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 GetsCmd extends AssignCmd 031 { 032 // denotes v := rhs 033 034 035 // Generated boilerplate constructors: 036 037 /** 038 * Construct a raw GetsCmd 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 GetsCmd() {} //@ nowarn Invariant,NonNullInit; 045 046 047 // Generated boilerplate methods: 048 049 public final int childCount() { 050 return 2; 051 } 052 053 public final Object childAt(int index) { 054 /*throws IndexOutOfBoundsException*/ 055 if (index < 0) 056 throw new IndexOutOfBoundsException("AST child index " + index); 057 int indexPre = index; 058 059 int sz; 060 061 if (index == 0) return this.v; 062 else index--; 063 064 if (index == 0) return this.rhs; 065 else index--; 066 067 throw new IndexOutOfBoundsException("AST child index " + indexPre); 068 } //@ nowarn Exception; 069 070 public final String toString() { 071 return "[GetsCmd" 072 + " v = " + this.v 073 + " rhs = " + this.rhs 074 + "]"; 075 } 076 077 public final int getTag() { 078 return TagConstants.GETSCMD; 079 } 080 081 public final void accept(javafe.ast.Visitor v) { 082 if (v instanceof Visitor) ((Visitor)v).visitGetsCmd(this); 083 } 084 085 public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 086 if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitGetsCmd(this, o); else return null; 087 } 088 089 public void check() { 090 super.check(); 091 this.v.check(); 092 this.rhs.check(); 093 } 094 095 //@ ensures \result != null; 096 public static GetsCmd make(/*@ non_null @*/ VariableAccess v, /*@ non_null @*/ Expr rhs) { 097 //@ set I_will_establish_invariants_afterwards = true; 098 GetsCmd result = new GetsCmd(); 099 result.v = v; 100 result.rhs = rhs; 101 return result; 102 } 103 }