annotate genshi/template/markup.py @ 724:919809e55d16 experimental-match-fastpaths

update to trunk to track r847, fixing python 2.4 compatibility issues in speedup (and fixing copyrights, apparently :))
author aflett
date Mon, 21 Apr 2008 19:36:53 +0000
parents d143dd73789b
children ea46fb523485
rev   line source
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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2006-2008 Edgewall Software
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4 # All rights reserved.
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5 #
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6 # This software is licensed as described in the file COPYING, which
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7 # you should have received as part of this distribution. The terms
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8 # are also available at http://genshi.edgewall.org/wiki/License.
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9 #
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10 # This software consists of voluntary contributions made by many
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11 # individuals. For the exact contribution history, see the revision
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12 # history and logs, available at http://genshi.edgewall.org/log/.
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13
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14 """Markup templating engine."""
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15
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16 from itertools import chain
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17
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18 from genshi.core import Attrs, Markup, Namespace, Stream, StreamEventKind
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19 from genshi.core import START, END, START_NS, END_NS, TEXT, PI, COMMENT
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20 from genshi.input import XMLParser
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21 from genshi.template.base import BadDirectiveError, Template, \
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22 TemplateSyntaxError, _apply_directives, \
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23 EXEC, INCLUDE, SUB
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24 from genshi.template.eval import Suite
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25 from genshi.template.interpolation import interpolate
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26 from genshi.template.directives import *
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5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
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27 from genshi.template.text import NewTextTemplate
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28
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29 __all__ = ['MarkupTemplate']
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30 __docformat__ = 'restructuredtext en'
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31
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32
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33 class MarkupTemplate(Template):
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34 """Implementation of the template language for XML-based templates.
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35
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36 >>> tmpl = MarkupTemplate('''<ul xmlns:py="http://genshi.edgewall.org/">
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37 ... <li py:for="item in items">${item}</li>
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38 ... </ul>''')
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39 >>> print tmpl.generate(items=[1, 2, 3])
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40 <ul>
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41 <li>1</li><li>2</li><li>3</li>
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42 </ul>
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43 """
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44
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45 DIRECTIVE_NAMESPACE = Namespace('http://genshi.edgewall.org/')
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46 XINCLUDE_NAMESPACE = Namespace('http://www.w3.org/2001/XInclude')
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47
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48 directives = [('def', DefDirective),
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49 ('match', MatchDirective),
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50 ('when', WhenDirective),
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51 ('otherwise', OtherwiseDirective),
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52 ('for', ForDirective),
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53 ('if', IfDirective),
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54 ('choose', ChooseDirective),
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55 ('with', WithDirective),
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56 ('replace', ReplaceDirective),
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57 ('content', ContentDirective),
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58 ('attrs', AttrsDirective),
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59 ('strip', StripDirective)]
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d0345c64da65 Text templates now default to rendering as plain text; it is no longer necessary to explicitly specify the "text" method to the `render()` or `serialize()` method of the generated markup stream. See tickets #62 and #118.
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60 serializer = 'xml'
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61 _number_conv = Markup
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62
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63 def _init_filters(self):
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64 Template._init_filters(self)
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65 # Make sure the include filter comes after the match filter
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66 if self.loader:
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67 self.filters.remove(self._include)
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68 self.filters += [self._match]
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69 if self.loader:
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70 self.filters.append(self._include)
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71
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72 def _parse(self, source, encoding):
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73 streams = [[]] # stacked lists of events of the "compiled" template
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74 dirmap = {} # temporary mapping of directives to elements
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75 ns_prefix = {}
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76 depth = 0
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77 fallbacks = []
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78 includes = []
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79
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80 if not isinstance(source, Stream):
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81 source = XMLParser(source, filename=self.filename,
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82 encoding=encoding)
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83
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84 for kind, data, pos in source:
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85 stream = streams[-1]
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86
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87 if kind is START_NS:
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88 # Strip out the namespace declaration for template directives
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89 prefix, uri = data
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90 ns_prefix[prefix] = uri
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91 if uri not in (self.DIRECTIVE_NAMESPACE,
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92 self.XINCLUDE_NAMESPACE):
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93 stream.append((kind, data, pos))
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94
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95 elif kind is END_NS:
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96 uri = ns_prefix.pop(data, None)
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97 if uri and uri not in (self.DIRECTIVE_NAMESPACE,
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98 self.XINCLUDE_NAMESPACE):
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99 stream.append((kind, data, pos))
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100
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101 elif kind is START:
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102 # Record any directive attributes in start tags
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103 tag, attrs = data
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104 directives = []
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105 strip = False
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106
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107 if tag in self.DIRECTIVE_NAMESPACE:
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108 cls = self._dir_by_name.get(tag.localname)
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109 if cls is None:
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110 raise BadDirectiveError(tag.localname, self.filepath,
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111 pos[1])
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112 args = dict([(name.localname, value) for name, value
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113 in attrs if not name.namespace])
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114 directives.append((cls, args, ns_prefix.copy(), pos))
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115 strip = True
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116
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117 new_attrs = []
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118 for name, value in attrs:
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119 if name in self.DIRECTIVE_NAMESPACE:
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120 cls = self._dir_by_name.get(name.localname)
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121 if cls is None:
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122 raise BadDirectiveError(name.localname,
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123 self.filepath, pos[1])
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124 directives.append((cls, value, ns_prefix.copy(), pos))
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125 else:
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126 if value:
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127 value = list(interpolate(value, self.filepath,
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128 pos[1], pos[2],
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129 lookup=self.lookup))
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130 if len(value) == 1 and value[0][0] is TEXT:
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131 value = value[0][1]
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132 else:
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133 value = [(TEXT, u'', pos)]
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cmlenz
parents: 362
diff changeset
134 new_attrs.append((name, value))
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
135 new_attrs = Attrs(new_attrs)
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
136
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
137 if directives:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
138 index = self._dir_order.index
362
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method).
