| 217 | } |
| 218 | |
| 219 | func (p *parser) parseExpr() expr { |
| 220 | s := p.scanner |
| 221 | |
| 222 | var result expr |
| 223 | |
| 224 | switch s.typ { |
| 225 | case tokenEOF: |
| 226 | return nil |
| 227 | case tokenIdent: |
| 228 | switch s.tok { |
| 229 | case "set": |
| 230 | var val string |
| 231 | |
| 232 | s.scan() |
| 233 | if s.typ != tokenIdent { |
| 234 | p.err = fmt.Errorf("expected identifier: %s", s.tok) |
| 235 | } |
| 236 | opt := s.tok |
| 237 | |
| 238 | s.scan() |
| 239 | if s.typ != tokenSemicolon { |
| 240 | val = s.tok |
| 241 | s.scan() |
| 242 | } |
| 243 | |
| 244 | s.scan() |
| 245 | |
| 246 | result = &setExpr{opt, val} |
| 247 | case "setlocal": |
| 248 | var val string |
| 249 | |
| 250 | s.scan() |
| 251 | if s.typ != tokenIdent { |
| 252 | p.err = fmt.Errorf("expected directory: %s", s.tok) |
| 253 | } |
| 254 | dir := s.tok |
| 255 | |
| 256 | s.scan() |
| 257 | if s.typ != tokenIdent { |
| 258 | p.err = fmt.Errorf("expected identifier: %s", s.tok) |
| 259 | } |
| 260 | opt := s.tok |
| 261 | |
| 262 | s.scan() |
| 263 | if s.typ != tokenSemicolon { |
| 264 | val = s.tok |
| 265 | s.scan() |
| 266 | } |
| 267 | |
| 268 | s.scan() |
| 269 | |
| 270 | result = &setLocalExpr{dir, opt, val} |
| 271 | case "map": |
| 272 | var expr expr |
| 273 | |
| 274 | s.scan() |
| 275 | keys := s.tok |
| 276 | |