def bad_utf8(location_msg, line, lnum, pos, token_list, flags):
msg = 'Non-UTF-8 code in %s' % location_msg
if not (flags & consts.PyCF_FOUND_ENCODING):
# this extra part of the message is added only if we found no
# explicit encoding
msg += (' but no encoding declared; see '
'http://python.org/dev/peps/pep-0263/ for details')
return TokenError(msg, line, lnum, pos, token_list)
def generate_tokens(lines, flags):
"""
This is a rewrite of pypy.module.parser.pytokenize.generate_tokens since
the original function is not RPYTHON (uses yield)
It was also slightly modified to generate Token instances instead
of the original 5-tuples -- it's now a 4-tuple of
* the Token instance
* the whole line as a string
* the line number (the real one, counting continuation lines)
* the position on the line of the end of the token.
Original docstring ::
The generate_tokens() generator requires one argment, readline, which
must be a callable object which provides the same interface as the
readline() method of built-in file objects. Each call to the function
should return one line of input as a string.
The generator produces 5-tuples with these members: the token type; the
token string; a 2-tuple (srow, scol) of ints specifying the row and
column where the token begins in the source; a 2-tuple (erow, ecol) of
ints specifying the row and column where the token ends in the source;
and the line on which the token was found. The line passed is the
logical line; continuation lines are included.
"""
token_list = []
lnum = continued = 0
namechars = NAMECHARS
numchars = NUMCHARS
contstr, needcont = '', 0
contline = None
indents = [0]
altindents = [0]
last_comment = ''
parenstack = []
# make the annotator happy
endDFA = DUMMY_DFA
# make the annotator happy
line = ''
pos = 0
lines.append("")
strstart = (0, 0, "")
for line in lines:
lnum = lnum + 1
line = universal_newline(line)
pos, max = 0, len(line)
if contstr:
if not line:
raise TokenError(
"end of file (EOF) while scanning triple-quoted string literal",
strstart[2], strstart[0], strstart[1]+1,
token_list, lnum-1)
endmatch = endDFA.recognize(line)
if endmatch >= 0:
pos = end = endmatch
tok = Token(tokens.STRING, contstr + line[:end], strstart[0],
strstart[1], line)
token_list.append(tok)
last_comment = ''
contstr, needcont = '', 0
contline = None
elif (needcont and not line.endswith('\\\n') and
not line.endswith('\\\r\n')):
tok = Token(tokens.ERRORTOKEN, contstr + line, strstart[0],
strstart[1], line)
token_list.append(tok)
last_comment = ''
contstr = ''
contline = None
continue
else:
contstr = contstr + line
contline = contline + line
continue
elif not parenstack and not continued: # new statement
if not line: break
column = 0
altcolumn = 0
while pos < max: # measure leading whitespace
if line[pos] == ' ':
column = column + 1
altcolumn = altcolumn + 1
elif line[pos] == '\t':
column = (column/tabsize + 1)*tabsize
altcolumn = (altcolumn/alttabsize + 1)*alttabsize
elif line[pos] == '\f':
column = 0
else:
break
pos = pos + 1
if pos == max: break
if line[pos] in '\r\n':
# skip blank lines
continue
if line[pos] == '#':
# skip full-line comment, but still check that it is valid utf-8
if not verify_utf8(line):
raise bad_utf8("comment",
line, lnum, pos, token_list, flags)
continue
if column == indents[-1]:
if altcolumn != altindents[-1]:
raise TabError(lnum, pos, line)
elif column > indents[-1]: # count indents or dedents
if altcolumn <= altindents[-1]:
raise TabError(lnum, pos, line)
indents.append(column)
altindents.append(altcolumn)
token_list.append(Token(tokens.INDENT, line[:pos], lnum, 0, line))
last_comment = ''
else:
while column < indents[-1]:
indents.pop()
altindents.pop()
token_list.append(Token(tokens.DEDENT, '', lnum, pos, line))
last_comment = ''
if column != indents[-1]:
err = "unindent does not match any outer indentation level"
raise TokenIndentationError(err, line, lnum, column+1, token_list)
if altcolumn != altindents[-1]:
raise TabError(lnum, pos, line)
else: # continued statement
if not line:
if parenstack:
_, lnum1, start1, line1 = parenstack[0]
raise TokenError("parenthesis is never closed", line1,
lnum1, start1 + 1, token_list, lnum)
raise TokenError("end of file (EOF) in multi-line statement", line,
lnum, 0, token_list) # XXX why is the offset 0 here?
