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    //// Pragmas
031    
032    public class ExprDeclPragma extends TypeDeclElemPragma
033    {
034      public int tag;
035    
036      public /*@ non_null @*/ Expr expr;
037    
038      public int modifiers;
039    
040      public int loc;
041    
042    
043      public final int getTag() { return tag; }
044      public int getModifiers() { return modifiers; }
045    
046      private void postCheck() {
047        boolean goodtag =
048          (tag == TagConstants.AXIOM || 
049           tag == TagConstants.INVARIANT );
050        Assert.notFalse(goodtag);
051      }
052    
053      public int getStartLoc() { return loc; }
054      public int getEndLoc() { return expr.getEndLoc(); }
055      public boolean isRedundant() { return redundant; }
056      public void setRedundant(boolean v) { redundant = v; }
057    
058    
059    // Generated boilerplate constructors:
060    
061      /**
062       * Construct a raw ExprDeclPragma whose class invariant(s) have not
063       * yet been established.  It is the caller's job to
064       * initialize the returned node's fields so that any
065       * class invariants hold.
066       */
067      //@ requires I_will_establish_invariants_afterwards;
068      protected ExprDeclPragma() {}    //@ nowarn Invariant,NonNullInit;
069    
070    
071    // Generated boilerplate methods:
072    
073      public final int childCount() {
074         return 1;
075      }
076    
077      public final Object childAt(int index) {
078              /*throws IndexOutOfBoundsException*/
079         if (index < 0)
080            throw new IndexOutOfBoundsException("AST child index " + index);
081         int indexPre = index;
082    
083         int sz;
084    
085         if (index == 0) return this.expr;
086         else index--;
087    
088         throw new IndexOutOfBoundsException("AST child index " + indexPre);
089      }   //@ nowarn Exception;
090    
091      public final String toString() {
092         return "[ExprDeclPragma"
093            + " tag = " + this.tag
094            + " expr = " + this.expr
095            + " modifiers = " + this.modifiers
096            + " loc = " + this.loc
097            + "]";
098      }
099    
100      public final void accept(javafe.ast.Visitor v) { 
101        if (v instanceof Visitor) ((Visitor)v).visitExprDeclPragma(this);
102      }
103    
104      public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 
105        if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitExprDeclPragma(this, o); else return null;
106      }
107    
108      public void check() {
109         this.expr.check();
110         postCheck();
111      }
112    
113      //@ ensures \result != null;
114      public static ExprDeclPragma make(int tag, /*@ non_null @*/ Expr expr, int modifiers, int loc) {
115         //@ set I_will_establish_invariants_afterwards = true;
116         ExprDeclPragma result = new ExprDeclPragma();
117         result.tag = tag;
118         result.expr = expr;
119         result.modifiers = modifiers;
120         result.loc = loc;
121         return result;
122      }
123    }