok->interactive_src_start) {
|
||||||
|
PyMem_Free(tok->interactive_src_start);
|
||||||
|
}
|
||||||
|
tok->interactive_src_start = NULL;
|
||||||
|
tok->interactive_src_end = NULL;
|
||||||
|
tok->done = E_NOMEM;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
strcpy(new_str + current_size, line);
|
||||||
|
tok->implicit_newline = 0;
|
||||||
|
if (last_char != '\n') {
|
||||||
|
/* Last line does not end in \n, fake one */
|
||||||
|
new_str[current_size + line_size - 1] = '\n';
|
||||||
|
new_str[current_size + line_size] = '\0';
|
||||||
|
tok->implicit_newline = 1;
|
||||||
|
}
|
||||||
|
tok->interactive_src_start = new_str;
|
||||||
|
tok->interactive_src_end = new_str + current_size + line_size;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_readline_raw(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
do {
|
||||||
|
if (!_PyLexer_tok_reserve_buf(tok, BUFSIZ)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
int n_chars = (int)(tok->end - tok->inp);
|
||||||
|
size_t line_size = 0;
|
||||||
|
char *line = _Py_UniversalNewlineFgetsWithSize(tok->inp, n_chars, tok->fp, NULL, &line_size);
|
||||||
|
if (line == NULL) {
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
if (tok->fp_interactive &&
|
||||||
|
tok_concatenate_interactive_new_line(tok, line) == -1) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
tok->inp += line_size;
|
||||||
|
if (tok->inp == tok->buf) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
} while (tok->inp[-1] != '\n');
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_readline_recode(struct tok_state *tok) {
|
||||||
|
PyObject *line;
|
||||||
|
const char *buf;
|
||||||
|
Py_ssize_t buflen;
|
||||||
|
line = tok->decoding_buffer;
|
||||||
|
if (line == NULL) {
|
||||||
|
line = PyObject_CallNoArgs(tok->decoding_readline);
|
||||||
|
if (line == NULL) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
tok->decoding_buffer = NULL;
|
||||||
|
}
|
||||||
|
buf = PyUnicode_AsUTF8AndSize(line, &buflen);
|
||||||
|
if (buf == NULL) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
// Make room for the null terminator *and* potentially
|
||||||
|
// an extra newline character that we may need to artificially
|
||||||
|
// add.
|
||||||
|
size_t buffer_size = buflen + 2;
|
||||||
|
if (!_PyLexer_tok_reserve_buf(tok, buffer_size)) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
memcpy(tok->inp, buf, buflen);
|
||||||
|
tok->inp += buflen;
|
||||||
|
*tok->inp = '\0';
|
||||||
|
if (tok->fp_interactive &&
|
||||||
|
tok_concatenate_interactive_new_line(tok, buf) == -1) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
Py_DECREF(line);
|
||||||
|
return 1;
|
||||||
|
error:
|
||||||
|
Py_XDECREF(line);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Fetch the next byte from TOK. */
|
||||||
|
static int fp_getc(struct tok_state *tok) {
|
||||||
|
return getc(tok->fp);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Unfetch the last byte back into TOK. */
|
||||||
|
static void fp_ungetc(int c, struct tok_state *tok) {
|
||||||
|
ungetc(c, tok->fp);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set the readline function for TOK to a StreamReader's
|
||||||
|
readline function. The StreamReader is named ENC.
|
||||||
|
|
||||||
|
This function is called from _PyTokenizer_check_bom and _PyTokenizer_check_coding_spec.
|
||||||
|
|
||||||
|
ENC is usually identical to the future value of tok->encoding,
|
||||||
|
except for the (currently unsupported) case of UTF-16.
|
||||||
|
|
||||||
|
Return 1 on success, 0 on failure. */
|
||||||
|
static int
|
||||||
|
fp_setreadl(struct tok_state *tok, const char* enc)
|
||||||
|
{
|
||||||
|
PyObject *readline, *open, *stream;
|
||||||
|
int fd;
|
||||||
|
long pos;
|
||||||
|
|
||||||
|
fd = fileno(tok->fp);
|
||||||
|
/* Due to buffering the file offset for fd can be different from the file
|
||||||
|
* position of tok->fp. If tok->fp was opened in text mode on Windows,
|
||||||
|
* its file position counts CRLF as one char and can't be directly mapped
|
||||||
|
* to the file offset for fd. Instead we step back one byte and read to
|
||||||
|
* the end of line.*/
|
||||||
|
pos = ftell(tok->fp);
|
||||||
|
if (pos == -1 ||
|
||||||
|
lseek(fd, (off_t)(pos > 0 ? pos - 1 : pos), SEEK_SET) == (off_t)-1) {
|
||||||
|
PyErr_SetFromErrnoWithFilename(PyExc_OSError, NULL);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
open = _PyImport_GetModuleAttrString("io", "open");
|
||||||
|
if (open == NULL) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
stream = PyObject_CallFunction(open, "isisOOO",
|
||||||
|
fd, "r", -1, enc, Py_None, Py_None, Py_False);
|
||||||
|
Py_DECREF(open);
|
||||||
|
if (stream == NULL) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
readline = PyObject_GetAttr(stream, &_Py_ID(readline));
|
||||||
|
Py_DECREF(stream);
|
||||||
|
if (readline == NULL) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
Py_XSETREF(tok->decoding_readline, readline);
|
||||||
|
|
||||||
|
if (pos > 0) {
|
||||||
|
PyObject *bufobj = _PyObject_CallNoArgs(readline);
|
||||||
|
if (bufobj == NULL) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
Py_DECREF(bufobj);
|
||||||
|
}
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_underflow_interactive(struct tok_state *tok) {
|
||||||
|
if (tok->interactive_underflow == IUNDERFLOW_STOP) {
|
||||||
|
tok->done = E_INTERACT_STOP;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
char *newtok = PyOS_Readline(tok->fp ? tok->fp : stdin, stdout, tok->prompt);
|
||||||
|
if (newtok != NULL) {
|
||||||
|
char *translated = _PyTokenizer_translate_newlines(newtok, 0, 0, tok);
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
if (translated == NULL) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
newtok = translated;
|
||||||
|
}
|
||||||
|
if (tok->encoding && newtok && *newtok) {
|
||||||
|
/* Recode to UTF-8 */
|
||||||
|
Py_ssize_t buflen;
|
||||||
|
const char* buf;
|
||||||
|
PyObject *u = _PyTokenizer_translate_into_utf8(newtok, tok->encoding);
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
if (u == NULL) {
|
||||||
|
tok->done = E_DECODE;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
buflen = PyBytes_GET_SIZE(u);
|
||||||
|
