[javascriptlint-commit] SF.net SVN: javascriptlint:[343] trunk/jsengine/tokenizer
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[javascriptlint-commit] SF.net SVN: javascriptlint:[343] trunk/jsengine/tokenizer
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From: <mat...@us...> - 2013-10-10 14:07:44
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Revision: 343
http://sourceforge.net/p/javascriptlint/code/343
Author: matthiasmiller
Date: 2013-10-10 14:07:41 +0000 (Thu, 10 Oct 2013)
Log Message:
-----------
Fully distinguish between chars and strings.
Modified Paths:
--------------
trunk/jsengine/tokenizer/__init__.py
trunk/jsengine/tokenizer/tok.py
Modified: trunk/jsengine/tokenizer/__init__.py
===================================================================
--- trunk/jsengine/tokenizer/__init__.py 2013-10-09 22:41:46 UTC (rev 342)
+++ trunk/jsengine/tokenizer/__init__.py 2013-10-10 14:07:41 UTC (rev 343)
@@ -14,14 +14,43 @@
_KEYWORDS = tok.getkeywords()
_PUNCTUATOR_TREE = tok.get_punctuator_tree()
-def _str_has_chr(s, c):
- assert len(c) <= 1
- return c in s
+class _Char(object):
+ def __init__(self, u):
+ assert isinstance(u, int) or u is None, u
+ self._u = u
-def _chr_to_str(c):
- assert len(c) <= 1
- return c
+ @classmethod
+ def fromstr(cls, s, i):
+ return _Char(ord(s[i]))
+ @classmethod
+ def ord(cls, s):
+ return _Char(ord(s))
+
+ @property
+ def uval(self):
+ return self._u
+
+ def tostr(self):
+ if self._u is None:
+ return unicode()
+ return unichr(self._u)
+
+ def instr(self, s):
+ if self._u is None:
+ return False
+ return s.find(unichr(self._u)) != -1
+
+ def __hash__(self):
+ return hash(self._u)
+
+ def __eq__(self, other):
+ assert isinstance(other, _Char), other
+ return self._u == other._u
+
+ def __nonzero__(self):
+ return not self._u is None
+
class Token:
def __init__(self, tok, atom=None):
self.tok = tok
@@ -69,7 +98,7 @@
if self.peekchr() == expect:
self._offset += 1
return expect
- return ''
+ return _Char(None)
def readchrin(self, seq):
s = self.peekchrin(seq)
@@ -79,14 +108,14 @@
def peekchr(self):
if self._offset < len(self._content):
- return self._content[self._offset]
- return ''
+ return _Char.fromstr(self._content, self._offset)
+ return _Char(None)
def peekchrin(self, seq):
c = self.peekchr()
- if c and _str_has_chr(seq, c):
+ if c and c.instr(seq):
return c
- return ''
+ return _Char(None)
def readtextif(self, text):
""" Returns the string if found. Otherwise returns None.
@@ -184,20 +213,20 @@
stream = self._stream
while True:
c = stream.readchr()
- if c == '\\':
+ if c == _Char.ord('\\'):
c = stream.readchr()
- if c == '\n':
+ if c == _Char.ord('\n'):
return Token(tok.ERROR)
- elif c == '[':
+ elif c == _Char.ord('['):
while True:
c = stream.readchr()
- if c == '\n':
+ if c == _Char.ord('\n'):
return Token(tok.ERROR)
- elif c == ']':
+ elif c == _Char.ord(']'):
break
- elif c == '\n':
+ elif c == _Char.ord('\n'):
return Token(tok.ERROR)
- elif c == '/':
+ elif c == _Char.ord('/'):
break
# TODO: Validate and save
@@ -219,8 +248,8 @@
c = stream.readchr()
# WHITESPACE
- if _str_has_chr(_WHITESPACE, c) or _str_has_chr(_LINETERMINATOR, c):
- linebreak = _str_has_chr(_LINETERMINATOR, c)
+ if c.instr(_WHITESPACE) or c.instr(_LINETERMINATOR):
+ linebreak = c.instr(_LINETERMINATOR)
while True:
