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POANTLR 3 parsing problem
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copied!<p>I have written an <em>ANTLR 3</em> grammar for parsing <em>TaskJuggler III</em> bookings files (see below).</p> <p>On line</p> <blockquote> <p>project prj "Sample project" "1.0" 2010-10-24-00:00-+0200 - 2010-11-23-09:00-+0100 {</p> </blockquote> <p>I'm getting following errors:</p> <blockquote> <p>line 1:42 mismatched character '-' expecting set '0'..'9'</p> <p>line 1:48 mismatched character ':' expecting set '0'..'9'</p> <p>line 1:67 mismatched character '-' expecting set '0'..'9'</p> <p>line 1:73 mismatched character ':' expecting set '0'..'9'</p> </blockquote> <p>Thereafter, an <em>OutOfMemory</em> error occurs.</p> <p>Here is the relevant part of the grammar:</p> <blockquote> <p>bookingsFile returns [DefaultBookingsFile bookingsFile]</p> <pre><code>: { bookingsFile = new DefaultBookingsFile(); } projectHeader projectIds (resourceDeclaration)* (task)* ( suppStmt=supplementStatement </code></pre> <p>{bookingsFile.addSupplementStatement( $suppStmt.suppStmt ); }</p> <pre><code> )* ; </code></pre> <p>projectHeader</p> <pre><code>: 'project prj "' ANY_TEXT '" "1.0"' TJ3_BOOKING_TIME '-' </code></pre> <p>TJ3_BOOKING_TIME '{'</p> <pre><code> '}' ; </code></pre> <p>TJ3_BOOKING_TIME</p> <pre><code>: DIGIT DIGIT DIGIT DIGIT '-' DIGIT DIGIT '-' DIGIT DIGIT </code></pre> <p>'-' DIGIT DIGIT ':' DIGIT DIGIT '-' TIMEZONE</p> <pre><code>; </code></pre> <p>TIMEZONE</p> <pre><code>: ('+'|'-')DIGIT DIGIT DIGIT DIGIT ; </code></pre> </blockquote> <p>Question: What am I doing wrong?</p> <p>Thanks in advance</p> <p>Dmitri</p> <p>P. S.: Full version of the grammar is available at</p> <p><a href="http://bazaar.launchpad.net/~dp-sw-dev/pcc/prototype1/files/head%3A/src/main/java/at/silverstrike/pcc/impl/tj3bookingsparser/grammar/" rel="nofollow">http://bazaar.launchpad.net/~dp-sw-dev/pcc/prototype1/files/head%3A/src/main/java/at/silverstrike/pcc/impl/tj3bookingsparser/grammar/</a></p> <p>and below</p> <pre><code>grammar Bookings; options { backtrack=true; memoize=true; } @header { package at.silverstrike.pcc.impl.tj3bookingsparser.grammar; } @lexer::header { package at.silverstrike.pcc.impl.tj3bookingsparser.grammar; } bookingsFile returns [DefaultBookingsFile bookingsFile] : { bookingsFile = new DefaultBookingsFile(); } projectHeader projectIds (resourceDeclaration)* (task)* ( suppStmt=supplementStatement {bookingsFile.addSupplementStatement( $suppStmt.suppStmt ); } )* ; projectHeader : 'project prj "' ANY_TEXT '" "1.0"' TJ3_BOOKING_TIME '-' TJ3_BOOKING_TIME '{' '}' ; projectIds : 'projectids prj' ; resourceDeclaration : 'resource' TJ3_IDENTIFIER TJ3_STRING ; task : 'task' TJ3_IDENTIFIER TJ3_STRING '{' ANY_TEXT '}' ; supplementStatement returns [DefaultSupplementStatement suppStmt] : { suppStmt = new DefaultSupplementStatement(); } 'supplement task' taskId=TJ3_DOTTED_TASK_IDENTIFIER { suppStmt.setTaskId($taskId.text); } '{' ( bStmt=bookingStatement {suppStmt.addBookingStatement( $bStmt.stmt ); } )* ANY_TEXT '}' ; bookingStatement returns [DefaultBookingStatement stmt] : { stmt = new DefaultBookingStatement(); } TJ3_IDENTIFIER ':' 'booking' resource=TJ3_IDENTIFIER { stmt.setResource($resource.text); } ib1=indBooking { stmt.addIndBooking($ib1.indBooking); } ( ',' ib2=indBooking { stmt.addIndBooking($ib2.indBooking); } )* overTimeEtc ; indBooking returns [DefaultIndBooking indBooking] : startTime=TJ3_BOOKING_START_TIME '+' duration=TJ3_DURATION 'h' { $indBooking = new DefaultIndBooking($startTime.text, $duration.text); } ; overTimeEtc : '{' ANY_TEXT '}' ; TJ3_IDENTIFIER : ('a'..'Z'|'A'..'Z') ('a'..'Z'|'A'..'Z'|'0'..'9'|'_')* ; DIGIT : '0'..'9' ; TJ3_STRING : '"' ('a'..'z'|'A'..'Z'|'0'..'9'|' '|'_')* '"' ; ANY_TEXT : ('a'..'z'|'A'..'Z'|'0'..'9'|' '|'_')* ; TJ3_DOTTED_TASK_IDENTIFIER : TJ3_IDENTIFIER ('.' TJ3_IDENTIFIER)* ; TJ3_BOOKING_TIME : DIGIT DIGIT DIGIT DIGIT '-' DIGIT DIGIT '-' DIGIT DIGIT '-' DIGIT DIGIT ':' DIGIT DIGIT '-' TIMEZONE ; TJ3_BOOKING_START_TIME : DIGIT DIGIT DIGIT DIGIT '-' DIGIT DIGIT '-' DIGIT DIGIT ('-' DIGIT DIGIT ':' DIGIT DIGIT)? (TIMEZONE)?; TIMEZONE : ('+'|'-')DIGIT DIGIT DIGIT DIGIT ; TJ3_DURATION : FP_VALUE ('min' | 'h' | 'd' | 'w' | 'm' | 'y') ; FP_VALUE : DIGIT+ | DIGIT* '.' DIGIT* ; </code></pre>

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