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    /** Represents a field declaration. */
023    
024    public class FieldDecl extends GenericVarDecl implements TypeDeclElem
025    {
026      //@ invariant hasParent ==> parent != null;
027      public TypeDecl parent;
028    
029      public VarInit init;
030    
031    
032      // The "locAssignOp" field is used only if "init" is non-null
033      public int locAssignOp;
034    
035    
036      private void postCheck() {
037        // Check invariants on modifiers...
038        // should be liberal...
039      }
040    
041      public TypeDecl getParent() { return parent; }
042      public void setParent(TypeDecl p) { parent = p; }
043      public ModifierPragmaVec getPModifiers() { return null; }
044    
045      public int getEndLoc() {
046        if (init == null)
047          return super.getEndLoc();
048    
049        return init.getEndLoc();
050      }
051    
052    
053    // Generated boilerplate constructors:
054    
055      /**
056       * Construct a raw FieldDecl 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 FieldDecl() {}    //@ nowarn Invariant,NonNullInit;
063    
064    
065    // Generated boilerplate methods:
066    
067      public final int childCount() {
068         int sz = 0;
069         if (this.pmodifiers != null) sz += this.pmodifiers.size();
070         return sz + 3;
071      }
072    
073      public final Object childAt(int index) {
074              /*throws IndexOutOfBoundsException*/
075         if (index < 0)
076            throw new IndexOutOfBoundsException("AST child index " + index);
077         int indexPre = index;
078    
079         int sz;
080    
081         sz = (this.pmodifiers == null ? 0 : this.pmodifiers.size());
082         if (0 <= index && index < sz)
083            return this.pmodifiers.elementAt(index);
084         else index -= sz;
085    
086         if (index == 0) return this.id;
087         else index--;
088    
089         if (index == 0) return this.type;
090         else index--;
091    
092         if (index == 0) return this.init;
093         else index--;
094    
095         throw new IndexOutOfBoundsException("AST child index " + indexPre);
096      }   //@ nowarn Exception;
097    
098      public final String toString() {
099         return "[FieldDecl"
100            + " modifiers = " + this.modifiers
101            + " pmodifiers = " + this.pmodifiers
102            + " id = " + this.id
103            + " type = " + this.type
104            + " locId = " + this.locId
105            + " init = " + this.init
106            + " locAssignOp = " + this.locAssignOp
107            + "]";
108      }
109    
110      public final int getTag() {
111         return TagConstants.FIELDDECL;
112      }
113    
114      public final void accept(Visitor v) { v.visitFieldDecl(this); }
115    
116      public final Object accept(VisitorArgResult v, Object o) {return v.visitFieldDecl(this, o); }
117    
118      public void check() {
119         super.check();
120         if (this.pmodifiers != null)
121            for(int i = 0; i < this.pmodifiers.size(); i++)
122               this.pmodifiers.elementAt(i).check();
123         if (this.id == null) throw new RuntimeException();
124         this.type.check();
125         if (this.init != null)
126            this.init.check();
127         postCheck();
128      }
129    
130      //@ requires type.syntax;
131      //@ requires locId != javafe.util.Location.NULL;
132      //@ ensures \result != null;
133      public static FieldDecl make(int modifiers, ModifierPragmaVec pmodifiers, /*@ non_null @*/ Identifier id, /*@ non_null @*/ Type type, int locId, VarInit init, int locAssignOp) {
134         //@ set I_will_establish_invariants_afterwards = true;
135         FieldDecl result = new FieldDecl();
136         result.modifiers = modifiers;
137         result.pmodifiers = pmodifiers;
138         result.id = id;
139         result.type = type;
140         result.locId = locId;
141         result.init = init;
142         result.locAssignOp = locAssignOp;
143         return result;
144      }
145    }