我正在尝试在antlr中实现python格式：
grammar formatter;
source_stream
: segments EOF
;
segments
: segment*
;
segment
: (text | replacement_field)
;
text
: TEXT
;
replacement_field
: '{' field_name? ('!' conversion)? (':' format_spec)? '}'
;
field_name
: arg_name (('.'attribute_name) | '[' element_index ']')*
;
arg_name
: (identifier | integer)?
;
attribute_name
: identifier
;
element_index
: integer | index_string
;
index_string
: string
;
identifier
: NAME
;
conversion
: 's'
;
format_spec
: (fill? align)? sign? hash? zero? width? dash? precision? type?
;
fill
: FILL_ANY_CHAR
;
align
: '<' | '>' | '=' | '^'
;
sign
: '+' | '-' | ' '
;
hash
: '#'
;
zero
: '0'
;
width
: integer
;
precision
: integer
;
type
: 'b' | 'c' | 'd' | 'e' | 'E' | 'f' | 'g' | 'G' | 'n' | 'o' | 's' | 'x' | 'X' | '%'
;
dash
: ','
;
string
: STRING
;
STRING
: STRING_NO_BRACKET+
;
STRING_NO_BRACKET
: [\u0000-\u005C]
| [\u005E-\u007F]
;
TEXT
: ANY
;
ANY
: .
;
integer
: DECIMAL_INTEGER
| OCT_INTEGER
| HEX_INTEGER
| BIN_INTEGER
;
DECIMAL_INTEGER
: NON_ZERO_DIGIT DIGIT*
| '0'+
;
OCT_INTEGER
: '0' [oO] OCT_DIGIT+
;
HEX_INTEGER
: '0' [xX] HEX_DIGIT+
;
BIN_INTEGER
: '0' [bB]? BIN_DIGIT+
;
FILL_ANY_CHAR
: FILL
;
fragment FILL
: [\u0000-\u007F]
;
NAME
: ID_START ID_CONTINUE*
;
fragment NON_ZERO_DIGIT
: [1-9]
;
fragment DIGIT
: [0-9]
;
fragment OCT_DIGIT
: [0-7]
;
fragment HEX_DIGIT
: [0-9a-fA-F]
;
fragment BIN_DIGIT
: [01]
;
fragment ID_START
: '_'
| [A-Z]
| [a-z]
| '\u00AA'
| '\u00B5'
| '\u00BA'
| [\u00C0-\u00D6]
| [\u00D8-\u00F6]
| [\u00F8-\u01BA]
| '\u01BB'
| [\u01BC-\u01BF]
| [\u01C0-\u01C3]
| [\u01C4-\u0241]
| [\u0250-\u02AF]
| [\u02B0-\u02C1]
| [\u02C6-\u02D1]
| [\u02E0-\u02E4]
| '\u02EE'
| '\u037A'
| '\u0386'
| [\u0388-\u038A]
| '\u038C'
| [\u038E-\u03A1]
| [\u03A3-\u03CE]
| [\u03D0-\u03F5]
| [\u03F7-\u0481]
| [\u048A-\u04CE]
| [\u04D0-\u04F9]
| [\u0500-\u050F]
| [\u0531-\u0556]
| '\u0559'
| [\u0561-\u0587]
| [\u05D0-\u05EA]
| [\u05F0-\u05F2]
| [\u0621-\u063A]
| '\u0640'
| [\u0641-\u064A]
| [\u066E-\u066F]
| [\u0671-\u06D3]
| '\u06D5'
| [\u06E5-\u06E6]
| [\u06EE-\u06EF]
| [\u06FA-\u06FC]
| '\u06FF'
| '\u0710'
| [\u0712-\u072F]
| [\u074D-\u076D]
| [\u0780-\u07A5]
| '\u07B1'
| [\u0904-\u0939]
| '\u093D'
| '\u0950'
| [\u0958-\u0961]
| '\u097D'
| [\u0985-\u098C]
| [\u098F-\u0990]
| [\u0993-\u09A8]
| [\u09AA-\u09B0]
| '\u09B2'
| [\u09B6-\u09B9]
| '\u09BD'
| '\u09CE'
| [\u09DC-\u09DD]
| [\u09DF-\u09E1]
| [\u09F0-\u09F1]
| [\u0A05-\u0A0A]
| [\u0A0F-\u0A10]
| [\u0A13-\u0A28]
| [\u0A2A-\u0A30]
| [\u0A32-\u0A33]
| [\u0A35-\u0A36]
| [\u0A38-\u0A39]
| [\u0A59-\u0A5C]
| '\u0A5E'
| [\u0A72-\u0A74]
| [\u0A85-\u0A8D]
| [\u0A8F-\u0A91]
