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 SeqCmd extends GuardedCmd 031 { 032 // denotes g1 ; g2 ; ... ; gn 033 public /*@ non_null @*/ GuardedCmdVec cmds; 034 035 036 private void postCheck() { 037 Assert.notFalse(1 < cmds.size()); 038 } 039 040 public int getStartLoc() { return cmds.elementAt(0).getStartLoc(); } 041 public int getEndLoc() { return cmds.elementAt(cmds.size()-1).getEndLoc(); } 042 043 044 // Generated boilerplate constructors: 045 046 /** 047 * Construct a raw SeqCmd whose class invariant(s) have not 048 * yet been established. It is the caller's job to 049 * initialize the returned node's fields so that any 050 * class invariants hold. 051 */ 052 //@ requires I_will_establish_invariants_afterwards; 053 protected SeqCmd() {} //@ nowarn Invariant,NonNullInit; 054 055 056 // Generated boilerplate methods: 057 058 public final int childCount() { 059 int sz = 0; 060 if (this.cmds != null) sz += this.cmds.size(); 061 return sz + 0; 062 } 063 064 public final Object childAt(int index) { 065 /*throws IndexOutOfBoundsException*/ 066 if (index < 0) 067 throw new IndexOutOfBoundsException("AST child index " + index); 068 int indexPre = index; 069 070 int sz; 071 072 sz = (this.cmds == null ? 0 : this.cmds.size()); 073 if (0 <= index && index < sz) 074 return this.cmds.elementAt(index); 075 else index -= sz; 076 077 throw new IndexOutOfBoundsException("AST child index " + indexPre); 078 } //@ nowarn Exception; 079 080 public final String toString() { 081 return "[SeqCmd" 082 + " cmds = " + this.cmds 083 + "]"; 084 } 085 086 public final int getTag() { 087 return TagConstants.SEQCMD; 088 } 089 090 public final void accept(javafe.ast.Visitor v) { 091 if (v instanceof Visitor) ((Visitor)v).visitSeqCmd(this); 092 } 093 094 public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 095 if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitSeqCmd(this, o); else return null; 096 } 097 098 public void check() { 099 super.check(); 100 for(int i = 0; i < this.cmds.size(); i++) 101 this.cmds.elementAt(i).check(); 102 postCheck(); 103 } 104 105 //@ ensures \result != null; 106 public static SeqCmd make(/*@ non_null @*/ GuardedCmdVec cmds) { 107 //@ set I_will_establish_invariants_afterwards = true; 108 SeqCmd result = new SeqCmd(); 109 result.cmds = cmds; 110 return result; 111 } 112 }