buf = PyBytes_AS_STRING(u);
|
||||||
|
newtok = PyMem_Malloc(buflen+1);
|
||||||
|
if (newtok == NULL) {
|
||||||
|
Py_DECREF(u);
|
||||||
|
tok->done = E_NOMEM;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
strcpy(newtok, buf);
|
||||||
|
Py_DECREF(u);
|
||||||
|
}
|
||||||
|
if (tok->fp_interactive &&
|
||||||
|
tok_concatenate_interactive_new_line(tok, newtok) == -1) {
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
if (tok->nextprompt != NULL) {
|
||||||
|
tok->prompt = tok->nextprompt;
|
||||||
|
}
|
||||||
|
if (newtok == NULL) {
|
||||||
|
tok->done = E_INTR;
|
||||||
|
}
|
||||||
|
else if (*newtok == '\0') {
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
tok->done = E_EOF;
|
||||||
|
}
|
||||||
|
else if (tok->start != NULL) {
|
||||||
|
Py_ssize_t cur_multi_line_start = tok->multi_line_start - tok->buf;
|
||||||
|
_PyLexer_remember_fstring_buffers(tok);
|
||||||
|
size_t size = strlen(newtok);
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
if (!_PyLexer_tok_reserve_buf(tok, size + 1)) {
|
||||||
|
PyMem_Free(tok->buf);
|
||||||
|
tok->buf = NULL;
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
memcpy(tok->cur, newtok, size + 1);
|
||||||
|
PyMem_Free(newtok);
|
||||||
|
tok->inp += size;
|
||||||
|
tok->multi_line_start = tok->buf + cur_multi_line_start;
|
||||||
|
_PyLexer_restore_fstring_buffers(tok);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
_PyLexer_remember_fstring_buffers(tok);
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
PyMem_Free(tok->buf);
|
||||||
|
tok->buf = newtok;
|
||||||
|
tok->cur = tok->buf;
|
||||||
|
tok->line_start = tok->buf;
|
||||||
|
tok->inp = strchr(tok->buf, '\0');
|
||||||
|
tok->end = tok->inp + 1;
|
||||||
|
_PyLexer_restore_fstring_buffers(tok);
|
||||||
|
}
|
||||||
|
if (tok->done != E_OK) {
|
||||||
|
if (tok->prompt != NULL) {
|
||||||
|
PySys_WriteStderr("\n");
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_underflow_file(struct tok_state *tok) {
|
||||||
|
if (tok->start == NULL && !INSIDE_FSTRING(tok)) {
|
||||||
|
tok->cur = tok->inp = tok->buf;
|
||||||
|
}
|
||||||
|
if (tok->decoding_state == STATE_INIT) {
|
||||||
|
/* We have not yet determined the encoding.
|
||||||
|
If an encoding is found, use the file-pointer
|
||||||
|
reader functions from now on. */
|
||||||
|
if (!_PyTokenizer_check_bom(fp_getc, fp_ungetc, fp_setreadl, tok)) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
assert(tok->decoding_state != STATE_INIT);
|
||||||
|
}
|
||||||
|
/* Read until '\n' or EOF */
|
||||||
|
if (tok->decoding_readline != NULL) {
|
||||||
|
/* We already have a codec associated with this input. */
|
||||||
|
if (!tok_readline_recode(tok)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
/* We want a 'raw' read. */
|
||||||
|
if (!tok_readline_raw(tok)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (tok->inp == tok->cur) {
|
||||||
|
tok->done = E_EOF;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
tok->implicit_newline = 0;
|
||||||
|
if (tok->inp[-1] != '\n') {
|
||||||
|
assert(tok->inp + 1 < tok->end);
|
||||||
|
/* Last line does not end in \n, fake one */
|
||||||
|
*tok->inp++ = '\n';
|
||||||
|
*tok->inp = '\0';
|
||||||
|
tok->implicit_newline = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
if (tok->decoding_state != STATE_NORMAL) {
|
||||||
|
if (tok->lineno > 2) {
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
}
|
||||||
|
else if (!_PyTokenizer_check_coding_spec(tok->cur, strlen(tok->cur),
|
||||||
|
tok, fp_setreadl))
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
/* The default encoding is UTF-8, so make sure we don't have any
|
||||||
|
non-UTF-8 sequences in it. */
|
||||||
|
if (!tok->encoding && !_PyTokenizer_ensure_utf8(tok->cur, tok)) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
assert(tok->done == E_OK);
|
||||||
|
return tok->done == E_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set up tokenizer for file */
|
||||||
|
struct tok_state *
|
||||||
|
_PyTokenizer_FromFile(FILE *fp, const char* enc,
|
||||||
|
const char *ps1, const char *ps2)
|
||||||
|
{
|
||||||
|
struct tok_state *tok = _PyTokenizer_tok_new();
|
||||||
|
if (tok == NULL)
|
||||||
|
return NULL;
|
||||||
|
if ((tok->buf = (char *)PyMem_Malloc(BUFSIZ)) == NULL) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tok->cur = tok->inp = tok->buf;
|
||||||
|
tok->end = tok->buf + BUFSIZ;
|
||||||
|
tok->fp = fp;
|
||||||
|
tok->prompt = ps1;
|
||||||
|
tok->nextprompt = ps2;
|
||||||
|
if (ps1 || ps2) {
|
||||||
|
tok->underflow = &tok_underflow_interactive;
|
||||||
|
} else {
|
||||||
|
tok->underflow = &tok_underflow_file;
|
||||||
|
}
|
||||||
|
if (enc != NULL) {
|
||||||
|
/* Must copy encoding declaration since it
|
||||||
|
gets copied into the parse tree. */
|
||||||
|
tok->encoding = _PyTokenizer_new_string(enc, strlen(enc), tok);
|
||||||
|
if (!tok->encoding) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
}
|
||||||
|
return tok;
|
||||||
|
}
|
||||||
|
|
||||||
|
#if defined(__wasi__) || (defined(__EMSCRIPTEN__) && (__EMSCRIPTEN_major__ >= 3))
|
||||||
|
// fdopen() with borrowed fd. WASI does not provide dup() and Emscripten's
|
||||||
|
// dup() emulation with open() is slow.
|
||||||
|
typedef union {
|
||||||
|
void *cookie;
|
||||||
|
int fd;
|
||||||
|
} borrowed;
|
||||||
|
|
||||||
|
static ssize_t
|
||||||
|
borrow_read(void *cookie, char *buf, size_t size)
|
||||||
|
{
|
||||||
|
borrowed b = {.cookie = cookie};
|
||||||
|
return read(b.fd, (void *)buf, size);
|
||||||
|
}
|
||||||
|
|
||||||
|
static FILE *
|
||||||
|
fdopen_borrow(int fd) {
|
||||||
|
// supports only reading. seek fails. close and write are no-ops.
|
||||||
|
cookie_io_functions_t io_cb = {borrow_read, NULL, NULL, NULL};
|
||||||
|
borrowed b = {.fd = fd};
|
||||||
|
return fopencookie(b.cookie, "r", io_cb);
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
static FILE *
|
||||||
|
fdopen_borrow(int fd) {
|
||||||
|
fd = _Py_dup(fd);
|
||||||
|
if (fd < 0) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
return fdopen(fd, "r");
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Get the encoding of a Python file. Check for the coding cookie and check if
|
||||||
|
the file starts with a BOM.