| [\u0A93-\u0AA8]
| [\u0AAA-\u0AB0]
| [\u0AB2-\u0AB3]
| [\u0AB5-\u0AB9]
| '\u0ABD'
| '\u0AD0'
| [\u0AE0-\u0AE1]
| [\u0B05-\u0B0C]
| [\u0B0F-\u0B10]
| [\u0B13-\u0B28]
| [\u0B2A-\u0B30]
| [\u0B32-\u0B33]
| [\u0B35-\u0B39]
| '\u0B3D'
| [\u0B5C-\u0B5D]
| [\u0B5F-\u0B61]
| '\u0B71'
| '\u0B83'
| [\u0B85-\u0B8A]
| [\u0B8E-\u0B90]
| [\u0B92-\u0B95]
| [\u0B99-\u0B9A]
| '\u0B9C'
| [\u0B9E-\u0B9F]
| [\u0BA3-\u0BA4]
| [\u0BA8-\u0BAA]
| [\u0BAE-\u0BB9]
| [\u0C05-\u0C0C]
| [\u0C0E-\u0C10]
| [\u0C12-\u0C28]
| [\u0C2A-\u0C33]
| [\u0C35-\u0C39]
| [\u0C60-\u0C61]
| [\u0C85-\u0C8C]
| [\u0C8E-\u0C90]
| [\u0C92-\u0CA8]
| [\u0CAA-\u0CB3]
| [\u0CB5-\u0CB9]
| '\u0CBD'
| '\u0CDE'
| [\u0CE0-\u0CE1]
| [\u0D05-\u0D0C]
| [\u0D0E-\u0D10]
| [\u0D12-\u0D28]
| [\u0D2A-\u0D39]
| [\u0D60-\u0D61]
| [\u0D85-\u0D96]
| [\u0D9A-\u0DB1]
| [\u0DB3-\u0DBB]
| '\u0DBD'
| [\u0DC0-\u0DC6]
| [\u0E01-\u0E30]
| [\u0E32-\u0E33]
| [\u0E40-\u0E45]
| '\u0E46'
| [\u0E81-\u0E82]
| '\u0E84'
| [\u0E87-\u0E88]
| '\u0E8A'
| '\u0E8D'
| [\u0E94-\u0E97]
| [\u0E99-\u0E9F]
| [\u0EA1-\u0EA3]
| '\u0EA5'
| '\u0EA7'
| [\u0EAA-\u0EAB]
| [\u0EAD-\u0EB0]
| [\u0EB2-\u0EB3]
| '\u0EBD'
| [\u0EC0-\u0EC4]
| '\u0EC6'
| [\u0EDC-\u0EDD]
| '\u0F00'
| [\u0F40-\u0F47]
| [\u0F49-\u0F6A]
| [\u0F88-\u0F8B]
| [\u1000-\u1021]
| [\u1023-\u1027]
| [\u1029-\u102A]
| [\u1050-\u1055]
| [\u10A0-\u10C5]
| [\u10D0-\u10FA]
| '\u10FC'
| [\u1100-\u1159]
| [\u115F-\u11A2]
| [\u11A8-\u11F9]
| [\u1200-\u1248]
| [\u124A-\u124D]
| [\u1250-\u1256]
| '\u1258'
| [\u125A-\u125D]
| [\u1260-\u1288]
| [\u128A-\u128D]
| [\u1290-\u12B0]
| [\u12B2-\u12B5]
| [\u12B8-\u12BE]
| '\u12C0'
| [\u12C2-\u12C5]
| [\u12C8-\u12D6]
| [\u12D8-\u1310]
| [\u1312-\u1315]
| [\u1318-\u135A]
| [\u1380-\u138F]
| [\u13A0-\u13F4]
| [\u1401-\u166C]
| [\u166F-\u1676]
| [\u1681-\u169A]
| [\u16A0-\u16EA]
| [\u16EE-\u16F0]
| [\u1700-\u170C]
| [\u170E-\u1711]
| [\u1720-\u1731]
| [\u1740-\u1751]
| [\u1760-\u176C]
| [\u176E-\u1770]
| [\u1780-\u17B3]
| '\u17D7'
| '\u17DC'
| [\u1820-\u1842]
| '\u1843'
| [\u1844-\u1877]
| [\u1880-\u18A8]
| [\u1900-\u191C]
| [\u1950-\u196D]
| [\u1970-\u1974]
| [\u1980-\u19A9]
| [\u19C1-\u19C7]
| [\u1A00-\u1A16]
| [\u1D00-\u1D2B]
| [\u1D2C-\u1D61]
| [\u1D62-\u1D77]
| '\u1D78'
| [\u1D79-\u1D9A]
| [\u1D9B-\u1DBF]
| [\u1E00-\u1E9B]
| [\u1EA0-\u1EF9]
| [\u1F00-\u1F15]
| [\u1F18-\u1F1D]
| [\u1F20-\u1F45]
| [\u1F48-\u1F4D]
| [\u1F50-\u1F57]
| '\u1F59'
| '\u1F5B'
| '\u1F5D'
| [\u1F5F-\u1F7D]
| [\u1F80-\u1FB4]
| [\u1FB6-\u1FBC]
| '\u1FBE'
| [\u1FC2-\u1FC4]
| [\u1FC6-\u1FCC]
| [\u1FD0-\u1FD3]
| [\u1FD6-\u1FDB]
| [\u1FE0-\u1FEC]
| [\u1FF2-\u1FF4]
| [\u1FF6-\u1FFC]
| '\u2071'
| '\u207F'
| [\u2090-\u2094]