continued = 0
while pos < max:
pseudomatch = pseudoDFA.recognize(line, pos)
if pseudomatch >= 0: # scan for tokens
# JDR: Modified
start = whiteSpaceDFA.recognize(line, pos)
if start < 0:
start = pos
end = pseudomatch
if start == end:
raise TokenError("Unknown character", line,
lnum, start + 1, token_list)
pos = end
token, initial = line[start:end], line[start]
if (initial in numchars or \
(initial == '.' and token != '.' and token != '...')):
# ordinary number
token_list.append(Token(tokens.NUMBER, token, lnum, start, line))
last_comment = ''
elif initial in '\r\n':
if not parenstack:
tok = Token(tokens.NEWLINE, last_comment, lnum, start, line)
token_list.append(tok)
last_comment = ''
elif initial == '#':
# skip comment, but still check that it is valid utf-8
if not verify_utf8(token):
raise bad_utf8("comment",
line, lnum, start, token_list, flags)
last_comment = token
elif token in triple_quoted:
endDFA = endDFAs[token]
endmatch = endDFA.recognize(line, pos)
if endmatch >= 0: # all on one line
pos = endmatch
token = line[start:pos]
tok = Token(tokens.STRING, token, lnum, start, line)
token_list.append(tok)
last_comment = ''
else:
strstart = (lnum, start, line)
contstr = line[start:]
contline = line
break
elif initial in single_quoted or \
token[:2] in single_quoted or \
token[:3] in single_quoted:
if token[-1] == '\n': # continued string
strstart = (lnum, start, line)
endDFA = (endDFAs[initial] or endDFAs[token[1]] or
endDFAs[token[2]])
contstr, needcont = line[start:], 1
contline = line
break
else: # ordinary string
tok = Token(tokens.STRING, token, lnum, start, line)
token_list.append(tok)
last_comment = ''
elif (initial in namechars or # ordinary name
ord(initial) >= 0x80): # unicode identifier
valid = verify_identifier(token)
if valid <= 0:
if valid == -1:
raise bad_utf8("identifier", line, lnum, start + 1,
token_list, flags)
# valid utf-8, but it gives a unicode char that cannot
# be used in identifiers
raise TokenError("invalid character in identifier",
line, lnum, start + 1, token_list)
else:
token_list.append(Token(tokens.NAME, token, lnum, start, line))
last_comment = ''
elif initial == '\\': # continued stmt
continued = 1
elif initial == '$':
token_list.append(Token(tokens.REVDBMETAVAR, token,
lnum, start, line))
last_comment = ''
else:
if initial in '([{':
parenstack.append((initial, lnum, start, line))
elif initial in ')]}':
if not parenstack:
raise TokenError("unmatched '%s'" % initial, line,
lnum, start + 1, token_list)
opening, lnum1, start1, line1 = parenstack.pop()
if not ((opening == "(" and initial == ")") or
(opening == "[" and initial == "]") or
(opening == "{" and initial == "}")):
msg = "closing parenthesis '%s' does not match opening parenthesis '%s'" % (
initial, opening)
if lnum1 != lnum:
msg += " on line " + str(lnum1)
raise TokenError(
msg, line, lnum, start + 1, token_list)
if token in python_opmap:
punct = python_opmap[token]
else:
punct = tokens.OP
token_list.append(Token(punct, token, lnum, start, line))
last_comment = ''
else:
start = whiteSpaceDFA.recognize(line, pos)
if start < 0:
start = pos
if start<max and line[start] in single_quoted:
raise TokenError("end of line (EOL) while scanning string literal",
line, lnum, start+1, token_list)
tok = Token(tokens.ERRORTOKEN, line[pos], lnum, pos, line)
