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