Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1 | # -*- coding: utf-8 -*- |
| 2 | """ |
| 3 | jinja2.compiler |
| 4 | ~~~~~~~~~~~~~~~ |
| 5 | |
| 6 | Compiles nodes into python code. |
| 7 | |
| 8 | :copyright: Copyright 2008 by Armin Ronacher. |
| 9 | :license: GNU GPL. |
| 10 | """ |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 11 | from time import time |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 12 | from copy import copy |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 13 | from random import randrange |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 14 | from keyword import iskeyword |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 15 | from cStringIO import StringIO |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 16 | from itertools import chain |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 17 | from jinja2 import nodes |
| 18 | from jinja2.visitor import NodeVisitor, NodeTransformer |
| 19 | from jinja2.exceptions import TemplateAssertionError |
Armin Ronacher | 7ceced5 | 2008-05-03 10:15:31 +0200 | [diff] [blame] | 20 | from jinja2.utils import Markup, concat |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 21 | |
| 22 | |
| 23 | operators = { |
| 24 | 'eq': '==', |
| 25 | 'ne': '!=', |
| 26 | 'gt': '>', |
| 27 | 'gteq': '>=', |
| 28 | 'lt': '<', |
| 29 | 'lteq': '<=', |
| 30 | 'in': 'in', |
| 31 | 'notin': 'not in' |
| 32 | } |
| 33 | |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 34 | try: |
| 35 | exec '(0 if 0 else 0)' |
| 36 | except SyntaxError: |
| 37 | have_condexpr = False |
| 38 | else: |
| 39 | have_condexpr = True |
| 40 | |
| 41 | |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 42 | def generate(node, environment, name, filename, stream=None): |
Armin Ronacher | bcb7c53 | 2008-04-11 16:30:34 +0200 | [diff] [blame] | 43 | """Generate the python source for a node tree.""" |
Armin Ronacher | 023b5e9 | 2008-05-08 11:03:10 +0200 | [diff] [blame] | 44 | if not isinstance(node, nodes.Template): |
| 45 | raise TypeError('Can\'t compile non template nodes') |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 46 | generator = CodeGenerator(environment, name, filename, stream) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 47 | generator.visit(node) |
| 48 | if stream is None: |
| 49 | return generator.stream.getvalue() |
| 50 | |
| 51 | |
Armin Ronacher | 4dfc975 | 2008-04-09 15:03:29 +0200 | [diff] [blame] | 52 | def has_safe_repr(value): |
| 53 | """Does the node have a safe representation?""" |
Armin Ronacher | d55ab53 | 2008-04-09 16:13:39 +0200 | [diff] [blame] | 54 | if value is None or value is NotImplemented or value is Ellipsis: |
Armin Ronacher | 4dfc975 | 2008-04-09 15:03:29 +0200 | [diff] [blame] | 55 | return True |
Armin Ronacher | d55ab53 | 2008-04-09 16:13:39 +0200 | [diff] [blame] | 56 | if isinstance(value, (bool, int, long, float, complex, basestring, |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 57 | xrange, Markup)): |
Armin Ronacher | 4dfc975 | 2008-04-09 15:03:29 +0200 | [diff] [blame] | 58 | return True |
Armin Ronacher | d55ab53 | 2008-04-09 16:13:39 +0200 | [diff] [blame] | 59 | if isinstance(value, (tuple, list, set, frozenset)): |
Armin Ronacher | 4dfc975 | 2008-04-09 15:03:29 +0200 | [diff] [blame] | 60 | for item in value: |
| 61 | if not has_safe_repr(item): |
| 62 | return False |
| 63 | return True |
| 64 | elif isinstance(value, dict): |
| 65 | for key, value in value.iteritems(): |
| 66 | if not has_safe_repr(key): |
| 67 | return False |
| 68 | if not has_safe_repr(value): |
| 69 | return False |
| 70 | return True |
| 71 | return False |
| 72 | |
| 73 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 74 | def find_undeclared(nodes, names): |
| 75 | """Check if the names passed are accessed undeclared. The return value |
| 76 | is a set of all the undeclared names from the sequence of names found. |
| 77 | """ |
| 78 | visitor = UndeclaredNameVisitor(names) |
| 79 | try: |
| 80 | for node in nodes: |
| 81 | visitor.visit(node) |
| 82 | except VisitorExit: |
| 83 | pass |
| 84 | return visitor.undeclared |
| 85 | |
| 86 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 87 | class Identifiers(object): |
| 88 | """Tracks the status of identifiers in frames.""" |
| 89 | |
| 90 | def __init__(self): |
| 91 | # variables that are known to be declared (probably from outer |
| 92 | # frames or because they are special for the frame) |
| 93 | self.declared = set() |
| 94 | |
Armin Ronacher | 10f3ba2 | 2008-04-18 11:30:37 +0200 | [diff] [blame] | 95 | # undeclared variables from outer scopes |
| 96 | self.outer_undeclared = set() |
| 97 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 98 | # names that are accessed without being explicitly declared by |
| 99 | # this one or any of the outer scopes. Names can appear both in |
| 100 | # declared and undeclared. |
| 101 | self.undeclared = set() |
| 102 | |
| 103 | # names that are declared locally |
| 104 | self.declared_locally = set() |
| 105 | |
| 106 | # names that are declared by parameters |
| 107 | self.declared_parameter = set() |
| 108 | |
| 109 | def add_special(self, name): |
| 110 | """Register a special name like `loop`.""" |
| 111 | self.undeclared.discard(name) |
| 112 | self.declared.add(name) |
| 113 | |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 114 | def is_declared(self, name, local_only=False): |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 115 | """Check if a name is declared in this or an outer scope.""" |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 116 | if name in self.declared_locally or name in self.declared_parameter: |
| 117 | return True |
| 118 | if local_only: |
| 119 | return False |
| 120 | return name in self.declared |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 121 | |
| 122 | def find_shadowed(self): |
| 123 | """Find all the shadowed names.""" |
Armin Ronacher | 10f3ba2 | 2008-04-18 11:30:37 +0200 | [diff] [blame] | 124 | return (self.declared | self.outer_undeclared) & \ |
| 125 | (self.declared_locally | self.declared_parameter) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 126 | |
| 127 | |
| 128 | class Frame(object): |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 129 | """Holds compile time information for us.""" |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 130 | |
| 131 | def __init__(self, parent=None): |
| 132 | self.identifiers = Identifiers() |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 133 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 134 | # a toplevel frame is the root + soft frames such as if conditions. |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 135 | self.toplevel = False |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 136 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 137 | # the root frame is basically just the outermost frame, so no if |
| 138 | # conditions. This information is used to optimize inheritance |
| 139 | # situations. |
| 140 | self.rootlevel = False |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 141 | |
| 142 | # inside some tags we are using a buffer rather than yield statements. |
| 143 | # this for example affects {% filter %} or {% macro %}. If a frame |
| 144 | # is buffered this variable points to the name of the list used as |
| 145 | # buffer. |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 146 | self.buffer = None |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 147 | |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 148 | # the name of the block we're in, otherwise None. |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 149 | self.block = parent and parent.block or None |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 150 | |
| 151 | # the parent of this frame |
| 152 | self.parent = parent |
| 153 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 154 | if parent is not None: |
| 155 | self.identifiers.declared.update( |
| 156 | parent.identifiers.declared | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 157 | parent.identifiers.declared_locally | |
| 158 | parent.identifiers.declared_parameter |
| 159 | ) |
Armin Ronacher | 10f3ba2 | 2008-04-18 11:30:37 +0200 | [diff] [blame] | 160 | self.identifiers.outer_undeclared.update( |
| 161 | parent.identifiers.undeclared - |
| 162 | self.identifiers.declared |
| 163 | ) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 164 | self.buffer = parent.buffer |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 165 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 166 | def copy(self): |
| 167 | """Create a copy of the current one.""" |
| 168 | rv = copy(self) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 169 | rv.identifiers = copy(self.identifiers) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 170 | return rv |
| 171 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 172 | def inspect(self, nodes, hard_scope=False): |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 173 | """Walk the node and check for identifiers. If the scope is hard (eg: |
| 174 | enforce on a python level) overrides from outer scopes are tracked |
| 175 | differently. |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 176 | """ |