| '\u2102'
| '\u2107'
| [\u210A-\u2113]
| '\u2115'
| '\u2118'
| [\u2119-\u211D]
| '\u2124'
| '\u2126'
| '\u2128'
| [\u212A-\u212D]
| '\u212E'
| [\u212F-\u2131]
| [\u2133-\u2134]
| [\u2135-\u2138]
| '\u2139'
| [\u213C-\u213F]
| [\u2145-\u2149]
| [\u2160-\u2183]
| [\u2C00-\u2C2E]
| [\u2C30-\u2C5E]
| [\u2C80-\u2CE4]
| [\u2D00-\u2D25]
| [\u2D30-\u2D65]
| '\u2D6F'
| [\u2D80-\u2D96]
| [\u2DA0-\u2DA6]
| [\u2DA8-\u2DAE]
| [\u2DB0-\u2DB6]
| [\u2DB8-\u2DBE]
| [\u2DC0-\u2DC6]
| [\u2DC8-\u2DCE]
| [\u2DD0-\u2DD6]
| [\u2DD8-\u2DDE]
| '\u3005'
| '\u3006'
| '\u3007'
| [\u3021-\u3029]
| [\u3031-\u3035]
| [\u3038-\u303A]
| '\u303B'
| '\u303C'
| [\u3041-\u3096]
| [\u309B-\u309C]
| [\u309D-\u309E]
| '\u309F'
| [\u30A1-\u30FA]
| [\u30FC-\u30FE]
| '\u30FF'
| [\u3105-\u312C]
| [\u3131-\u318E]
| [\u31A0-\u31B7]
| [\u31F0-\u31FF]
| [\u3400-\u4DB5]
| [\u4E00-\u9FBB]
| [\uA000-\uA014]
| '\uA015'
| [\uA016-\uA48C]
| [\uA800-\uA801]
| [\uA803-\uA805]
| [\uA807-\uA80A]
| [\uA80C-\uA822]
| [\uAC00-\uD7A3]
| [\uF900-\uFA2D]
| [\uFA30-\uFA6A]
| [\uFA70-\uFAD9]
| [\uFB00-\uFB06]
| [\uFB13-\uFB17]
| '\uFB1D'
| [\uFB1F-\uFB28]
| [\uFB2A-\uFB36]
| [\uFB38-\uFB3C]
| '\uFB3E'
| [\uFB40-\uFB41]
| [\uFB43-\uFB44]
| [\uFB46-\uFBB1]
| [\uFBD3-\uFD3D]
| [\uFD50-\uFD8F]
| [\uFD92-\uFDC7]
| [\uFDF0-\uFDFB]
| [\uFE70-\uFE74]
| [\uFE76-\uFEFC]
| [\uFF21-\uFF3A]
| [\uFF41-\uFF5A]
| [\uFF66-\uFF6F]
| '\uFF70'
| [\uFF71-\uFF9D]
| [\uFF9E-\uFF9F]
| [\uFFA0-\uFFBE]
| [\uFFC2-\uFFC7]
| [\uFFCA-\uFFCF]
| [\uFFD2-\uFFD7]
| [\uFFDA-\uFFDC]
;
fragment ID_CONTINUE
: ID_START
| [0-9]
| [\u0300-\u036F]
| [\u0483-\u0486]
| [\u0591-\u05B9]
| [\u05BB-\u05BD]
| '\u05BF'
| [\u05C1-\u05C2]
| [\u05C4-\u05C5]
| '\u05C7'
| [\u0610-\u0615]
| [\u064B-\u065E]
| [\u0660-\u0669]
| '\u0670'
| [\u06D6-\u06DC]
| [\u06DF-\u06E4]
| [\u06E7-\u06E8]
| [\u06EA-\u06ED]
| [\u06F0-\u06F9]
| '\u0711'
| [\u0730-\u074A]
| [\u07A6-\u07B0]
| [\u0901-\u0902]
| '\u0903'
| '\u093C'
| [\u093E-\u0940]
| [\u0941-\u0948]
| [\u0949-\u094C]
| '\u094D'
| [\u0951-\u0954]
| [\u0962-\u0963]
| [\u0966-\u096F]
| '\u0981'
| [\u0982-\u0983]
| '\u09BC'
| [\u09BE-\u09C0]
| [\u09C1-\u09C4]
| [\u09C7-\u09C8]
| [\u09CB-\u09CC]
| '\u09CD'
| '\u09D7'
| [\u09E2-\u09E3]
| [\u09E6-\u09EF]
| [\u0A01-\u0A02]
| '\u0A03'
| '\u0A3C'
| [\u0A3E-\u0A40]
| [\u0A41-\u0A42]
| [\u0A47-\u0A48]
| [\u0A4B-\u0A4D]
| [\u0A66-\u0A6F]
| [\u0A70-\u0A71]
| [\u0A81-\u0A82]
| '\u0A83'
| '\u0ABC'
| [\u0ABE-\u0AC0]
| [\u0AC1-\u0AC5]
| [\u0AC7-\u0AC8]
| '\u0AC9'
| [\u0ACB-\u0ACC]
| '\u0ACD'
| [\u0AE2-\u0AE3]
| [\u0AE6-\u0AEF]
| '\u0B01'
| [\u0B02-\u0B03]
| '\u0B3C'
| '\u0B3E'
| '\u0B3F'
| '\u0B40'
| [\u0B41-\u0B43]
