How can I Ignore certain text in ANTLR4?
first of all, thank you in advance for your answer, this problem is killing me
- My first question is how can ignore certain text?
I wanna ignore certain text from my document, I have the next text:
And I wanna ignore the text enclosed by the rectangle...when the lexer find the "demandante" word it will stop to ignore...
I used this grammar
grammar A;
documento:((acciondemandante acciondemandado) | (acciondemandado acciondemandante));
acciondemandante: PALABRASDEMANDA informacionentidad+;
acciondemandado: PALABRASDEMANDADO informacionentidad+;
informacionentidad: nombres distancia? identificacion;
nombres: nombrenormal|nombremayuscula;
nombrenormal: WORDCAPITALIZE WORDCAPITALIZE+;
nombremayuscula: WORDUPPER WORDUPPER+;
distancia: WORDLOWER;
identificacion: tipo indicador? INT+;
tipo: cedula | NIT;
cedula: CEDULA | LCASE_LETTER LCASE_LETTER | UCASE_LETTER UCASE_LETTER;
indicador: WORDCAPITALIZE | WORDLOWER;
CEDULA: 'cedula' | 'cc' | 'CC';
NIT: 'NIT' | 'nit';
PALABRASDEMANDADO: 'demandados' | 'demandado';
PALABRASDEMANDA: 'demandante' | 'demandantes';
WORDUPPER: UCASE_LETTER UCASE_LETTER+;
WORDLOWER: LCASE_LETTER LCASE_LETTER+;
WORDCAPITALIZE: UCASE_LETTER LCASE_LETTER+;
LCASE_LETTER: 'a'..'z' | 'ñ' | 'á' | 'é' | 'í' | 'ó' | 'ú';
UCASE_LETTER: 'A'..'Z' | 'Ñ' | 'Á' | 'É' | 'Í' | 'Ó' | 'Ú';
INT: DIGIT+;
DIGIT: '0'..'9';
SPECIAL_CHAR: '.' -> skip;
WS : [ trn]+ -> skip;
//ANY: ~[ ]+;
I have tried a trick skipping the whitespaces WS : [ trn]+ -> skip; and then ignoring what is not whitespaces ANY: ~[ ]+; But it does not work because the lexer never recognize the ANY token...
What I would like my grammar to read
bullshit bullshit demandado Julian Solarte c.c 120109321 bullshit bullshit
- My second problem is that I get the "mismatched input ''" problem, and in order to resolve this problem I add this rule "SKIPEND: EOF ->skip;" but it does not works...
Thank you thank you so much.
java antlr antlr4
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
add a comment |
first of all, thank you in advance for your answer, this problem is killing me
- My first question is how can ignore certain text?
I wanna ignore certain text from my document, I have the next text:
And I wanna ignore the text enclosed by the rectangle...when the lexer find the "demandante" word it will stop to ignore...
I used this grammar
grammar A;
documento:((acciondemandante acciondemandado) | (acciondemandado acciondemandante));
acciondemandante: PALABRASDEMANDA informacionentidad+;
acciondemandado: PALABRASDEMANDADO informacionentidad+;
informacionentidad: nombres distancia? identificacion;
nombres: nombrenormal|nombremayuscula;
nombrenormal: WORDCAPITALIZE WORDCAPITALIZE+;
nombremayuscula: WORDUPPER WORDUPPER+;
distancia: WORDLOWER;
identificacion: tipo indicador? INT+;
tipo: cedula | NIT;
cedula: CEDULA | LCASE_LETTER LCASE_LETTER | UCASE_LETTER UCASE_LETTER;
indicador: WORDCAPITALIZE | WORDLOWER;
CEDULA: 'cedula' | 'cc' | 'CC';
NIT: 'NIT' | 'nit';
PALABRASDEMANDADO: 'demandados' | 'demandado';
PALABRASDEMANDA: 'demandante' | 'demandantes';
WORDUPPER: UCASE_LETTER UCASE_LETTER+;
WORDLOWER: LCASE_LETTER LCASE_LETTER+;
WORDCAPITALIZE: UCASE_LETTER LCASE_LETTER+;
LCASE_LETTER: 'a'..'z' | 'ñ' | 'á' | 'é' | 'í' | 'ó' | 'ú';
UCASE_LETTER: 'A'..'Z' | 'Ñ' | 'Á' | 'É' | 'Í' | 'Ó' | 'Ú';
INT: DIGIT+;
DIGIT: '0'..'9';
SPECIAL_CHAR: '.' -> skip;
WS : [ trn]+ -> skip;
//ANY: ~[ ]+;
I have tried a trick skipping the whitespaces WS : [ trn]+ -> skip; and then ignoring what is not whitespaces ANY: ~[ ]+; But it does not work because the lexer never recognize the ANY token...