| 177 | visitor = FrameIdentifierVisitor(self.identifiers, hard_scope) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 178 | for node in nodes: |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 179 | visitor.visit(node) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 180 | |
| 181 | def inner(self): |
| 182 | """Return an inner frame.""" |
| 183 | return Frame(self) |
| 184 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 185 | def soft(self): |
| 186 | """Return a soft frame. A soft frame may not be modified as |
| 187 | standalone thing as it shares the resources with the frame it |
| 188 | was created of, but it's not a rootlevel frame any longer. |
| 189 | """ |
| 190 | rv = copy(self) |
| 191 | rv.rootlevel = False |
| 192 | return rv |
| 193 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 194 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 195 | class VisitorExit(RuntimeError): |
| 196 | """Exception used by the `UndeclaredNameVisitor` to signal a stop.""" |
| 197 | |
| 198 | |
| 199 | class DependencyFinderVisitor(NodeVisitor): |
| 200 | """A visitor that collects filter and test calls.""" |
| 201 | |
| 202 | def __init__(self): |
| 203 | self.filters = set() |
| 204 | self.tests = set() |
| 205 | |
| 206 | def visit_Filter(self, node): |
| 207 | self.generic_visit(node) |
| 208 | self.filters.add(node.name) |
| 209 | |
| 210 | def visit_Test(self, node): |
| 211 | self.generic_visit(node) |
| 212 | self.tests.add(node.name) |
| 213 | |
| 214 | def visit_Block(self, node): |
| 215 | """Stop visiting at blocks.""" |
| 216 | |
| 217 | |
| 218 | class UndeclaredNameVisitor(NodeVisitor): |
| 219 | """A visitor that checks if a name is accessed without being |
| 220 | declared. This is different from the frame visitor as it will |
| 221 | not stop at closure frames. |
| 222 | """ |
| 223 | |
| 224 | def __init__(self, names): |
| 225 | self.names = set(names) |
| 226 | self.undeclared = set() |
| 227 | |
| 228 | def visit_Name(self, node): |
| 229 | if node.ctx == 'load' and node.name in self.names: |
| 230 | self.undeclared.add(node.name) |
| 231 | if self.undeclared == self.names: |
| 232 | raise VisitorExit() |
| 233 | else: |
| 234 | self.names.discard(node.name) |
| 235 | |
| 236 | def visit_Block(self, node): |
| 237 | """Stop visiting a blocks.""" |
| 238 | |
| 239 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 240 | class FrameIdentifierVisitor(NodeVisitor): |
| 241 | """A visitor for `Frame.inspect`.""" |
| 242 | |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 243 | def __init__(self, identifiers, hard_scope): |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 244 | self.identifiers = identifiers |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 245 | self.hard_scope = hard_scope |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 246 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 247 | def visit_Name(self, node): |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 248 | """All assignments to names go through this function.""" |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 249 | if node.ctx in ('store', 'param'): |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 250 | self.identifiers.declared_locally.add(node.name) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 251 | elif node.ctx == 'load' and not \ |
| 252 | self.identifiers.is_declared(node.name, self.hard_scope): |
| 253 | self.identifiers.undeclared.add(node.name) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 254 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 255 | def visit_Macro(self, node): |
| 256 | self.generic_visit(node) |
| 257 | self.identifiers.declared_locally.add(node.name) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 258 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 259 | def visit_Import(self, node): |
| 260 | self.generic_visit(node) |
| 261 | self.identifiers.declared_locally.add(node.target) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 262 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 263 | def visit_FromImport(self, node): |
| 264 | self.generic_visit(node) |
| 265 | for name in node.names: |
| 266 | if isinstance(name, tuple): |
| 267 | self.identifiers.declared_locally.add(name[1]) |
| 268 | else: |
| 269 | self.identifiers.declared_locally.add(name) |
| 270 | |
| 271 | def visit_Assign(self, node): |
Armin Ronacher | ebe55aa | 2008-04-10 20:51:23 +0200 | [diff] [blame] | 272 | """Visit assignments in the correct order.""" |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 273 | self.visit(node.node) |
| 274 | self.visit(node.target) |
Armin Ronacher | ebe55aa | 2008-04-10 20:51:23 +0200 | [diff] [blame] | 275 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 276 | def visit_For(self, node): |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 277 | """Visiting stops at for blocks. However the block sequence |
| 278 | is visited as part of the outer scope. |
| 279 | """ |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 280 | self.visit(node.iter) |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 281 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 282 | def visit_CallBlock(self, node): |
| 283 | for child in node.iter_child_nodes(exclude=('body',)): |
| 284 | self.visit(child) |
| 285 | |
| 286 | def visit_FilterBlock(self, node): |
| 287 | self.visit(node.filter) |
| 288 | |
| 289 | def visit_Block(self, node): |
| 290 | """Stop visiting at blocks.""" |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 291 | |
| 292 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 293 | class CompilerExit(Exception): |
| 294 | """Raised if the compiler encountered a situation where it just |
| 295 | doesn't make sense to further process the code. Any block that |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 296 | raises such an exception is not further processed. |
| 297 | """ |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 298 | |
| 299 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 300 | class CodeGenerator(NodeVisitor): |
| 301 | |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 302 | def __init__(self, environment, name, filename, stream=None): |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 303 | if stream is None: |
| 304 | stream = StringIO() |
Christoph Hack | 65642a5 | 2008-04-08 14:46:56 +0200 | [diff] [blame] | 305 | self.environment = environment |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 306 | self.name = name |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 307 | self.filename = filename |
| 308 | self.stream = stream |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 309 | |
Armin Ronacher | 023b5e9 | 2008-05-08 11:03:10 +0200 | [diff] [blame] | 310 | # aliases for imports |
| 311 | self.import_aliases = {} |
| 312 | |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 313 | # a registry for all blocks. Because blocks are moved out |
| 314 | # into the global python scope they are registered here |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 315 | self.blocks = {} |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 316 | |
| 317 | # the number of extends statements so far |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 318 | self.extends_so_far = 0 |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 319 | |
| 320 | # some templates have a rootlevel extends. In this case we |
| 321 | # can safely assume that we're a child template and do some |
| 322 | # more optimizations. |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 323 | self.has_known_extends = False |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 324 | |
Armin Ronacher | ba3757b | 2008-04-16 19:43:16 +0200 | [diff] [blame] | 325 | # the current line number |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 326 | self.code_lineno = 1 |
Armin Ronacher | ba3757b | 2008-04-16 19:43:16 +0200 | [diff] [blame] | 327 | |
Armin Ronacher | b9e7875 | 2008-05-10 23:36:28 +0200 | [diff] [blame] | 328 | # registry of all filters and tests (global, not block local) |
| 329 | self.tests = {} |
| 330 | self.filters = {} |
| 331 | |
Armin Ronacher | ba3757b | 2008-04-16 19:43:16 +0200 | [diff] [blame] | 332 | # the debug information |
| 333 | self.debug_info = [] |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 334 | self._write_debug_info = None |
Armin Ronacher | ba3757b | 2008-04-16 19:43:16 +0200 | [diff] [blame] | 335 | |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 336 | # the number of new lines before the next write() |
| 337 | self._new_lines = 0 |
| 338 | |
| 339 | # the line number of the last written statement |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 340 | self._last_line = 0 |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 341 | |
| 342 | # true if nothing was written so far. |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 343 | self._first_write = True |
| 344 | |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 345 | # used by the `temporary_identifier` method to get new |
| 346 | # unique, temporary identifier |
| 347 | self._last_identifier = 0 |
| 348 | |