| [\u0B47-\u0B48]
| [\u0B4B-\u0B4C]
| '\u0B4D'
| '\u0B56'
| '\u0B57'
| [\u0B66-\u0B6F]
| '\u0B82'
| [\u0BBE-\u0BBF]
| '\u0BC0'
| [\u0BC1-\u0BC2]
| [\u0BC6-\u0BC8]
| [\u0BCA-\u0BCC]
| '\u0BCD'
| '\u0BD7'
| [\u0BE6-\u0BEF]
| [\u0C01-\u0C03]
| [\u0C3E-\u0C40]
| [\u0C41-\u0C44]
| [\u0C46-\u0C48]
| [\u0C4A-\u0C4D]
| [\u0C55-\u0C56]
| [\u0C66-\u0C6F]
| [\u0C82-\u0C83]
| '\u0CBC'
| '\u0CBE'
| '\u0CBF'
| [\u0CC0-\u0CC4]
| '\u0CC6'
| [\u0CC7-\u0CC8]
| [\u0CCA-\u0CCB]
| [\u0CCC-\u0CCD]
| [\u0CD5-\u0CD6]
| [\u0CE6-\u0CEF]
| [\u0D02-\u0D03]
| [\u0D3E-\u0D40]
| [\u0D41-\u0D43]
| [\u0D46-\u0D48]
| [\u0D4A-\u0D4C]
| '\u0D4D'
| '\u0D57'
| [\u0D66-\u0D6F]
| [\u0D82-\u0D83]
| '\u0DCA'
| [\u0DCF-\u0DD1]
| [\u0DD2-\u0DD4]
| '\u0DD6'
| [\u0DD8-\u0DDF]
| [\u0DF2-\u0DF3]
| '\u0E31'
| [\u0E34-\u0E3A]
| [\u0E47-\u0E4E]
| [\u0E50-\u0E59]
| '\u0EB1'
| [\u0EB4-\u0EB9]
| [\u0EBB-\u0EBC]
| [\u0EC8-\u0ECD]
| [\u0ED0-\u0ED9]
| [\u0F18-\u0F19]
| [\u0F20-\u0F29]
| '\u0F35'
| '\u0F37'
| '\u0F39'
| [\u0F3E-\u0F3F]
| [\u0F71-\u0F7E]
| '\u0F7F'
| [\u0F80-\u0F84]
| [\u0F86-\u0F87]
| [\u0F90-\u0F97]
| [\u0F99-\u0FBC]
| '\u0FC6'
| '\u102C'
| [\u102D-\u1030]
| '\u1031'
| '\u1032'
| [\u1036-\u1037]
| '\u1038'
| '\u1039'
| [\u1040-\u1049]
| [\u1056-\u1057]
| [\u1058-\u1059]
| '\u135F'
| [\u1369-\u1371]
| [\u1712-\u1714]
| [\u1732-\u1734]
| [\u1752-\u1753]
| [\u1772-\u1773]
| '\u17B6'
| [\u17B7-\u17BD]
| [\u17BE-\u17C5]
| '\u17C6'
| [\u17C7-\u17C8]
| [\u17C9-\u17D3]
| '\u17DD'
| [\u17E0-\u17E9]
| [\u180B-\u180D]
| [\u1810-\u1819]
| '\u18A9'
| [\u1920-\u1922]
| [\u1923-\u1926]
| [\u1927-\u1928]
| [\u1929-\u192B]
| [\u1930-\u1931]
| '\u1932'
| [\u1933-\u1938]
| [\u1939-\u193B]
| [\u1946-\u194F]
| [\u19B0-\u19C0]
| [\u19C8-\u19C9]
| [\u19D0-\u19D9]
| [\u1A17-\u1A18]
| [\u1A19-\u1A1B]
| [\u1DC0-\u1DC3]
| [\u203F-\u2040]
| '\u2054'
| [\u20D0-\u20DC]
| '\u20E1'
| [\u20E5-\u20EB]
| [\u302A-\u302F]
| [\u3099-\u309A]
| '\uA802'
| '\uA806'
| '\uA80B'
| [\uA823-\uA824]
| [\uA825-\uA826]
| '\uA827'
| '\uFB1E'
| [\uFE00-\uFE0F]
| [\uFE20-\uFE23]
| [\uFE33-\uFE34]
| [\uFE4D-\uFE4F]
| [\uFF10-\uFF19]
| '\uFF3F'
;
然而，无论我给它什么输入，它都永远不会匹配任何东西。
输入＆＃34;测试＆＃34;：
line 1:0 extraneous input 'test' expecting {<EOF>, '{', TEXT}
输入＆＃34; {}＆＃34;：
line 1:0 extraneous input '{}' expecting {<EOF>, '{', TEXT}
输入＆＃34; {test}＆＃34;：
line 1:0 extraneous input '{test}' expecting {<EOF>, '{', TEXT}
我是否会错过一些基本的东西？由于某些原因，无论输入是什么，词法分析器只是将其作为整个令牌返回而不是将其复原。在示例2和3中，＆＃39; {＆＃39;本应该符合规则，但没有。
详细错误：
enter source_stream, LT(1)={test}
enter segments, LT(1)={test}
line 1:0 extraneous input '{test}' expecting {<EOF>, '{', TEXT}
exit segments, LT(1)=<EOF>