What I would like my grammar to read
bullshit bullshit demandado Julian Solarte c.c 120109321 bullshit bullshit
- My second problem is that I get the "mismatched input ''" problem, and in order to resolve this problem I add this rule "SKIPEND: EOF ->skip;" but it does not works...
Thank you thank you so much.
java antlr antlr4
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45
add a comment |
first of all, thank you in advance for your answer, this problem is killing me
- My first question is how can ignore certain text?
I wanna ignore certain text from my document, I have the next text:
And I wanna ignore the text enclosed by the rectangle...when the lexer find the "demandante" word it will stop to ignore...
I used this grammar
grammar A;
documento:((acciondemandante acciondemandado) | (acciondemandado acciondemandante));
acciondemandante: PALABRASDEMANDA informacionentidad+;
acciondemandado: PALABRASDEMANDADO informacionentidad+;
informacionentidad: nombres distancia? identificacion;
nombres: nombrenormal|nombremayuscula;
nombrenormal: WORDCAPITALIZE WORDCAPITALIZE+;
nombremayuscula: WORDUPPER WORDUPPER+;
distancia: WORDLOWER;
identificacion: tipo indicador? INT+;
tipo: cedula | NIT;
cedula: CEDULA | LCASE_LETTER LCASE_LETTER | UCASE_LETTER UCASE_LETTER;
indicador: WORDCAPITALIZE | WORDLOWER;
CEDULA: 'cedula' | 'cc' | 'CC';
NIT: 'NIT' | 'nit';
PALABRASDEMANDADO: 'demandados' | 'demandado';
PALABRASDEMANDA: 'demandante' | 'demandantes';
WORDUPPER: UCASE_LETTER UCASE_LETTER+;
WORDLOWER: LCASE_LETTER LCASE_LETTER+;
WORDCAPITALIZE: UCASE_LETTER LCASE_LETTER+;
LCASE_LETTER: 'a'..'z' | 'ñ' | 'á' | 'é' | 'í' | 'ó' | 'ú';
UCASE_LETTER: 'A'..'Z' | 'Ñ' | 'Á' | 'É' | 'Í' | 'Ó' | 'Ú';
INT: DIGIT+;
DIGIT: '0'..'9';
SPECIAL_CHAR: '.' -> skip;
WS : [ trn]+ -> skip;
//ANY: ~[ ]+;
I have tried a trick skipping the whitespaces WS : [ trn]+ -> skip; and then ignoring what is not whitespaces ANY: ~[ ]+; But it does not work because the lexer never recognize the ANY token...
What I would like my grammar to read
bullshit bullshit demandado Julian Solarte c.c 120109321 bullshit bullshit
- My second problem is that I get the "mismatched input ''" problem, and in order to resolve this problem I add this rule "SKIPEND: EOF ->skip;" but it does not works...
Thank you thank you so much.
java antlr antlr4
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
first of all, thank you in advance for your answer, this problem is killing me
- My first question is how can ignore certain text?
I wanna ignore certain text from my document, I have the next text:
And I wanna ignore the text enclosed by the rectangle...when the lexer find the "demandante" word it will stop to ignore...
