001    /* Copyright 2000, 2001, Compaq Computer Corporation */
002    
003    /* IF THIS IS A JAVA FILE, DO NOT EDIT IT!  
004    
005       Most Java files in this directory which are part of the Javafe AST
006       are automatically generated using the astgen comment (see
007       ESCTools/Javafe/astgen) from the input file 'hierarchy.h'.  If you
008       wish to modify AST classes or introduce new ones, modify
009       'hierarchy.j.'
010     */
011    
012    package escjava.ast;
013    
014    import java.util.Hashtable;
015    import java.util.Set;
016    import java.util.ArrayList;
017    
018    import javafe.ast.*;
019    import javafe.util.Assert;
020    import javafe.util.Location;
021    import escjava.ParsedRoutineSpecs;
022    
023    // Convention: unless otherwise noted, integer fields named "loc" refer
024    // to the location of the first character of the syntactic unit
025    
026    //# TagBase javafe.tc.TagConstants.LAST_TAG + 1
027    //# VisitorRoot javafe.ast.Visitor
028    
029     
030    
031    public class CmdCmdCmd extends GuardedCmd
032    {
033      // denotes g1 ! g2  or  g1 [] g2
034      public int cmd;
035    
036      public /*@ non_null @*/ GuardedCmd g1;
037    
038      public /*@ non_null @*/ GuardedCmd g2;
039    
040    
041      public final int getTag() { return cmd; }
042    
043      private void postCheck() {
044        boolean goodtag =
045          (cmd == TagConstants.TRYCMD || cmd == TagConstants.CHOOSECMD);
046        Assert.notFalse(goodtag);
047      }
048    
049      public int getStartLoc() { return g1.getStartLoc(); }
050      public int getEndLoc() { return g2.getEndLoc(); }
051    
052    
053    // Generated boilerplate constructors:
054    
055      /**
056       * Construct a raw CmdCmdCmd whose class invariant(s) have not
057       * yet been established.  It is the caller's job to
058       * initialize the returned node's fields so that any
059       * class invariants hold.
060       */
061      //@ requires I_will_establish_invariants_afterwards;
062      protected CmdCmdCmd() {}    //@ nowarn Invariant,NonNullInit;
063    
064    
065    // Generated boilerplate methods:
066    
067      public final int childCount() {
068         return 2;
069      }
070    
071      public final Object childAt(int index) {
072              /*throws IndexOutOfBoundsException*/
073         if (index < 0)
074            throw new IndexOutOfBoundsException("AST child index " + index);
075         int indexPre = index;
076    
077         int sz;
078    
079         if (index == 0) return this.g1;
080         else index--;
081    
082         if (index == 0) return this.g2;
083         else index--;
084    
085         throw new IndexOutOfBoundsException("AST child index " + indexPre);
086      }   //@ nowarn Exception;
087    
088      public final String toString() {
089         return "[CmdCmdCmd"
090            + " cmd = " + this.cmd
091            + " g1 = " + this.g1
092            + " g2 = " + this.g2
093            + "]";
094      }
095    
096      public final void accept(javafe.ast.Visitor v) { 
097        if (v instanceof Visitor) ((Visitor)v).visitCmdCmdCmd(this);
098      }
099    
100      public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 
101        if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitCmdCmdCmd(this, o); else return null;
102      }
103    
104      public void check() {
105         super.check();
106         this.g1.check();
107         this.g2.check();
108         postCheck();
109      }
110    
111      //@ ensures \result != null;
112      public static CmdCmdCmd make(int cmd, /*@ non_null @*/ GuardedCmd g1, /*@ non_null @*/ GuardedCmd g2) {
113         //@ set I_will_establish_invariants_afterwards = true;
114         CmdCmdCmd result = new CmdCmdCmd();
115         result.cmd = cmd;
116         result.g1 = g1;
117         result.g2 = g2;
118         return result;
119      }
120    }