Class: Reginald::Parser
- Inherits:
-
Racc::Parser
- Object
- Racc::Parser
- Reginald::Parser
- Defined in:
- lib/rack/mount/vendor/reginald/reginald/parser.rb,
lib/rack/mount/vendor/reginald/reginald/tokenizer.rb
Overview
:nodoc: all
Defined Under Namespace
Classes: ScanError
Constant Summary collapse
- Racc_arg =
[ racc_action_table, racc_action_check, racc_action_default, racc_action_pointer, racc_goto_table, racc_goto_check, racc_goto_default, racc_goto_pointer, racc_nt_base, racc_reduce_table, racc_token_table, racc_shift_n, racc_reduce_n, racc_use_result_var ]
- Racc_token_to_s_table =
[ "$end", "error", "BAR", "LBRACK", "CTYPE", "RBRACK", "NEGATE", "CCLASS", "DOT", "CHAR", "LPAREN", "RPAREN", "QMARK", "COLON", "NAME", "L_ANCHOR", "R_ANCHOR", "STAR", "PLUS", "LCURLY", "RCURLY", "MINUS", "MULTILINE", "IGNORECASE", "EXTENDED", "$start", "expression", "branch", "atom", "quantifier", "group", "bracket_expression", "anchor", "options", "modifier" ]
- Racc_debug_parser =
false
Instance Attribute Summary collapse
-
#filename ⇒ Object
readonly
Returns the value of attribute filename.
-
#lineno ⇒ Object
readonly
Returns the value of attribute lineno.
-
#options_stack ⇒ Object
Returns the value of attribute options_stack.
-
#state ⇒ Object
Returns the value of attribute state.
Class Method Summary collapse
Instance Method Summary collapse
-
#_reduce_1(val, _values, result) ⇒ Object
reduce 0 omitted.
- #_reduce_10(val, _values, result) ⇒ Object
- #_reduce_11(val, _values, result) ⇒ Object
- #_reduce_12(val, _values, result) ⇒ Object
- #_reduce_13(val, _values, result) ⇒ Object
- #_reduce_14(val, _values, result) ⇒ Object
- #_reduce_15(val, _values, result) ⇒ Object
- #_reduce_16(val, _values, result) ⇒ Object
- #_reduce_17(val, _values, result) ⇒ Object
- #_reduce_18(val, _values, result) ⇒ Object
- #_reduce_2(val, _values, result) ⇒ Object
-
#_reduce_24(val, _values, result) ⇒ Object
reduce 23 omitted.
- #_reduce_25(val, _values, result) ⇒ Object
- #_reduce_26(val, _values, result) ⇒ Object
- #_reduce_27(val, _values, result) ⇒ Object
- #_reduce_3(val, _values, result) ⇒ Object
-
#_reduce_30(val, _values, result) ⇒ Object
reduce 29 omitted.
- #_reduce_31(val, _values, result) ⇒ Object
- #_reduce_32(val, _values, result) ⇒ Object
- #_reduce_33(val, _values, result) ⇒ Object
- #_reduce_34(val, _values, result) ⇒ Object
- #_reduce_35(val, _values, result) ⇒ Object
- #_reduce_36(val, _values, result) ⇒ Object
- #_reduce_4(val, _values, result) ⇒ Object
- #_reduce_5(val, _values, result) ⇒ Object
-
#_reduce_8(val, _values, result) ⇒ Object
reduce 7 omitted.
- #_reduce_9(val, _values, result) ⇒ Object
- #_reduce_none(val, _values, result) ⇒ Object
- #action(&block) ⇒ Object
-
#initialize ⇒ Parser
constructor
A new instance of Parser.
- #load_file(filename) ⇒ Object
- #next_token ⇒ Object
- #scan_file(filename) ⇒ Object
- #scan_setup(str) ⇒ Object
- #scan_str(str) ⇒ Object
Constructor Details
#initialize ⇒ Parser
Returns a new instance of Parser.
24 25 26 27 28 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 24 def initialize @capture_index = 0 @capture_index_stack = [] @options_stack = [] end |
Instance Attribute Details
#filename ⇒ Object (readonly)
Returns the value of attribute filename.
15 16 17 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 15 def filename @filename end |
#lineno ⇒ Object (readonly)
Returns the value of attribute lineno.
14 15 16 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 14 def lineno @lineno end |
#options_stack ⇒ Object
Returns the value of attribute options_stack.
22 23 24 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 22 def @options_stack end |
#state ⇒ Object
Returns the value of attribute state.