|
||||||
|
|
||||||
|
_PyTokenizer_FindEncodingFilename() returns NULL when it can't find the
|
||||||
|
encoding in the first or second line of the file (in which case the encoding
|
||||||
|
should be assumed to be UTF-8).
|
||||||
|
|
||||||
|
The char* returned is malloc'ed via PyMem_Malloc() and thus must be freed
|
||||||
|
by the caller. */
|
||||||
|
char *
|
||||||
|
_PyTokenizer_FindEncodingFilename(int fd, PyObject *filename)
|
||||||
|
{
|
||||||
|
struct tok_state *tok;
|
||||||
|
FILE *fp;
|
||||||
|
char *encoding = NULL;
|
||||||
|
|
||||||
|
fp = fdopen_borrow(fd);
|
||||||
|
if (fp == NULL) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tok = _PyTokenizer_FromFile(fp, NULL, NULL, NULL);
|
||||||
|
if (tok == NULL) {
|
||||||
|
fclose(fp);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
if (filename != NULL) {
|
||||||
|
tok->filename = Py_NewRef(filename);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
tok->filename = PyUnicode_FromString("<string>");
|
||||||
|
if (tok->filename == NULL) {
|
||||||
|
fclose(fp);
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return encoding;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
struct token token;
|
||||||
|
// We don't want to report warnings here because it could cause infinite recursion
|
||||||
|
// if fetching the encoding shows a warning.
|
||||||
|
tok->report_warnings = 0;
|
||||||
|
while (tok->lineno < 2 && tok->done == E_OK) {
|
||||||
|
_PyToken_Init(&token);
|
||||||
|
_PyTokenizer_Get(tok, &token);
|
||||||
|
_PyToken_Free(&token);
|
||||||
|
}
|
||||||
|
fclose(fp);
|
||||||
|
if (tok->encoding) {
|
||||||
|
encoding = (char *)PyMem_Malloc(strlen(tok->encoding) + 1);
|
||||||
|
if (encoding) {
|
||||||
|
strcpy(encoding, tok->encoding);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return encoding;
|
||||||
|
}
|
|
@ -0,0 +1,552 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
#include "pycore_token.h"
|
||||||
|
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
|
||||||
|
|
||||||
|
/* ############## ERRORS ############## */
|
||||||
|
|
||||||
|
static int
|
||||||
|
_syntaxerror_range(struct tok_state *tok, const char *format,
|
||||||
|
int col_offset, int end_col_offset,
|
||||||
|
va_list vargs)
|
||||||
|
{
|
||||||
|
// In release builds, we don't want to overwrite a previous error, but in debug builds we
|
||||||
|
// want to fail if we are not doing it so we can fix it.
|
||||||
|
assert(tok->done != E_ERROR);
|
||||||
|
if (tok->done == E_ERROR) {
|
||||||
|
return ERRORTOKEN;
|
||||||
|
}
|
||||||
|
PyObject *errmsg, *errtext, *args;
|
||||||
|
errmsg = PyUnicode_FromFormatV(format, vargs);
|
||||||
|
if (!errmsg) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
errtext = PyUnicode_DecodeUTF8(tok->line_start, tok->cur - tok->line_start,
|
||||||
|
"replace");
|
||||||
|
if (!errtext) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (col_offset == -1) {
|
||||||
|
col_offset = (int)PyUnicode_GET_LENGTH(errtext);
|
||||||
|
}
|
||||||
|
if (end_col_offset == -1) {
|
||||||
|
end_col_offset = col_offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
Py_ssize_t line_len = strcspn(tok->line_start, "\n");
|
||||||
|
if (line_len != tok->cur - tok->line_start) {
|
||||||
|
Py_DECREF(errtext);
|
||||||
|
errtext = PyUnicode_DecodeUTF8(tok->line_start, line_len,
|
||||||
|
"replace");
|
||||||
|
}
|
||||||
|
if (!errtext) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
args = Py_BuildValue("(O(OiiNii))", errmsg, tok->filename, tok->lineno,
|
||||||
|
col_offset, errtext, tok->lineno, end_col_offset);
|
||||||
|
if (args) {
|
||||||
|
PyErr_SetObject(PyExc_SyntaxError, args);
|
||||||
|
Py_DECREF(args);
|
||||||
|
}
|
||||||
|
|
||||||
|
error:
|
||||||
|
Py_XDECREF(errmsg);
|
||||||
|
tok->done = E_ERROR;
|
||||||
|
return ERRORTOKEN;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_syntaxerror(struct tok_state *tok, const char *format, ...)
|
||||||
|
{
|
||||||
|
// This errors are cleaned on startup. Todo: Fix it.
|
||||||
|
va_list vargs;
|
||||||
|
va_start(vargs, format);
|
||||||
|
int ret = _syntaxerror_range(tok, format, -1, -1, vargs);
|
||||||
|
va_end(vargs);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_syntaxerror_known_range(struct tok_state *tok,
|
||||||
|
int col_offset, int end_col_offset,
|
||||||
|
const char *format, ...)
|
||||||
|
{
|
||||||
|
va_list vargs;
|
||||||
|
va_start(vargs, format);
|
||||||
|
int ret = _syntaxerror_range(tok, format, col_offset, end_col_offset, vargs);
|
||||||
|
va_end(vargs);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_indenterror(struct tok_state *tok)
|
||||||
|
{
|
||||||
|
tok->done = E_TABSPACE;
|
||||||
|
tok->cur = tok->inp;
|
||||||
|
return ERRORTOKEN;
|
||||||
|
}
|
||||||
|
|
||||||
|
char *
|
||||||
|
_PyTokenizer_error_ret(struct tok_state *tok) /* XXX */
|
||||||
|
{
|
||||||
|
tok->decoding_erred = 1;
|
||||||
|
if ((tok->fp != NULL || tok->readline != NULL) && tok->buf != NULL) {/* see _PyTokenizer_Free */
|
||||||
|
PyMem_Free(tok->buf);
|
||||||
|
}
|
||||||
|
tok->buf = tok->cur = tok->inp = NULL;
|
||||||
|
tok->start = NULL;
|
||||||
|
tok->end = NULL;
|
||||||
|
tok->done = E_DECODE;
|
||||||
|
return NULL; /* as if it were EOF */
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char)
|
||||||
|
{
|
||||||
|
if (!tok->report_warnings) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
PyObject *msg = PyUnicode_FromFormat(
|
||||||
|
"invalid escape sequence '\\%c'",
|
||||||
|
(char) first_invalid_escape_char
|
||||||
|
);
|
||||||
|
|
||||||
|
if (msg == NULL) {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg, tok->filename,
|
||||||
|
tok->lineno, NULL, NULL) < 0) {
|
||||||
|
Py_DECREF(msg);
|
||||||
|
|
||||||
|
if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
|
||||||
|
/* Replace the SyntaxWarning exception with a SyntaxError
|
||||||
|
to get a more accurate error report */
|
||||||
|
PyErr_Clear();
|
||||||
|
return _PyTokenizer_syntaxerror(tok, "invalid escape sequence '\\%c'", (char) first_invalid_escape_char);
|
||||||
|
}
|
||||||
|
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
Py_DECREF(msg);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...)
