    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 SwitchStmt extends GenericBlockStmt
    023    {
    024      public /*@ non_null @*/ Expr expr;
    025
    026      //@ invariant loc != javafe.util.Location.NULL;
    027      public int loc;
    028
    029      public int getStartLoc() { return loc; }
    030
    031
    032    // Generated boilerplate constructors:
    033
    034      /**
    035       * Construct a raw SwitchStmt whose class invariant(s) have not
    036       * yet been established.  It is the caller's job to
    037       * initialize the returned node's fields so that any
    038       * class invariants hold.
    039       */
    040      //@ requires I_will_establish_invariants_afterwards;
    041      protected SwitchStmt() {}    //@ nowarn Invariant,NonNullInit;
    042
    043
    044    // Generated boilerplate methods:
    045
    046      public final int childCount() {
    047         int sz = 0;
    048         if (this.stmts != null) sz += this.stmts.size();
    049         return sz + 1;
    050      }
    051
    052      public final Object childAt(int index) {
    053              /*throws IndexOutOfBoundsException*/
    054         if (index < 0)
    055            throw new IndexOutOfBoundsException("AST child index " + index);
    056         int indexPre = index;
    057
    058         int sz;
    059
    060         sz = (this.stmts == null ? 0 : this.stmts.size());
    061         if (0 <= index && index < sz)
    062            return this.stmts.elementAt(index);
    063         else index -= sz;
    064
    065         if (index == 0) return this.expr;
    066         else index--;
    067
    068         throw new IndexOutOfBoundsException("AST child index " + indexPre);
    069      }   //@ nowarn Exception;
    070
    071      public final String toString() {
    072         return "[SwitchStmt"
    073            + " stmts = " + this.stmts
    074            + " locOpenBrace = " + this.locOpenBrace
    075            + " locCloseBrace = " + this.locCloseBrace
    076            + " expr = " + this.expr
    077            + " loc = " + this.loc
    078            + "]";
    079      }
    080
    081      public final int getTag() {
    082         return TagConstants.SWITCHSTMT;
    083      }
    084
    085      public final void accept(Visitor v) { v.visitSwitchStmt(this); }
    086
    087      public final Object accept(VisitorArgResult v, Object o) {return v.visitSwitchStmt(this, o); }
    088
    089      public void check() {
    090         super.check();
    091         for(int i = 0; i < this.stmts.size(); i++)
    092            this.stmts.elementAt(i).check();
    093         this.expr.check();
    094      }
    095
    096      //@ requires locOpenBrace != javafe.util.Location.NULL;
    097      //@ requires locCloseBrace != javafe.util.Location.NULL;
    098      //@ requires loc != javafe.util.Location.NULL;
    099      //@ ensures \result != null;
    100      public static SwitchStmt make(/*@ non_null @*/ StmtVec stmts, int locOpenBrace, int locCloseBrace, /*@ non_null @*/ Expr expr, int loc) {
    101         //@ set I_will_establish_invariants_afterwards = true;
    102         SwitchStmt result = new SwitchStmt();
    103         result.stmts = stmts;
    104         result.locOpenBrace = locOpenBrace;
    105         result.locCloseBrace = locCloseBrace;
    106         result.expr = expr;
    107         result.loc = loc;
    108         return result;
    109      }
    110    }