16 17 18 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 16 def state @state end |
Class Method Details
.parse_regexp(regexp) ⇒ Object
11 12 13 14 15 16 17 18 19 20 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 11 def self.parse_regexp(regexp) = Options.from_int(regexp.) parser = new parser. << .to_h expression = parser.scan_str(regexp.source) expression = expression.dup(.to_h) if .any? expression end |
Instance Method Details
#_reduce_1(val, _values, result) ⇒ Object
reduce 0 omitted
235 236 237 238 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 235 def _reduce_1(val, _values, result) result = Expression.new(Alternation.reduce(val[0], val[2])) result end |
#_reduce_10(val, _values, result) ⇒ Object
274 275 276 277 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 274 def _reduce_10(val, _values, result) result = CharacterClass.new(val[2], :negate => true) result end |
#_reduce_11(val, _values, result) ⇒ Object
279 280 281 282 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 279 def _reduce_11(val, _values, result) result = CharacterClass.new(val[0]) result end |
#_reduce_12(val, _values, result) ⇒ Object
284 285 286 287 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 284 def _reduce_12(val, _values, result) result = CharacterClass.new('.') result end |
#_reduce_13(val, _values, result) ⇒ Object
289 290 291 292 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 289 def _reduce_13(val, _values, result) result = Anchor.new(val[0]) result end |
#_reduce_14(val, _values, result) ⇒ Object
294 295 296 297 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 294 def _reduce_14(val, _values, result) result = Character.new(val[0]) result end |
#_reduce_15(val, _values, result) ⇒ Object
299 300 301 302 303 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 299 def _reduce_15(val, _values, result) result = Group.new(val[1], :index => @capture_index_stack.pop) result end |
#_reduce_16(val, _values, result) ⇒ Object
305 306 307 308 309 310 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 305 def _reduce_16(val, _values, result) result = Group.new(val[4], val[2].merge(:capture => false)) @options_stack.pop result end |
#_reduce_17(val, _values, result) ⇒ Object
312 313 314 315 316 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 312 def _reduce_17(val, _values, result) result = Group.new(val[3], :capture => false); result end |
#_reduce_18(val, _values, result) ⇒ Object
318 319 320 321 322 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 318 def _reduce_18(val, _values, result) result = Group.new(val[3], :name => val[2], :index => @capture_index_stack.pop); result end |
#_reduce_2(val, _values, result) ⇒ Object
240 241 242 243 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 240 def _reduce_2(val, _values, result) result = Expression.reduce(val[0]) result end |
#_reduce_24(val, _values, result) ⇒ Object
reduce 23 omitted
334 335 336 337 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 334 def _reduce_24(val, _values, result) result = val.join result end |
#_reduce_25(val, _values, result) ⇒ Object
339 340 341 342 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 339 def _reduce_25(val, _values, result) result = val.join result end |
#_reduce_26(val, _values, result) ⇒ Object
344 345 346 347 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 344 def _reduce_26(val, _values, result) result = val.join result end |
#_reduce_27(val, _values, result) ⇒ Object
349 350 351 352 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 349 def _reduce_27(val, _values, result) result = val.join result end |
#_reduce_3(val, _values, result) ⇒ Object
245 246 247 248 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 245 def _reduce_3(val, _values, result) result = Expression.reduce(val[0], val[1].dup(:quantifier => val[2])) result end |
#_reduce_30(val, _values, result) ⇒ Object
reduce 29 omitted
358 359 360 361 362 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 358 def _reduce_30(val, _values, result) @options_stack << result = { val[1] => false, val[2] => false, val[3] => false } result end |
#_reduce_31(val, _values, result) ⇒ Object
364 365 366 367 368 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 364 def _reduce_31(val, _values, result) @options_stack << result = { val[0] => true, val[2] => false, val[3] => false } result end |
#_reduce_32(val, _values, result) ⇒ Object
370 371 372 373 374 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 370 def _reduce_32(val, _values, result) @options_stack << result = { val[0] => true, val[1] => true, val[3] => false } result end |
#_reduce_33(val, _values, result) ⇒ Object
376 377 378 379 380 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 376 def _reduce_33(val, _values, result) @options_stack << result = { val[0] => true, val[1] => true, val[2] => true } result end |
#_reduce_34(val, _values, result) ⇒ Object
382 383 384 385 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 382 def _reduce_34(val, _values, result) result = :multiline result end |
#_reduce_35(val, _values, result) ⇒ Object