|
||||||
|
{
|
||||||
|
if (!tok->report_warnings) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
PyObject *errmsg;
|
||||||
|
va_list vargs;
|
||||||
|
va_start(vargs, format);
|
||||||
|
errmsg = PyUnicode_FromFormatV(format, vargs);
|
||||||
|
va_end(vargs);
|
||||||
|
if (!errmsg) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (PyErr_WarnExplicitObject(category, errmsg, tok->filename,
|
||||||
|
tok->lineno, NULL, NULL) < 0) {
|
||||||
|
if (PyErr_ExceptionMatches(category)) {
|
||||||
|
/* Replace the DeprecationWarning exception with a SyntaxError
|
||||||
|
to get a more accurate error report */
|
||||||
|
PyErr_Clear();
|
||||||
|
_PyTokenizer_syntaxerror(tok, "%U", errmsg);
|
||||||
|
}
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
Py_DECREF(errmsg);
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
error:
|
||||||
|
Py_XDECREF(errmsg);
|
||||||
|
tok->done = E_ERROR;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* ############## STRING MANIPULATION ############## */
|
||||||
|
|
||||||
|
char *
|
||||||
|
_PyTokenizer_new_string(const char *s, Py_ssize_t len, struct tok_state *tok)
|
||||||
|
{
|
||||||
|
char* result = (char *)PyMem_Malloc(len + 1);
|
||||||
|
if (!result) {
|
||||||
|
tok->done = E_NOMEM;
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
memcpy(result, s, len);
|
||||||
|
result[len] = '\0';
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
PyObject *
|
||||||
|
_PyTokenizer_translate_into_utf8(const char* str, const char* enc) {
|
||||||
|
PyObject *utf8;
|
||||||
|
PyObject* buf = PyUnicode_Decode(str, strlen(str), enc, NULL);
|
||||||
|
if (buf == NULL)
|
||||||
|
return NULL;
|
||||||
|
utf8 = PyUnicode_AsUTF8String(buf);
|
||||||
|
Py_DECREF(buf);
|
||||||
|
return utf8;
|
||||||
|
}
|
||||||
|
|
||||||
|
char *
|
||||||
|
_PyTokenizer_translate_newlines(const char *s, int exec_input, int preserve_crlf,
|
||||||
|
struct tok_state *tok) {
|
||||||
|
int skip_next_lf = 0;
|
||||||
|
size_t needed_length = strlen(s) + 2, final_length;
|
||||||
|
char *buf, *current;
|
||||||
|
char c = '\0';
|
||||||
|
buf = PyMem_Malloc(needed_length);
|
||||||
|
if (buf == NULL) {
|
||||||
|
tok->done = E_NOMEM;
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
for (current = buf; *s; s++, current++) {
|
||||||
|
c = *s;
|
||||||
|
if (skip_next_lf) {
|
||||||
|
skip_next_lf = 0;
|
||||||
|
if (c == '\n') {
|
||||||
|
c = *++s;
|
||||||
|
if (!c)
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (!preserve_crlf && c == '\r') {
|
||||||
|
skip_next_lf = 1;
|
||||||
|
c = '\n';
|
||||||
|
}
|
||||||
|
*current = c;
|
||||||
|
}
|
||||||
|
/* If this is exec input, add a newline to the end of the string if
|
||||||
|
there isn't one already. */
|
||||||
|
if (exec_input && c != '\n' && c != '\0') {
|
||||||
|
*current = '\n';
|
||||||
|
current++;
|
||||||
|
}
|
||||||
|
*current = '\0';
|
||||||
|
final_length = current - buf + 1;
|
||||||
|
if (final_length < needed_length && final_length) {
|
||||||
|
/* should never fail */
|
||||||
|
char* result = PyMem_Realloc(buf, final_length);
|
||||||
|
if (result == NULL) {
|
||||||
|
PyMem_Free(buf);
|
||||||
|
}
|
||||||
|
buf = result;
|
||||||
|
}
|
||||||
|
return buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ############## ENCODING STUFF ############## */
|
||||||
|
|
||||||
|
|
||||||
|
/* See whether the file starts with a BOM. If it does,
|
||||||
|
invoke the set_readline function with the new encoding.
|
||||||
|
Return 1 on success, 0 on failure. */
|
||||||
|
int
|
||||||
|
_PyTokenizer_check_bom(int get_char(struct tok_state *),
|
||||||
|
void unget_char(int, struct tok_state *),
|
||||||
|
int set_readline(struct tok_state *, const char *),
|
||||||
|
struct tok_state *tok)
|
||||||
|
{
|
||||||
|
int ch1, ch2, ch3;
|
||||||
|
ch1 = get_char(tok);
|
||||||
|
tok->decoding_state = STATE_SEEK_CODING;
|
||||||
|
if (ch1 == EOF) {
|
||||||
|
return 1;
|
||||||
|
} else if (ch1 == 0xEF) {
|
||||||
|
ch2 = get_char(tok);
|
||||||
|
if (ch2 != 0xBB) {
|
||||||
|
unget_char(ch2, tok);
|
||||||
|
unget_char(ch1, tok);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
ch3 = get_char(tok);
|
||||||
|
if (ch3 != 0xBF) {
|
||||||
|
unget_char(ch3, tok);
|
||||||
|
unget_char(ch2, tok);
|
||||||
|
unget_char(ch1, tok);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
unget_char(ch1, tok);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
if (tok->encoding != NULL)
|
||||||
|
PyMem_Free(tok->encoding);
|
||||||
|
tok->encoding = _PyTokenizer_new_string("utf-8", 5, tok);
|
||||||
|
if (!tok->encoding)
|
||||||
|
return 0;
|
||||||
|
/* No need to set_readline: input is already utf-8 */
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static const char *
|
||||||
|
get_normal_name(const char *s) /* for utf-8 and latin-1 */
|
||||||
|
{
|
||||||
|
char buf[13];
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < 12; i++) {
|
||||||
|
int c = s[i];
|
||||||
|
if (c == '\0')
|
||||||
|
break;
|
||||||
|
else if (c == '_')
|
||||||
|
buf[i] = '-';
|
||||||
|
else
|
||||||
|
buf[i] = Py_TOLOWER(c);
|
||||||
|
}
|
||||||
|
buf[i] = '\0';
|
||||||
|
if (strcmp(buf, "utf-8") == 0 ||
|
||||||
|
strncmp(buf, "utf-8-", 6) == 0)
|
||||||
|
return "utf-8";
|
||||||
|
else if (strcmp(buf, "latin-1") == 0 ||
|
||||||
|
strcmp(buf, "iso-8859-1") == 0 ||
|
||||||
|
strcmp(buf, "iso-latin-1") == 0 ||
|
||||||
|
strncmp(buf, "latin-1-", 8) == 0 ||
|
||||||
|
strncmp(buf, "iso-8859-1-", 11) == 0 ||
|
||||||
|
strncmp(buf, "iso-latin-1-", 12) == 0)
|
||||||
|
return "iso-8859-1";
|
||||||
|
else
|
||||||
|
return s;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Return the coding spec in S, or NULL if none is found. */
|
||||||
|
static int
|
||||||
|
get_coding_spec(const char *s, char **spec, Py_ssize_t size, struct tok_state *tok)
|
||||||
|
{
|
||||||
|
Py_ssize_t i;
|
||||||
|
*spec = NULL;
|
||||||
|
/* Coding spec must be in a comment, and that comment must be
|
||||||
|
* the only statement on the source code line. */
|
||||||
|
for (i = 0; i < size - 6; i++) {
|
||||||
|
if (s[i] == '#')
|
||||||
|
break;
|
||||||
|
if (s[i] != ' ' && s[i] != '\t' && s[i] != '\014')
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
for (; i < size - 6; i++) { /* XXX inefficient search */
|
||||||
|
const char* t = s + i;
|
||||||
|
if (memcmp(t, "coding", 6) == 0) {
|
||||||
|
const char* begin = NULL;
|
||||||
|
t += 6;
|
||||||
|
if (t[0] != ':' && t[0] != '=')
|
||||||
|
continue;
|
||||||
|
do {
|
||||||
|
t++;
|
||||||
|
} while (t[0] == ' ' || t[0] == '\t');
|
||||||
|
|
||||||
|
begin = t;
|
||||||
|
while (Py_ISALNUM(t[0]) ||
|
||||||
|
t[0] == '-' || t[0] == '_' || t[0] == '.')