| 349 | # the current indentation |
| 350 | self._indentation = 0 |
| 351 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 352 | def temporary_identifier(self): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 353 | """Get a new unique identifier.""" |
| 354 | self._last_identifier += 1 |
| 355 | return 't%d' % self._last_identifier |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 356 | |
| 357 | def indent(self): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 358 | """Indent by one.""" |
| 359 | self._indentation += 1 |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 360 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 361 | def outdent(self, step=1): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 362 | """Outdent by step.""" |
| 363 | self._indentation -= step |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 364 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 365 | def blockvisit(self, nodes, frame, force_generator=True): |
| 366 | """Visit a list of nodes as block in a frame. If the current frame |
| 367 | is no buffer a dummy ``if 0: yield None`` is written automatically |
| 368 | unless the force_generator parameter is set to False. |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 369 | """ |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 370 | if frame.buffer is None and force_generator: |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 371 | self.writeline('if 0: yield None') |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 372 | try: |
| 373 | for node in nodes: |
| 374 | self.visit(node, frame) |
| 375 | except CompilerExit: |
| 376 | pass |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 377 | |
| 378 | def write(self, x): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 379 | """Write a string into the output stream.""" |
| 380 | if self._new_lines: |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 381 | if not self._first_write: |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 382 | self.stream.write('\n' * self._new_lines) |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 383 | self.code_lineno += self._new_lines |
| 384 | if self._write_debug_info is not None: |
| 385 | self.debug_info.append((self._write_debug_info, |
| 386 | self.code_lineno)) |
| 387 | self._write_debug_info = None |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 388 | self._first_write = False |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 389 | self.stream.write(' ' * self._indentation) |
| 390 | self._new_lines = 0 |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 391 | self.stream.write(x) |
| 392 | |
| 393 | def writeline(self, x, node=None, extra=0): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 394 | """Combination of newline and write.""" |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 395 | self.newline(node, extra) |
| 396 | self.write(x) |
| 397 | |
| 398 | def newline(self, node=None, extra=0): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 399 | """Add one or more newlines before the next write.""" |
| 400 | self._new_lines = max(self._new_lines, 1 + extra) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 401 | if node is not None and node.lineno != self._last_line: |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 402 | self._write_debug_info = node.lineno |
| 403 | self._last_line = node.lineno |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 404 | |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 405 | def signature(self, node, frame, have_comma=True, extra_kwargs=None): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 406 | """Writes a function call to the stream for the current node. |
| 407 | Per default it will write a leading comma but this can be |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 408 | disabled by setting have_comma to False. The extra keyword |
| 409 | arguments may not include python keywords otherwise a syntax |
| 410 | error could occour. The extra keyword arguments should be given |
| 411 | as python dict. |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 412 | """ |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 413 | have_comma = have_comma and [True] or [] |
| 414 | def touch_comma(): |
| 415 | if have_comma: |
| 416 | self.write(', ') |
| 417 | else: |
| 418 | have_comma.append(True) |
| 419 | |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 420 | # if any of the given keyword arguments is a python keyword |
| 421 | # we have to make sure that no invalid call is created. |
| 422 | kwarg_workaround = False |
| 423 | for kwarg in chain((x.key for x in node.kwargs), extra_kwargs or ()): |
| 424 | if iskeyword(kwarg): |
| 425 | kwarg_workaround = True |
| 426 | break |
| 427 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 428 | for arg in node.args: |
| 429 | touch_comma() |
| 430 | self.visit(arg, frame) |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 431 | |
| 432 | if not kwarg_workaround: |
| 433 | for kwarg in node.kwargs: |
| 434 | touch_comma() |
| 435 | self.visit(kwarg, frame) |
| 436 | if extra_kwargs is not None: |
| 437 | for key, value in extra_kwargs.iteritems(): |
| 438 | touch_comma() |
| 439 | self.write('%s=%s' % (key, value)) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 440 | if node.dyn_args: |
| 441 | touch_comma() |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 442 | self.write('*') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 443 | self.visit(node.dyn_args, frame) |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 444 | |
| 445 | if kwarg_workaround: |
| 446 | touch_comma() |
| 447 | if node.dyn_kwargs is not None: |
| 448 | self.write('**dict({') |
| 449 | else: |
| 450 | self.write('**{') |
| 451 | for kwarg in node.kwargs: |
| 452 | self.write('%r: ' % kwarg.key) |
| 453 | self.visit(kwarg.value, frame) |
| 454 | self.write(', ') |
| 455 | if extra_kwargs is not None: |
| 456 | for key, value in extra_kwargs.iteritems(): |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 457 | self.write('%r: %s, ' % (key, value)) |
| 458 | if node.dyn_kwargs is not None: |
| 459 | self.write('}, **') |
| 460 | self.visit(node.dyn_kwargs, frame) |
| 461 | self.write(')') |
| 462 | else: |
| 463 | self.write('}') |
| 464 | |
| 465 | elif node.dyn_kwargs is not None: |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 466 | touch_comma() |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 467 | self.write('**') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 468 | self.visit(node.dyn_kwargs, frame) |
| 469 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 470 | def pull_locals(self, frame): |
| 471 | """Pull all the references identifiers into the local scope.""" |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 472 | for name in frame.identifiers.undeclared: |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 473 | self.writeline('l_%s = context.resolve(%r)' % (name, name)) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 474 | |
| 475 | def pull_dependencies(self, nodes): |
| 476 | """Pull all the dependencies.""" |
| 477 | visitor = DependencyFinderVisitor() |
| 478 | for node in nodes: |
| 479 | visitor.visit(node) |
Armin Ronacher | b9e7875 | 2008-05-10 23:36:28 +0200 | [diff] [blame] | 480 | for dependency in 'filters', 'tests': |
| 481 | mapping = getattr(self, dependency) |
| 482 | for name in getattr(visitor, dependency): |
| 483 | if name not in mapping: |
| 484 | mapping[name] = self.temporary_identifier() |
| 485 | self.writeline('%s = environment.%s[%r]' % |
| 486 | (mapping[name], dependency, name)) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 487 | |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 488 | def collect_shadowed(self, frame): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 489 | """This function returns all the shadowed variables in a dict |
| 490 | in the form name: alias and will write the required assignments |
| 491 | into the current scope. No indentation takes place. |
| 492 | """ |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 493 | # make sure we "backup" overridden, local identifiers |
| 494 | # TODO: we should probably optimize this and check if the |
| 495 | # identifier is in use afterwards. |
| 496 | aliases = {} |
| 497 | for name in frame.identifiers.find_shadowed(): |
| 498 | aliases[name] = ident = self.temporary_identifier() |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 499 | self.writeline('%s = l_%s' % (ident, name)) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 500 | return aliases |
| 501 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 502 | def function_scoping(self, node, frame, children=None): |
Armin Ronacher | fed44b5 | 2008-04-13 19:42:53 +0200 | [diff] [blame] | 503 | """In Jinja a few statements require the help of anonymous |
| 504 | functions. Those are currently macros and call blocks and in |
| 505 | the future also recursive loops. As there is currently |
| 506 | technical limitation that doesn't allow reading and writing a |
| 507 | variable in a scope where the initial value is coming from an |
| 508 | outer scope, this function tries to fall back with a common |