consume [@1,6:5='<EOF>',<-1>,1:6] rule source_stream
exit source_stream, LT(1)=<EOF>
答案 0 :(得分：0)
好吧，经过仔细的思考和审议，我发现，我想要的是antlr的lexer + parser语法是不可能的，因为所有内容都会在一个大范围的词法规则中匹配。解决方案：将词法分析器和解析器拆分为两个语法并使用词法分析器模式进行正确的解析：
Lexer语法：
lexer grammar formatterLexer;
OPEN_RF: '{' -> pushMode(RuleMode);
CHAR_NOCURLY
: ~('{' | '}')
;
mode StringMode;
CHAR_NORIGHTB
: ~(']')
;
RIX: ']' -> popMode;
mode RuleMode;
EXLM: '!' ;
COLON: ':' ;
DOT: '.' ;
CLOSE_RF: '}' -> popMode;
LIX: '[' -> pushMode(StringMode);
LS: 's';
LT: '<';
MT: '>';
EQ: '=';
EXP: '^';
PLUS: '+';
MINUS: '-';
SPACE: ' ';
HASH: '#';
ZERO: '0';
TYPE: 'b' | 'c' | 'd' | 'e' | 'E' | 'f' | 'g' | 'G' | 'n' | 'o' | 's' | 'x' | 'X' | '%';
COMMA: ',';
CHAR: ~('{' | '}') ;
INTEGER
: DECIMAL_INTEGER
| OCT_INTEGER
| HEX_INTEGER
| BIN_INTEGER
;
DECIMAL_INTEGER
: NON_ZERO_DIGIT DIGIT*
| '0'+
;
OCT_INTEGER
: '0' [oO] OCT_DIGIT+
;
HEX_INTEGER
: '0' [xX] HEX_DIGIT+
;
BIN_INTEGER
: '0' [bB]? BIN_DIGIT+
;
NAME
: ID_START ID_CONTINUE*
;
fragment NON_ZERO_DIGIT
: [1-9]
;
fragment DIGIT
: [0-9]
;
fragment OCT_DIGIT
: [0-7]
;
fragment HEX_DIGIT
: [0-9a-fA-F]
;
fragment BIN_DIGIT
: [01]
;
fragment ID_START
: '_'
| [A-Z]
| [a-z]
| '\u00AA'
| '\u00B5'
| '\u00BA'
| [\u00C0-\u00D6]
| [\u00D8-\u00F6]
| [\u00F8-\u01BA]
| '\u01BB'
| [\u01BC-\u01BF]
| [\u01C0-\u01C3]
| [\u01C4-\u0241]
| [\u0250-\u02AF]
| [\u02B0-\u02C1]
| [\u02C6-\u02D1]
| [\u02E0-\u02E4]
| '\u02EE'
| '\u037A'
| '\u0386'
| [\u0388-\u038A]
| '\u038C'
| [\u038E-\u03A1]
| [\u03A3-\u03CE]
| [\u03D0-\u03F5]
| [\u03F7-\u0481]
| [\u048A-\u04CE]
| [\u04D0-\u04F9]
| [\u0500-\u050F]
| [\u0531-\u0556]
| '\u0559'
| [\u0561-\u0587]
| [\u05D0-\u05EA]
| [\u05F0-\u05F2]
| [\u0621-\u063A]
| '\u0640'
| [\u0641-\u064A]
| [\u066E-\u066F]
| [\u0671-\u06D3]
| '\u06D5'
| [\u06E5-\u06E6]
| [\u06EE-\u06EF]
| [\u06FA-\u06FC]
| '\u06FF'
| '\u0710'
| [\u0712-\u072F]
| [\u074D-\u076D]
| [\u0780-\u07A5]
| '\u07B1'
| [\u0904-\u0939]
| '\u093D'
| '\u0950'
| [\u0958-\u0961]
| '\u097D'
| [\u0985-\u098C]
| [\u098F-\u0990]
| [\u0993-\u09A8]
| [\u09AA-\u09B0]
| '\u09B2'
| [\u09B6-\u09B9]
| '\u09BD'
| '\u09CE'
| [\u09DC-\u09DD]
| [\u09DF-\u09E1]
| [\u09F0-\u09F1]
| [\u0A05-\u0A0A]
| [\u0A0F-\u0A10]
| [\u0A13-\u0A28]
| [\u0A2A-\u0A30]
| [\u0A32-\u0A33]
| [\u0A35-\u0A36]
| [\u0A38-\u0A39]
| [\u0A59-\u0A5C]
| '\u0A5E'
| [\u0A72-\u0A74]
| [\u0A85-\u0A8D]
| [\u0A8F-\u0A91]
| [\u0A93-\u0AA8]
| [\u0AAA-\u0AB0]
| [\u0AB2-\u0AB3]
| [\u0AB5-\u0AB9]
| '\u0ABD'
| '\u0AD0'
| [\u0AE0-\u0AE1]
| [\u0B05-\u0B0C]
| [\u0B0F-\u0B10]
| [\u0B13-\u0B28]
| [\u0B2A-\u0B30]
| [\u0B32-\u0B33]
| [\u0B35-\u0B39]
| '\u0B3D'
| [\u0B5C-\u0B5D]
| [\u0B5F-\u0B61]
| '\u0B71'
| '\u0B83'