cmlenz
parents: 336
diff changeset
139 directives.sort(lambda a, b: cmp(index(a[0]), index(b[0])))
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
140 dirmap[(depth, tag)] = (directives, len(stream), strip)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
141
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
142 if tag in self.XINCLUDE_NAMESPACE:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
143 if tag.localname == 'include':
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
144 include_href = new_attrs.get('href')
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
145 if not include_href:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
146 raise TemplateSyntaxError('Include misses required '
422
5d08a744636e More work to include absolute file paths in exceptions.
cmlenz
parents: 421
diff changeset
147 'attribute "href"',
5d08a744636e More work to include absolute file paths in exceptions.
cmlenz
parents: 421
diff changeset
148 self.filepath, *pos[1:])
610
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
149 includes.append((include_href, new_attrs.get('parse')))
381
b9fc7a1f76ca Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
150 streams.append([])
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
151 elif tag.localname == 'fallback':
590
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
152 streams.append([])
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
153 fallbacks.append(streams[-1])
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
154
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
155 else:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
156 stream.append((kind, (tag, new_attrs), pos))
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
157
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
158 depth += 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
159
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
160 elif kind is END:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
161 depth -= 1
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
162
590
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
163 if fallbacks and data == self.XINCLUDE_NAMESPACE['fallback']:
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
164 assert streams.pop() is fallbacks[-1]
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
165 elif data == self.XINCLUDE_NAMESPACE['include']:
590
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
166 fallback = None
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
167 if len(fallbacks) == len(includes):
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
168 fallback = fallbacks.pop()
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
169 streams.pop() # discard anything between the include tags
36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
cmlenz
parents: 552
diff changeset
170 # and the fallback element
381
b9fc7a1f76ca Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
171 stream = streams[-1]
610
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
172 href, parse = includes.pop()
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
173 try:
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
174 cls = {
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
175 'xml': MarkupTemplate,
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
176 'text': NewTextTemplate
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
177 }[parse or 'xml']
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
178 except KeyError:
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
179 raise TemplateSyntaxError('Invalid value for "parse" '
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
180 'attribute of include',
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
181 self.filepath, *pos[1:])
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101).
cmlenz
parents: 609
diff changeset
182 stream.append((INCLUDE, (href, cls, fallback), pos))
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
183 else:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
parents: 362
diff changeset
184 stream.append((kind, data, pos))
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
185
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
186 # If there have have directive attributes with the corresponding
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
187 # start tag, move the events inbetween into a "subprogram"
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
188 if (depth, data) in dirmap:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
189 directives, start_offset, strip = dirmap.pop((depth, data))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
190 substream = stream[start_offset:]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
191 if strip:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
192 substream = substream[1:-1]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
193 stream[start_offset:] = [(SUB, (directives, substream),
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
194 pos)]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
195
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
196 elif kind is PI and data[0] == 'python':
545
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
197 if not self.allow_exec:
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
198 raise TemplateSyntaxError('Python code blocks not allowed',
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
199 self.filepath, *pos[1:])
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
200 try:
601
59fbd7586454 Simplify implementation of `py:with` directive by compiling to a `Suite`, instead of manually breaking up the statement and compiling each part to an `Expression`. Also, the first line of code in a `Suite` is now stored as the "function name" of the bytecode, so that it shows up in tracebacks.
cmlenz
parents: 590
diff changeset
201 suite = Suite(data[1], self.filepath, pos[1],
442
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option.