token_list.append(tok)
last_comment = ''
pos = pos + 1
lnum -= 1
if not (flags & consts.PyCF_DONT_IMPLY_DEDENT):
if token_list and token_list[-1].token_type != tokens.NEWLINE:
tok = Token(tokens.NEWLINE, '', lnum, 0, '\n')
token_list.append(tok)
for indent in indents[1:]: # pop remaining indent levels
token_list.append(Token(tokens.DEDENT, '', lnum, pos, line))
tok = Token(tokens.NEWLINE, '', lnum, 0, '\n')
token_list.append(tok)
token_list.append(Token(tokens.ENDMARKER, '', lnum, pos, line))
return token_list
def generate_tokens(lines, flags):
"""
This is a rewrite of pypy.module.parser.pytokenize.generate_tokens since
the original function is not RPYTHON (uses yield)
It was also slightly modified to generate Token instances instead
of the original 5-tuples -- it's now a 4-tuple of
* the Token instance
* the whole line as a string
* the line number (the real one, counting continuation lines)
* the position on the line of the end of the token.
Original docstring ::
The generate_tokens() generator requires one argment, readline, which
must be a callable object which provides the same interface as the
readline() method of built-in file objects. Each call to the function
should return one line of input as a string.
The generator produces 5-tuples with these members: the token type; the
token string; a 2-tuple (srow, scol) of ints specifying the row and
column where the token begins in the source; a 2-tuple (erow, ecol) of
ints specifying the row and column where the token ends in the source;
and the line on which the token was found. The line passed is the
logical line; continuation lines are included.
"""
token_list = []
lnum = parenlev = continued = 0
namechars = NAMECHARS
numchars = NUMCHARS
contstr, needcont = '', 0
contline = None
indents = [0]
last_comment = ''
parenlevstart = (0, 0, "")
# make the annotator happy
endDFA = DUMMY_DFA
# make the annotator happy
line = ''
pos = 0
lines.append("")
strstart = (0, 0, "")
for line in lines:
lnum = lnum + 1
line = universal_newline(line)
pos, max = 0, len(line)
if contstr:
if not line:
raise TokenError(
"EOF while scanning triple-quoted string literal",
strstart[2], strstart[0], strstart[1] + 1, token_list,
lnum - 1)
endmatch = endDFA.recognize(line)
if endmatch >= 0:
pos = end = endmatch
tok = (tokens.STRING, contstr + line[:end], strstart[0],
strstart[1], line)
token_list.append(tok)
last_comment = ''
contstr, needcont = '', 0
contline = None
elif (needcont and not line.endswith('\\\n')
and not line.endswith('\\\r\n')):
tok = (tokens.ERRORTOKEN, contstr + line, strstart[0],
strstart[1], line)
token_list.append(tok)
last_comment = ''
contstr = ''
contline = None
continue
else:
contstr = contstr + line
contline = contline + line
continue
elif parenlev == 0 and not continued: # new statement
if not line: break
column = 0
while pos < max: # measure leading whitespace
if line[pos] == ' ': column = column + 1
elif line[pos] == '\t':
column = (column / tabsize + 1) * tabsize
elif line[pos] == '\f':
column = 0
else:
break
pos = pos + 1
if pos == max: break
if line[pos] in '#\r\n':
# skip comments or blank lines
continue
if column > indents[-1]: # count indents or dedents
indents.append(column)
token_list.append((tokens.INDENT, line[:pos], lnum, 0, line))
last_comment = ''
while column < indents[-1]:
indents = indents[:-1]
token_list.append((tokens.DEDENT, '', lnum, pos, line))
last_comment = ''
if column != indents[-1]:
err = "unindent does not match any outer indentation level"
raise TokenIndentationError(err, line, lnum, 0, token_list)
else: # continued statement
if not line:
if parenlev > 0:
lnum1, start1, line1 = parenlevstart
raise TokenError("parenthesis is never closed", line1,
lnum1, start1 + 1, token_list, lnum)
raise TokenError("EOF in multi-line statement", line, lnum, 0,
token_list)
continued = 0
while pos < max:
pseudomatch = pseudoDFA.recognize(line, pos)
if pseudomatch >= 0: # scan for tokens
# JDR: Modified
start = whiteSpaceDFA.recognize(line, pos)
if start < 0:
start = pos
end = pseudomatch
if start == end:
raise TokenError("Unknown character", line, lnum,
start + 1, token_list)
pos = end
token, initial = line[start:end], line[start]
if initial in numchars or \
(initial == '.' and token != '.'): # ordinary number
token_list.append(
(tokens.NUMBER, token, lnum, start, line))
last_comment = ''
elif initial in '\r\n':
if parenlev <= 0:
tok = (tokens.NEWLINE, last_comment, lnum, start, line)
token_list.append(tok)
last_comment = ''
elif initial == '#':
# skip comment
last_comment = token
elif token in triple_quoted:
endDFA = endDFAs[token]
endmatch = endDFA.recognize(line, pos)
if endmatch >= 0: # all on one line
pos = endmatch
token = line[start:pos]
tok = (tokens.STRING, token, lnum, start, line)
token_list.append(tok)
last_comment = ''
else:
strstart = (lnum, start, line)
contstr = line[start:]
contline = line
break
elif initial in single_quoted or \
token[:2] in single_quoted or \
token[:3] in single_quoted:
if token[-1] == '\n': # continued string
strstart = (lnum, start, line)
endDFA = (endDFAs[initial] or endDFAs[token[1]]
or endDFAs[token[2]])
contstr, needcont = line[start:], 1
contline = line
break
else: # ordinary string
tok = (tokens.STRING, token, lnum, start, line)
token_list.append(tok)
last_comment = ''
elif initial in namechars: # ordinary name
token_list.append((tokens.NAME, token, lnum, start, line))
last_comment = ''
elif initial == '\\': # continued stmt
continued = 1
else:
if initial in '([{':
if parenlev == 0:
parenlevstart = (lnum, start, line)
parenlev = parenlev + 1
elif initial in ')]}':
parenlev = parenlev - 1
if parenlev < 0:
raise TokenError("unmatched '%s'" % initial, line,
lnum, start + 1, token_list)
if token in python_opmap:
punct = python_opmap[token]
else:
punct = tokens.OP
token_list.append((punct, token, lnum, start, line))
last_comment = ''
else:
start = whiteSpaceDFA.recognize(line, pos)
if start < 0:
start = pos
if start < max and line[start] in single_quoted:
raise TokenError("EOL mientras leyendo palabra literal",
line, lnum, start + 1, token_list)
tok = (tokens.ERRORTOKEN, line[pos], lnum, pos, line)
token_list.append(tok)
last_comment = ''
pos = pos + 1
lnum -= 1
if not (flags & consts.PyCF_DONT_IMPLY_DEDENT):
if token_list and token_list[-1][0] != tokens.NEWLINE:
tok = (tokens.NEWLINE, '', lnum, 0, '\n')
token_list.append(tok)
for indent in indents[1:]: # pop remaining indent levels
token_list.append((tokens.DEDENT, '', lnum, pos, line))
tok = (tokens.NEWLINE, '', lnum, 0, '\n')
token_list.append(tok)
token_list.append((tokens.ENDMARKER, '', lnum, pos, line))
return token_list