I used this grammar
grammar A;
documento:((acciondemandante acciondemandado) | (acciondemandado acciondemandante));
acciondemandante: PALABRASDEMANDA informacionentidad+;
acciondemandado: PALABRASDEMANDADO informacionentidad+;
informacionentidad: nombres distancia? identificacion;
nombres: nombrenormal|nombremayuscula;
nombrenormal: WORDCAPITALIZE WORDCAPITALIZE+;
nombremayuscula: WORDUPPER WORDUPPER+;
distancia: WORDLOWER;
identificacion: tipo indicador? INT+;
tipo: cedula | NIT;
cedula: CEDULA | LCASE_LETTER LCASE_LETTER | UCASE_LETTER UCASE_LETTER;
indicador: WORDCAPITALIZE | WORDLOWER;
CEDULA: 'cedula' | 'cc' | 'CC';
NIT: 'NIT' | 'nit';
PALABRASDEMANDADO: 'demandados' | 'demandado';
PALABRASDEMANDA: 'demandante' | 'demandantes';
WORDUPPER: UCASE_LETTER UCASE_LETTER+;
WORDLOWER: LCASE_LETTER LCASE_LETTER+;
WORDCAPITALIZE: UCASE_LETTER LCASE_LETTER+;
LCASE_LETTER: 'a'..'z' | 'ñ' | 'á' | 'é' | 'í' | 'ó' | 'ú';
UCASE_LETTER: 'A'..'Z' | 'Ñ' | 'Á' | 'É' | 'Í' | 'Ó' | 'Ú';
INT: DIGIT+;
DIGIT: '0'..'9';
SPECIAL_CHAR: '.' -> skip;
WS : [ trn]+ -> skip;
//ANY: ~[ ]+;
I have tried a trick skipping the whitespaces WS : [ trn]+ -> skip; and then ignoring what is not whitespaces ANY: ~[ ]+; But it does not work because the lexer never recognize the ANY token...
What I would like my grammar to read
bullshit bullshit demandado Julian Solarte c.c 120109321 bullshit bullshit
- My second problem is that I get the "mismatched input ''" problem, and in order to resolve this problem I add this rule "SKIPEND: EOF ->skip;" but it does not works...
Thank you thank you so much.
java antlr antlr4
java antlr antlr4
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
asked Nov 15 '18 at 3:18
Julian SolarteJulian Solarte
10110
10110
Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45
add a comment |
Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45
Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45
add a comment |
1 Answer
1
active
oldest
votes
My approach to this problem would be 2 steps:
- Find the keyword in the input stream (here demandado).
- Let a parser parse from this position without forcing an EOF for the input in the grammar. It will go as far as possible ignoring everything it doesn't understand after what was understood.
This will make your grammar much simpler and you will get a parse tree only for the relevant input.
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
My approach to this problem would be 2 steps:
- Find the keyword in the input stream (here demandado).
- Let a parser parse from this position without forcing an EOF for the input in the grammar. It will go as far as possible ignoring everything it doesn't understand after what was understood.
This will make your grammar much simpler and you will get a parse tree only for the relevant input.
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
add a comment |
My approach to this problem would be 2 steps:
- Find the keyword in the input stream (here demandado).
- Let a parser parse from this position without forcing an EOF for the input in the grammar. It will go as far as possible ignoring everything it doesn't understand after what was understood.
This will make your grammar much simpler and you will get a parse tree only for the relevant input.
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
add a comment |
My approach to this problem would be 2 steps:
- Find the keyword in the input stream (here demandado).
- Let a parser parse from this position without forcing an EOF for the input in the grammar. It will go as far as possible ignoring everything it doesn't understand after what was understood.
This will make your grammar much simpler and you will get a parse tree only for the relevant input.
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
My approach to this problem would be 2 steps:
- Find the keyword in the input stream (here demandado).
- Let a parser parse from this position without forcing an EOF for the input in the grammar. It will go as far as possible ignoring everything it doesn't understand after what was understood.
This will make your grammar much simpler and you will get a parse tree only for the relevant input.
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
answered Nov 15 '18 at 7:59
Mike LischkeMike Lischke
21.8k354106
21.8k354106
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
add a comment |
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
What about EOF? Why I skip it and it does not works?
– Julian Solarte
Nov 15 '18 at 20:32
add a comment |
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Why Antlr and not plain regex?
– Perdi Estaquel
Nov 15 '18 at 5:30
What do you mean?
– Julian Solarte
Nov 15 '18 at 16:15
What do I mean? It would seem a lot simpler to match with the following (not tested): Pattern.compile("^(Demandante:.*?)Demandados", MULTILINE | DOTALL); and use the captured text.
– Perdi Estaquel
Nov 15 '18 at 22:45