[antlr-interest] Spaces issues

[Jim Idle]

The interpreter is not likely to succeed with all those embedded fragments
and so on. Use the debugger and it will probably be fine.

Jim

> -----Original Message-----
> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
> bounces at antlr.org] On Behalf Of Fabien Hermenier
> Sent: Monday, March 28, 2011 11:47 PM
> To: antlr-interest at antlr.org
> Subject: [antlr-interest] Spaces issues
>
> Hi
>
> I starting to use ANTLR3 with AntlrWorks 3.4.1 on OS X and I have some
> issues with spaces. I've attached a sample antlr file describing my
> grammar (see 1st grammar)
>
> I'm trying to test 'litteralRange'. So using the interpreter, I write
> "[2 ..3]" or "[2 .. 3]" as input and it works fine. However, if I give
> the string "[2..3]" it does not work. I have followed the tutorial and
> declare the Lexer WS with the channel hidden to ignore spaces, but I
> still have strange issues with this.
>
> Another strange fact is that if I write a reduced grammar that just
> isolate the rule I want to test, it is fine (see 2nd grammar).
>
> Does anyone have a solution or a hint ?
>
> Regards
> Fabien.
>
> --- 1st grammar ---
> grammar ANTLRVJob5;
>
> options {
>      language = Java;
>      output = AST;
> }
> fragment Digit :'0'..'9';
> fragment Letter    :'a'..'z'|'A'..'Z';
> fragment HexDigit : (Digit|'a'..'f'|'A'..'F'); fragment HexPrefix:
> '0x'|'0X'; fragment HexNumber: HexPrefix HexDigit+; fragment OctNumber:
> '0' Digit+; fragment DecNumber: '0'|'1'..'9'Digit*; fragment Integer:
> HexNumber|OctNumber|DecNumber;
> fragment Name    : Fqdn;/*Letter(InnerContent*(Digit|Letter))?;*/
> fragment VarPrefix: '$';
> fragment EnumSep: ',';
> fragment Fqdn: Domain ('.' Domain)*;
> fragment Domain: Letter ('-'?(Letter|Digit))*;
> fragment InnerContent:    (Letter
>              |Digit
>              |'_'
>              |'-'
>              |'.'(Letter|Digit));
> fragment RRange: ']' (InnerContent*(Letter|Digit))?; fragment LRange:
> (Letter (Digit|Letter|'-'|'_'|'.')*)? '[';
>
>
> INTEGER    : Integer;
> NAME: Name;
> ENUMSEP: EnumSep;
> EQUALS    :    '=';
> ENDL    :    ';';
> PLUS    :    '+';
> MINUS    :    '-';
> TIMES    :    '*';
> VARIABLE:    VarPrefix(Letter|'_')(Letter|Digit|'_')*;
>
> COMMENT
>      :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
>      |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
>      ;
>
> WS    :    ('\n'|'\r'|'\t'|' ') {$channel=HIDDEN;};
>
>
> INNERCONTENT: InnerContent+;
> RRANGE:RRange;
> LRANGE: LRange;
> LVRANGE: VarPrefix LRange;
> CONSTRAINTIDENTIFIER: Letter(Letter|Digit|'_')*'(';
>
> litteral:    NAME|INTEGER;
> operator:    PLUS|TIMES;
>
> litteralRange:    '[' INTEGER '..' INTEGER ']';
>
> litteralEnum:    LRANGE INNERCONTENT /*(ENUMSEP INNERCONTENT)+']'
> RRANGE*/;
>
> variableEnum: LVRANGE INNERCONTENT (ENUMSEP INNERCONTENT)+  RRANGE;
> variableRange: LVRANGE INTEGER '..' INTEGER RRANGE;
>
> explodedSet:('{}'| '{'expression (ENUMSEP expression)*'}');
>
> atom    :    '(' expression ')'
>          |litteralRange
> ;
>
>
> expression: atom/* (operator expression)?*/;
>
> var_decl:    VARIABLE EQUALS expression ';';
>
> instruction:    var_decl;
>
> vjob_decl:    instruction*;
> ---
>
> --- 2nd grammar ---
> grammar some;
>
> COMMENT
>      :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
>      |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
>      ;
>
> WS  :   ( ' '
>          | '\t'
>          | '\r'
>          | '\n'
>          ) {$channel=HIDDEN;}
>      ;
> fragment Digit :'0'..'9';
> fragment HexDigit : (Digit|'a'..'f'|'A'..'F'); fragment HexPrefix:
> '0x'|'0X'; fragment HexNumber: HexPrefix HexDigit+; fragment OctNumber:
> '0' Digit+; fragment DecNumber: '0'|'1'..'9'Digit*; fragment Integer:
> HexNumber|OctNumber|DecNumber;
>
> INTEGER    : Integer;
> litteralRange:    '[' INTEGER '..' INTEGER ']';
> //litteralRange:    '[' INTEGER '..' INTEGER ']';
> ---
>
>
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