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 javafe.ast;
013    
014    import javafe.util.Assert;
015    import javafe.util.Location;
016    import javafe.util.ErrorSet;
017    
018    // Convention: unless otherwise noted, integer fields named "loc" refer
019    // to the location of the first character of the syntactic unit
020    
021    
022    public class TryFinallyStmt extends Stmt
023    {
024      // @note locTry might will be shared with tryClause.locTry if
025      // tryClause is a TryCatchStmt
026      public /*@ non_null @*/ Stmt tryClause;
027    
028      public /*@ non_null @*/ Stmt finallyClause;
029    
030      //@ invariant loc != javafe.util.Location.NULL;
031      public int loc;
032    
033      //@ invariant locFinally != javafe.util.Location.NULL;
034      public int locFinally;
035    
036    
037      private void postCheck() {
038        int t = tryClause.getTag();
039        Assert.notFalse(t != TagConstants.SWITCHLABEL       //@ nowarn Pre;
040                        && t != TagConstants.CONSTRUCTORINVOCATION
041                        && t != TagConstants.VARDECLSTMT);
042        t = finallyClause.getTag();
043        Assert.notFalse(t != TagConstants.SWITCHLABEL       //@ nowarn Pre;
044                        && t != TagConstants.CONSTRUCTORINVOCATION
045                        && t != TagConstants.VARDECLSTMT);
046      }
047      public int getStartLoc() { return loc; }
048      public int getEndLoc() { return finallyClause.getEndLoc(); }
049    
050    
051    // Generated boilerplate constructors:
052    
053      /**
054       * Construct a raw TryFinallyStmt whose class invariant(s) have not
055       * yet been established.  It is the caller's job to
056       * initialize the returned node's fields so that any
057       * class invariants hold.
058       */
059      //@ requires I_will_establish_invariants_afterwards;
060      protected TryFinallyStmt() {}    //@ nowarn Invariant,NonNullInit;
061    
062    
063    // Generated boilerplate methods:
064    
065      public final int childCount() {
066         return 2;
067      }
068    
069      public final Object childAt(int index) {
070              /*throws IndexOutOfBoundsException*/
071         if (index < 0)
072            throw new IndexOutOfBoundsException("AST child index " + index);
073         int indexPre = index;
074    
075         int sz;
076    
077         if (index == 0) return this.tryClause;
078         else index--;
079    
080         if (index == 0) return this.finallyClause;
081         else index--;
082    
083         throw new IndexOutOfBoundsException("AST child index " + indexPre);
084      }   //@ nowarn Exception;
085    
086      public final String toString() {
087         return "[TryFinallyStmt"
088            + " tryClause = " + this.tryClause
089            + " finallyClause = " + this.finallyClause
090            + " loc = " + this.loc
091            + " locFinally = " + this.locFinally
092            + "]";
093      }
094    
095      public final int getTag() {
096         return TagConstants.TRYFINALLYSTMT;
097      }
098    
099      public final void accept(Visitor v) { v.visitTryFinallyStmt(this); }
100    
101      public final Object accept(VisitorArgResult v, Object o) {return v.visitTryFinallyStmt(this, o); }
102    
103      public void check() {
104         super.check();
105         this.tryClause.check();
106         this.finallyClause.check();
107         postCheck();
108      }
109    
110      //@ requires loc != javafe.util.Location.NULL;
111      //@ requires locFinally != javafe.util.Location.NULL;
112      //@ ensures \result != null;
113      public static TryFinallyStmt make(/*@ non_null @*/ Stmt tryClause, /*@ non_null @*/ Stmt finallyClause, int loc, int locFinally) {
114         //@ set I_will_establish_invariants_afterwards = true;
115         TryFinallyStmt result = new TryFinallyStmt();
116         result.tryClause = tryClause;
117         result.finallyClause = finallyClause;
118         result.loc = loc;
119         result.locFinally = locFinally;
120         return result;
121      }
122    }