| 509 | error message. Additionally the frame passed is modified so |
| 510 | that the argumetns are collected and callers are looked up. |
| 511 | |
| 512 | This will return the modified frame. |
| 513 | """ |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 514 | # we have to iterate twice over it, make sure that works |
| 515 | if children is None: |
| 516 | children = node.iter_child_nodes() |
| 517 | children = list(children) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 518 | func_frame = frame.inner() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 519 | func_frame.inspect(children, hard_scope=True) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 520 | |
| 521 | # variables that are undeclared (accessed before declaration) and |
| 522 | # declared locally *and* part of an outside scope raise a template |
| 523 | # assertion error. Reason: we can't generate reasonable code from |
| 524 | # it without aliasing all the variables. XXX: alias them ^^ |
| 525 | overriden_closure_vars = ( |
| 526 | func_frame.identifiers.undeclared & |
| 527 | func_frame.identifiers.declared & |
| 528 | (func_frame.identifiers.declared_locally | |
| 529 | func_frame.identifiers.declared_parameter) |
| 530 | ) |
| 531 | if overriden_closure_vars: |
| 532 | vars = ', '.join(sorted(overriden_closure_vars)) |
| 533 | raise TemplateAssertionError('It\'s not possible to set and ' |
| 534 | 'access variables derived from ' |
| 535 | 'an outer scope! (affects: %s' % |
Armin Ronacher | 68f7767 | 2008-04-17 11:50:39 +0200 | [diff] [blame] | 536 | vars, node.lineno, self.name) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 537 | |
| 538 | # remove variables from a closure from the frame's undeclared |
| 539 | # identifiers. |
| 540 | func_frame.identifiers.undeclared -= ( |
| 541 | func_frame.identifiers.undeclared & |
| 542 | func_frame.identifiers.declared |
| 543 | ) |
| 544 | |
Armin Ronacher | 963f97d | 2008-04-25 11:44:59 +0200 | [diff] [blame] | 545 | func_frame.accesses_kwargs = False |
| 546 | func_frame.accesses_varargs = False |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 547 | func_frame.accesses_caller = False |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 548 | func_frame.arguments = args = ['l_' + x.name for x in node.args] |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 549 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 550 | undeclared = find_undeclared(children, ('caller', 'kwargs', 'varargs')) |
| 551 | |
| 552 | if 'caller' in undeclared: |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 553 | func_frame.accesses_caller = True |
| 554 | func_frame.identifiers.add_special('caller') |
| 555 | args.append('l_caller') |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 556 | if 'kwargs' in undeclared: |
Armin Ronacher | 963f97d | 2008-04-25 11:44:59 +0200 | [diff] [blame] | 557 | func_frame.accesses_kwargs = True |
| 558 | func_frame.identifiers.add_special('kwargs') |
| 559 | args.append('l_kwargs') |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 560 | if 'varargs' in undeclared: |
Armin Ronacher | 963f97d | 2008-04-25 11:44:59 +0200 | [diff] [blame] | 561 | func_frame.accesses_varargs = True |
| 562 | func_frame.identifiers.add_special('varargs') |
| 563 | args.append('l_varargs') |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 564 | return func_frame |
| 565 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 566 | # -- Visitors |
| 567 | |
| 568 | def visit_Template(self, node, frame=None): |
| 569 | assert frame is None, 'no root frame allowed' |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 570 | from jinja2.runtime import __all__ as exported |
Armin Ronacher | 709f6e5 | 2008-04-28 18:18:16 +0200 | [diff] [blame] | 571 | self.writeline('from __future__ import division') |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 572 | self.writeline('from jinja2.runtime import ' + ', '.join(exported)) |
Armin Ronacher | 8edbe49 | 2008-04-10 20:43:43 +0200 | [diff] [blame] | 573 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 574 | # do we have an extends tag at all? If not, we can save some |
| 575 | # overhead by just not processing any inheritance code. |
| 576 | have_extends = node.find(nodes.Extends) is not None |
| 577 | |
Armin Ronacher | 8edbe49 | 2008-04-10 20:43:43 +0200 | [diff] [blame] | 578 | # find all blocks |
| 579 | for block in node.find_all(nodes.Block): |
| 580 | if block.name in self.blocks: |
| 581 | raise TemplateAssertionError('block %r defined twice' % |
| 582 | block.name, block.lineno, |
Armin Ronacher | 68f7767 | 2008-04-17 11:50:39 +0200 | [diff] [blame] | 583 | self.name) |
Armin Ronacher | 8edbe49 | 2008-04-10 20:43:43 +0200 | [diff] [blame] | 584 | self.blocks[block.name] = block |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 585 | |
Armin Ronacher | 023b5e9 | 2008-05-08 11:03:10 +0200 | [diff] [blame] | 586 | # find all imports and import them |
| 587 | for import_ in node.find_all(nodes.ImportedName): |
| 588 | if import_.importname not in self.import_aliases: |
| 589 | imp = import_.importname |
| 590 | self.import_aliases[imp] = alias = self.temporary_identifier() |
| 591 | if '.' in imp: |
| 592 | module, obj = imp.rsplit('.', 1) |
| 593 | self.writeline('from %s import %s as %s' % |
| 594 | (module, obj, alias)) |
| 595 | else: |
| 596 | self.writeline('import %s as %s' % (imp, alias)) |
| 597 | |
| 598 | # add the load name |
| 599 | self.writeline('name = %r' % self.name) |
| 600 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 601 | # generate the root render function. |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 602 | self.writeline('def root(context, environment=environment):', extra=1) |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 603 | |
| 604 | # process the root |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 605 | frame = Frame() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 606 | frame.inspect(node.body) |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 607 | frame.toplevel = frame.rootlevel = True |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 608 | self.indent() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 609 | if have_extends: |
| 610 | self.writeline('parent_template = None') |
| 611 | self.pull_locals(frame) |
| 612 | self.pull_dependencies(node.body) |
| 613 | if 'self' in find_undeclared(node.body, ('self',)): |
| 614 | frame.identifiers.add_special('self') |
| 615 | self.writeline('l_self = TemplateReference(context)') |
| 616 | self.blockvisit(node.body, frame) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 617 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 618 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 619 | # make sure that the parent root is called. |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 620 | if have_extends: |
| 621 | if not self.has_known_extends: |
| 622 | self.indent() |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 623 | self.writeline('if parent_template is not None:') |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 624 | self.indent() |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 625 | self.writeline('for event in parent_template.' |
| 626 | 'root_render_func(context):') |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 627 | self.indent() |
| 628 | self.writeline('yield event') |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 629 | self.outdent(2 + (not self.has_known_extends)) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 630 | |
| 631 | # at this point we now have the blocks collected and can visit them too. |
| 632 | for name, block in self.blocks.iteritems(): |
| 633 | block_frame = Frame() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 634 | block_frame.inspect(block.body) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 635 | block_frame.block = name |
Armin Ronacher | d4c64f7 | 2008-04-11 17:15:29 +0200 | [diff] [blame] | 636 | self.writeline('def block_%s(context, environment=environment):' |
| 637 | % name, block, 1) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 638 | self.indent() |
| 639 | undeclared = find_undeclared(block.body, ('self', 'super')) |
| 640 | if 'self' in undeclared: |
| 641 | block_frame.identifiers.add_special('self') |
| 642 | self.writeline('l_self = TemplateReference(context)') |
| 643 | if 'super' in undeclared: |
| 644 | block_frame.identifiers.add_special('super') |
| 645 | self.writeline('l_super = context.super(%r, ' |
| 646 | 'block_%s)' % (name, name)) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 647 | self.pull_locals(block_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 648 | self.pull_dependencies(block.body) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 649 | self.blockvisit(block.body, block_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 650 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 651 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 652 | self.writeline('blocks = {%s}' % ', '.join('%r: block_%s' % (x, x) |
Armin Ronacher | ba3757b | 2008-04-16 19:43:16 +0200 | [diff] [blame] | 653 | for x in self.blocks), |
| 654 | extra=1) |
| 655 | |
