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 ExprCmd extends GuardedCmd 031 { 032 // Denotes assert or assume 033 public int cmd; 034 035 public /*@ non_null @*/ Expr pred; 036 037 public int loc; 038 039 040 public final int getTag() { return cmd; } 041 042 private void postCheck() { 043 boolean goodtag = 044 (cmd == TagConstants.ASSERTCMD || cmd == TagConstants.ASSUMECMD); 045 Assert.notFalse(goodtag); 046 } 047 048 public int getStartLoc() { return loc; } 049 050 051 // Generated boilerplate constructors: 052 053 /** 054 * Construct a raw ExprCmd whose class invariant(s) have not 055 * yet been established. It is the caller's job to 056 * initialize the returned node's fields so that any 057 * class invariants hold. 058 */ 059 //@ requires I_will_establish_invariants_afterwards; 060 protected ExprCmd() {} //@ nowarn Invariant,NonNullInit; 061 062 063 // Generated boilerplate methods: 064 065 public final int childCount() { 066 return 1; 067 } 068 069 public final Object childAt(int index) { 070 /*throws IndexOutOfBoundsException*/ 071 if (index < 0) 072 throw new IndexOutOfBoundsException("AST child index " + index); 073 int indexPre = index; 074 075 int sz; 076 077 if (index == 0) return this.pred; 078 else index--; 079 080 throw new IndexOutOfBoundsException("AST child index " + indexPre); 081 } //@ nowarn Exception; 082 083 public final String toString() { 084 return "[ExprCmd" 085 + " cmd = " + this.cmd 086 + " pred = " + this.pred 087 + " loc = " + this.loc 088 + "]"; 089 } 090 091 public final void accept(javafe.ast.Visitor v) { 092 if (v instanceof Visitor) ((Visitor)v).visitExprCmd(this); 093 } 094 095 public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 096 if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitExprCmd(this, o); else return null; 097 } 098 099 public void check() { 100 super.check(); 101 this.pred.check(); 102 postCheck(); 103 } 104 105 //@ ensures \result != null; 106 public static ExprCmd make(int cmd, /*@ non_null @*/ Expr pred, int loc) { 107 //@ set I_will_establish_invariants_afterwards = true; 108 ExprCmd result = new ExprCmd(); 109 result.cmd = cmd; 110 result.pred = pred; 111 result.loc = loc; 112 return result; 113 } 114 }