cmlenz
parents: 434
diff changeset
202 lookup=self.lookup)
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
203 except SyntaxError, err:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
204 raise TemplateSyntaxError(err, self.filepath,
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
205 pos[1] + (err.lineno or 1) - 1,
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
206 pos[2] + (err.offset or 0))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
207 stream.append((EXEC, suite, pos))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
208
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
209 elif kind is TEXT:
718
d143dd73789b update to trunk through r833
aflett
parents: 717
diff changeset
210 for kind, data, pos in interpolate(data, self.filepath, pos[1],
d143dd73789b update to trunk through r833
aflett
parents: 717
diff changeset
211 pos[2], lookup=self.lookup):
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
212 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
213
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
214 elif kind is COMMENT:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
215 if not data.lstrip().startswith('!'):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
216 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
217
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
218 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
219 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
220
381
b9fc7a1f76ca Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
221 assert len(streams) == 1
b9fc7a1f76ca Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
222 return streams[0]
b9fc7a1f76ca Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
223
703
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now
aflett
parents: 690
diff changeset
224 def _match(self, stream, ctxt, match_set=None, **vars):
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
225 """Internal stream filter that applies any defined match templates
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
226 to the stream.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
227 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
228 tail = []
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
229 def _strip(stream):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
230 depth = 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
231 while 1:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
232 event = stream.next()
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
233 if event[0] is START:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
234 depth += 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
235 elif event[0] is END:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
236 depth -= 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
237 if depth > 0:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
238 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
239 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
240 tail[:] = [event]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
241 break
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
242
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
243 for event in stream:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
244
717
0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf
aflett
parents: 704
diff changeset
245 # we may have discovered a py:match while processing the
0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf
aflett
parents: 704
diff changeset
246 # stream.. so keep checking for ctxt._match_set
0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf
aflett
parents: 704
diff changeset
247 if match_set is None:
0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf
aflett
parents: 704
diff changeset
248 match_set = ctxt._match_set
0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf
aflett
parents: 704
diff changeset
249
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
250 # We (currently) only care about start and end events for matching
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
251 # We might care about namespace events in the future, though
687
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
252 if not match_set or (event[0] is not START and
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
253 event[0] is not END):
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
254 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
255 continue
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
256
687
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
257 match_candidates = list(match_set.find_matches(event))
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
258 for idx, match_template in enumerate(match_candidates):
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
259
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
260 (test, path, template, hints, namespaces, directives) = \
3d7288f373bd land first cut at fast-path matching - needs some cleanup
aflett
parents: 650
diff changeset
261 match_template
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
262 if test(event, namespaces, ctxt) is True:
703
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now
aflett
parents: 690
diff changeset
263 post_match_templates = \
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now
aflett
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diff changeset
264 match_set.after_template(match_template)
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265
602
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266 if 'match_once' in hints:
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267
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268 # need to save this before we nuke
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269 # match_template from match_set
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270 pre_match_templates = \
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271 match_set.before_template(match_template, False)
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272
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273 # forcibly remove this template from this and
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274 # all child match sets
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275 match_set.remove(match_template)
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276 del match_candidates[idx]
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277 idx -= 1
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278 else:
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279 inclusive = True
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280 if 'not_recursive' in hints:
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281 inclusive=False
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282 pre_match_templates = match_set.before_template(match_template, inclusive)
336
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283
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284 # Let the remaining match templates know about the event so
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285 # they get a chance to update their internal state
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286 for test in [mt[0] for mt in match_candidates[idx + 1:]]:
336
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287 test(event, namespaces, ctxt, updateonly=True)
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288
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289 # Consume and store all events until an end event
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290 # corresponding to this start event is encountered
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291 inner = _strip(stream)
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292 if pre_match_templates:
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293 inner = self._match(inner, ctxt, pre_match_templates)
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294 content = self._include(chain([event], inner, tail), ctxt)
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295 if 'not_buffered' not in hints:
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296 content = list(content)
336
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297
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298 # Now tell all the match templates about the
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299 # END event (tail[0])
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300 if tail:
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301 for test in [mt[0] for mt in match_candidates]:
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302 test(tail[0], namespaces, ctxt, updateonly=True)
336
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303
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304 # Make the select() function available in the body of the
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305 # match template
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306 def select(path):
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307 return Stream(content).select(path, namespaces, ctxt)
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308 vars = dict(select=select)
336
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309
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310 # Recursively process the output
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311 template = _apply_directives(template, directives, ctxt,
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312 **vars)
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313 for event in self._match(
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314 self._exec(
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315 self._eval(
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316 self._flatten(template, ctxt, **vars),
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317 ctxt, **vars),
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318 ctxt, **vars),
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319 ctxt, post_match_templates,
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320 **vars):
336
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321 yield event
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322
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323 break
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324
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325 else: # no matches
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326 yield event
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