Doublequotes and Backslashes...

[Bertram]

Hello again,

I am new to Javacc, so there might be a very obvious solution to this.

I'm trying to parse a) "ABC\\" and b) "\\ABC" by somestuff() below. [<= both as they are, NOT escaped, 2 backslashes]
In case of:
a) the normalString() is used by javacc -> clearly not intended
b) there is an exception: Lexical error at line 1, column 1.  Encountered: "\\" (92), after : ""

------------------------------

options{
    IGNORE_CASE=false ;
    JAVA_UNICODE_ESCAPE= true ;
}
PARSER_BEGIN(Test)
package Mini;
public class Test {}
PARSER_END(Test)
TOKEN :
{
 < T_ASTERISK:          "*">
| < T_QUOTED:            ( (" ") ("\\\\") ("\\\"") ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
| < T_PROPERTY:          ( ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
}  
void somestuff():
{}
{ escapedQuoteString()
        | normalString()
        | <T_ASTERISK>
}
void escapedQuoteString():
{System.out.println("YEA");}
{
    <T_QUOTED>
}
void normalString():
{System.out.println("NO");}
{
        <T_PROPERTY>
}

------------------------------

Wasn't able to find anything usefull, on how to handle \\ and \" when expected as valid option in your input.

Any help much appreciated !!

Bertram

[J.Chris Findlay]

As I read the definition of T_QUOTED, it reads:
A literal space followed by 2 backslashes followed by 1 backslash and
one doublequote, followed by at least one of [a-zA-Z0-9:_-]
If that is not what you intended, then you need to re-define that.

On Wed, Mar 25, 2009 at 4:10 AM, Bertram <bertram@...> wrote:

>
> Hello again,
>
> I am new to Javacc, so there might be a very obvious solution to this.
>
> I'm trying to parse a) "ABC\\" and b) "\\ABC" by somestuff() below. [<= both
> as they are, NOT escaped, 2 backslashes]
> In case of:
> a) the normalString() is used by javacc -> clearly not intended
> b) there is an exception: Lexical error at line 1, column 1.  Encountered:
> "\\" (92), after : ""
>
> ------------------------------
>
> options{
>    IGNORE_CASE=false ;
>    JAVA_UNICODE_ESCAPE= true ;
> }
> PARSER_BEGIN(Test)
> package Mini;
> public class Test {}
> PARSER_END(Test)
> TOKEN :
> {
>  < T_ASTERISK:          "*">
> | < T_QUOTED:            ( (" ") ("\\\\") ("\\\"")
> ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
> | < T_PROPERTY:          ( ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
> }
> void somestuff():
> {}
> {       escapedQuoteString()
>        | normalString()
>        | <T_ASTERISK>
> }
> void escapedQuoteString():
> {System.out.println("YEA");}
> {
>    <T_QUOTED>
> }
> void normalString():
> {System.out.println("NO");}
> {
>        <T_PROPERTY>
> }
>
> ------------------------------
>
> Wasn't able to find anything usefull, on how to handle \\ and \" when
> expected as valid option in your input.
>
> Any help much appreciated !!
>
> Bertram
>
> --
> View this message in context: http://www.nabble.com/Doublequotes-and-Backslashes...-tp22682545p22682545.html
> Sent from the java.net - javacc users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@...
> For additional commands, e-mail: users-help@...
>
>

--
 - J.Chris Findlay
   (c:

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[Bertram]

that explained a lot ;-)

works now, thanks.

Solution for the next newbee:

TOKEN :
    < DQUOTE: "\"" >
|
    < ESCQUOTE: "\\" <DQUOTE> >
|
    < ESCSLASH: "\\\\" >
|
    < #SEARCH_CHAR: <ESCQUOTE> | <ESCSLASH> | <WCHAR> | ["\u0020"-"\u0021"] | ["\u0023"-"\u005B"] | ["\u005D"-"\uD7FF"] | ["\uE000"-"\uFFFD"] >
|
    < SEARCH_STR: <DQUOTE> (<SEARCH_CHAR>)* <DQUOTE> >


Bertram Grillitsch

J.Chris Findlay wrote:

As I read the definition of T_QUOTED, it reads:
A literal space followed by 2 backslashes followed by 1 backslash and
one doublequote, followed by at least one of [a-zA-Z0-9:_-]
If that is not what you intended, then you need to re-define that.

On Wed, Mar 25, 2009 at 4:10 AM, Bertram <[e-mail]> wrote:
>
> Hello again,
>
> I am new to Javacc, so there might be a very obvious solution to this.
>
> I'm trying to parse a) "ABC\\" and b) "\\ABC" by somestuff() below. [<= both
> as they are, NOT escaped, 2 backslashes]
> In case of:
> a) the normalString() is used by javacc -> clearly not intended
> b) there is an exception: Lexical error at line 1, column 1.  Encountered:
> "\\" (92), after : ""
>
> ------------------------------
>
> options{
>    IGNORE_CASE=false ;
>    JAVA_UNICODE_ESCAPE= true ;
> }
> PARSER_BEGIN(Test)
> package Mini;
> public class Test {}
> PARSER_END(Test)
> TOKEN :
> {
>  < T_ASTERISK:          "*">
> | < T_QUOTED:            ( (" ") ("\\\\") ("\\\"")
> ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
> | < T_PROPERTY:          ( ["a"-"z","A"-"Z","_","-","0"-"9",":"] )+ >
> }
> void somestuff():
> {}
> {       escapedQuoteString()
>        | normalString()
>        | <T_ASTERISK>
> }
> void escapedQuoteString():
> {System.out.println("YEA");}
> {
>    <T_QUOTED>
> }
> void normalString():
> {System.out.println("NO");}
> {
>        <T_PROPERTY>
> }
>
> ------------------------------
>
> Wasn't able to find anything usefull, on how to handle \\ and \" when
> expected as valid option in your input.
>
> Any help much appreciated !!
>
> Bertram
>
> --
> View this message in context: http://www.nabble.com/Doublequotes-and-Backslashes...-tp22682545p22682545.html
> Sent from the java.net - javacc users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [e-mail]
> For additional commands, e-mail: [e-mail]
>
>



--
 - J.Chris Findlay
   (c:

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