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