Class: Regin::Parser
- Inherits:
-
Racc::Parser
- Object
- Racc::Parser
- Regin::Parser
- Defined in:
- lib/rack/mount/vendor/regin/regin/parser.rb,
lib/rack/mount/vendor/regin/regin/tokenizer.rb
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", "alternation", "subexpression", "expression_ary", "quantified_atom", "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_11(val, _values, result) ⇒ Object
reduce 10 omitted.
- #_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_19(val, _values, result) ⇒ Object
- #_reduce_20(val, _values, result) ⇒ Object
- #_reduce_21(val, _values, result) ⇒ Object
-
#_reduce_27(val, _values, result) ⇒ Object
reduce 26 omitted.
- #_reduce_28(val, _values, result) ⇒ Object
- #_reduce_29(val, _values, result) ⇒ Object
-
#_reduce_3(val, _values, result) ⇒ Object
reduce 2 omitted.
- #_reduce_30(val, _values, result) ⇒ Object
- #_reduce_31(val, _values, result) ⇒ Object
-
#_reduce_33(val, _values, result) ⇒ Object
reduce 32 omitted.
- #_reduce_34(val, _values, result) ⇒ Object
- #_reduce_35(val, _values, result) ⇒ Object
- #_reduce_36(val, _values, result) ⇒ Object
- #_reduce_37(val, _values, result) ⇒ Object
- #_reduce_38(val, _values, result) ⇒ Object
- #_reduce_39(val, _values, result) ⇒ Object
- #_reduce_4(val, _values, result) ⇒ Object
- #_reduce_5(val, _values, result) ⇒ Object
- #_reduce_6(val, _values, result) ⇒ Object
- #_reduce_7(val, _values, result) ⇒ Object
- #_reduce_8(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.
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# File 'lib/rack/mount/vendor/regin/regin/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.
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 15 def filename @filename end |
#lineno ⇒ Object (readonly)
Returns the value of attribute lineno.
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 14 def lineno @lineno end |
#options_stack ⇒ Object
Returns the value of attribute options_stack.
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 22 def @options_stack end |
#state ⇒ Object
Returns the value of attribute state.
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 16 def state @state end |
Class Method Details
.parse_regexp(regexp) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/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
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 245 def _reduce_1(val, _values, result) result = Expression.new(val[0]) result end |
#_reduce_11(val, _values, result) ⇒ Object
reduce 10 omitted
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 286 def _reduce_11(val, _values, result) result = CharacterClass.new(val[1]) result end |
#_reduce_12(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 291 def _reduce_12(val, _values, result) result = CharacterClass.new(val[1]) result end |
#_reduce_13(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 296 def _reduce_13(val, _values, result) result = CharacterClass.new(val[2], :negate => true) result end |
#_reduce_14(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 301 def _reduce_14(val, _values, result) result = CharacterClass.new(val[0]) result end |
#_reduce_15(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 306 def _reduce_15(val, _values, result) result = CharacterClass.new('.') result end |
#_reduce_16(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 311 def _reduce_16(val, _values, result) result = Anchor.new(val[0]) result end |
#_reduce_17(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 316 def _reduce_17(val, _values, result) result = Character.new(val[0]) result end |
#_reduce_18(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 321 def _reduce_18(val, _values, result) result = Group.new(val[1], :index => @capture_index_stack.pop) result end |
#_reduce_19(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 327 def _reduce_19(val, _values, result) result = Group.new(val[4], val[2].merge(:capture => false)) @options_stack.pop result end |
#_reduce_20(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 334 def _reduce_20(val, _values, result) result = Group.new(val[3], :capture => false); result end |
#_reduce_21(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 340 def _reduce_21(val, _values, result) result = Group.new(val[3], :name => val[2], :index => @capture_index_stack.pop); result end |
#_reduce_27(val, _values, result) ⇒ Object
reduce 26 omitted
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 356 def _reduce_27(val, _values, result) result = val.join result end |
#_reduce_28(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 361 def _reduce_28(val, _values, result) result = val.join result end |
#_reduce_29(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 366 def _reduce_29(val, _values, result) result = val.join result end |
#_reduce_3(val, _values, result) ⇒ Object
reduce 2 omitted
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 252 def _reduce_3(val, _values, result) result = val[0] + [val[2]] result end |
#_reduce_30(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 371 def _reduce_30(val, _values, result) result = val.join result end |
#_reduce_31(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 376 def _reduce_31(val, _values, result) result = val.join result end |
#_reduce_33(val, _values, result) ⇒ Object
reduce 32 omitted
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 383 def _reduce_33(val, _values, result) @options_stack << result = { val[1] => false, val[2] => false, val[3] => false } result end |
#_reduce_34(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 389 def _reduce_34(val, _values, result) @options_stack << result = { val[0] => true, val[2] => false, val[3] => false } result end |
#_reduce_35(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 395 def _reduce_35(val, _values, result) @options_stack << result = { val[0] => true, val[1] => true, val[3] => false } result end |
#_reduce_36(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 401 def _reduce_36(val, _values, result) @options_stack << result = { val[0] => true, val[1] => true, val[2] => true } result end |
#_reduce_37(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 407 def _reduce_37(val, _values, result) result = :multiline result end |
#_reduce_38(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 412 def _reduce_38(val, _values, result) result = :ignorecase result end |
#_reduce_39(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 417 def _reduce_39(val, _values, result) result = :extended result end |
#_reduce_4(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 257 def _reduce_4(val, _values, result) result = Alternation.new(val[0], val[2]) result end |
#_reduce_5(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 262 def _reduce_5(val, _values, result) result = Expression.new(val[0]) result end |
#_reduce_6(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 267 def _reduce_6(val, _values, result) result = val[0] + [val[1]] result end |
#_reduce_7(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 272 def _reduce_7(val, _values, result) result = [val[0]] result end |
#_reduce_8(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 277 def _reduce_8(val, _values, result) result = val[0].dup(:quantifier => val[1]) result end |
#_reduce_none(val, _values, result) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/parser.rb', line 422 def _reduce_none(val, _values, result) val[0] end |
#action(&block) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 24 def action(&block) yield end |
#load_file(filename) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 33 def load_file( filename ) @filename = filename open(filename, "r") do |f| scan_setup(f.read) end end |
#next_token ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/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 { [@ss.string[@ss.pos-2, 1] == '[' ? :NEGATE : :CHAR, 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
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 40 def scan_file( filename ) load_file(filename) do_parse end |
#scan_setup(str) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 18 def scan_setup(str) @ss = StringScanner.new(str) @lineno = 1 @state = nil end |
#scan_str(str) ⇒ Object
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# File 'lib/rack/mount/vendor/regin/regin/tokenizer.rb', line 28 def scan_str(str) scan_setup(str) do_parse end |