Created
December 13, 2011 20:19
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Paser para DSL de reglas en ANTLR
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grammar DSL; | |
/* | |
si datos.mensaje contiene "hidrostatica" o "pnd" o "corrosivas" | |
entonces devuelve "formato pruebas 01" | |
sino devuelve "no encontrado" | |
*/ | |
tokens { | |
SI='si'; | |
SINO='sino'; | |
CONTIENE='contiene'; | |
ENTONCES='entonces'; | |
DEVUELVE='devuelve'; | |
YADEMAS='y ademas'; | |
OTROMODO='de otro modo' | |
O='o'; | |
} | |
regla | |
: linea (NEWLINE linea)* EOF | |
; | |
linea | |
:(condicional|consecuencia) espacio (qid|DEVUELVE) espacio adicionales* | |
; | |
qid : ID ('.' ID)* ; | |
valor | |
:'"' .* '"'; | |
adicionales | |
: preposicion | |
| espacio | |
| consecuencia | |
| valor | |
| INT | |
| FLOAT | |
; | |
condicional | |
:SI | |
|SINO | |
; | |
consecuencia | |
:ENTONCES | |
|OTROMODO | |
; | |
preposicion | |
:CONTIENE | |
|YADEMAS | |
|O | |
; | |
espacio : | |
(' ' | |
| '\\t' | |
| '\\r' '\\n' { newline(); } | |
| '\\n' { newline(); } | |
) | |
; | |
palabra :('a'..'z'|'A'..'Z'|'0'..'9')+ | |
; | |
NEWLINE | |
: '\u000d'? '\u000a' // DOS/Windows(\r\n) + Unix(\n) | |
| '\u000d' // Mac OS 9 and earlier(\r) | |
; | |
INT : '0'..'9'+ | |
; | |
FLOAT | |
: ('0'..'9')+ '.' ('0'..'9')* EXPONENT? | |
| '.' ('0'..'9')+ EXPONENT? | |
| ('0'..'9')+ EXPONENT | |
; | |
fragment | |
EXPONENT : ('e'|'E') ('+'|'-')? ('0'..'9')+ ; | |
ID : ('_'|'a'..'z'|'A'..'Z') ('_'|'a'..'z'|'A'..'Z'|'0'..'9')* ; |
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