| 656 | # add a function that returns the debug info |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 657 | self.writeline('debug_info = %r' % '&'.join('%s=%s' % x for x |
| 658 | in self.debug_info)) |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 659 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 660 | def visit_Block(self, node, frame): |
| 661 | """Call a block and register it for the template.""" |
Armin Ronacher | 41ef36f | 2008-04-11 19:55:08 +0200 | [diff] [blame] | 662 | level = 1 |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 663 | if frame.toplevel: |
Armin Ronacher | bcb7c53 | 2008-04-11 16:30:34 +0200 | [diff] [blame] | 664 | # if we know that we are a child template, there is no need to |
| 665 | # check if we are one |
| 666 | if self.has_known_extends: |
| 667 | return |
Armin Ronacher | 41ef36f | 2008-04-11 19:55:08 +0200 | [diff] [blame] | 668 | if self.extends_so_far > 0: |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 669 | self.writeline('if parent_template is None:') |
Armin Ronacher | 41ef36f | 2008-04-11 19:55:08 +0200 | [diff] [blame] | 670 | self.indent() |
| 671 | level += 1 |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 672 | self.writeline('for event in context.blocks[%r][-1](context):' % |
| 673 | node.name, node) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 674 | self.indent() |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 675 | if frame.buffer is None: |
| 676 | self.writeline('yield event') |
| 677 | else: |
| 678 | self.writeline('%s.append(event)' % frame.buffer) |
Armin Ronacher | 41ef36f | 2008-04-11 19:55:08 +0200 | [diff] [blame] | 679 | self.outdent(level) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 680 | |
| 681 | def visit_Extends(self, node, frame): |
| 682 | """Calls the extender.""" |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 683 | if not frame.toplevel: |
| 684 | raise TemplateAssertionError('cannot use extend from a non ' |
| 685 | 'top-level scope', node.lineno, |
Armin Ronacher | 68f7767 | 2008-04-17 11:50:39 +0200 | [diff] [blame] | 686 | self.name) |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 687 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 688 | # if the number of extends statements in general is zero so |
| 689 | # far, we don't have to add a check if something extended |
| 690 | # the template before this one. |
| 691 | if self.extends_so_far > 0: |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 692 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 693 | # if we have a known extends we just add a template runtime |
| 694 | # error into the generated code. We could catch that at compile |
| 695 | # time too, but i welcome it not to confuse users by throwing the |
| 696 | # same error at different times just "because we can". |
| 697 | if not self.has_known_extends: |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 698 | self.writeline('if parent_template is not None:') |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 699 | self.indent() |
| 700 | self.writeline('raise TemplateRuntimeError(%r)' % |
| 701 | 'extended multiple times') |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 702 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 703 | # if we have a known extends already we don't need that code here |
| 704 | # as we know that the template execution will end here. |
| 705 | if self.has_known_extends: |
| 706 | raise CompilerExit() |
| 707 | self.outdent() |
| 708 | |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 709 | self.writeline('parent_template = environment.get_template(', node, 1) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 710 | self.visit(node.template, frame) |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 711 | self.write(', %r)' % self.name) |
| 712 | self.writeline('for name, parent_block in parent_template.' |
| 713 | 'blocks.iteritems():') |
| 714 | self.indent() |
| 715 | self.writeline('context.blocks.setdefault(name, []).' |
| 716 | 'insert(0, parent_block)') |
| 717 | self.outdent() |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 718 | |
| 719 | # if this extends statement was in the root level we can take |
| 720 | # advantage of that information and simplify the generated code |
| 721 | # in the top level from this point onwards |
| 722 | self.has_known_extends = True |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 723 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 724 | # and now we have one more |
| 725 | self.extends_so_far += 1 |
| 726 | |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 727 | def visit_Include(self, node, frame): |
| 728 | """Handles includes.""" |
Armin Ronacher | ea847c5 | 2008-05-02 20:04:32 +0200 | [diff] [blame] | 729 | if node.with_context: |
| 730 | self.writeline('template = environment.get_template(', node) |
| 731 | self.visit(node.template, frame) |
| 732 | self.write(', %r)' % self.name) |
| 733 | self.writeline('for event in template.root_render_func(' |
| 734 | 'template.new_context(context.parent, True)):') |
| 735 | else: |
| 736 | self.writeline('for event in environment.get_template(', node) |
| 737 | self.visit(node.template, frame) |
| 738 | self.write(', %r).module._TemplateModule__body_stream:' % |
| 739 | self.name) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 740 | self.indent() |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 741 | if frame.buffer is None: |
| 742 | self.writeline('yield event') |
| 743 | else: |
| 744 | self.writeline('%s.append(event)' % frame.buffer) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 745 | self.outdent() |
| 746 | |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 747 | def visit_Import(self, node, frame): |
| 748 | """Visit regular imports.""" |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 749 | self.writeline('l_%s = ' % node.target, node) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 750 | if frame.toplevel: |
Armin Ronacher | 5304229 | 2008-04-26 18:30:19 +0200 | [diff] [blame] | 751 | self.write('context.vars[%r] = ' % node.target) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 752 | self.write('environment.get_template(') |
| 753 | self.visit(node.template, frame) |
Armin Ronacher | ea847c5 | 2008-05-02 20:04:32 +0200 | [diff] [blame] | 754 | self.write(', %r).' % self.name) |
| 755 | if node.with_context: |
| 756 | self.write('make_module(context.parent, True)') |
| 757 | else: |
| 758 | self.write('module') |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 759 | if frame.toplevel and not node.target.startswith('__'): |
Armin Ronacher | 5304229 | 2008-04-26 18:30:19 +0200 | [diff] [blame] | 760 | self.writeline('context.exported_vars.discard(%r)' % node.target) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 761 | |
| 762 | def visit_FromImport(self, node, frame): |
| 763 | """Visit named imports.""" |
| 764 | self.newline(node) |
| 765 | self.write('included_template = environment.get_template(') |
| 766 | self.visit(node.template, frame) |
Armin Ronacher | ea847c5 | 2008-05-02 20:04:32 +0200 | [diff] [blame] | 767 | self.write(', %r).' % self.name) |
| 768 | if node.with_context: |
| 769 | self.write('make_module(context.parent, True)') |
| 770 | else: |
| 771 | self.write('module') |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 772 | for name in node.names: |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 773 | if isinstance(name, tuple): |
| 774 | name, alias = name |
| 775 | else: |
| 776 | alias = name |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 777 | self.writeline('l_%s = getattr(included_template, ' |
| 778 | '%r, missing)' % (alias, name)) |
| 779 | self.writeline('if l_%s is missing:' % alias) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 780 | self.indent() |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 781 | self.writeline('l_%s = environment.undefined(%r %% ' |
Armin Ronacher | 19cf9c2 | 2008-05-01 12:49:53 +0200 | [diff] [blame] | 782 | 'included_template.name, ' |
| 783 | 'name=included_template.name)' % |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 784 | (alias, 'the template %r does not export ' |
| 785 | 'the requested name ' + repr(name))) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 786 | self.outdent() |
| 787 | if frame.toplevel: |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 788 | self.writeline('context.vars[%r] = l_%s' % (alias, alias)) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 789 | if not alias.startswith('__'): |
| 790 | self.writeline('context.exported_vars.discard(%r)' % alias) |
Armin Ronacher | f059ec1 | 2008-04-11 22:21:00 +0200 | [diff] [blame] | 791 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 792 | def visit_For(self, node, frame): |
| 793 | loop_frame = frame.inner() |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 794 | loop_frame.inspect(node.iter_child_nodes(exclude=('iter',))) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 795 | extended_loop = bool(node.else_) or \ |
| 796 | 'loop' in loop_frame.identifiers.undeclared |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 797 | if extended_loop: |
