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The ANTLR 4 grammar compiler.
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/*
 * [The "BSD license"]
 *  Copyright (c) 2012-2016 Terence Parr
 *  Copyright (c) 2012-2016 Sam Harwell
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

atn(startState, states, edges, rankdir, decisionRanks, useBox) ::= <<
digraph ATN {
rankdir=LR;



}
>>

dfa(name, startState, states, edges, rankdir, decisionRanks, useBox) ::= <<
digraph   {
rankdir=;



}
>>

decision-rank(states) ::= <<
{rank=same; rankdir=TB; }; separator="; ">}
>>

edge(src,target,label,arrowhead,transitionIndex) ::= <<
:p ->  [fontsize=11, fontname="Courier", arrowsize=.7, label = "", arrowhead = ];
>>

action-edge(src,target,label,arrowhead,transitionIndex) ::= <<
:p ->  [fontsize=11, fontname="Courier", arrowsize=.7, label = "", arrowhead = ];
>>

epsilon-edge(src,label,target,arrowhead,transitionIndex,loopback=false) ::= <<
:p ->  [fontname="Times-Italic", label="ε", style="dashed"];
>>

state(state, label, name, transitions) ::= <%
[fontsize=11,
    label="
        
        
            {
            
            
            |
            
            {>}; separator="|">}}
        
            
        
        "
    
        , shape=record, fixedsize=false
    
        , shape=circle, fixedsize=true, width=.55
    
    , peripheries=1];
%>

stopstate(name,label,actionIndex,useBox) ::= <<
[fontsize=11, label=",\naction:", shape=polygon,sides=4,peripheries=2,fixedsize=falseshape=doublecircle, fixedsize=true, width=.6];
>>