Mercurial > genshi > mirror
comparison genshi/template/directives.py @ 602:d7b957e92ea9 trunk
Add runtime optimization hints for match templates.
| author | cmlenz |
|---|---|
| date | Thu, 23 Aug 2007 11:35:43 +0000 |
| parents | 59fbd7586454 |
| children | 416e46209da1 |
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| 601:59fbd7586454 | 602:d7b957e92ea9 |
|---|---|
| 12 # history and logs, available at http://genshi.edgewall.org/log/. | 12 # history and logs, available at http://genshi.edgewall.org/log/. |
| 13 | 13 |
| 14 """Implementation of the various template directives.""" | 14 """Implementation of the various template directives.""" |
| 15 | 15 |
| 16 import compiler | 16 import compiler |
| 17 try: | |
| 18 frozenset | |
| 19 except NameError: | |
| 20 from sets import ImmutableSet as frozenset | |
| 17 | 21 |
| 18 from genshi.core import QName, Stream | 22 from genshi.core import QName, Stream |
| 19 from genshi.path import Path | 23 from genshi.path import Path |
| 20 from genshi.template.base import TemplateRuntimeError, TemplateSyntaxError, \ | 24 from genshi.template.base import TemplateRuntimeError, TemplateSyntaxError, \ |
| 21 EXPR, _apply_directives | 25 EXPR, _apply_directives |
| 421 <span> | 425 <span> |
| 422 Hello Dude | 426 Hello Dude |
| 423 </span> | 427 </span> |
| 424 </div> | 428 </div> |
| 425 """ | 429 """ |
| 426 __slots__ = ['path', 'namespaces'] | 430 __slots__ = ['path', 'namespaces', 'hints'] |
| 427 | 431 |
| 428 def __init__(self, value, template, namespaces=None, lineno=-1, offset=-1): | 432 def __init__(self, value, template, hints=None, namespaces=None, |
| 433 lineno=-1, offset=-1): | |
| 429 Directive.__init__(self, None, template, namespaces, lineno, offset) | 434 Directive.__init__(self, None, template, namespaces, lineno, offset) |
| 430 self.path = Path(value, template.filepath, lineno) | 435 self.path = Path(value, template.filepath, lineno) |
| 431 self.namespaces = namespaces or {} | 436 self.namespaces = namespaces or {} |
| 432 | 437 self.hints = hints or () |
| 433 def attach(cls, template, stream, value, namespaces, pos): | 438 |
| 439 def attach(cls, template, stream, value, namespaces, pos): | |
| 440 hints = [] | |
| 434 if type(value) is dict: | 441 if type(value) is dict: |
| 442 if value.get('once', '').lower() == 'true': | |
| 443 hints.append('match_once') | |
| 444 if value.get('recursive', '').lower() == 'false': | |
| 445 hints.append('not_recursive') | |
| 435 value = value.get('path') | 446 value = value.get('path') |
| 436 return super(MatchDirective, cls).attach(template, stream, value, | 447 return cls(value, template, frozenset(hints), namespaces, *pos[1:]), \ |
| 437 namespaces, pos) | 448 stream |
| 438 attach = classmethod(attach) | 449 attach = classmethod(attach) |
| 439 | 450 |
| 440 def __call__(self, stream, ctxt, directives): | 451 def __call__(self, stream, ctxt, directives): |
| 441 ctxt._match_templates.append((self.path.test(ignore_context=True), | 452 ctxt._match_templates.append((self.path.test(ignore_context=True), |
| 442 self.path, list(stream), self.namespaces, | 453 self.path, list(stream), self.hints, |
| 443 directives)) | 454 self.namespaces, directives)) |
| 444 return [] | 455 return [] |
| 445 | 456 |
| 446 def __repr__(self): | 457 def __repr__(self): |
| 447 return '<%s "%s">' % (self.__class__.__name__, self.path.source) | 458 return '<%s "%s">' % (self.__class__.__name__, self.path.source) |
| 448 | 459 |