387 388 389 390 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 387 def _reduce_35(val, _values, result) result = :ignorecase result end |
#_reduce_36(val, _values, result) ⇒ Object
392 393 394 395 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 392 def _reduce_36(val, _values, result) result = :extended result end |
#_reduce_4(val, _values, result) ⇒ Object
250 251 252 253 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 250 def _reduce_4(val, _values, result) result = Expression.reduce(val[0], val[1]) result end |
#_reduce_5(val, _values, result) ⇒ Object
255 256 257 258 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 255 def _reduce_5(val, _values, result) result = val[0].dup(:quantifier => val[1]) result end |
#_reduce_8(val, _values, result) ⇒ Object
reduce 7 omitted
264 265 266 267 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 264 def _reduce_8(val, _values, result) result = CharacterClass.new(val[1]) result end |
#_reduce_9(val, _values, result) ⇒ Object
269 270 271 272 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 269 def _reduce_9(val, _values, result) result = CharacterClass.new(val[1]) result end |
#_reduce_none(val, _values, result) ⇒ Object
397 398 399 |
# File 'lib/rack/mount/vendor/reginald/reginald/parser.rb', line 397 def _reduce_none(val, _values, result) val[0] end |
#action(&block) ⇒ Object
24 25 26 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 24 def action(&block) yield end |
#load_file(filename) ⇒ Object
33 34 35 36 37 38 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 33 def load_file( filename ) @filename = filename open(filename, "r") do |f| scan_setup(f.read) end end |
#next_token ⇒ Object
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 46 def next_token return if @ss.eos? text = @ss.peek(1) @lineno += 1 if text == "\n" token = case @state when nil case when (text = @ss.scan(/\\[dDsSwW]/)) action { [:CCLASS, text] } when (text = @ss.scan(/\^|\\A/)) action { [:L_ANCHOR, text] } when (text = @ss.scan(/\$|\\Z/)) action { [:R_ANCHOR, text] } when (text = @ss.scan(/<(\w+)>/)) action { [:NAME, @ss[1]] } when (text = @ss.scan(/\(/)) action { @capture_index_stack << @capture_index @capture_index += 1 @state = :OPTIONS if @ss.peek(1) == '?'; [:LPAREN, text] } when (text = @ss.scan(/\)/)) action { [:RPAREN, text] } when (text = @ss.scan(/\[/)) action { @state = :CCLASS; [:LBRACK, text] } when (text = @ss.scan(/\{/)) action { [:LCURLY, text] } when (text = @ss.scan(/\}/)) action { [:RCURLY, text] } when (text = @ss.scan(/\|/)) action { [:BAR, text] } when (text = @ss.scan(/\./)) action { [:DOT, text] } when (text = @ss.scan(/\?/)) action { [:QMARK, text] } when (text = @ss.scan(/\+/)) action { [:PLUS, text] } when (text = @ss.scan(/\*/)) action { [:STAR, text] } when (text = @ss.scan(/\#/)) action { if @options_stack[-1][:extended] @state = :COMMENT; next_token else [:CHAR, text] end } when (text = @ss.scan(/\s|\n/)) action { if @options_stack[-1][:extended] next_token else [:CHAR, text] end } when (text = @ss.scan(/\\(.)/)) action { [:CHAR, @ss[1]] } when (text = @ss.scan(/./)) action { [:CHAR, text] } else text = @ss.string[@ss.pos .. -1] raise ScanError, "can not match: '" + text + "'" end # if when :CCLASS case when (text = @ss.scan(/\]/)) action { @state = nil; [:RBRACK, text] } when (text = @ss.scan(/\^/)) action { [:NEGATE, text] } when (text = @ss.scan(/:(alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print|punct|space|upper|word|xdigit):/)) action { [:CTYPE, text] } when (text = @ss.scan(/\\-/)) action { [:CHAR, text] } when (text = @ss.scan(/\\(.)/)) action { [:CHAR, @ss[1]] } when (text = @ss.scan(/./)) action { [:CHAR, text] } else text = @ss.string[@ss.pos .. -1] raise ScanError, "can not match: '" + text + "'" end # if when :OPTIONS case when (text = @ss.scan(/\?/)) action { @state = nil unless @ss.peek(1) =~ /-|m|i|x|:/ [:QMARK, text] } when (text = @ss.scan(/\-/)) action { [:MINUS, text] } when (text = @ss.scan(/m/)) action { [:MULTILINE, text] } when (text = @ss.scan(/i/)) action { [:IGNORECASE, text] } when (text = @ss.scan(/x/)) action { [:EXTENDED, text] } when (text = @ss.scan(/\:/)) action { @capture_index_stack.pop @capture_index -= 1 @state = nil; [:COLON, text] } else text = @ss.string[@ss.pos .. -1] raise ScanError, "can not match: '" + text + "'" end # if when :COMMENT case when (text = @ss.scan(/\n/)) action { @state = nil; next_token } when (text = @ss.scan(/./)) action { next_token } else text = @ss.string[@ss.pos .. -1] raise ScanError, "can not match: '" + text + "'" end # if else raise ScanError, "undefined state: '" + state.to_s + "'" end # case state token end |
#scan_file(filename) ⇒ Object
40 41 42 43 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 40 def scan_file( filename ) load_file(filename) do_parse end |
#scan_setup(str) ⇒ Object
18 19 20 21 22 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 18 def scan_setup(str) @ss = StringScanner.new(str) @lineno = 1 @state = nil end |
#scan_str(str) ⇒ Object
28 29 30 31 |
# File 'lib/rack/mount/vendor/reginald/reginald/tokenizer.rb', line 28 def scan_str(str) scan_setup(str) do_parse end |