Hello. I have written a simple composite grammar. Antlr 3.1 fails to
generate a lexer when the lexer grammar is in its own file; but
generates a lexer when the grammar is combined into one file. The
eventual grammar will be very large, so I need to implement it as a
composite grammar. What do I do? Is this a bug in the software, and why
does this problem not show up for the antlr v3 examples?
Clarification: by failing to generate a lexer, I do mean that the tool
fails to create a Vhdl2008Lexer.java file.
/* File Vhdl2008.g */
grammar Vhdl2008;
options {
language='Java';
}
import Vhdl2008LexerRules;
entity_declaration :
ENTITY Identifier IS
END (ENTITY)? (Identifier)? SEMICOLON
;
/* File Vhdl2008LexerRules.g */
lexer grammar Vhdl2008LexerRules;
END : ('E'|'e')('N'|'n')('D'|'d') ;
ENTITY : ('E'|'e')('N'|'n')('T'|'t')('I'|'i')('T'|'t')('Y'|'y') ;
IS : ('I'|'i')('S'|'s') ;
SEMICOLON : ';';
Identifier : ('A'..'Z'|'a'..'z') ( ('_')? 'A'..'Z'|'a'..'z'|'0'..'9' )*;
WS : (' '|'\t'|'\r'|'\n')+ {$channel=HIDDEN;};
--
aka: timotheus
web: http://tstotts.net/
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