| 798 | loop_frame.identifiers.add_special('loop') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 799 | |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 800 | aliases = self.collect_shadowed(loop_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 801 | self.pull_locals(loop_frame) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 802 | if node.else_: |
| 803 | self.writeline('l_loop = None') |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 804 | |
| 805 | self.newline(node) |
| 806 | self.writeline('for ') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 807 | self.visit(node.target, loop_frame) |
Armin Ronacher | 180a1bd | 2008-04-09 12:14:24 +0200 | [diff] [blame] | 808 | self.write(extended_loop and ', l_loop in LoopContext(' or ' in ') |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 809 | |
| 810 | # the expression pointing to the parent loop. We make the |
| 811 | # undefined a bit more debug friendly at the same time. |
| 812 | parent_loop = 'loop' in aliases and aliases['loop'] \ |
Armin Ronacher | 19cf9c2 | 2008-05-01 12:49:53 +0200 | [diff] [blame] | 813 | or "environment.undefined(%r, name='loop')" % "'loop' " \ |
| 814 | 'is undefined. "the filter section of a loop as well ' \ |
| 815 | 'as the else block doesn\'t have access to the ' \ |
| 816 | "special 'loop' variable of the current loop. " \ |
| 817 | "Because there is no parent loop it's undefined." |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 818 | |
| 819 | # if we have an extened loop and a node test, we filter in the |
| 820 | # "outer frame". |
| 821 | if extended_loop and node.test is not None: |
| 822 | self.write('(') |
| 823 | self.visit(node.target, loop_frame) |
| 824 | self.write(' for ') |
| 825 | self.visit(node.target, loop_frame) |
| 826 | self.write(' in ') |
| 827 | self.visit(node.iter, loop_frame) |
| 828 | self.write(' if (') |
| 829 | test_frame = loop_frame.copy() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 830 | self.writeline('l_loop = ' + parent_loop) |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 831 | self.visit(node.test, test_frame) |
| 832 | self.write('))') |
| 833 | |
| 834 | else: |
| 835 | self.visit(node.iter, loop_frame) |
| 836 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 837 | self.write(extended_loop and '):' or ':') |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 838 | |
| 839 | # tests in not extended loops become a continue |
| 840 | if not extended_loop and node.test is not None: |
| 841 | self.indent() |
Armin Ronacher | 47a506f | 2008-05-06 12:17:23 +0200 | [diff] [blame] | 842 | self.writeline('if not ') |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 843 | self.visit(node.test, loop_frame) |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 844 | self.write(':') |
| 845 | self.indent() |
| 846 | self.writeline('continue') |
| 847 | self.outdent(2) |
| 848 | |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 849 | self.indent() |
Armin Ronacher | be4ae24 | 2008-04-18 09:49:08 +0200 | [diff] [blame] | 850 | self.blockvisit(node.body, loop_frame, force_generator=True) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 851 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 852 | |
| 853 | if node.else_: |
| 854 | self.writeline('if l_loop is None:') |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 855 | self.indent() |
| 856 | self.writeline('l_loop = ' + parent_loop) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 857 | self.blockvisit(node.else_, loop_frame, force_generator=False) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 858 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 859 | |
Armin Ronacher | d4c64f7 | 2008-04-11 17:15:29 +0200 | [diff] [blame] | 860 | # reset the aliases if there are any. |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 861 | for name, alias in aliases.iteritems(): |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 862 | self.writeline('l_%s = %s' % (name, alias)) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 863 | |
| 864 | def visit_If(self, node, frame): |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 865 | if_frame = frame.soft() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 866 | self.writeline('if ', node) |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 867 | self.visit(node.test, if_frame) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 868 | self.write(':') |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 869 | self.indent() |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 870 | self.blockvisit(node.body, if_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 871 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 872 | if node.else_: |
| 873 | self.writeline('else:') |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 874 | self.indent() |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 875 | self.blockvisit(node.else_, if_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 876 | self.outdent() |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 877 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 878 | def visit_Macro(self, node, frame): |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 879 | macro_frame = self.function_scoping(node, frame) |
| 880 | args = macro_frame.arguments |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 881 | self.writeline('def macro(%s):' % ', '.join(args), node) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 882 | macro_frame.buffer = buf = self.temporary_identifier() |
| 883 | self.indent() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 884 | self.pull_locals(macro_frame) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 885 | self.writeline('%s = []' % buf) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 886 | self.blockvisit(node.body, macro_frame) |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 887 | if self.environment.autoescape: |
| 888 | self.writeline('return Markup(concat(%s))' % buf) |
| 889 | else: |
| 890 | self.writeline("return concat(%s)" % buf) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 891 | self.outdent() |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 892 | self.newline() |
| 893 | if frame.toplevel: |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 894 | if not node.name.startswith('__'): |
| 895 | self.write('context.exported_vars.add(%r)' % node.name) |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 896 | self.writeline('context.vars[%r] = ' % node.name) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 897 | arg_tuple = ', '.join(repr(x.name) for x in node.args) |
| 898 | if len(node.args) == 1: |
| 899 | arg_tuple += ',' |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 900 | self.write('l_%s = Macro(environment, macro, %r, (%s), (' % |
| 901 | (node.name, node.name, arg_tuple)) |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 902 | for arg in node.defaults: |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 903 | self.visit(arg, macro_frame) |
Armin Ronacher | 4f62a9f | 2008-04-08 18:09:13 +0200 | [diff] [blame] | 904 | self.write(', ') |
Armin Ronacher | 963f97d | 2008-04-25 11:44:59 +0200 | [diff] [blame] | 905 | self.write('), %s, %s, %s)' % ( |
| 906 | macro_frame.accesses_kwargs and '1' or '0', |
| 907 | macro_frame.accesses_varargs and '1' or '0', |
Armin Ronacher | 00d5d21 | 2008-04-13 01:10:18 +0200 | [diff] [blame] | 908 | macro_frame.accesses_caller and '1' or '0' |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 909 | )) |
| 910 | |
| 911 | def visit_CallBlock(self, node, frame): |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 912 | call_frame = self.function_scoping(node, frame, node.iter_child_nodes |
| 913 | (exclude=('call',))) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 914 | args = call_frame.arguments |
| 915 | self.writeline('def call(%s):' % ', '.join(args), node) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 916 | call_frame.buffer = buf = self.temporary_identifier() |
| 917 | self.indent() |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 918 | self.pull_locals(call_frame) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 919 | self.writeline('%s = []' % buf) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 920 | self.blockvisit(node.body, call_frame) |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 921 | if self.environment.autoescape: |
| 922 | self.writeline("return Markup(concat(%s))" % buf) |
| 923 | else: |
| 924 | self.writeline('return concat(%s)' % buf) |
Armin Ronacher | 625215e | 2008-04-13 16:31:08 +0200 | [diff] [blame] | 925 | self.outdent() |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 926 | arg_tuple = ', '.join(repr(x.name) for x in node.args) |
| 927 | if len(node.args) == 1: |
| 928 | arg_tuple += ',' |
Armin Ronacher | c63243e | 2008-04-14 22:53:58 +0200 | [diff] [blame] | 929 | self.writeline('caller = Macro(environment, call, None, (%s), (' % |
| 930 | arg_tuple) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 931 | for arg in node.defaults: |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 932 | self.visit(arg, call_frame) |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 933 | self.write(', ') |