| [\u0B85-\u0B8A]
| [\u0B8E-\u0B90]
| [\u0B92-\u0B95]
| [\u0B99-\u0B9A]
| '\u0B9C'
| [\u0B9E-\u0B9F]
| [\u0BA3-\u0BA4]
| [\u0BA8-\u0BAA]
| [\u0BAE-\u0BB9]
| [\u0C05-\u0C0C]
| [\u0C0E-\u0C10]
| [\u0C12-\u0C28]
| [\u0C2A-\u0C33]
| [\u0C35-\u0C39]
| [\u0C60-\u0C61]
| [\u0C85-\u0C8C]
| [\u0C8E-\u0C90]
| [\u0C92-\u0CA8]
| [\u0CAA-\u0CB3]
| [\u0CB5-\u0CB9]
| '\u0CBD'
| '\u0CDE'
| [\u0CE0-\u0CE1]
| [\u0D05-\u0D0C]
| [\u0D0E-\u0D10]
| [\u0D12-\u0D28]
| [\u0D2A-\u0D39]
| [\u0D60-\u0D61]
| [\u0D85-\u0D96]
| [\u0D9A-\u0DB1]
| [\u0DB3-\u0DBB]
| '\u0DBD'
| [\u0DC0-\u0DC6]
| [\u0E01-\u0E30]
| [\u0E32-\u0E33]
| [\u0E40-\u0E45]
| '\u0E46'
| [\u0E81-\u0E82]
| '\u0E84'
| [\u0E87-\u0E88]
| '\u0E8A'
| '\u0E8D'
| [\u0E94-\u0E97]
| [\u0E99-\u0E9F]
| [\u0EA1-\u0EA3]
| '\u0EA5'
| '\u0EA7'
| [\u0EAA-\u0EAB]
| [\u0EAD-\u0EB0]
| [\u0EB2-\u0EB3]
| '\u0EBD'
| [\u0EC0-\u0EC4]
| '\u0EC6'
| [\u0EDC-\u0EDD]
| '\u0F00'
| [\u0F40-\u0F47]
| [\u0F49-\u0F6A]
| [\u0F88-\u0F8B]
| [\u1000-\u1021]
| [\u1023-\u1027]
| [\u1029-\u102A]
| [\u1050-\u1055]
| [\u10A0-\u10C5]
| [\u10D0-\u10FA]
| '\u10FC'
| [\u1100-\u1159]
| [\u115F-\u11A2]
| [\u11A8-\u11F9]
| [\u1200-\u1248]
| [\u124A-\u124D]
| [\u1250-\u1256]
| '\u1258'
| [\u125A-\u125D]
| [\u1260-\u1288]
| [\u128A-\u128D]
| [\u1290-\u12B0]
| [\u12B2-\u12B5]
| [\u12B8-\u12BE]
| '\u12C0'
| [\u12C2-\u12C5]
| [\u12C8-\u12D6]
| [\u12D8-\u1310]
| [\u1312-\u1315]
| [\u1318-\u135A]
| [\u1380-\u138F]
| [\u13A0-\u13F4]
| [\u1401-\u166C]
| [\u166F-\u1676]
| [\u1681-\u169A]
| [\u16A0-\u16EA]
| [\u16EE-\u16F0]
| [\u1700-\u170C]
| [\u170E-\u1711]
| [\u1720-\u1731]
| [\u1740-\u1751]
| [\u1760-\u176C]
| [\u176E-\u1770]
| [\u1780-\u17B3]
| '\u17D7'
| '\u17DC'
| [\u1820-\u1842]
| '\u1843'
| [\u1844-\u1877]
| [\u1880-\u18A8]
| [\u1900-\u191C]
| [\u1950-\u196D]
| [\u1970-\u1974]
| [\u1980-\u19A9]
| [\u19C1-\u19C7]
| [\u1A00-\u1A16]
| [\u1D00-\u1D2B]
| [\u1D2C-\u1D61]
| [\u1D62-\u1D77]
| '\u1D78'
| [\u1D79-\u1D9A]
| [\u1D9B-\u1DBF]
| [\u1E00-\u1E9B]
| [\u1EA0-\u1EF9]
| [\u1F00-\u1F15]
| [\u1F18-\u1F1D]
| [\u1F20-\u1F45]
| [\u1F48-\u1F4D]
| [\u1F50-\u1F57]
| '\u1F59'
| '\u1F5B'
| '\u1F5D'
| [\u1F5F-\u1F7D]
| [\u1F80-\u1FB4]
| [\u1FB6-\u1FBC]
| '\u1FBE'
| [\u1FC2-\u1FC4]
| [\u1FC6-\u1FCC]
| [\u1FD0-\u1FD3]
| [\u1FD6-\u1FDB]
| [\u1FE0-\u1FEC]
| [\u1FF2-\u1FF4]
| [\u1FF6-\u1FFC]
| '\u2071'
| '\u207F'
| [\u2090-\u2094]
| '\u2102'
| '\u2107'
| [\u210A-\u2113]
| '\u2115'
| '\u2118'
| [\u2119-\u211D]
| '\u2124'
| '\u2126'
| '\u2128'
| [\u212A-\u212D]
| '\u212E'
| [\u212F-\u2131]
| [\u2133-\u2134]
| [\u2135-\u2138]
| '\u2139'
| [\u213C-\u213F]
| [\u2145-\u2149]
| [\u2160-\u2183]
| [\u2C00-\u2C2E]