|
||||||
|
t++;
|
||||||
|
|
||||||
|
if (begin < t) {
|
||||||
|
char* r = _PyTokenizer_new_string(begin, t - begin, tok);
|
||||||
|
const char* q;
|
||||||
|
if (!r)
|
||||||
|
return 0;
|
||||||
|
q = get_normal_name(r);
|
||||||
|
if (r != q) {
|
||||||
|
PyMem_Free(r);
|
||||||
|
r = _PyTokenizer_new_string(q, strlen(q), tok);
|
||||||
|
if (!r)
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
*spec = r;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check whether the line contains a coding spec. If it does,
|
||||||
|
invoke the set_readline function for the new encoding.
|
||||||
|
This function receives the tok_state and the new encoding.
|
||||||
|
Return 1 on success, 0 on failure. */
|
||||||
|
int
|
||||||
|
_PyTokenizer_check_coding_spec(const char* line, Py_ssize_t size, struct tok_state *tok,
|
||||||
|
int set_readline(struct tok_state *, const char *))
|
||||||
|
{
|
||||||
|
char *cs;
|
||||||
|
if (tok->cont_line) {
|
||||||
|
/* It's a continuation line, so it can't be a coding spec. */
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
if (!get_coding_spec(line, &cs, size, tok)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
if (!cs) {
|
||||||
|
Py_ssize_t i;
|
||||||
|
for (i = 0; i < size; i++) {
|
||||||
|
if (line[i] == '#' || line[i] == '\n' || line[i] == '\r')
|
||||||
|
break;
|
||||||
|
if (line[i] != ' ' && line[i] != '\t' && line[i] != '\014') {
|
||||||
|
/* Stop checking coding spec after a line containing
|
||||||
|
* anything except a comment. */
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
if (tok->encoding == NULL) {
|
||||||
|
assert(tok->decoding_readline == NULL);
|
||||||
|
if (strcmp(cs, "utf-8") != 0 && !set_readline(tok, cs)) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
PyErr_Format(PyExc_SyntaxError, "encoding problem: %s", cs);
|
||||||
|
PyMem_Free(cs);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
tok->encoding = cs;
|
||||||
|
} else { /* then, compare cs with BOM */
|
||||||
|
if (strcmp(tok->encoding, cs) != 0) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
PyErr_Format(PyExc_SyntaxError,
|
||||||
|
"encoding problem: %s with BOM", cs);
|
||||||
|
PyMem_Free(cs);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
PyMem_Free(cs);
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check whether the characters at s start a valid
|
||||||
|
UTF-8 sequence. Return the number of characters forming
|
||||||
|
the sequence if yes, 0 if not. The special cases match
|
||||||
|
those in stringlib/codecs.h:utf8_decode.
|
||||||
|
*/
|
||||||
|
static int
|
||||||
|
valid_utf8(const unsigned char* s)
|
||||||
|
{
|
||||||
|
int expected = 0;
|
||||||
|
int length;
|
||||||
|
if (*s < 0x80) {
|
||||||
|
/* single-byte code */
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
else if (*s < 0xE0) {
|
||||||
|
/* \xC2\x80-\xDF\xBF -- 0080-07FF */
|
||||||
|
if (*s < 0xC2) {
|
||||||
|
/* invalid sequence
|
||||||
|
\x80-\xBF -- continuation byte
|
||||||
|
\xC0-\xC1 -- fake 0000-007F */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
expected = 1;
|
||||||
|
}
|
||||||
|
else if (*s < 0xF0) {
|
||||||
|
/* \xE0\xA0\x80-\xEF\xBF\xBF -- 0800-FFFF */
|
||||||
|
if (*s == 0xE0 && *(s + 1) < 0xA0) {
|
||||||
|
/* invalid sequence
|
||||||
|
\xE0\x80\x80-\xE0\x9F\xBF -- fake 0000-0800 */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
else if (*s == 0xED && *(s + 1) >= 0xA0) {
|
||||||
|
/* Decoding UTF-8 sequences in range \xED\xA0\x80-\xED\xBF\xBF
|
||||||
|
will result in surrogates in range D800-DFFF. Surrogates are
|
||||||
|
not valid UTF-8 so they are rejected.