Armin Ronacher | 963f97d | 2008-04-25 11:44:59 +0200 | [diff] [blame] | 934 | self.write('), %s, %s, 0)' % ( |
| 935 | call_frame.accesses_kwargs and '1' or '0', |
| 936 | call_frame.accesses_varargs and '1' or '0' |
| 937 | )) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 938 | if frame.buffer is None: |
| 939 | self.writeline('yield ', node) |
| 940 | else: |
| 941 | self.writeline('%s.append(' % frame.buffer, node) |
Armin Ronacher | 2feed1d | 2008-04-26 16:26:52 +0200 | [diff] [blame] | 942 | self.visit_Call(node.call, call_frame, |
| 943 | extra_kwargs={'caller': 'caller'}) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 944 | if frame.buffer is not None: |
| 945 | self.write(')') |
| 946 | |
| 947 | def visit_FilterBlock(self, node, frame): |
| 948 | filter_frame = frame.inner() |
| 949 | filter_frame.inspect(node.iter_child_nodes()) |
| 950 | |
| 951 | aliases = self.collect_shadowed(filter_frame) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 952 | self.pull_locals(filter_frame) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 953 | filter_frame.buffer = buf = self.temporary_identifier() |
| 954 | |
| 955 | self.writeline('%s = []' % buf, node) |
| 956 | for child in node.body: |
| 957 | self.visit(child, filter_frame) |
| 958 | |
| 959 | if frame.buffer is None: |
| 960 | self.writeline('yield ', node) |
| 961 | else: |
| 962 | self.writeline('%s.append(' % frame.buffer, node) |
Armin Ronacher | de6bf71 | 2008-04-26 01:44:14 +0200 | [diff] [blame] | 963 | self.visit_Filter(node.filter, filter_frame, 'concat(%s)' % buf) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 964 | if frame.buffer is not None: |
| 965 | self.write(')') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 966 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 967 | def visit_ExprStmt(self, node, frame): |
| 968 | self.newline(node) |
Armin Ronacher | 6ce170c | 2008-04-25 12:32:36 +0200 | [diff] [blame] | 969 | self.visit(node.node, frame) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 970 | |
| 971 | def visit_Output(self, node, frame): |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 972 | # if we have a known extends statement, we don't output anything |
Armin Ronacher | 7a52df8 | 2008-04-11 13:58:22 +0200 | [diff] [blame] | 973 | if self.has_known_extends and frame.toplevel: |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 974 | return |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 975 | |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 976 | self.newline(node) |
Armin Ronacher | 8edbe49 | 2008-04-10 20:43:43 +0200 | [diff] [blame] | 977 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 978 | # if we are in the toplevel scope and there was already an extends |
| 979 | # statement we have to add a check that disables our yield(s) here |
| 980 | # so that they don't appear in the output. |
| 981 | outdent_later = False |
| 982 | if frame.toplevel and self.extends_so_far != 0: |
Armin Ronacher | 203bfcb | 2008-04-24 21:54:44 +0200 | [diff] [blame] | 983 | self.writeline('if parent_template is None:') |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 984 | self.indent() |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 985 | outdent_later = True |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 986 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 987 | # try to evaluate as many chunks as possible into a static |
| 988 | # string at compile time. |
| 989 | body = [] |
| 990 | for child in node.nodes: |
| 991 | try: |
| 992 | const = unicode(child.as_const()) |
| 993 | except: |
| 994 | body.append(child) |
| 995 | continue |
| 996 | if body and isinstance(body[-1], list): |
| 997 | body[-1].append(const) |
| 998 | else: |
| 999 | body.append([const]) |
| 1000 | |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 1001 | # if we have less than 3 nodes or less than 6 and a buffer we |
| 1002 | # yield or extend |
| 1003 | if len(body) < 3 or (frame.buffer is not None and len(body) < 6): |
| 1004 | if frame.buffer is not None: |
| 1005 | self.writeline('%s.extend((' % frame.buffer) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1006 | for item in body: |
| 1007 | if isinstance(item, list): |
Armin Ronacher | de6bf71 | 2008-04-26 01:44:14 +0200 | [diff] [blame] | 1008 | val = repr(concat(item)) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1009 | if frame.buffer is None: |
| 1010 | self.writeline('yield ' + val) |
| 1011 | else: |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 1012 | self.write(val + ', ') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1013 | else: |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1014 | if frame.buffer is None: |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 1015 | self.writeline('yield ') |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1016 | close = 1 |
| 1017 | if self.environment.autoescape: |
| 1018 | self.write('escape(') |
| 1019 | else: |
| 1020 | self.write('unicode(') |
| 1021 | if self.environment.finalize is not None: |
| 1022 | self.write('environment.finalize(') |
| 1023 | close += 1 |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1024 | self.visit(item, frame) |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1025 | self.write(')' * close) |
Armin Ronacher | 32a910f | 2008-04-26 23:21:03 +0200 | [diff] [blame] | 1026 | if frame.buffer is not None: |
| 1027 | self.write(', ') |
| 1028 | if frame.buffer is not None: |
| 1029 | self.write('))') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1030 | |
| 1031 | # otherwise we create a format string as this is faster in that case |
| 1032 | else: |
| 1033 | format = [] |
| 1034 | arguments = [] |
| 1035 | for item in body: |
| 1036 | if isinstance(item, list): |
Armin Ronacher | de6bf71 | 2008-04-26 01:44:14 +0200 | [diff] [blame] | 1037 | format.append(concat(item).replace('%', '%%')) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1038 | else: |
| 1039 | format.append('%s') |
| 1040 | arguments.append(item) |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1041 | if frame.buffer is None: |
| 1042 | self.writeline('yield ') |
| 1043 | else: |
| 1044 | self.writeline('%s.append(' % frame.buffer) |
Armin Ronacher | de6bf71 | 2008-04-26 01:44:14 +0200 | [diff] [blame] | 1045 | self.write(repr(concat(format)) + ' % (') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1046 | idx = -1 |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 1047 | self.indent() |
| 1048 | for argument in arguments: |
| 1049 | self.newline(argument) |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1050 | close = 0 |
| 1051 | if self.environment.autoescape: |
| 1052 | self.write('escape(') |
| 1053 | close += 1 |
| 1054 | if self.environment.finalize is not None: |
| 1055 | self.write('environment.finalize(') |
| 1056 | close += 1 |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1057 | self.visit(argument, frame) |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1058 | self.write(')' * close + ',') |
Armin Ronacher | 8e8d071 | 2008-04-16 23:10:49 +0200 | [diff] [blame] | 1059 | self.outdent() |
| 1060 | self.writeline(')') |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1061 | if frame.buffer is not None: |
| 1062 | self.write(')') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1063 | |
Armin Ronacher | 7fb3897 | 2008-04-11 13:54:28 +0200 | [diff] [blame] | 1064 | if outdent_later: |
Armin Ronacher | 75cfb86 | 2008-04-11 13:47:22 +0200 | [diff] [blame] | 1065 | self.outdent() |
| 1066 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1067 | def visit_Assign(self, node, frame): |
| 1068 | self.newline(node) |
| 1069 | # toplevel assignments however go into the local namespace and |
| 1070 | # the current template's context. We create a copy of the frame |
| 1071 | # here and add a set so that the Name visitor can add the assigned |
| 1072 | # names here. |
| 1073 | if frame.toplevel: |
| 1074 | assignment_frame = frame.copy() |
| 1075 | assignment_frame.assigned_names = set() |
| 1076 | else: |
| 1077 | assignment_frame = frame |
| 1078 | self.visit(node.target, assignment_frame) |
| 1079 | self.write(' = ') |
| 1080 | self.visit(node.node, frame) |
Armin Ronacher | 9706fab | 2008-04-08 18:49:56 +0200 | [diff] [blame] | 1081 | |
| 1082 | # make sure toplevel assignments are added to the context. |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1083 | if frame.toplevel: |
| 1084 | for name in assignment_frame.assigned_names: |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 1085 | self.writeline('context.vars[%r] = l_%s' % (name, name)) |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 1086 | if not name.startswith('__'): |
| 1087 | self.writeline('context.exported_vars.add(%r)' % name) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1088 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1089 | def visit_Name(self, node, frame): |
Armin Ronacher | c9705c2 | 2008-04-27 21:28:03 +0200 | [diff] [blame] | 1090 | if node.ctx == 'store' and frame.toplevel: |
| 1091 | frame.assigned_names.add(node.name) |
Armin Ronacher | d1ff858 | 2008-05-11 00:30:43 +0200 | [diff] [blame^] | 1092 | self.write('l_' + node.name) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1093 | |