| [\u2C30-\u2C5E]
| [\u2C80-\u2CE4]
| [\u2D00-\u2D25]
| [\u2D30-\u2D65]
| '\u2D6F'
| [\u2D80-\u2D96]
| [\u2DA0-\u2DA6]
| [\u2DA8-\u2DAE]
| [\u2DB0-\u2DB6]
| [\u2DB8-\u2DBE]
| [\u2DC0-\u2DC6]
| [\u2DC8-\u2DCE]
| [\u2DD0-\u2DD6]
| [\u2DD8-\u2DDE]
| '\u3005'
| '\u3006'
| '\u3007'
| [\u3021-\u3029]
| [\u3031-\u3035]
| [\u3038-\u303A]
| '\u303B'
| '\u303C'
| [\u3041-\u3096]
| [\u309B-\u309C]
| [\u309D-\u309E]
| '\u309F'
| [\u30A1-\u30FA]
| [\u30FC-\u30FE]
| '\u30FF'
| [\u3105-\u312C]
| [\u3131-\u318E]
| [\u31A0-\u31B7]
| [\u31F0-\u31FF]
| [\u3400-\u4DB5]
| [\u4E00-\u9FBB]
| [\uA000-\uA014]
| '\uA015'
| [\uA016-\uA48C]
| [\uA800-\uA801]
| [\uA803-\uA805]
| [\uA807-\uA80A]
| [\uA80C-\uA822]
| [\uAC00-\uD7A3]
| [\uF900-\uFA2D]
| [\uFA30-\uFA6A]
| [\uFA70-\uFAD9]
| [\uFB00-\uFB06]
| [\uFB13-\uFB17]
| '\uFB1D'
| [\uFB1F-\uFB28]
| [\uFB2A-\uFB36]
| [\uFB38-\uFB3C]
| '\uFB3E'
| [\uFB40-\uFB41]
| [\uFB43-\uFB44]
| [\uFB46-\uFBB1]
| [\uFBD3-\uFD3D]
| [\uFD50-\uFD8F]
| [\uFD92-\uFDC7]
| [\uFDF0-\uFDFB]
| [\uFE70-\uFE74]
| [\uFE76-\uFEFC]
| [\uFF21-\uFF3A]
| [\uFF41-\uFF5A]
| [\uFF66-\uFF6F]
| '\uFF70'
| [\uFF71-\uFF9D]
| [\uFF9E-\uFF9F]
| [\uFFA0-\uFFBE]
| [\uFFC2-\uFFC7]
| [\uFFCA-\uFFCF]
| [\uFFD2-\uFFD7]
| [\uFFDA-\uFFDC]
;
fragment ID_CONTINUE
: ID_START
| [0-9]
| [\u0300-\u036F]
| [\u0483-\u0486]
| [\u0591-\u05B9]
| [\u05BB-\u05BD]
| '\u05BF'
| [\u05C1-\u05C2]
| [\u05C4-\u05C5]
| '\u05C7'
| [\u0610-\u0615]
| [\u064B-\u065E]
| [\u0660-\u0669]
| '\u0670'
| [\u06D6-\u06DC]
| [\u06DF-\u06E4]
| [\u06E7-\u06E8]
| [\u06EA-\u06ED]
| [\u06F0-\u06F9]
| '\u0711'
| [\u0730-\u074A]
| [\u07A6-\u07B0]
| [\u0901-\u0902]
| '\u0903'
| '\u093C'
| [\u093E-\u0940]
| [\u0941-\u0948]
| [\u0949-\u094C]
| '\u094D'
| [\u0951-\u0954]
| [\u0962-\u0963]
| [\u0966-\u096F]
| '\u0981'
| [\u0982-\u0983]
| '\u09BC'
| [\u09BE-\u09C0]
| [\u09C1-\u09C4]
| [\u09C7-\u09C8]
| [\u09CB-\u09CC]
| '\u09CD'
| '\u09D7'
| [\u09E2-\u09E3]
| [\u09E6-\u09EF]
| [\u0A01-\u0A02]
| '\u0A03'
| '\u0A3C'
| [\u0A3E-\u0A40]
| [\u0A41-\u0A42]
| [\u0A47-\u0A48]
| [\u0A4B-\u0A4D]
| [\u0A66-\u0A6F]
| [\u0A70-\u0A71]
| [\u0A81-\u0A82]
| '\u0A83'
| '\u0ABC'
| [\u0ABE-\u0AC0]
| [\u0AC1-\u0AC5]
| [\u0AC7-\u0AC8]
| '\u0AC9'
| [\u0ACB-\u0ACC]
| '\u0ACD'
| [\u0AE2-\u0AE3]
| [\u0AE6-\u0AEF]
| '\u0B01'
| [\u0B02-\u0B03]
| '\u0B3C'
| '\u0B3E'
| '\u0B3F'
| '\u0B40'
| [\u0B41-\u0B43]
| [\u0B47-\u0B48]
| [\u0B4B-\u0B4C]
| '\u0B4D'
| '\u0B56'
| '\u0B57'
| [\u0B66-\u0B6F]
| '\u0B82'
| [\u0BBE-\u0BBF]
| '\u0BC0'
| [\u0BC1-\u0BC2]
| [\u0BC6-\u0BC8]
| [\u0BCA-\u0BCC]
| '\u0BCD'
| '\u0BD7'
| [\u0BE6-\u0BEF]
| [\u0C01-\u0C03]
| [\u0C3E-\u0C40]
| [\u0C41-\u0C44]