|
||||||
|
See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf
|
||||||
|
(table 3-7) and http://www.rfc-editor.org/rfc/rfc3629.txt */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
expected = 2;
|
||||||
|
}
|
||||||
|
else if (*s < 0xF5) {
|
||||||
|
/* \xF0\x90\x80\x80-\xF4\x8F\xBF\xBF -- 10000-10FFFF */
|
||||||
|
if (*(s + 1) < 0x90 ? *s == 0xF0 : *s == 0xF4) {
|
||||||
|
/* invalid sequence -- one of:
|
||||||
|
\xF0\x80\x80\x80-\xF0\x8F\xBF\xBF -- fake 0000-FFFF
|
||||||
|
\xF4\x90\x80\x80- -- 110000- overflow */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
expected = 3;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
/* invalid start byte */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
length = expected + 1;
|
||||||
|
for (; expected; expected--)
|
||||||
|
if (s[expected] < 0x80 || s[expected] >= 0xC0)
|
||||||
|
return 0;
|
||||||
|
return length;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
_PyTokenizer_ensure_utf8(char *line, struct tok_state *tok)
|
||||||
|
{
|
||||||
|
int badchar = 0;
|
||||||
|
unsigned char *c;
|
||||||
|
int length;
|
||||||
|
for (c = (unsigned char *)line; *c; c += length) {
|
||||||
|
if (!(length = valid_utf8(c))) {
|
||||||
|
badchar = *c;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (badchar) {
|
||||||
|
PyErr_Format(PyExc_SyntaxError,
|
||||||
|
"Non-UTF-8 code starting with '\\x%.2x' "
|
||||||
|
"in file %U on line %i, "
|
||||||
|
"but no encoding declared; "
|
||||||
|
"see https://peps.python.org/pep-0263/ for details",
|
||||||
|
badchar, tok->filename, tok->lineno);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* ############## DEBUGGING STUFF ############## */
|
||||||
|
|
||||||
|
#ifdef Py_DEBUG
|
||||||
|
void
|
||||||
|
_PyTokenizer_print_escape(FILE *f, const char *s, Py_ssize_t size)
|
||||||
|
{
|
||||||
|
if (s == NULL) {
|
||||||
|
fputs("NULL", f);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
putc('"', f);
|
||||||
|
while (size-- > 0) {
|
||||||
|
unsigned char c = *s++;
|
||||||
|
switch (c) {
|
||||||
|
case '\n': fputs("\\n", f); break;
|
||||||
|
case '\r': fputs("\\r", f); break;
|
||||||
|
case '\t': fputs("\\t", f); break;
|
||||||
|
case '\f': fputs("\\f", f); break;
|
||||||
|
case '\'': fputs("\\'", f); break;
|
||||||
|
case '"': fputs("\\\"", f); break;
|
||||||
|
default:
|
||||||
|
if (0x20 <= c && c <= 0x7f)
|
||||||
|
putc(c, f);
|
||||||
|
else
|
||||||
|
fprintf(f, "\\x%02x", c);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
putc('"', f);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
_PyTokenizer_tok_dump(int type, char *start, char *end)
|
||||||
|
{
|
||||||
|
fprintf(stderr, "%s", _PyParser_TokenNames[type]);
|
||||||
|
if (type == NAME || type == NUMBER || type == STRING || type == OP)
|
||||||
|
fprintf(stderr, "(%.*s)", (int)(end - start), start);
|
||||||
|
}
|
||||||
|
#endif
|
|
@ -0,0 +1,37 @@
|
||||||
|
#ifndef _PY_TOKENIZER_HELPERS_H_
|
||||||
|
#define _PY_TOKENIZER_HELPERS_H_
|
||||||
|
|
||||||
|
#include "Python.h"
|
||||||
|
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
|
||||||
|
#define ADVANCE_LINENO() \
|
||||||
|
tok->lineno++; \
|
||||||
|
tok->col_offset = 0;
|
||||||
|
|
||||||
|
int _PyTokenizer_syntaxerror(struct tok_state *tok, const char *format, ...);
|
||||||
|
int _PyTokenizer_syntaxerror_known_range(struct tok_state *tok, int col_offset, int end_col_offset, const char *format, ...);
|
||||||
|
int _PyTokenizer_indenterror(struct tok_state *tok);
|
||||||
|
int _PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char);
|
||||||
|
int _PyTokenizer_parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...);
|
||||||
|
char *_PyTokenizer_error_ret(struct tok_state *tok);
|
||||||
|
|
||||||
|
char *_PyTokenizer_new_string(const char *s, Py_ssize_t len, struct tok_state *tok);
|
||||||
|
char *_PyTokenizer_translate_newlines(const char *s, int exec_input, int preserve_crlf, struct tok_state *tok);
|
||||||
|
PyObject *_PyTokenizer_translate_into_utf8(const char* str, const char* enc);
|
||||||
|
|
||||||
|
int _PyTokenizer_check_bom(int get_char(struct tok_state *),
|
||||||
|
void unget_char(int, struct tok_state *),
|
||||||
|
int set_readline(struct tok_state *, const char *),
|
||||||
|
struct tok_state *tok);
|
||||||
|
int _PyTokenizer_check_coding_spec(const char* line, Py_ssize_t size, struct tok_state *tok,
|
||||||
|
int set_readline(struct tok_state *, const char *));
|
||||||
|
int _PyTokenizer_ensure_utf8(char *line, struct tok_state *tok);
|
||||||
|
|
||||||
|
#ifdef Py_DEBUG
|
||||||
|
void _PyTokenizer_print_escape(FILE *f, const char *s, Py_ssize_t size);
|
||||||
|
void _PyTokenizer_tok_dump(int type, char *start, char *end);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
|
@ -0,0 +1,134 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "helpers.h"
|
||||||
|
#include "../lexer/lexer.h"
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
#include "../lexer/buffer.h"
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_readline_string(struct tok_state* tok) {
|
||||||
|
PyObject* line = NULL;
|
||||||
|
PyObject* raw_line = PyObject_CallNoArgs(tok->readline);
|
||||||
|
if (raw_line == NULL) {
|
||||||
|
if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
|
||||||
|
PyErr_Clear();
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
if(tok->encoding != NULL) {
|
||||||
|
if (!PyBytes_Check(raw_line)) {
|
||||||
|
PyErr_Format(PyExc_TypeError, "readline() returned a non-bytes object");
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
line = PyUnicode_Decode(PyBytes_AS_STRING(raw_line), PyBytes_GET_SIZE(raw_line),
|
||||||
|
tok->encoding, "replace");
|
||||||
|
Py_CLEAR(raw_line);
|
||||||
|
if (line == NULL) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if(!PyUnicode_Check(raw_line)) {
|
||||||
|
PyErr_Format(PyExc_TypeError, "readline() returned a non-string object");
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
line = raw_line;
|
||||||
|
raw_line = NULL;
|
||||||
|
}
|
||||||
|
Py_ssize_t buflen;
|
||||||
|
const char* buf = PyUnicode_AsUTF8AndSize(line, &buflen);
|
||||||
|
if (buf == NULL) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Make room for the null terminator *and* potentially
|
||||||
|
// an extra newline character that we may need to artificially
|
||||||
|
// add.
