Parse the variable. This finds the: - operator, - set of safe characters, - variables, and - defaults.
(self)
| 227 | return self.original |
| 228 | |
| 229 | def parse(self) -> None: |
| 230 | """Parse the variable. |
| 231 | |
| 232 | This finds the: |
| 233 | - operator, |
| 234 | - set of safe characters, |
| 235 | - variables, and |
| 236 | - defaults. |
| 237 | |
| 238 | """ |
| 239 | var_list_str = self.original |
| 240 | if (operator_str := self.original[0]) in _operators: |
| 241 | self.operator = Operator.from_string(operator_str) |
| 242 | var_list_str = self.original[1:] |
| 243 | |
| 244 | var_list = var_list_str.split(",") |
| 245 | |
| 246 | for var in var_list: |
| 247 | default_val = None |
| 248 | name = var |
| 249 | # NOTE(sigmavirus24): This is from an earlier draft but is not in |
| 250 | # the specification |
| 251 | if "=" in var: |
| 252 | name, default_val = tuple(var.split("=", 1)) |
| 253 | |
| 254 | explode = name.endswith("*") |
| 255 | name = name.rstrip("*") |
| 256 | |
| 257 | prefix: t.Optional[int] = None |
| 258 | if ":" in name: |
| 259 | name, prefix_str = tuple(name.split(":", 1)) |
| 260 | prefix = int(prefix_str, 10) |
| 261 | |
| 262 | if default_val: |
| 263 | self.defaults[name] = default_val |
| 264 | |
| 265 | self.variables.append( |
| 266 | (name, {"explode": explode, "prefix": prefix}) |
| 267 | ) |
| 268 | |
| 269 | self.variable_names = [varname for (varname, _) in self.variables] |
| 270 | |
| 271 | def _query_expansion( |
| 272 | self, |