if stream.readchrin(_LINETERMINATOR):
linebreak = True
@@ -234,49 +263,49 @@
return Token(tok.SPACE)
# COMMENTS
- if c == '/':
- if stream.peekchr() == '/':
+ if c == _Char.ord('/'):
+ if stream.peekchr() == _Char.ord('/'):
while not stream.eof() and not stream.peekchrin(_LINETERMINATOR):
stream.readchr()
return Token(tok.CPP_COMMENT)
- if stream.peekchr() == '*':
+ if stream.peekchr() == _Char.ord('*'):
linebreak = False
while True:
if stream.eof():
return Token(tok.ERROR, atom='unterminated_comment')
c = stream.readchr()
- if _str_has_chr(_LINETERMINATOR, c):
+ if c.instr(_LINETERMINATOR):
linebreak = True
- elif c == '*' and stream.readchrif('/'):
+ elif c == _Char.ord('*') and stream.readchrif(_Char.ord('/')):
return Token(tok.C_COMMENT)
return Token(tok.EOF)
- elif c == '<':
+ elif c == _Char.ord('<'):
if stream.readtextif('!--'):
while not stream.eof() and not stream.peekchrin(_LINETERMINATOR):
stream.readchr()
return Token(tok.HTML_COMMENT)
# STRING LITERALS
- if c == '"' or c == "'":
+ if c == _Char.ord('"') or c == _Char.ord("'"):
# TODO: Decode
s = ''
quote = c
while True:
c = stream.readchr()
- if c == '\\':
+ if c == _Char.ord('\\'):
c = stream.readchr()
elif c == quote:
return Token(tok.STRING, atom=s)
- s += _chr_to_str(c)
+ s += c.tostr()
# NUMBERS
- if _str_has_chr(_DIGITS, c) or (c == '.' and stream.peekchrin(_DIGITS)):
+ if c.instr(_DIGITS) or (c == _Char.ord('.') and stream.peekchrin(_DIGITS)):
s = c # TODO
- if c == '0' and stream.readchrin('xX'):
+ if c == _Char.ord('0') and stream.readchrin('xX'):
# Hex
while stream.readchrin(_HEX_DIGITS):
pass
- elif c == '0' and stream.readchrin(_DIGITS):
+ elif c == _Char.ord('0') and stream.readchrin(_DIGITS):
# Octal
while stream.readchrin(_DIGITS):
pass
@@ -285,7 +314,7 @@
if c != '.':
while stream.readchrin(_DIGITS):
pass
- stream.readchrif('.')
+ stream.readchrif(_Char.ord('.'))
while stream.readchrin(_DIGITS):
pass
@@ -303,21 +332,22 @@
atom = stream.get_watched_reads()
return Token(tok.NUMBER, atom=atom)
- if c in _PUNCTUATOR_TREE:
- d = _PUNCTUATOR_TREE[c]
+ if c.uval in _PUNCTUATOR_TREE:
+ d = _PUNCTUATOR_TREE[c.uval]
while True:
- c = stream.readchrin(u''.join(d.keys()))
- if c:
- d = d[c]
+ c = stream.peekchr()
+ if c and c.uval in d:
+ stream.readchr()
+ d = d[c.uval]
else:
break
try:
- return Token(d[''])
+ return Token(d[-1])
except KeyError:
print('oops')
raise JSSyntaxError(stream.get_offset(), 'syntax_error')
- if _str_has_chr(_IDENT, c):
+ if c.instr(_IDENT):
while stream.readchrin(_IDENT + _DIGITS):
pass
@@ -327,4 +357,4 @@
return Token(tok.NAME, atom=atom)
raise JSSyntaxError(stream.get_offset(), 'unexpected_char',
- { 'char': _chr_to_str(c) })
+ { 'char': c.tostr() })
Modified: trunk/jsengine/tokenizer/tok.py
===================================================================
--- trunk/jsengine/tokenizer/tok.py 2013-10-09 22:41:46 UTC (rev 342)
+++ trunk/jsengine/tokenizer/tok.py 2013-10-10 14:07:41 UTC (rev 343)
@@ -121,8 +121,8 @@
for punctuator in (t for t in _ALL_TOKENS if t.category == 'sym'):
leaf = tree
for c in punctuator.literal:
- leaf = leaf.setdefault(c, {})
+ leaf = leaf.setdefault(ord(c), {})
assert not None in leaf, punctuator.literal
- leaf[''] = punctuator
+ leaf[-1] = punctuator
return tree
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