|
||||||
|
size_t buffer_size = buflen + 2;
|
||||||
|
if (!_PyLexer_tok_reserve_buf(tok, buffer_size)) {
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
memcpy(tok->inp, buf, buflen);
|
||||||
|
tok->inp += buflen;
|
||||||
|
*tok->inp = '\0';
|
||||||
|
|
||||||
|
tok->line_start = tok->cur;
|
||||||
|
Py_DECREF(line);
|
||||||
|
return 1;
|
||||||
|
error:
|
||||||
|
Py_XDECREF(raw_line);
|
||||||
|
Py_XDECREF(line);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_underflow_readline(struct tok_state* tok) {
|
||||||
|
assert(tok->decoding_state == STATE_NORMAL);
|
||||||
|
assert(tok->fp == NULL && tok->input == NULL && tok->decoding_readline == NULL);
|
||||||
|
if (tok->start == NULL && !INSIDE_FSTRING(tok)) {
|
||||||
|
tok->cur = tok->inp = tok->buf;
|
||||||
|
}
|
||||||
|
if (!tok_readline_string(tok)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
if (tok->inp == tok->cur) {
|
||||||
|
tok->done = E_EOF;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
tok->implicit_newline = 0;
|
||||||
|
if (tok->inp[-1] != '\n') {
|
||||||
|
assert(tok->inp + 1 < tok->end);
|
||||||
|
/* Last line does not end in \n, fake one */
|
||||||
|
*tok->inp++ = '\n';
|
||||||
|
*tok->inp = '\0';
|
||||||
|
tok->implicit_newline = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
/* The default encoding is UTF-8, so make sure we don't have any
|
||||||
|
non-UTF-8 sequences in it. */
|
||||||
|
if (!tok->encoding && !_PyTokenizer_ensure_utf8(tok->cur, tok)) {
|
||||||
|
_PyTokenizer_error_ret(tok);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
assert(tok->done == E_OK);
|
||||||
|
return tok->done == E_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct tok_state *
|
||||||
|
_PyTokenizer_FromReadline(PyObject* readline, const char* enc,
|
||||||
|
int exec_input, int preserve_crlf)
|
||||||
|
{
|
||||||
|
struct tok_state *tok = _PyTokenizer_tok_new();
|
||||||
|
if (tok == NULL)
|
||||||
|
return NULL;
|
||||||
|
if ((tok->buf = (char *)PyMem_Malloc(BUFSIZ)) == NULL) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tok->cur = tok->inp = tok->buf;
|
||||||
|
tok->end = tok->buf + BUFSIZ;
|
||||||
|
tok->fp = NULL;
|
||||||
|
if (enc != NULL) {
|
||||||
|
tok->encoding = _PyTokenizer_new_string(enc, strlen(enc), tok);
|
||||||
|
if (!tok->encoding) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
tok->underflow = &tok_underflow_readline;
|
||||||
|
Py_INCREF(readline);
|
||||||
|
tok->readline = readline;
|
||||||
|
return tok;
|
||||||
|
}
|
|
@ -0,0 +1,129 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "helpers.h"
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_underflow_string(struct tok_state *tok) {
|
||||||
|
char *end = strchr(tok->inp, '\n');
|
||||||
|
if (end != NULL) {
|
||||||
|
end++;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
end = strchr(tok->inp, '\0');
|
||||||
|
if (end == tok->inp) {
|
||||||
|
tok->done = E_EOF;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (tok->start == NULL) {
|
||||||
|
tok->buf = tok->cur;
|
||||||
|
}
|
||||||
|
tok->line_start = tok->cur;
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
tok->inp = end;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Fetch a byte from TOK, using the string buffer. */
|
||||||
|
static int
|
||||||
|
buf_getc(struct tok_state *tok) {
|
||||||
|
return Py_CHARMASK(*tok->str++);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Unfetch a byte from TOK, using the string buffer. */
|
||||||
|
static void
|
||||||
|
buf_ungetc(int c, struct tok_state *tok) {
|
||||||
|
tok->str--;
|
||||||
|
assert(Py_CHARMASK(*tok->str) == c); /* tok->cur may point to read-only segment */
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set the readline function for TOK to ENC. For the string-based
|
||||||
|
tokenizer, this means to just record the encoding. */
|
||||||
|
static int
|
||||||
|
buf_setreadl(struct tok_state *tok, const char* enc) {
|
||||||
|
tok->enc = enc;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Decode a byte string STR for use as the buffer of TOK.
|
||||||
|
Look for encoding declarations inside STR, and record them
|
||||||
|
inside TOK. */
|
||||||
|
static char *
|
||||||
|
decode_str(const char *input, int single, struct tok_state *tok, int preserve_crlf)
|
||||||
|
{
|
||||||
|
PyObject* utf8 = NULL;
|
||||||
|
char *str;
|
||||||
|
const char *s;
|
||||||
|
const char *newl[2] = {NULL, NULL};
|
||||||
|
int lineno = 0;
|
||||||
|
tok->input = str = _PyTokenizer_translate_newlines(input, single, preserve_crlf, tok);
|
||||||
|
if (str == NULL)
|
||||||
|
return NULL;
|
||||||
|
tok->enc = NULL;
|
||||||
|
tok->str = str;
|
||||||
|
if (!_PyTokenizer_check_bom(buf_getc, buf_ungetc, buf_setreadl, tok))
|
||||||
|
return _PyTokenizer_error_ret(tok);
|
||||||
|
str = tok->str; /* string after BOM if any */
|
||||||
|
assert(str);
|
||||||
|
if (tok->enc != NULL) {
|
||||||
|
utf8 = _PyTokenizer_translate_into_utf8(str, tok->enc);
|
||||||
|
if (utf8 == NULL)
|
||||||
|
return _PyTokenizer_error_ret(tok);
|
||||||
|
str = PyBytes_AsString(utf8);
|
||||||
|
}
|
||||||
|
for (s = str;; s++) {
|
||||||
|
if (*s == '\0') break;
|
||||||
|
else if (*s == '\n') {
|
||||||
|
assert(lineno < 2);
|
||||||
|
newl[lineno] = s;
|
||||||
|
lineno++;
|
||||||
|
if (lineno == 2) break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
tok->enc = NULL;
|
||||||
|
/* need to check line 1 and 2 separately since check_coding_spec
|
||||||
|
assumes a single line as input */
|
||||||
|
if (newl[0]) {
|
||||||
|
if (!_PyTokenizer_check_coding_spec(str, newl[0] - str, tok, buf_setreadl)) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
if (tok->enc == NULL && tok->decoding_state != STATE_NORMAL && newl[1]) {
|