| [\u0C46-\u0C48]
| [\u0C4A-\u0C4D]
| [\u0C55-\u0C56]
| [\u0C66-\u0C6F]
| [\u0C82-\u0C83]
| '\u0CBC'
| '\u0CBE'
| '\u0CBF'
| [\u0CC0-\u0CC4]
| '\u0CC6'
| [\u0CC7-\u0CC8]
| [\u0CCA-\u0CCB]
| [\u0CCC-\u0CCD]
| [\u0CD5-\u0CD6]
| [\u0CE6-\u0CEF]
| [\u0D02-\u0D03]
| [\u0D3E-\u0D40]
| [\u0D41-\u0D43]
| [\u0D46-\u0D48]
| [\u0D4A-\u0D4C]
| '\u0D4D'
| '\u0D57'
| [\u0D66-\u0D6F]
| [\u0D82-\u0D83]
| '\u0DCA'
| [\u0DCF-\u0DD1]
| [\u0DD2-\u0DD4]
| '\u0DD6'
| [\u0DD8-\u0DDF]
| [\u0DF2-\u0DF3]
| '\u0E31'
| [\u0E34-\u0E3A]
| [\u0E47-\u0E4E]
| [\u0E50-\u0E59]
| '\u0EB1'
| [\u0EB4-\u0EB9]
| [\u0EBB-\u0EBC]
| [\u0EC8-\u0ECD]
| [\u0ED0-\u0ED9]
| [\u0F18-\u0F19]
| [\u0F20-\u0F29]
| '\u0F35'
| '\u0F37'
| '\u0F39'
| [\u0F3E-\u0F3F]
| [\u0F71-\u0F7E]
| '\u0F7F'
| [\u0F80-\u0F84]
| [\u0F86-\u0F87]
| [\u0F90-\u0F97]
| [\u0F99-\u0FBC]
| '\u0FC6'
| '\u102C'
| [\u102D-\u1030]
| '\u1031'
| '\u1032'
| [\u1036-\u1037]
| '\u1038'
| '\u1039'
| [\u1040-\u1049]
| [\u1056-\u1057]
| [\u1058-\u1059]
| '\u135F'
| [\u1369-\u1371]
| [\u1712-\u1714]
| [\u1732-\u1734]
| [\u1752-\u1753]
| [\u1772-\u1773]
| '\u17B6'
| [\u17B7-\u17BD]
| [\u17BE-\u17C5]
| '\u17C6'
| [\u17C7-\u17C8]
| [\u17C9-\u17D3]
| '\u17DD'
| [\u17E0-\u17E9]
| [\u180B-\u180D]
| [\u1810-\u1819]
| '\u18A9'
| [\u1920-\u1922]
| [\u1923-\u1926]
| [\u1927-\u1928]
| [\u1929-\u192B]
| [\u1930-\u1931]
| '\u1932'
| [\u1933-\u1938]
| [\u1939-\u193B]
| [\u1946-\u194F]
| [\u19B0-\u19C0]
| [\u19C8-\u19C9]
| [\u19D0-\u19D9]
| [\u1A17-\u1A18]
| [\u1A19-\u1A1B]
| [\u1DC0-\u1DC3]
| [\u203F-\u2040]
| '\u2054'
| [\u20D0-\u20DC]
| '\u20E1'
| [\u20E5-\u20EB]
| [\u302A-\u302F]
| [\u3099-\u309A]
| '\uA802'
| '\uA806'
| '\uA80B'
| [\uA823-\uA824]
| [\uA825-\uA826]
| '\uA827'
| '\uFB1E'
| [\uFE00-\uFE0F]
| [\uFE20-\uFE23]
| [\uFE33-\uFE34]
| [\uFE4D-\uFE4F]
| [\uFF10-\uFF19]
| '\uFF3F'
;
使用两种模式我可以模拟python格式化程序想要的内容。
语法：
parser grammar formatterParser;
options { tokenVocab = formatterLexer; }
source_stream
: segments EOF
;
segments
: segment*
;
segment
: (text | replacement_field)
;
text
: CHAR_NOCURLY+
;
replacement_field
: OPEN_RF field_name? (EXLM conversion)? (COLON format_spec)? CLOSE_RF
;
field_name
: arg_name ((DOT attribute_name) | LIX element_index RIX)*
;
arg_name
: (identifier | INTEGER)?
;
attribute_name
: identifier
;
element_index
: INTEGER | index_string
;
index_string
: CHAR_NORIGHTB+
;
identifier
: NAME
;
conversion
: LS
;
format_spec
: (fill? align)? sign? hash? zero? width? dash? precision? type?
;
fill
: CHAR
;
align
: LT | MT | EQ | EXP
;
sign
: PLUS | MINUS | SPACE
;
hash
: HASH
;
zero
: ZERO
;
width
: INTEGER
;
precision
: INTEGER
;
type
: TYPE
;
dash
: COMMA
;