Armin Ronacher | d84ec46 | 2008-04-29 13:43:16 +0200 | [diff] [blame] | 1094 | def visit_MarkSafe(self, node, frame): |
| 1095 | self.write('Markup(') |
| 1096 | self.visit(node.expr, frame) |
| 1097 | self.write(')') |
| 1098 | |
Armin Ronacher | 023b5e9 | 2008-05-08 11:03:10 +0200 | [diff] [blame] | 1099 | def visit_EnvironmentAttribute(self, node, frame): |
| 1100 | self.write('environment.' + node.name) |
| 1101 | |
| 1102 | def visit_ExtensionAttribute(self, node, frame): |
| 1103 | self.write('environment.extensions[%r].%s' % (node.identifier, node.attr)) |
| 1104 | |
| 1105 | def visit_ImportedName(self, node, frame): |
| 1106 | self.write(self.import_aliases[node.importname]) |
| 1107 | |
| 1108 | def visit_InternalName(self, node, frame): |
| 1109 | self.write(node.name) |
| 1110 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1111 | def visit_Const(self, node, frame): |
| 1112 | val = node.value |
| 1113 | if isinstance(val, float): |
| 1114 | # XXX: add checks for infinity and nan |
| 1115 | self.write(str(val)) |
| 1116 | else: |
| 1117 | self.write(repr(val)) |
| 1118 | |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1119 | def visit_Tuple(self, node, frame): |
| 1120 | self.write('(') |
| 1121 | idx = -1 |
| 1122 | for idx, item in enumerate(node.items): |
| 1123 | if idx: |
| 1124 | self.write(', ') |
| 1125 | self.visit(item, frame) |
| 1126 | self.write(idx == 0 and ',)' or ')') |
| 1127 | |
Armin Ronacher | 8edbe49 | 2008-04-10 20:43:43 +0200 | [diff] [blame] | 1128 | def visit_List(self, node, frame): |
| 1129 | self.write('[') |
| 1130 | for idx, item in enumerate(node.items): |
| 1131 | if idx: |
| 1132 | self.write(', ') |
| 1133 | self.visit(item, frame) |
| 1134 | self.write(']') |
| 1135 | |
| 1136 | def visit_Dict(self, node, frame): |
| 1137 | self.write('{') |
| 1138 | for idx, item in enumerate(node.items): |
| 1139 | if idx: |
| 1140 | self.write(', ') |
| 1141 | self.visit(item.key, frame) |
| 1142 | self.write(': ') |
| 1143 | self.visit(item.value, frame) |
| 1144 | self.write('}') |
| 1145 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1146 | def binop(operator): |
| 1147 | def visitor(self, node, frame): |
| 1148 | self.write('(') |
| 1149 | self.visit(node.left, frame) |
| 1150 | self.write(' %s ' % operator) |
| 1151 | self.visit(node.right, frame) |
| 1152 | self.write(')') |
| 1153 | return visitor |
| 1154 | |
| 1155 | def uaop(operator): |
| 1156 | def visitor(self, node, frame): |
| 1157 | self.write('(' + operator) |
Armin Ronacher | 9a82205 | 2008-04-17 18:44:07 +0200 | [diff] [blame] | 1158 | self.visit(node.node, frame) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1159 | self.write(')') |
| 1160 | return visitor |
| 1161 | |
| 1162 | visit_Add = binop('+') |
| 1163 | visit_Sub = binop('-') |
| 1164 | visit_Mul = binop('*') |
| 1165 | visit_Div = binop('/') |
| 1166 | visit_FloorDiv = binop('//') |
| 1167 | visit_Pow = binop('**') |
| 1168 | visit_Mod = binop('%') |
| 1169 | visit_And = binop('and') |
| 1170 | visit_Or = binop('or') |
| 1171 | visit_Pos = uaop('+') |
| 1172 | visit_Neg = uaop('-') |
| 1173 | visit_Not = uaop('not ') |
| 1174 | del binop, uaop |
| 1175 | |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1176 | def visit_Concat(self, node, frame): |
Armin Ronacher | 709f6e5 | 2008-04-28 18:18:16 +0200 | [diff] [blame] | 1177 | self.write('%s((' % self.environment.autoescape and |
| 1178 | 'markup_join' or 'unicode_join') |
Armin Ronacher | d134231 | 2008-04-28 12:20:12 +0200 | [diff] [blame] | 1179 | for arg in node.nodes: |
| 1180 | self.visit(arg, frame) |
| 1181 | self.write(', ') |
| 1182 | self.write('))') |
| 1183 | |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1184 | def visit_Compare(self, node, frame): |
| 1185 | self.visit(node.expr, frame) |
| 1186 | for op in node.ops: |
| 1187 | self.visit(op, frame) |
| 1188 | |
| 1189 | def visit_Operand(self, node, frame): |
| 1190 | self.write(' %s ' % operators[node.op]) |
| 1191 | self.visit(node.expr, frame) |
| 1192 | |
| 1193 | def visit_Subscript(self, node, frame): |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1194 | if isinstance(node.arg, nodes.Slice): |
| 1195 | self.visit(node.node, frame) |
| 1196 | self.write('[') |
| 1197 | self.visit(node.arg, frame) |
| 1198 | self.write(']') |
| 1199 | return |
| 1200 | try: |
| 1201 | const = node.arg.as_const() |
| 1202 | have_const = True |
| 1203 | except nodes.Impossible: |
| 1204 | have_const = False |
Armin Ronacher | c63243e | 2008-04-14 22:53:58 +0200 | [diff] [blame] | 1205 | self.write('environment.subscribe(') |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1206 | self.visit(node.node, frame) |
| 1207 | self.write(', ') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1208 | if have_const: |
| 1209 | self.write(repr(const)) |
| 1210 | else: |
| 1211 | self.visit(node.arg, frame) |
Armin Ronacher | 4dfc975 | 2008-04-09 15:03:29 +0200 | [diff] [blame] | 1212 | self.write(')') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1213 | |
| 1214 | def visit_Slice(self, node, frame): |
| 1215 | if node.start is not None: |
| 1216 | self.visit(node.start, frame) |
| 1217 | self.write(':') |
| 1218 | if node.stop is not None: |
| 1219 | self.visit(node.stop, frame) |
| 1220 | if node.step is not None: |
| 1221 | self.write(':') |
| 1222 | self.visit(node.step, frame) |
| 1223 | |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1224 | def visit_Filter(self, node, frame, initial=None): |
Armin Ronacher | b9e7875 | 2008-05-10 23:36:28 +0200 | [diff] [blame] | 1225 | self.write(self.filters[node.name] + '(') |
Christoph Hack | 8090986 | 2008-04-14 01:35:10 +0200 | [diff] [blame] | 1226 | func = self.environment.filters.get(node.name) |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 1227 | if func is None: |
| 1228 | raise TemplateAssertionError('no filter named %r' % node.name, |
| 1229 | node.lineno, self.filename) |
Christoph Hack | 8090986 | 2008-04-14 01:35:10 +0200 | [diff] [blame] | 1230 | if getattr(func, 'contextfilter', False): |
| 1231 | self.write('context, ') |
Armin Ronacher | 9a027f4 | 2008-04-17 11:13:40 +0200 | [diff] [blame] | 1232 | elif getattr(func, 'environmentfilter', False): |
| 1233 | self.write('environment, ') |
Christoph Hack | 8090986 | 2008-04-14 01:35:10 +0200 | [diff] [blame] | 1234 | if isinstance(node.node, nodes.Filter): |
| 1235 | self.visit_Filter(node.node, frame, initial) |
| 1236 | elif node.node is None: |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1237 | self.write(initial) |
| 1238 | else: |
Armin Ronacher | fa865fb | 2008-04-12 22:11:53 +0200 | [diff] [blame] | 1239 | self.visit(node.node, frame) |
Armin Ronacher | d55ab53 | 2008-04-09 16:13:39 +0200 | [diff] [blame] | 1240 | self.signature(node, frame) |
| 1241 | self.write(')') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1242 | |
| 1243 | def visit_Test(self, node, frame): |
Armin Ronacher | b9e7875 | 2008-05-10 23:36:28 +0200 | [diff] [blame] | 1244 | self.write(self.tests[node.name] + '(') |
Armin Ronacher | 0611e49 | 2008-04-25 23:44:14 +0200 | [diff] [blame] | 1245 | if node.name not in self.environment.tests: |
| 1246 | raise TemplateAssertionError('no test named %r' % node.name, |
| 1247 | node.lineno, self.filename) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1248 | self.visit(node.node, frame) |
| 1249 | self.signature(node, frame) |
Armin Ronacher | e791c2a | 2008-04-07 18:39:54 +0200 | [diff] [blame] | 1250 | self.write(')') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1251 | |
Armin Ronacher | 3d8b784 | 2008-04-13 13:16:50 +0200 | [diff] [blame] | 1252 | def visit_CondExpr(self, node, frame): |
| 1253 | if not have_condexpr: |
| 1254 | self.write('((') |
| 1255 | self.visit(node.test, frame) |
| 1256 | self.write(') and (') |
| 1257 | self.visit(node.expr1, frame) |
| 1258 | self.write(',) or (') |
| 1259 | self.visit(node.expr2, frame) |
| 1260 | self.write(',))[0]') |
| 1261 | else: |
| 1262 | self.write('(') |
| 1263 | self.visit(node.expr1, frame) |
| 1264 | self.write(' if ') |
| 1265 | self.visit(node.test, frame) |
| 1266 | self.write(' else ') |
| 1267 | self.visit(node.expr2, frame) |
| 1268 | self.write(')') |
| 1269 | |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 1270 | def visit_Call(self, node, frame, extra_kwargs=None): |
Armin Ronacher | c63243e | 2008-04-14 22:53:58 +0200 | [diff] [blame] | 1271 | if self.environment.sandboxed: |
| 1272 | self.write('environment.call(') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1273 | self.visit(node.node, frame) |
Armin Ronacher | c63243e | 2008-04-14 22:53:58 +0200 | [diff] [blame] | 1274 | self.write(self.environment.sandboxed and ', ' or '(') |
Armin Ronacher | 7108207 | 2008-04-12 14:19:36 +0200 | [diff] [blame] | 1275 | self.signature(node, frame, False, extra_kwargs) |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1276 | self.write(')') |
| 1277 | |
| 1278 | def visit_Keyword(self, node, frame): |
Armin Ronacher | 2e9396b | 2008-04-16 14:21:57 +0200 | [diff] [blame] | 1279 | self.write(node.key + '=') |
Armin Ronacher | 8efc522 | 2008-04-08 14:47:40 +0200 | [diff] [blame] | 1280 | self.visit(node.value, frame) |