||||||
|
if (!_PyTokenizer_check_coding_spec(newl[0]+1, newl[1] - newl[0],
|
||||||
|
tok, buf_setreadl))
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (tok->enc != NULL) {
|
||||||
|
assert(utf8 == NULL);
|
||||||
|
utf8 = _PyTokenizer_translate_into_utf8(str, tok->enc);
|
||||||
|
if (utf8 == NULL)
|
||||||
|
return _PyTokenizer_error_ret(tok);
|
||||||
|
str = PyBytes_AS_STRING(utf8);
|
||||||
|
}
|
||||||
|
assert(tok->decoding_buffer == NULL);
|
||||||
|
tok->decoding_buffer = utf8; /* CAUTION */
|
||||||
|
return str;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set up tokenizer for string */
|
||||||
|
struct tok_state *
|
||||||
|
_PyTokenizer_FromString(const char *str, int exec_input, int preserve_crlf)
|
||||||
|
{
|
||||||
|
struct tok_state *tok = _PyTokenizer_tok_new();
|
||||||
|
char *decoded;
|
||||||
|
|
||||||
|
if (tok == NULL)
|
||||||
|
return NULL;
|
||||||
|
decoded = decode_str(str, exec_input, tok, preserve_crlf);
|
||||||
|
if (decoded == NULL) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
tok->buf = tok->cur = tok->inp = decoded;
|
||||||
|
tok->end = decoded;
|
||||||
|
tok->underflow = &tok_underflow_string;
|
||||||
|
return tok;
|
||||||
|
}
|
|
@ -0,0 +1,14 @@
|
||||||
|
#ifndef Py_TOKENIZER_H
|
||||||
|
#define Py_TOKENIZER_H
|
||||||
|
|
||||||
|
#include "Python.h"
|
||||||
|
|
||||||
|
struct tok_state *_PyTokenizer_FromString(const char *, int, int);
|
||||||
|
struct tok_state *_PyTokenizer_FromUTF8(const char *, int, int);
|
||||||
|
struct tok_state *_PyTokenizer_FromReadline(PyObject*, const char*, int, int);
|
||||||
|
struct tok_state *_PyTokenizer_FromFile(FILE *, const char*,
|
||||||
|
const char *, const char *);
|
||||||
|
|
||||||
|
#define tok_dump _Py_tok_dump
|
||||||
|
|
||||||
|
#endif /* !Py_TOKENIZER_H */
|
|
@ -0,0 +1,55 @@
|
||||||
|
#include "Python.h"
|
||||||
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#include "helpers.h"
|
||||||
|
#include "../lexer/state.h"
|
||||||
|
|
||||||
|
static int
|
||||||
|
tok_underflow_string(struct tok_state *tok) {
|
||||||
|
char *end = strchr(tok->inp, '\n');
|
||||||
|
if (end != NULL) {
|
||||||
|
end++;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
end = strchr(tok->inp, '\0');
|
||||||
|
if (end == tok->inp) {
|
||||||
|
tok->done = E_EOF;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (tok->start == NULL) {
|
||||||
|
tok->buf = tok->cur;
|
||||||
|
}
|
||||||
|
tok->line_start = tok->cur;
|
||||||
|
ADVANCE_LINENO();
|
||||||
|
tok->inp = end;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set up tokenizer for UTF-8 string */
|
||||||
|
struct tok_state *
|
||||||
|
_PyTokenizer_FromUTF8(const char *str, int exec_input, int preserve_crlf)
|
||||||
|
{
|
||||||
|
struct tok_state *tok = _PyTokenizer_tok_new();
|
||||||
|
char *translated;
|
||||||
|
if (tok == NULL)
|
||||||
|
return NULL;
|
||||||
|
tok->input = translated = _PyTokenizer_translate_newlines(str, exec_input, preserve_crlf, tok);
|
||||||
|
if (translated == NULL) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tok->decoding_state = STATE_NORMAL;
|
||||||
|
tok->enc = NULL;
|
||||||
|
tok->str = translated;
|
||||||
|
tok->encoding = _PyTokenizer_new_string("utf-8", 5, tok);
|
||||||
|
if (!tok->encoding) {
|
||||||
|
_PyTokenizer_Free(tok);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
tok->buf = tok->cur = tok->inp = translated;
|
||||||
|
tok->end = translated;
|
||||||
|
tok->underflow = &tok_underflow_string;
|
||||||
|
return tok;
|
||||||
|
}
|
|
@ -1,6 +1,8 @@
|
||||||
#include "Python.h"
|
#include "Python.h"
|
||||||
#include "errcode.h"
|
#include "errcode.h"
|
||||||
#include "../Parser/tokenizer.h"
|
#include "../Parser/lexer/state.h"
|
||||||
|
#include "../Parser/lexer/lexer.h"
|
||||||
|
#include "../Parser/tokenizer/tokenizer.h"
|
||||||
#include "../Parser/pegen.h" // _PyPegen_byte_offset_to_character_offset()
|
#include "../Parser/pegen.h" // _PyPegen_byte_offset_to_character_offset()
|
||||||
#include "../Parser/pegen.h" // _PyPegen_byte_offset_to_character_offset()
|
#include "../Parser/pegen.h" // _PyPegen_byte_offset_to_character_offset()
|
||||||
|
|
||||||
|
|
|
@ -335,7 +335,7 @@ Objects/unicodeobject.c unicode_encode_call_errorhandler argparse -
|
||||||
Objects/unicodeobject.c unicode_translate_call_errorhandler argparse -
|
Objects/unicodeobject.c unicode_translate_call_errorhandler argparse -
|
||||||
Parser/parser.c - reserved_keywords -
|
Parser/parser.c - reserved_keywords -
|
||||||
Parser/parser.c - soft_keywords -
|
Parser/parser.c - soft_keywords -
|
||||||
Parser/tokenizer.c - type_comment_prefix -
|
Parser/lexer/lexer.c - type_comment_prefix -
|
||||||
Python/ast_opt.c fold_unaryop ops -
|
Python/ast_opt.c fold_unaryop ops -
|
||||||
Python/ceval.c - _PyEval_BinaryOps -
|
Python/ceval.c - _PyEval_BinaryOps -
|
||||||
Python/ceval.c - _Py_INTERPRETER_TRAMPOLINE_INSTRUCTIONS -
|
Python/ceval.c - _Py_INTERPRETER_TRAMPOLINE_INSTRUCTIONS -
|
||||||
|
|
Can't render this file because it has a wrong number of fields in line 4.
|
|
@ -26679,6 +26679,8 @@ SRCDIRS="\
|
||||||
Modules/expat \
|
Modules/expat \
|
||||||
Objects \
|
Objects \
|
||||||
Parser \
|
Parser \
|
||||||
|
Parser/tokenizer \
|
||||||
|
Parser/lexer \
|
||||||
Programs \
|
Programs \
|
||||||
Python \
|
Python \
|
||||||
Python/frozen_modules \
|
Python/frozen_modules \
|
||||||
|
|
|
@ -6526,6 +6526,8 @@ SRCDIRS="\
|
||||||
Modules/expat \
|
Modules/expat \
|
||||||
Objects \
|
Objects \
|
||||||
Parser \
|
Parser \
|
||||||
|
Parser/tokenizer \
|
||||||
|
Parser/lexer \
|
||||||
Programs \
|
Programs \
|
||||||
Python \
|
Python \
|
||||||
Python/frozen_modules \
|
Python/frozen_modules \
|
||||||
|
|
Loading…
Reference in New Issue